During inspiration, the area of the thoracic cavity will

Sindh Mock 4
Biology
Gaseous Exchange
Respiratory System of Man
A) Contract
Show Explanation
B) Increase
Show Explanation
C) Decrease
Show Explanation
D) Damage
Show Explanation

Which one of the following combinations of statements is true of saccharides in living organisms?

Sindh Mock 4
Biology
Biological Molecules
Carbohydrates
A) Option A
Show Explanation
B) Option B
Show Explanation
C) Option C
Show Explanation
D) Option D
Show Explanation
E) Option E
Show Explanation

Which of the following bacteria possesses a spherical shape?

Sindh Mock 4
Biology
Kingdom Prokaryote
Size and Structure of Bacteria
A) Bacillus anthracis
Show Explanation
B) Escherichia coli
Show Explanation
C) Spirillum minus
Show Explanation
D) Staphylococcus aureus
Show Explanation

Sperms are developed at what temperature?

Sindh Mock 4
Biology
Reproduction
Reproduction in Males
A) Lower than the body temperature.
Show Explanation
B) Higher than the body temperature.
Show Explanation
C) Body temperature.
Show Explanation
D) All of the above.
Show Explanation

A pure breeding plant with the dominant phenotype of character P and the recessive phenotype of character Q was crossed with another pure breeding plant with the recessive phenotype of character P and the dominant phenotype of Q. The offspring of this cross were crossed with a double homozygous recessive for P and Q and the following results were obtained:

22 were phenotypically dominant for P and recessive for Q
5 were phenotypically dominant for both P and Q
4 were phenotypically recessive for both P and Q
24 were phenotypically recessive for P and dominant for Q
Which one of the following types of Inheritance is illustrated by these results?

Sindh Mock 4
Biology
Variation and Genetics
Mendelian Inheritance
A) gene linkage of P and Q
Show Explanation
B) Independent segregation of P and Q
Show Explanation
C) Mendelian dihybrid Inheritance
Show Explanation
D) multiple alleles
Show Explanation

The following reaction occurs in the human alimentary canal.

What is the enzyme and the product?

Sindh Mock 4
Biology
A) Option A
Show Explanation
B) Option B
Show Explanation
C) Option C
Show Explanation
D) Option D
Show Explanation

Mendel concluded that each organism has two hereditary factors for each trait, now called:

Sindh Mock 4
Biology
Variation and Genetics
Mendelian Inheritance
A) Chromatids
Show Explanation
B) Alleles
Show Explanation
C) Chromosomes
Show Explanation
D) None of the above
Show Explanation

The massive accumulation of blood within a tissue is called:

Sindh Mock 4
Biology
Transport
A) Haemorrhage
Show Explanation
B) Haematoma
Show Explanation
C) Hepatoma
Show Explanation
D) Haemocoel
Show Explanation

A Dutch scientist firstly observed very small creatures in

Sindh Mock 4
Biology
Kingdom Prokaryote
Taxonomy, Ecology & Diversity of Bacteria
A) Vinegar
Show Explanation
B) Saliva
Show Explanation
C) Rain water
Show Explanation
D) All of Above
Show Explanation

Some enzymes require the presence of a non protein molecule to behave catalytically. An enzyme devoid of this molecule is called a(n):

Sindh Mock 4
Biology
A) Holoenzyme
Show Explanation
B) Apoenzyme
Show Explanation
C) Coenzyme
Show Explanation
D) Zymoenzyme
Show Explanation

Scurvy is caused by deficiency of vitamin ______.

Sindh Mock 4
Biology
Nutrition
Some Common Diseases Related to Nutrition
A) A
Show Explanation
B) B
Show Explanation
C) C
Show Explanation
D) D
Show Explanation

During aristotle time, it was thought that

Sindh Mock 4
Biology
Evolution
A) Organisms ranged from simple to complex.
Show Explanation
B) One type of organism gives rise to another type of organism.
Show Explanation
C) Both a and b.
Show Explanation
D) All living things are specially created by nature.
Show Explanation

Which of the following processes is the reverse of condensation?

