Which of the following fish have 14 pairs of gill slits?

KPK Mock 4
Biology
Gaseous Exchange
A) Dog fish
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B) Lamprey
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C) Cat fish
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D) Ray fish
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The presence of microorganisms in drinking water is determined by:

KPK Mock 4
Biology
A) COD
Show Explanation
B) TOC
Show Explanation
C) BOD
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D) TDS
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Mature ovum in human beings is surrounded by:

KPK Mock 4
Biology
Reproduction
A) Plasma membrane
Show Explanation
B) Vitelline membrane
Show Explanation
C) Corona radiata
Show Explanation
D) All of the above
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Nucleus was discovered by:

KPK Mock 4
Biology
Chromosomes and DNA
A) Waldyne
Show Explanation
B) T.H. Margan
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C) Robert Brown
Show Explanation
D) Kohler
Show Explanation

Cell death due to tissue damage is called:

KPK Mock 4
Biology
Growth and Development
A) Cancer
Show Explanation
B) Apoptosis
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C) Necrosis
Show Explanation
D) Metastasis
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Oligosaccharides class of carbohydrates contain monosaccharides of about:

KPK Mock 4
Biology
Biological Molecules
A) 2 to 8 units
Show Explanation
B) 2 to 9 units
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C) 2 to 10 units
Show Explanation
D) 2 to 11 units
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All of the following are triploblastic animals except:

KPK Mock 4
Biology
Growth and Development
A) Annelida
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B) Mollusca
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C) Coelenterata
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D) Echinodermata
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Cristea of mitochondria are the sites of:

KPK Mock 4
Biology
Cell Structure and Function
A) Electron transport chain
Show Explanation
B) Photophosphorylation
Show Explanation
C) Krebs cycle
Show Explanation
D) Glycolysis
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Photo-respiration can generate:

KPK Mock 4
Biology
Bioenergetics
A) 4-ATP
Show Explanation
B) 36-ATP
Show Explanation
C) 32-ATP
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D) NO-ATP
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The cross between two dissimillar individuals is called:

KPK Mock 4
Biology
Variation and Genetics
A) Test cross
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B) Interbreeding
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C) Eplstasls
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D) Hybridization
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Which one of the following characteristics is not shared by birds and mammals?

KPK Mock 4
Biology
Kingdom Animalia
Phylums – porifera to chordata
A) Viviparity
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B) Warm blooded nature
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C) Ossified endoskeleton
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D) Breathing using lungs
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The oxygen carrying capacity of haemoglobin in humans when the blood is 100% oxygenated is:

KPK Mock 4
Biology
Transport
A) 19.4 ml
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B) 19.6 ml
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C) 20 ml
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D) 21 ml
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If two heterozygous tall plants are crossed together, the proportion of phenotypically tall plants will be:

KPK Mock 4
Biology
Variation and Genetics
A) 50%
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B) 25%
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C) 75%
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D) 100%
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In mitochondria UGA Codon act to specify

KPK Mock 4
Biology
Chromosomes and DNA
A) Arginine
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B) Glutamine
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C) Tryptophan
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D) Valine
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An organism that adopts saprophytic mode of nutrition during part of its life is called:

KPK Mock 4
Biology
Nutrition
A) Facultative saprophyte
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B) Facultative parasite
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C) Obligate saprophyte
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D) Obligate parasite
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Excited electrons from photo system-II are captured by:

KPK Mock 4
Biology
Bioenergetics
A) PC
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B) PQ
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C) Cytochrome-b
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D) Pentamerous
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Deficiency of which element causes yellowing in plants?

KPK Mock 4
Biology
Nutrition
A) Magnesium
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B) Iron
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C) Chlorine
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D) Oxygen
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Chemiosmosis occurs in the:

KPK Mock 4
Biology
Bioenergetics
A) Grana
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B) Stroma
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C) Thylakoids
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D) InterGrana
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Amount of O2 carried by red blood cells is:

KPK Mock 4
Biology
Transport
A) 77%
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B) 90%
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C) 87%
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D) 97%
Show Explanatio

Messer‘s capsules are the receptors for

KPK Mock 4
Biology
Support and Movement
A) Temperature
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B) Pain
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C) Pressure
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D) Touch
Show Explanation

Body having a meshwork of cells, internal cavities lined with food filtering flagellated cells and indirect development are the characteristics of which Phylum?

KPK Mock 4
Biology
Kingdom Animalia
Phylums – porifera to chordata
A) Mollusca
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B) Protozoa
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C) Coelenterata
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D) Porifera
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Dark reaction gets completed by the regeneration of:

KPK Mock 4
Biology
Bioenergetics
A) PGA
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B) PGAL
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C) RUBP
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D) RUBISCO
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A cell-wall that is composed of sugar and amino acids is called:

KPK Mock 4
Biology
Cell Structure and Function
A) Murein
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B) Chitin
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C) Lignin
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D) Pectin
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Who used puzzle boxes in experiment on animal learning?

KPK Mock 4
Biology
Coordination and Control
A) Pavlove
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B) E.L. Thorndike
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C) Konrad Lorenz
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D) Kohle
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How many pairs of cranial nerves are mixed in nature?

KPK Mock 4
Biology
Coordination and Control
A) 02 pairs
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B) 04 pairs
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C) 06 pairs
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D) 08 pairs
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—– is formed by two pairs of light chains, and one pair of heavy chains.

KPK Mock 4
Biology
Support and Movement
Ultrastructure & Mechanism of Skeletal Muscle Contraction
A) actin
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B) myosine
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C) myofibril
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D) Fibroin
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The hormone released by the posterior pitultary that stimulates the contraction of uterine and mammary gland muscles is called:

KPK Mock 4
Biology
Coordination and Control
Endocrine System and its Hormones
A) Prolactin
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B) IH
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C) FSH
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D) Oxytocin
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Polio immunization vaccine is effective:

KPK Mock 4
Biology
A) 50%
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B) 60%
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C) 80%
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D) 90%
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Hermaphrodite phylum is:

KPK Mock 4
Biology
Variety of Life
A) Annelida
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B) Arthropoda
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C) Echinodermata
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D) Mollusca
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In which of the following, does the pharynx opens directly into the intestine?

KPK Mock 4
Biology
Gaseous Exchange
A) Planaria
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B) Earthworm
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C) Cockroach
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D) Snail
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Blood pressure towards the brain during rest hours is:

KPK Mock 4
Biology
Transport
A) 850mm/minute
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B) 900mm/minute
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C) 750mm/minute
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D) 730mm/minute
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Rhizobium belong to sub group of bacteria called:

KPK Mock 4
Biology
Kingdom Prokaryote
A) Alpha-Protobacteria
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B) Beta-Protobacteria
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C) Gamma-Protobacteria
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D) Delta-Protobacterla
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Which one of the following animals is filter feeder?

KPK Mock 4
Biology
Nutrition
A) Teeth
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B) Sycon
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C) Fresh water muscle
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D) Jelly fish
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Which one of the following animals is viviparous?

KPK Mock 4
Biology
Reproduction
Reproduction in Animals
A) Rat
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B) Kangaroo
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C) Duckbilled platypus
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D) Spiny ant eater
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Both DNA and RNA are synthesize by the process of:

KPK Mock 4
Biology
Chromosomes and DNA
A) Transcription
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B) Replication
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C) Polymerization
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D) PCR
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Bile is released from the gall bladder by the action of:

KPK Mock 4
Biology
Nutrition
A) Gastrin
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B) Cholecystokinin
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C) Secretin
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D) Renin
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Erepsin acts upon:

KPK Mock 4
Biology
A) Polypeptides
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B) Carbohydrates
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C) Dipeptides
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D) Fats
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Human body thermostat is:

KPK Mock 4
Biology
Homeostasis
A) Medulla
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B) Medulla oblongata
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C) Body fluid
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D) Hypothalamus
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Umbilical cord contains which of the following?

KPK Mock 4
Biology
Reproduction
Reproduction in Females
A) Pluripotent stem cells
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B) Blood stem cells
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C) Cord blood stem cells
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D) both a and b
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Which viruses can convert normal cells into cancer cells?

KPK Mock 4
Biology
Variety of Life
A) retrovirus
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B) adenovirus
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C) Poliovirus
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D) All
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When the entire body of a bacterium is covered by flagella, such a bacterium is called:

KPK Mock 4
Biology
Variety of Life
A) Atrichous
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B) Lopho-trichous
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C) Lampi trichous
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D) Petri-trichous
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“80–S” ribosome is formed by the combination of:

KPK Mock 4
Biology
Biological Molecules
A) 30S and 40S
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B) 70S and 10S
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C) 50S and 30S
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D) 60S and 40S
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Choose the correct statement.

KPK Mock 4
Biology
Kingdom Animalia
Phylums – porifera to chordata
A) All mammals are viviparous.
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B) All cyclostomes do not possess jaws and paired fins.
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C) All reptiles have a three chambered heart.
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D) All pisces have gills covered by an operculum
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6-NADH can yield:

KPK Mock 4
Biology
Bioenergetics
A) 12-ATP
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B) 38-ATP
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C) 18-ATP
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D) 36-ATP
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Replication progresses at a rate of about 50 base pairs per second in:

KPK Mock 4
Biology
Chromosomes and DNA
A) Bacteria
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B) Virus
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C) Eukaryote
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D) All of the above
Show Explanation

Myoglobin is found in:

KPK Mock 4
Biology
Transport
A) Bone
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B) Connective tissue
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C) Muscles
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D) Cartilage
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Polysaccharide cellulose is the building material of:

KPK Mock 4
Biology
Biological Molecules
A) Primary cell-wall
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B) Secondary cell-wall
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C) Middle lamella
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D) Plasma membrane
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In which of the following is the phenotypic and genotypic ratio the same?

KPK Mock 4
Biology
Variation and Genetics
A) Co-dominance
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B) Over dominance
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C) Epitasis
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D) Incomplete dominance
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Biorhythms are called circadian which means about one day so they are also called?

KPK Mock 4
Biology
Coordination and Control
Coordination in Plants
A) diurnal tempo
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B) diurnal time
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C) diurnal rhythms
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D) all of these
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Deficiency of which of the following causes diuresis?

KPK Mock 4
Biology
Coordination and Control
A) LH
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B) ACTH
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C) FSH
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D) ADH
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Cell-wall of gram positive bacteria is composed of:

KPK Mock 4
Biology
Kingdom Prokaryote
Size and Structure of Bacteria
A) Glycolipids
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B) Glycoproteins
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C) Lipoproteins
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D) Peptidoglycan
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Balantidium coli lives in the intestinal tract of:

KPK Mock 4
Biology
A) Pigs and rats
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B) Pigs and monkeys
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C) Rats and dogs
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D) Cats and sheep
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Lobsters belong to class:

KPK Mock 4
Biology
Bio-diversity | Variety of Life
A) Myriapoda
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B) Arychnida
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C) Hexapoda
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D) Crustacean
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What is the approximate diameter of retroviruses?