Sindh Mock 4
Biology
Biological Molecules
Introduction to Biological Molecules
A) Hydrolysis
Show Explanation
B) Dehydration synthesis
Show Explanation
C) Polymerization
Show Explanation
D) Vapourization
Show Explanation

Plant pigments responsible for red, yellow, and orange colors in many fruits and vegetables are:

Sindh Mock 4
Biology
Bioenergetics
Photosynthetic pigments
A) Chlorophyll A
Show Explanation
B) Chlorophyll b
Show Explanation
C) Carotenoids
Show Explanation
D) Cellulose
Show Explanation

Which of the following step occurs immediately after binding of Ca2+ with a troponin molecule during muscle contraction?

Sindh Mock 4
Biology
Support and Movement
Ultrastructure & Mechanism of Skeletal Muscle Contraction
A) Binding sites of actin get attached to the myosin head
Show Explanation
B) Troponin uncovers the actin binding sites
Show Explanation
C) Ca2+ goes back inside sarcoplasmic reticulum
Show Explanation
D) Tropomyosin gets removed from the binding sites of actin filaments
Show Explanation

The question attached below belongs to the topic of phenols:

Sindh Mock 4
Chemistry
Alcohol, Phenols, and Ethers
A) Resorcinol
Show Explanation
B) Aspirin
Show Explanation
C) Picric acid
Show Explanation
D) Mesitol
Show Explanation

Phenotypic ratio of monohybrid cross in producing F2 generation is:

Sindh Mock 4
Biology
Variation and Genetics
Mendelian Inheritance
A) 3:1
Show Explanation
B) 9:3:3:1
Show Explanation
C) 1:1:2:1
Show Explanation
D) 1:1:1:1
Show Explanation

The bicep and tricep muscles are located in:

Sindh Mock 4
Biology
Support and Movement
Types of Muscles
A) Shank
Show Explanation
B) Upper arm
Show Explanation
C) Shoulder
Show Explanation
D) Lower jaw
Show Explanation

An enzyme increases the speed of a reaction:

Sindh Mock 4
Biology
A) by adding activation energy requirements
Show Explanation
B) by lowering the activation energy requirements
Show Explanation
C) by decreasing the concentration of products
Show Explanation
D) by increasing the concentration of products
Show Explanation

Which group of organisms has the following features?

I. three pairs of jointed legs

II. three-part segmented body

III. one pair of antennae

Sindh Mock 4
Biology
Kingdom Animalia
Phylums – porifera to chordata
A) arachnids
Show Explanation
B) crustaceans
Show Explanation
C) Insects
Show Explanation
D) myriapods
Show Explanation

Which of the following statements about the systemic effect of bacterial cells is true?

Sindh Mock 4
Biology
Kingdom Prokaryote
Importance and Control of bacteria
A) Gram-negative bacteria are more likely to cause systemic effects because they lack an outer membrane which means they can more quickly to infect host cells
Show Explanation
B) Gram-negative bacteria are more likely to cause systemic effects because their outer membrane protects them from antibiotics
Show Explanation
C) Both Options A and B are correct
Show Explanation
D) None of these options is correct
Show Explanation

All of the following are mammals EXCEPT the:

Sindh Mock 4
Biology
Kingdom Animalia
Phylums – porifera to chordata
A) Porpoise
Show Explanation
B) Shark
Show Explanation
C) Whale
Show Explanation
D) Walrus
Show Explanation

The virus can only survive and reproduce inside a:

Sindh Mock 4
Biology
Bio-diversity | Variety of Life
A) Animal Cell
Show Explanation
B) Bacterial cell
Show Explanation
C) Living cell
Show Explanation
D) Non-living cell
Show Explanation

The diagram shows the inheritance of haemophilia in a family.

What is the genotype of person 7?