KPK Mock 4
Biology
Variety of Life
A) 150 nm
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B) 100nm
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C) 200 nm
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D) 250 nm
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To decrease the salt potential, the guard cells absorb:

KPK Mock 4
Biology
Cell Structure and Function
A) Sodium Ions
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B) Magnesium ions
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C) Potassium ions
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D) Calcium ions
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Carotenoids pigments are:

KPK Mock 4
Biology
A) Yellow, Red, Green, Blue
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B) Orange, Yellow, Red, Brown
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C) Green, Yellow, Blue, Brown
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D) Blue, Red, Green, Yellow
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Dicotyledonous flowers are usually:

KPK Mock 4
Biology
Kingdom Plantae
A) Clmerous
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B) Trimerous
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C) Tetramerous
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D) Pentamerous
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Sucrose on hydrolysis yield:

KPK Mock 4
Biology
Biological Molecules
A) Glucose
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B) Glucose and fructose
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C) Glucose and maltose
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D) Maltose and fructose
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All of the following are co-enzymes except:

KPK Mock 4
Biology
A) NAD
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B) FAD
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C) NADP
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D) ADP
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The optimum pH of enzyme maltase is:

KPK Mock 4
Biology
A) 4.5
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B) 5.5
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C) 6.1 – 6.8
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D) 6.7 – 7
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In stomach the pepsinogen is synthesized and secreted by:

KPK Mock 4
Biology
Nutrition
A) Mucus cells
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B) Parietal cells
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C) Hormonal cells
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D) Chief cells
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The pigments of chlorophyll a,b, and carotenoids are present in:

KPK Mock 4
Biology
Bioenergetics
A) Stroma
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B) Grana
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C) Thylakoid membrane
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D) Crista
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What is the most common fuel of energy for cells?

KPK Mock 4
Biology
Biological Molecules
Carbohydrates
A) Protein
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B) lipid
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C) carbohydrate
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D) none of these
Show Explanation

A jawless fish lays eggs in fresh water and its ammocoetes larvae after metamorphosis. This fish return to the ocean as ____________

KPK Mock 4
Biology
Kingdom Animalia
Phylums – porifera to chordata
A) Neomyxine
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B) Petromyzon
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C) Eptatretus
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D) Myxine
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Brunner‘s glands are found in:

KPK Mock 4
Biology
Nutrition
A) Stomach
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B) Duodenum
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C) Ileum
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D) Colon
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The bacteriophage incorporates in the host genome in which phase?

KPK Mock 4
Biology
Variety of Life
A) lysogenic cycle
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B) lytic cycle
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C) both
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D) none
Show Explanation

The product of light reaction travel from:

KPK Mock 4
Biology
Bioenergetics
Light Dependent Mechanism of Photosynthesis
A) Cristae to stroma
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B) Stroma to grana
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C) Grana to cristae
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D) Grana to stroma
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A hormone that helps in growing seedless grapes:

KPK Mock 4
Biology
Coordination and Control
A) Auxins
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B) Cytokinins
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C) Ethylene
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D) Gibberellins
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Statements and Actions:

Statement The availability of imported fruits has increased in the indigenous market and so the demand for indigenous fruits has been decreased.

I. To help the indigenous producers of fruits, the Government should impose high import duty on these fruits, even if these are not of good quality.

II. The fruit vendors should stop selling imported fruits. So that the demand for indigenous fruits would be increased.

Chemistry
Physics
Physics
PMC Practice 26
Logical Reasoning
Course of Action
A) Both of them follows
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B) None of them follows
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C) Only I follows
Show Explanation
D) Only II follows
Show Explanation

The radiations all around us are called __ radiations

Chemistry
KPK Mock 4
Physics
Nuclear Physics
Biological Effects and Uses of Radiation
A) natural
Show Explanation
B) artificial
Show Explanation
C) both a or b
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D) no radiation is around us
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The potential difference between a pair of similar and parallel conducting plates is known. What additional information is needed in order to find the electric field strength between the plates?

Chemistry
Physics
Physics
KPK Mock 4
Physics
A) Separation of the plates.
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B) Separation and area of the plates.
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C) Permittivity of the medium; separation of the plates.
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D) Permittivity of the medium; separation and area of the plates.
Show Explanation

The resistance of a conductor at absolute zero ( 0 K) is

Chemistry
KPK Mock 4
Physics
Current Electricity
Electrical Power and Power Dissipation in Resistors
A) Almost zero
Show Explanation
B) Almost infinite
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C) No prediction at all
Show Explanation
D) May increase or decrease
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The change in enthalpy at constant pressure, △H is equal to:

Chemistry
Physics
Physics
KPK Mock 4
Physics
A) △H = q + P△V
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B) △H = △E- P△V
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C) △H = △E + P△V
Show Explanation
D) △H = q – P△V
Show Explanation

Newton first law of motion is also known as:

Chemistry
Physics
Physics
Physics
Physics
Work, Power & Energy
Newton’s Laws of Motion
KPK Mock 4
Physics
Forces and Motion
A) Law of inertia
Show Explanation
B) Law of electromagnetism
Show Explanation
C) Law of universal gravity
Show Explanation
D) Law of conservation of momentum
Show Explanation

The deuterium atom has __ quarks

Chemistry
Physics
Physics
KPK Mock 4
Physics
Nuclear Physics
Composition of Atomic Nuclei
A) 3
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B) 6
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C) 9
Show Explanation
D) 12
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The phase angle between two points in a medium is 4pi/5. What is the separation between these two points if the wavelength of the wave is 5m.

Chemistry
Physics
Physics
Physics
Physics
Work, Power & Energy
Reflection of Waves and Phase Change
KPK Mock 4
Physics
Wave Motion and Sound
A) 5/4 m
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B) 4pi m
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C) 2 m
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D) 10 m
Show Explanation

For ideal step up transformer Ps_Pp.

Chemistry
KPK Mock 4
Physics
Magnetism and Electromagnetic Induction
Transformers
A) equal to
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B) greater than
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C) less than
Show Explanation
D) none of these
Show Explanation

Moon is revolving around the earth, work done by the earth on the moon is

Chemistry
Physics
Physics
Physics
Physics
Work, Power & Energy
KPK Mock 4
Physics
Work, Power & Energy
A) positive
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B) zero
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C) negative
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D) none of these
Show Explanation

An organ pipe of length T has one end closed but the other end open. What is the wavelength of the fundamental node emitted?

Chemistry
Physics
Physics
KPK Mock 4
Physics
A) Slightly smaller than 41.
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B) Slightly larger than 41
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C) Roughly equal to 3:/2.
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D) Slightly larger than 21.
Show Explanation

Can we see magnetic flux lines?

Chemistry
KPK Mock 4
Physics
Magnetism and Electromagnetic Induction
Magnetic Flux and Flux Density
A) Yes
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B) No
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C) Depends on strength of field
Show Explanation
D) Only when the field is large
Show Explanation

Verbal Reasoning:

Statements:

(I) He have got cavity in his tooth

(II) He eats too much chocolates

Chemistry
PMC Practice 26
Logical Reasoning
Cause and Effect
A) statement 1 is the cause and 2 is its effect
Show Explanation
B) statement 2 is the cause and 1 is its effect
Show Explanation
C) both statements are independent causes
Show Explanation
D) both statements are of common cause
Show Explanation

A block moves in uniform circular motion because a cord tied to the block is anchored at the centre of a circle. Then the power of the force exerted on the block by the cord is:

Chemistry
Physics
Physics
Physics
Physics
Work, Power & Energy
KPK Mock 4
Physics
Circular Motion & Momentum
A) Positive
Show Explanation
B) Negative
Show Explanation
C) Zero
Show Explanation
D) Infinite
Show Explanation

What are the units of the ratio: specific latent heat of vaporization of water/ specific heat capacity of water

Chemistry
Physics
Physics
KPK Mock 4
Physics
Heat and Thermodynamics
First Law of Thermodynamics
A) K
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B) 1/K
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C) K^2
Show Explanation
D) no unit
Show Explanation

12,32,72,152 _____

Chemistry
Physics
Physics
Physics
Physics
Work, Power & Energy
KPK Mock 4
Logical Reasoning
Letters and Symbols Series
A) 312
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B) 325
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C) 515
Show Explanation
D) 613
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The internal energy of a fixed case of an ideal gas depends on:

Chemistry
Physics
Physics
KPK Mock 4
Physics
A) Pressure, but not volume or temperature.
Show Explanation
B) Temperature, but not pressure or volume
Show Explanation
C) Volume, but not pressure or temperature.
Show Explanation
D) Pressure and temperature, but not volume.
Show Explanation

Which radiation passes through black body:

Chemistry
Physics
Physics
Physics
Physics
Work, Power & Energy
KPK Mock 4
Physics
Dawn of Modern Physics
A) Alpha
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B) Gamma
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C) Beta
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D) All
Show Explanation

Michelson interferometer can be used to measure:

Chemistry
Physics
Physics
KPK Mock 4
Physics
Wave Motion and Sound
A) speed of sound
Show Explanation
B) wavelength of sound
Show Explanation
C) speed of light
Show Explanation
D) wavelength of light
Show Explanation

In a vibrating cord the point where the particles are stationary is called:

Chemistry
Physics
KPK Mock 4
Physics
Wave Motion and Sound
A) Node
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B) Anti-node
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C) Crest
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D) Trough
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If system changes from a state Pl Vl to P2V2 by two paths then quantity which remains unchanged is

Chemistry
KPK Mock 4
Physics
Heat and Thermodynamics
Internal Energy
A) dQ
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B) dW
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C) dQ-dW
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D) dQ+dW
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The energy stored in a charged capacltor is given by:

Chemistry
Physics
Physics
KPK Mock 4
Physics
A) 1/2 CV2
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B) 1/2 QV
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C) 1/2 m v2
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D) Both A and B
Show Explanation

Which thermodynamic temperature is equivalent to 501.850C?

Chemistry
Physics
Physics
KPK Mock 4
Physics
A) 775.00 K
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B) 774.85 K
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C) 228.85 K
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D) 228.70 K
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Three equivalent resistors connected in parallel have equivalent resistance R/3. When they are connected in series then the equivalent resistance is:

Chemistry
Physics
KPK Mock 4
Physics
Current Electricity
A) 3R
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B) R/3
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C) R
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D) 2R
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Photons of energy 10.25 eV fall on the surface of the metal emitting photoelectrons of maximum kinetic energy 5.0 eV. What is the stopping voltage required for these electrons?

Chemistry
Physics
Physics
Physics
Physics
Work, Power & Energy
KPK Mock 4
Physics
Dawn of Modern Physics
A) 10V
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B) 8V
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C) 5V
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D) 4V
Show Explanation

The phase angle between two points in a medium is 4pi/5. What is the separation between these two points if the wavelength of the wave is 5m.

Chemistry
Physics
Physics
KPK Mock 4
Physics
Wave Motion and Sound
A) 5/4 m
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B) 4pi m
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C) 2 m
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D) 10 m
Show Explanation

You stand on a spring scale on the floor of an elevator. Of the following, the scale shows the highest reading when the elevator:

Chemistry
Physics
Physics
KPK Mock 4
Physics
A) Moves upward with increasing speed
Show Explanation
B) Moves upward with decreasing speed
Show Explanation
C) Remains stationary
Show Explanation
D) Moves downward with increasing speed
Show Explanation

When lead, 81Pb214, emits a ß- particle, the resultant nucleus will be:

Chemistry
Physics
KPK Mock 4
Physics
Analytical Chemistry
A) 83Bi214
Show Explanation
B) 84Po214
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C) 82Pb214
Show Explanation
D) 41TI214
Show Explanation

The phase angle between two points in a medium is 4pi/5. What is the separation between these two points if the wavelength of the wave is 5m.