Sindh Mock 4
Biology
Variation and Genetics
Inherited Diseases
A) XHXH
Show Explanation
B) XHY
Show Explanation
C) XHXh
Show Explanation
D) XhXh
Show Explanation

Which part of the cell does glycolysis occur in?

Sindh Mock 4
Biology
Bioenergetics
Respiration Mechanism – Glycolysis to Electron Transport Chain
A) Mitochondrion
Show Explanation
B) Chloroplast
Show Explanation
C) Cytoplasm
Show Explanation
D) Nucleus
Show Explanation

In a laboratory, while working on a new species of fish, it is found that the fish has two varieties, red and brown. It was determined by another group of scientísts in another laboratory that brown is a dominant color in this species. If we have brown fish with us in the laboratory, how can we determine whether they are homozygous or heterozygous for the trait?

Sindh Mock 4
Biology
Variation and Genetics
Mendelian Inheritance
A) Breed this fish with a redfish and check Fl generation
Show Explanation
B) Breed this fish with a redfish and check F2 generation
Show Explanation
C) Breed this fish with a brown fish and check Fl generation
Show Explanation
D) Breed this fish with a brown fish and check F2 generation
Show Explanation

What protein, present in sarcomeres, is responsible for the passive elasticity of muscle?

Sindh Mock 4
Biology
Support and Movement
Human Skeleton
A) collagen
Show Explanation
B) myosin
Show Explanation
C) titin
Show Explanation
D) actin and myosin
Show Explanation

Which of the following phyla of Kingdom Animalia do humans belong to?

Sindh Mock 4
Biology
Kingdom Animalia
Phylums – porifera to chordata
A) Mollusca
Show Explanation
B) Arthropoda
Show Explanation
C) Echinodermata
Show Explanation
D) Chordata
Show Explanation

The following sequence of events occurs at the neuromuscular junction. nerve impulse -> release of V -> end plate potential -> W produced in muscle fibre -> X release from sarcoplasmic reticulum -> Formation of Y -> muscle contraction.Which one of the following shows the correct sequence from V -> Y?

Sindh Mock 4
Biology
Coordination and Control
Steps Involved in Nervous Coordination
A) Option A
Show Explanation
B) Option B
Show Explanation
C) Option C
Show Explanation
D) Option D
Show Explanation

The diagram shows some similarities between golgi apparatus, mitochondria and suicide sacs.

Sindh Mock 4
Biology
Cell Structure and Function
Cytoplasm and Organelles
A) Option A
Show Explanation
B) Option B
Show Explanation
C) Option C
Show Explanation
D) Option D
Show Explanation

Which of the following is NOT a difference that would allow one to distinguish between a prokaryotic and a eukaryotic cell?

Presence or absence of the nucleus
Presence or absence of the cell wall
Membrane bound versus no membrane bound organelles
Sindh Mock 4
Biology
Cell Structure and Function
Prokaryotic and Eukaryotic Cells
A) I only
Show Explanation
B) II only
Show Explanation
C) III only
Show Explanation
D) I and II only
Show Explanation

Which of the following is NOT a viral disease?

Sindh Mock 4
Biology
Bio-diversity | Variety of Life
A) AIDS
Show Explanation
B) Malaria
Show Explanation
C) Influenza
Show Explanation
D) Chickenpox
Show Explanation

Which of the following types and functions of the neuron is correct?

Sindh Mock 4
Biology
Coordination and Control
Steps Involved in Nervous Coordination
A) Option A
Show Explanation
B) Option B
Show Explanation
C) Option C
Show Explanation
D) Option D
Show Explanation

Which type of protein structure contains the three dimensional structure?

Sindh Mock 4
Biology
Biological Molecules
Proteins
A) Primary
Show Explanation
B) Secondary
Show Explanation
C) Tertiary
Show Explanation
D) Quaternary
Show Explanation

Living things that would be the first to experience adverse effects if large amounts of carbon dioxide were taken out of the biosphere are:

Sindh Mock 4
Biology
Nutrition
Autotrophic Nutrition
A) Decomposers (e.g. bacteria and fungi)
Show Explanation
B) Producers (e.g. green plants)
Show Explanation
C) Primary consumers (e.g. mice)
Show Explanation
D) Secondary consumers (e.g. snakes)
Show Explanation

Dietary fiber passes through to several structures after leaving the stomach. In which order does the dietary fiber pass through the structures?