Chemistry
Physics
Physics
Physics
Physics
Work, Power & Energy
KPK Mock 4
Physics
Wave Motion and Sound
A) 5/4 m
Show Explanation
B) 4pi m
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C) 2 m
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D) 10 m
Show Explanation

Ohm‘s law is valid only for

Chemistry
Physics
Physics
KPK Mock 4
Physics
Current Electricity
A) Thermistor
Show Explanation
B) Bulb filament
Show Explanation
C) Metals
Show Explanation
D) Semiconductors
Show Explanation

The deuterium atom has __ quarks

Chemistry
Physics
Physics
Physics
Physics
Work, Power & Energy
KPK Mock 4
Physics
Nuclear Physics
Composition of Atomic Nuclei
A) 3
Show Explanation
B) 6
Show Explanation
C) 9
Show Explanation
D) 12
Show Explanation

A wire of resistance 4Ω is bent in the form of a circle. The resistance between the ends of any diameter is:

Chemistry
Physics
Physics
Physics
Physics
Work, Power & Energy
KPK Mock 4
Physics
A) 1 Ω
Show Explanation
B) 2 Ω
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C) 4 Ω
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D) 8 Ω
Show Explanation

Spectral lines is like a _____ of absorbed or emission energy in a spectrum

Chemistry
KPK Mock 4
Physics
Atomic Spectra
Spectrum of Hydrogen Atom
A) charged pattern
Show Explanation
B) fingerprint pattern
Show Explanation
C) discharged pattern
Show Explanation
D) None of these
Show Explanation

The rate of change of momentum of a body falling freely under gravity is equal to its:

Chemistry
Physics
Physics
KPK Mock 4
Physics
Circular Motion & Momentum
A) Impulse
Show Explanation
B) Kinetic energy
Show Explanation
C) Power
Show Explanation
D) weight
Show Explanation

A capacitor which has a capacitance of 1 farad will:

Chemistry
Physics
Physics
KPK Mock 4
Physics
A) Be fully charged in 1 second by a current of 1 ampere

Show Explanation
B) Store 1 coulomb of charge at a potential difference of 1 volt.
Show Explanation
C) Gain 1 joule of energy when 1 coulomb of charge is stored on it.
Show Explanation
D) Discharge in 1 second when connected aoross a resistor of resistance 1 ohm
Show Explanation

Which of the given formulae would be used to calculate the wavelength of an electron? Given its velocity(v), its mass (m) and constant h:

Chemistry
Physics
Physics
KPK Mock 4
Physics
A) v = f.λ
Show Explanation
B) λ = h / mv
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C) s = d/t
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D) p = λ x h
Show Explanation

Which among the following phenomenon shows particle nature of light?

Chemistry
KPK Mock 4
Physics
Dawn of Modern Physics
A) Photoelectric effect
Show Explanation
B) Interference
Show Explanation
C) Polarization
Show Explanation
D) Matter waves
Show Explanation

When electron absorbs a photon and jumps to higher states it is called:

Chemistry
Physics
Physics
Physics
Physics
Work, Power & Energy
KPK Mock 4
Physics
Dawn of Modern Physics
A) De-excitation
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B) Excitation
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C) Emission
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D) Conversion
Show Explanation

A wheel starts from rest and has an angular acceleration of 4.0 rad/s2. When it has made 10 rev its angular velocity is:

Chemistry
Physics
KPK Mock 4
Physics
Circular Motion & Momentum
A) 16 rad/s
Show Explanation
B) 22 rad/s
Show Explanation
C) 32 rad/s
Show Explanation
D) 250 rad/s
Show Explanation

An electron has charge-e- and mass m. A proton has charge e and mass 1840m. A “Proton volt” is equal to:

Chemistry
KPK Mock 4
Physics
A) 1 eV
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B) 1840 eV
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C) (1/1840) eV
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D) √1840 eV
Show Explanation

Which of the following furnaces is used for the production of wrought iron?

Chemistry
Physics
Physics
Physics
KPK Mock 4
Physics
Physics of Solids
A) Open hearth furnace
Show Explanation
B) Reverberatory furnace
Show Explanation
C) Bessemer converter
Show Explanation
D) Blast furnace
Show Explanation

Statements and Actions:

Statement The Management of School M has decided to give free breakfast from next academic year to all the students in its primary section through its canteen even though they will not get any government grant.

Courses of Action

(I) The school will have to admit many poor students who will seek admission for the next academic year.

(II) The canteen facilities and utensils have to be checked and new purchases to be made to equip it properly.

(Ill) Funds will have to be raised to support the scheme for years to come.

Chemistry
Physics
Physics
PMC Practice 26
Logical Reasoning
Course of Action
A) Only II and Ill follows
Show Explanation
B) Only Ill and I follow
Show Explanation
C) Only I and II follow
Show Explanation
D) Only I follows
Show Explanation

The differences in energy between different states of bond vibrations in a molecule correspond to which electromagnetic region?

Chemistry
Physics
Physics
Physics
Physics
Work, Power & Energy
KPK Mock 4
Physics
A) Microwave
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B) Infrared
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C) Visible
Show Explanation
D) X-rays
Show Explanation

Blackbody shows a ______ spectra:

Chemistry
Physics
Physics
Physics
Physics
Work, Power & Energy
KPK Mock 4
Physics
Dawn of Modern Physics
A) Continuous
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B) Discrete
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C) Band
Show Explanation
D) Line
Show Explanation

A mass accelerates uniformly when the resultant force acting on it:

Chemistry
Physics
Physics
Physics
KPK Mock 4
Physics
A) Is zero.
Show Explanation
B) Is constant but not zero.
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C) Increases uniformly with respect to time
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D) Is proportional to the displacement of the mass from a fixed point.
Show Explanation

Drops X and Y, of the same oil, remained stationary in air in the same electric field. After the field was switched off, X fell more quickly than Y. which deduction can be made?

Chemistry
Physics
Physics
KPK Mock 4
Physics
Electrostatics
A) X had a greater charge than Y
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B) Y ha a greater chrge than X
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C) Parallel but opposite
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D) Parallel, opposite and folded spirally.
Show Explanation

During adiabatic expansion internal energy decreases by 2J, then work done in this process is

Chemistry
Physics
Physics
KPK Mock 4
Physics
Heat and Thermodynamics
First Law of Thermodynamics
A) 2J
Show Explanation
B) 1J
Show Explanation
C) -1J
Show Explanation
D) -2J
Show Explanation

A particle, held by a string whose other end is attached to a fixed point C, moves in a circle on a horizontal frictionless surface. If the string is cut, the angular momentum of the particle about the point: C.

Chemistry
Physics
Physics
Physics
KPK Mock 4
Physics
A) Increases
Show Explanation
B) Decreases
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C) Does not change
Show Explanation
D) Changes direction but not magnitude
Show Explanation

Which of the following is closest to a yard:

Chemistry
KPK Mock 4
Physics
A) 0.01 m
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B) 0.1 m
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C) 1 m
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D) 100 m
Show Explanation

The electromagnetic radiation which moves with high frequency will have _______ wavelength:

Chemistry
Physics
Physics
Physics
Physics
Work, Power & Energy
Production of electromagnetic waves
KPK Mock 4
Physics
Electromagnetic Waves
A) Short
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B) Long
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C) Unchanged
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D) Variable
Show Explanation

In case of half wave rectification the resistance of diode during negative half of A.C is:

Chemistry
Physics
Physics
Physics
Physics
Work, Power & Energy
KPK Mock 4
Physics
Alternating Current
A.C. Circuits
A) Very high
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B) Very low
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C) A few ohms
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D) Negative
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The rotational inertia of a disk about its axis is 0.70 Kg. m2. When a 2.0-kg weight is added to itsrim, 0.40m from the axis, the rotational inertia becomes:

Chemistry
KPK Mock 4
Physics
Circular Motion & Momentum
A) 0.38 Kg – m2

Show Explanation
B) 0.54 kg – m2
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C) 0.86 kg – m2

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D) 1.0 kg – m2

Show Explanation

1 kilowatt =____________ Watts.

Chemistry
Physics
Physics
Physics
Physics
Work, Power & Energy
KPK Mock 4
Physics
Work, Power & Energy
A) 2000 watts
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B) 1000 watts
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C) 300 watts
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D) 100 Watts
Show Explanation

Complete the sequence:

2, 15, 41, 80, _____

Chemistry
Physics
Physics
Physics
Physics
Work, Power & Energy
KPK Mock 4
Logical Reasoning
Letters and Symbols Series
A) 111
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B) 120
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C) 121
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D) 132
Show Explanation

Radioactive activity is affected by:

Chemistry
Physics
Physics
KPK Mock 4
Physics
A) Temperature
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B) Pressure
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C) Humidity level
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D) None of the above
Show Explanation

What letter comes next in the following series? B D G K P

Chemistry
Physics
Physics
Physics
Physics
Work, Power & Energy
KPK Mock 4
Logical Reasoning
Logical Deduction
A) C
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B) E
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C) B
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D) V
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The Emporium Mall has more stores than the Pakages Mall.
The Amanah Mall has fewer stores than the Pakages Mall.
The Emporium Mall has more stores than the Amanah Mall.
If the first two statements are true, the third statement is

Chemistry
Physics
Physics
Physics
Physics
Work, Power & Energy
KPK Mock 4
Logical Reasoning
Critical Thinking
A) True
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B) FALSE
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C) Uncertain
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D) None of these
Show Explanation

8, 10, 14, 18, ___ , 34, 50 , 66:

Chemistry
Physics
Physics
Physics
Physics
Work, Power & Energy
KPK Mock 4
Logical Reasoning
Letters and Symbols Series
A) 24
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B) 25
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C) 26
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D) 27
Show Explanation

Blueberries cost more than strawberries.
Blueberries cost less than raspberries.
Raspberries cost mre than strawberries and blueberries.
If the first two statements are true, the third statement is:

Chemistry
Physics
Physics
Physics
Physics
Work, Power & Energy
KPK Mock 4
Logical Reasoning
Critical Thinking
A) True
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B) FALSE
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C) Uncertain
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D) None of these
Show Explanation

Which is an incorrect statement?

KPK Mock 4
Chemistry
Chemical Bonding
A) The ionic bonds are non-directional in character
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B) The crystals of covalent compounds are made up of molecules
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C) The covalent bonds are rigid and non-directional
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D) Ionic compounds have high melting point and boiling point
Show Explanation

Select molecule that has unpaired electrons in anti-bonding molecular orbitals:

KPK Mock 4
Chemistry
Chemical Bonding
A) N2
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B) Cl2
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C) H2
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D) O2
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Choose the one which is not the assumption of collision theory of reaction rate:

KPK Mock 4
Chemistry
States of Matter – Gases, Liquids and Solids
A) For chemical reaction to occur molecule/ particles must colloids
Show Explanation
B) For reacting molecules/ Particles must possess a certain minimum amount of energy, the activation of energy
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C) Every collision is not productive
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D) For hydrogen molecule formation from atoms require specific orientation
Show Explanation

Shown below are portion of orbital diagrams representing the ground state electronic configuration of certain elements. Which of them obeys the Pauli‘s exclusion principle and Hund‘s rules?

KPK Mock 4
Chemistry
Chemical Bonding
A) Option A
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B) Option B
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C) Option C
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D) Both option B and C are correct
Show Explanation

Which type of isomerism is being exhibited by FCH = CHF?