Sindh Mock 4
Biology
Nutrition
Digestion and Absorption
A) Duodenum -> jejunum -> ileum -> rectum -> colon
Show Explanation
B) ileum -> duodenum -> colon -> jejunum -> rectum
Show Explanation
C) ileum -> duodenum -> jejunum -> rectum -> colon
Show Explanation
D) Colon -> duodenum -> ileum -> rectum -> jejunum
Show Explanation
E) duodenum -> jejunum -> ileum -> colon -> rectum
Show Explanation

Which features do animal cells share with plant cells?

Sindh Mock 4
Biology
Cell Structure and Function
Compare the structure of a typical plant and animal cell
A) Option A
Show Explanation
B) Option B
Show Explanation
C) Option C
Show Explanation
D) Option D
Show Explanation

The disease night blindness is caused by deficiency of vitamin:

Sindh Mock 4
Biology
Nutrition
Some Common Diseases Related to Nutrition
A) A
Show Explanation
B) B
Show Explanation
C) C
Show Explanation
D) D
Show Explanation

Optimum pH for action of pepsin and salivary amylase is

Sindh Mock 4
Biology
Nutrition
Digestion and Absorption
A) 3.5 and 7.7 respectively
Show Explanation
B) 1.8 and 6.8 respectively
Show Explanation
C) 6.8 and 7.4 respectively
Show Explanation
D) 1.8 and 7.4 respectively
Show Explanation

Which statement about dominant and recessive alleles is not correct?

Sindh Mock 4
Biology
Variation and Genetics
Mendelian Inheritance
A) A dominant characteristic is seen in the phenotype of a heterozygote.
Show Explanation
B) A homozygous genotype may be either dominant or recessive.
Show Explanation
C) Recessive phenotypes always have two recessive alleles.
Show Explanation
D) The phenotype of a homozygote is always dominant.
Show Explanation

Which vertebrate groups have scaly skin?

Sindh Mock 4
Biology
Kingdom Animalia
Phylums – porifera to chordata
A) amphibians and fish
Show Explanation
B) amphibians and mammals
Show Explanation
C) fish and mammals
Show Explanation
D) fish and reptiles
Show Explanation

Cartilage is a form of:

Sindh Mock 4
Biology
Support and Movement
Support and Movement in Animals
A) Cardiac tissue
Show Explanation
B) Connective tissue
Show Explanation
C) Epithelial tissue
Show Explanation
D) Nervous tissue
Show Explanation

What happens during muscle contraction to the length of each myosin and actin filament?

Sindh Mock 4
Biology
Support and Movement
Ultrastructure & Mechanism of Skeletal Muscle Contraction
A) The A-band becomes short
Show Explanation
B) The I-band elongates
Show Explanation
C) There is no change in the sarcomere length
Show Explanation
D) The Z-lines get closer
Show Explanation

The diagram represents two liquids, separated by a membrane through which osmosis can occur.

What movement of molecules will occur?

Sindh Mock 4
Biology
Transport
A) Molecules of dissolved substance move from left to right.
Show Explanation
B) Molecules of dissolved substance move from right to left.
Show Explanation
C) Overall, water molecules move from left to right.
Show Explanation
D) Overall, water molecules move from right to left.
Show Explanation

When a color-blind male marries a normal female, what will be the chances of colorblindness in his grandsons, if his daughter is married to a normal male?

Sindh Mock 4
Biology
Variation and Genetics
Inherited Diseases
A) 16%
Show Explanation
B) 25%
Show Explanation
C) 50%
Show Explanation
D) 100%
Show Explanation

Muscle contraction depends on:

Sindh Mock 4
Biology
Support and Movement
Ultrastructure & Mechanism of Skeletal Muscle Contraction
A) Nerve impulse
Show Explanation
B) Energy
Show Explanation
C) Calcium
Show Explanation
D) All of these options are correct
Show Explanation

Which row correctly shows the areas of the gas exchange system that contain cartilage, ciliated epithelium and goblet cells?

Sindh Mock 4
Biology
Gaseous Exchange
Respiratory System of Man
A) Option A
Show Explanation
B) Option B
Show Explanation
C) Option C
Show Explanation
D) Option D
Show Explanation

During which of the following levels of biological organization can natural selection occur?

Sindh Mock 4
Biology
Variation and Genetics
A) Gene
Show Explanation
B) Individual
Show Explanation
C) Group
Show Explanation
D) All of these
Show Explanation

Ovulation is induced by ______ hormone secreted by the pituitary gland.

Sindh Mock 4
Biology
Reproduction
Reproduction in Females
A) Follicle stimulating
Show Explanation
B) Estrogen
Show Explanation
C) Luteinizing hormone
Show Explanation
D) Progesterone
Show Explanation

The phenomenon in which the effect of one allele in heterozygous genotype completely masks the effect of other is called

Sindh Mock 4
Biology
Variation and Genetics
Exceptions To Mendelian Inheritance
A) codominance
Show Explanation
B) dominance
Show Explanation
C) incomplete dominance
Show Explanation
D) complete dominance
Show Explanation

Flower colour is controlled by a single pair of alleles. The allele for red flowers is dominant to the allele for white flowers.

A plant homozygous for red flowers is crossed with a plant

homozygous for white flowers. All the resulting plants have red flowers (F1 generation).

When the F1 generation crosses with each other, 18 plants are obtained. 12 plants have red flowers and 6 have white flowers (F2 generation).

What ratio is expected in the F2 generation and what ratio has been obtained?

Sindh Mock 4
Biology
Variation and Genetics
Mendelian Inheritance
A) Option A
Show Explanation
B) Option B
Show Explanation
C) Option C
Show Explanation
D) Option D
Show Explanation

In which of the following nitrogen compounds, does N has the highest oxidation state?

Sindh Mock 4
Chemistry
Electrochemistry
Oxidation Number or State
A) NH2OH
Show Explanation
B) N2H4
Show Explanation
C) HNO3
Show Explanation
D) NH3
Show Explanation

Which of the following is not secreted by thyroid gland?

Sindh Mock 4
Biology
Coordination and Control
Endocrine System and its Hormones
A) Thyroxin
Show Explanation
B) Triiodothyronine
Show Explanation
C) Calcitonin
Show Explanation
D) Glucagon
Show Explanation

The genome of viruses is composed of

Sindh Mock 4
Biology
Bio-diversity | Variety of Life
A) DNA
Show Explanation
B) RNA
Show Explanation
C) Protien
Show Explanation
D) Either DNA or RNA
Show Explanation

Referring to sexual reproduction, humans are:

Sindh Mock 4
Biology
Reproduction
Reproduction in Males
A) Hermaphrodites
Show Explanation
B) Vivaparous
Show Explanation
C) Oviparous
Show Explanation
D) Self-fertilized
Show Explanation

The system responsible for fighting the pathogens is:

Sindh Mock 4
Biology
Transport
Immunity and its types
A) Muscular System
Show Explanation
B) Endocrine System
Show Explanation
C) Nervous System
Show Explanation
D) Immune System
Show Explanation

Which one of the following is Multiple allelic characters?

Sindh Mock 4
Biology
Variation and Genetics
A) Colour of flower in pea plant
Show Explanation
B) Blood group of the human being
Show Explanation
C) Shape of seed in pea plant
Show Explanation
D) Length of stem in pea plant
Show Explanation

The diagram shows some of the organs of the human body.

In which organs does the digestion of carbohydrates take place?