Chemistry
KPK Mock 4
Chemistry
Fundamental Principles of Organic Chemistry
A) Chain isomerism
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B) Structural isomerism
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C) Geometrical isomerism
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D) Position isomerism
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Select meta directing group of the following?

KPK Mock 4
Chemistry
Fundamental Principles of Organic Chemistry
A) –OH
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B) – NR2
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C) –CN
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D) –OR
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Which one of the following will not undergo dehydrogenation?

KPK Mock 4
Chemistry
Hydrocarbons
Introduction to Hydrocarbons
A) COCH3
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B) (CH 3)2 CHOH
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C) (CH3)3COH
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D) CH3CH2OH
Show Explanation

A neutron with K.E equal to 0.04ev is called?

KPK Mock 4
Chemistry
A) Slow neutron
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B) Thermal neutron
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C) Fast neutron
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D) Both (a) and (b)
Show Explanation

All of the following are micronutrients except:

Chemistry
KPK Mock 4
Chemistry
Environmental Chemistry
A) Iron
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B) Copper
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C) Zinc
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D) Magnesium
Show Explanation

Which one of the following acids has a strong conjugate base?

KPK Mock 4
Chemistry
Acids, Bases and Salts
A) CH3COOH
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B) HCl
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C) HNO3
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D) H2SO4
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Pka values of some acids are given below:
Choose the weaker acid?

KPK Mock 4
Chemistry
Carboxylic Acids and its Derivatives
A) HClO4 (–10)
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B) HBr (–9)
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C) H2SO4 (–3)
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D) HCl (–7)
Show Explanation

The van der waals equation of state for no-ideal gases differs from the ideal gas law in that it accounts for:

I) The mass of each molecule of the gas.

II) The volume of each molecule of the gas.

III) The attractive forces between molecules of the gas

KPK Mock 4
Chemistry
Chemical Bonding
A) I , II and III
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B) I and II only
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C) I and III only
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D) II and III only
Show Explanation

Choose the correct Statement:

KPK Mock 4
Chemistry
Experimental Techniques in Chemistry
A) The most direct and accurate method for determining atomic masses uses mass spectroscopy.
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B) The indirect but accurate method for determining molecular masses uses mass spectroscopy.
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C) Collision between the electrons and the atoms produces negative ions by absorption of electrons by atoms or moecules.
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D) The first application of the mass spectroscopy was the demonstration to detect various isotopes of Argon.
Show Explanation

Semi-conductor materials have:

KPK Mock 4
Chemistry
Industrial Chemistry
A) Ionic bond
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B) Covalent bond
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C) Mutual bond
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D) Metallic bond
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Chemical shift in NMR spectroscopy is expressed as delta (δ) or tan (t) scale. Choose the correct relationship between δ and t:

KPK Mock 4
Chemistry
Experimental Techniques in Chemistry
A) δ = 10 – t
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B) δ = 10 + t
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C) t = δ – 10
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D) t = 10 – δ
Show Explanation

Which one is a polymer substance?

KPK Mock 4
Chemistry
Macromolecules
Polymerization Process
A) Glass
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B) Iron
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C) Plastic
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D) copper
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Select the incorrect statement:

Chemistry
KPK Mock 4
Chemistry
Atomic Structure
A) Molecule may gain electron to form molecular anion.
Show Explanation
B) Molecule may lose electron to form molecular cation
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C) Molecular cations are less abundant than molecular anions
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D) These molecular ions can be formed by passing high energy electron beam through a gas.
Show Explanation

Which statement is incorrect about ionization energy?

Chemistry
KPK Mock 4
Chemistry
Chemical Bonding
A) Ionization energy depends upon the magnitude of nuclear charge
Show Explanation
B) Ionization energy depends upon the atomic radius
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C) Ionization energy depends upon the shielding effect
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D) Ionization energy does not depend upon the penetration effect of the inner orbital
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What are the values of principal quantum number and azimuthal quantum number for the last electron in Chlorine atom?

KPK Mock 4
Chemistry
Atomic Structure
A) 1.6
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B) 1.3
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C) 3.1
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D) 6.1
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Which is the correct statement?

Chemistry
KPK Mock 4
Chemistry
States of Matter – Gases, Liquids and Solids
A) The average kinetic energy of the molecules depends on the volume in which the gas is enclosed
Show Explanation
B) The average kinetic energy of the molecules in the gaseous state is proportional to the pressure.
Show Explanation
C) The average kinetic energy of the molecules in the gaseous state is proportional to the temperature.
Show Explanation
D) All of the above
Show Explanation

Radiation damages living organism is primarily due to:

KPK Mock 4
Chemistry
Environmental Chemistry
A) Excitation phenomena
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B) Ionization
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C) Photo electric effect
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D) Heating
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E) All of them
Show Explanation

The proton acceptor is:

KPK Mock 4
Chemistry
Acids, Bases and Salts
A) NH3
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B) BF3
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C) HCL
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D) H*
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Choose the correct order of reactivity of alkyl halides?

KPK Mock 4
Chemistry
Alkyl Halides and Amines
A) R – 1 > R – Br > R – Cl > R – F
Show Explanation
B) R – Br > R – I > R – F > R – Cl
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C) R – F > R – Cl> R – Br > R – l
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D) R – Cl> R – l > R – Br > R – l
Show Explanation

Ruther ford‘s scattering experiment demonstrates:

KPK Mock 4
Chemistry
Analytical Chemistry
A) The existance of X-rays
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B) The existence of negative particles
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C) The mass to charge ratio of electron
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D) The nuclear model of the atom
Show Explanation

The heat of combustion of hydrocarbon is very useful source of heat and power, considering the combustion reaction given below.
CH4(g) +O2(g) →CO2(o) + 2H2O
△H for the reaction is.