Sindh Mock 4
Biology
Nutrition
Digestion and Absorption
A) P and Q
Show Explanation
B) P and R
Show Explanation
C) Q and R
Show Explanation
D) Q and S
Show Explanation

Which one of the following is exclusively marine phylum?

Sindh Mock 4
Biology
Kingdom Animalia
Phylums – porifera to chordata
A) Mollusca
Show Explanation
B) Echinodermata
Show Explanation
C) Annelida
Show Explanation
D) Arthropoda
Show Explanation

One type of congenital heart defect is called atrial septal defect (ASD) where the left and right atria are not completely separated. ASD usually results in blood moving from the left atrium into the right atrium. This will cause increased blood pressure in the right atrium and decreased blood pressure in the left atrium. Which of the following rows describes the other effects of ASD on blood pressure and oxygenation?

Sindh Mock 4
Biology
Transport
A) Option A
Show Explanation
B) Option B
Show Explanation
C) Option C
Show Explanation
D) Option D
Show Explanation

The hormone labelled X in the diagram is often used in over-the-counter diagnostic tests to determine when ovulation has occurred. This hormone is:

Sindh Mock 4
Biology
Reproduction
Reproduction in Males
A) estrogen
Show Explanation
B) progesterone
Show Explanation
C) FSH
Show Explanation
D) LH
Show Explanation

In the human body, blood circulating from the gut to the heart passes through the:

Sindh Mock 4
Biology
Transport
A) Aorta
Show Explanation
B) Kidneys
Show Explanation
C) Liver
Show Explanation
D) Lungs
Show Explanation

Two animals are mated. One is homozygous dominant for one character and homozygous recessive for another. The other animal Is heterozygous for both characters. How many phenotypes are expected in the offspring of this cross?

Sindh Mock 4
Biology
Variation and Genetics
Mendelian Inheritance
A) 1
Show Explanation
B) 2
Show Explanation
C) 3
Show Explanation
D) 4
Show Explanation

Many sarcomeres in series make up the length of a:

Sindh Mock 4
Biology
Support and Movement
Ultrastructure & Mechanism of Skeletal Muscle Contraction
A) Microtubules
Show Explanation
B) Myofibril
Show Explanation
C) Myosin filament
Show Explanation
D) M-line
Show Explanation

All of the following are reflex actions EXCEPT:

Sindh Mock 4
Biology
Coordination and Control
Coordination in Animals
A) Change in the size of the pupil in response to light
Show Explanation
B) Swallowing of the bolus
Show Explanation
C) Sudden jerky withdrawal of hand when pricked
Show Explanation
D) Knees jerk in response to a blow
Show Explanation

In nostrils, the substance which moistens and keep the incoming air warm is called :

Sindh Mock 4
Biology
Gaseous Exchange
Respiratory System of Man
A) Bronchi
Show Explanation
B) Mucous
Show Explanation
C) Pharynx duct
Show Explanation
D) Glottis
Show Explanation

Which one of the following is a fish?

Sindh Mock 4
Biology
Kingdom Animalia
Phylums – porifera to chordata
A) Flying fish
Show Explanation
B) Salmon
Show Explanation
C) Sea horse
Show Explanation
D) All of the above
Show Explanation

Scapula is a:

Sindh Mock 4
Biology
Support and Movement
Human Skeleton
A) Tail bone
Show Explanation
B) Hip bone
Show Explanation
C) Skull bone
Show Explanation
D) Shoulder bone
Show Explanation

If a cross section of a sarcomere is seen, each myosin is surrounded by how many actin molecules?