KPK Mock 4
Chemistry
Thermochemistry
Heat Capacity and Calorimetry
A) △H = 213 kcal/mole
Show Explanation
B) △H= 231 kcal/mole
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C) △H= 426 kcal/mole
Show Explanation
D) △H= 312 kcal/mole
Show Explanation

The statement that heat cannot spontaneously flow from a colder to a hotter body is a result of:

KPK Mock 4
Chemistry
States of Matter
A) Henry‘s law
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B) The first law of thermodynamics
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C) The second law of thermodynamics
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D) The third law of thermodynamics
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The rate law equation for reaction is given as dx/dt = K[FeCl3][KI]2 the reaction is:

KPK Mock 4
Chemistry
Reaction Kinetics
A) First order
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B) Second order
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C) Third order
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D) Pseudo first order
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Waxes are the esters of fatty acids with high molecular weight.

KPK Mock 4
Chemistry
Carboxylic Acids and its Derivatives
A) Monohydroxy alcohols
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B) Dihydroxy alcohol
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C) Trihydroxy alcohol
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D) All of the above
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Select the ligand which is bidentate and can form chelates:

KPK Mock 4
Chemistry
Solution and Colloids
A) CH3 NH2
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B) PH3
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C) H2O
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D) CH2(NH2)CH2(NH2)
Show Explanation

When 2-Bromo-2-methyl propane undergoes unimolecular elimination reaction, the product obtained will be:

Chemistry
KPK Mock 4
Chemistry
Alkyl Halides and Amines
A) 2-Methyl propane:
Show Explanation
B) 2-Methyl propene:
Show Explanation
C) 2-Methyl-1 propanol
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D) 2-pentanol
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In P type substances, the charge carriers in minorities are:

KPK Mock 4
Chemistry
Industrial Chemistry
A) Holes
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B) Electrons
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C) Protons
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D) Positive ions
Show Explanation

The partition coefficients of Iodine distribution between two immiscible liquids, water and carbon (tetrachloride) is given below:

Choose the correct statement about the system:

KPK Mock 4
Chemistry
Solution and Colloids
A) Iodine is extracted from CCl4 layer by water
Show Explanation
B) Iodine is extracted from aqueous layer by CCl4
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C) Iodine is more soluble in water than CCl4
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D) The value of K depends on the amount of Iodine added
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Hydrolysis of ester in the presence of KOH is called:

KPK Mock 4
Chemistry
Fundamental Principles of Organic Chemistry
A) Estrification
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B) Decarboxylation
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C) Saponification
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D) Neutralization
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Hydrogen bonding do not exist in the molecule of:

Chemistry
KPK Mock 4
Chemistry
Chemical Bonding
A) Hydrogen
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B) Proteins
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C) Carbohydrates
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D) Ammonia
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Coal, natural gas and petroleum are generally called:

Chemistry
KPK Mock 4
Chemistry
Environmental Chemistry
A) Fossil fuels
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B) Renewable sources
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C) Infiinite sources
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D) None of the above
Show Explanation

The order of reducing power of halide ion is:

KPK Mock 4
Chemistry
Periodicity in Elements
A) I–1> Br–>Cl–> F–
Show Explanation
B) F–>Cl–> Br–> l–
Show Explanation
C) l–1>Cl–> F–> Br–
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D) Br–>Cl–> l–> F–
Show Explanation

Choose the correct Statement:

KPK Mock 4
Chemistry
Chemical Equilibrium
A) 2Li7 + 2He4 →5B10 + 1n0 2Li7 + 2He4 →5B9 +0p1
Show Explanation
B) 4Be9 + 2He4 →6C12 + 0n1 4Be9 + 2He4 →6C12 + 1p
Show Explanation

Stable electronic configuration of Cu(29) is:

KPK Mock 4
Chemistry
Atomic Structure
A) [Ar] 4S2 3d4
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B) [Ar] 4S0 3d10
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C) [Ar] 4S1 3d10
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D) [Ar] 4S2 3d7 4p2
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During a experiment, one measured the mass of a mosquito and found it to be 1.20 × 10–5 Kg. The numbers of significant figures in this case are:

KPK Mock 4
Chemistry
Stoichiometry
A) Five
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B) One
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C) Two
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D) Three
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The atomic number of scandium is 21. What is its ground state electronic configuration?

KPK Mock 4
Chemistry
Atomic Structure
A) 1s22N22p63N23p63d3
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B) 1s22N22p63N23p63d34s1
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C) 1s22N22p63N23p63d34s2
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D) 1s22N22p63N23p63d34p1
Show Explanation

Choose the correct statement:

DDT an insecticide is considered as:

KPK Mock 4
Chemistry
Industrial Chemistry
A) Very unstable molecule having half-life 1⁄2 to 1 year
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B) Unstable molecule having half-life 2 to 5 years
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C) Stable molecule having half-life 5 to 8 years
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D) Very stable molecule having half-life 10 to 15 years
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N2 + 3H2 → 2NH3

In the above reaction, the limiting reagent is:

KPK Mock 4
Chemistry
Chemical Equilibrium
A) N2
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B) H2
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C) Ammonia
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D) None of the above
Show Explanation

NH4OH(aq) ⇌ NH4+(aq)+ OH–(aq)

Consider the above ionization, Ammonium chloride is added to the system.

Select the correct statement.

KPK Mock 4
Chemistry
Chemical Equilibrium
A) The equilibrium will shift to the right
Show Explanation
B) The equilibrium will shift to the left
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C) The equilibrium will remain undisturbed
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D) The equilibrium will be attained quickly
Show Explanation

Excess of ethanol is heated with conc: sulphuric acid keeping the temperature 140°C. The product formed is

KPK Mock 4
Chemistry
Carboxylic Acids and its Derivatives
A) C2H5OC2H5 + H2O
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B) C2 H4
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C) C2 H5 OH
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D) C2 H6
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