Sindh Mock 4
Biology
Support and Movement
Ultrastructure & Mechanism of Skeletal Muscle Contraction
A) 5
Show Explanation
B) 6
Show Explanation
C) 7
Show Explanation
D) 8
Show Explanation

Homozygous means:

Sindh Mock 4
Biology
Variation and Genetics
Mendelian Inheritance
A) alleles in an organism
Show Explanation
B) two different alleles of a gene.
Show Explanation
C) having two identical genes
Show Explanation
D) having two identical alleles of a gene.
Show Explanation

Statements
I. She topped in her collage
II. She is hard-working

Sindh Mock 4
Logical Reasoning
Cause and Effect
A) Both statements are of some common cause
Show Explanation
B) Statement 1 is the cause and 2 is its effect
Show Explanation
C) Statement 2 is the cause then 1 is its effect.
Show Explanation
D) Both of the statements are effect of independent causes
Show Explanation

Complete the series A25, B625, C15625, ________?

Sindh Mock 4
Logical Reasoning
Letters and Symbols Series
A) D390625
Show Explanation
B) D364748
Show Explanation
C) D390524
Show Explanation
D) D390525
Show Explanation

Statement:
There has been an unprecedented increase in the number of successful candidates in this year’s School Leaving Certificate Examination.
COURSE OF ACTION:
I. The government should make arrangements to increase number of seats of intermediate courses in existing college.
II. The government should take active steps to open new colleges to accommodate all these successful candidates.

Sindh Mock 4
Logical Reasoning
Cause and Effect
A) Both of them follow
Show Explanation
B) None of them follow
Show Explanation
C) Only I follows
Show Explanation
D) Only II follows
Show Explanation

If ‘-‘ means’+’, ‘+’ means’-‘, ‘*’ means ‘÷’ and ‘÷’ means ‘*’ then which of the following will be the correct equation?

Sindh Mock 4
Logical Reasoning
Critical Thinking
A) 30 + 5 + 14 – 10 * 15 = 122.
Show Explanation
B) 10 + 5 – 14 ÷ 10 * 15 = 158.
Show Explanation
C) 30 – 5 + 14 ÷ 10 * 15 = 162.
Show Explanation
D) 30 * 5 – 4 + 10 + 15 = -15.
Show Explanation

Statements:
I. The farmers have decided against selling their Kharif crops to the government agencies.
II. The government has reduced the procurement price of Kharif crops starting from last month to the next six months.

Sindh Mock 4
Logical Reasoning
Course of Action
A) Statement I is the cause and statement II is its effect
Show Explanation
B) Statement II is the cause and statement I is its effect
Show Explanation
C) Both statements I and II are independent causes
Show Explanation
D) Both statements I and II are effects of independent causes
Show Explanation

If’-‘ means ‘+’, ‘+’ mean ‘-‘, ‘x’ mean ‘÷’ and ‘÷’ mean ‘x’ then which of the following will be the correct equation?

Sindh Mock 4
Logical Reasoning
Letters and Symbols Series
A) 30 + 5 + 14 – 10 x 15 = 122
Show Explanation
B) 10 + 5 – 14 ÷ 10 x 15 = 158
Show Explanation
C) 30 – 5 + 14 ÷ 10 x 15 = 162
Show Explanation
D) 30 x 5 – 4 ÷ 10 + 15 = 31
Show Explanation

Choose the lettered word or phrase that is most nearly opposite in meaning to the word in capital letters:

SUPREMACY

Sindh Mock 4
English
Key Vocabulary
A) Excellency
Show Explanation
B) Sovereignty
Show Explanation
C) Inferiority
Show Explanation
D) Influence
Show Explanation

Choose the word most similar in meaning to the capitalized ones.

WRECKED:

Sindh Mock 4
English
Key Vocabulary
A) Defined
Show Explanation
B) Developed
Show Explanation
C) Registered
Show Explanation
D) Ruined
Show Explanation

Choose the lettered word or phrase that is most nearly opposite in meaning to the word in capital letters:

PATRIOTISM

Sindh Mock 4
English
Key Vocabulary
A) Nationalism
Show Explanation
B) Socialism
Show Explanation
C) Obsession
Show Explanation
D) Disloyalty
Show Explanation

Choose the correct spelling:

Sindh Mock 4
English
Key Vocabulary
A) Amatuer
Show Explanation
B) Amature
Show Explanation
C) Amateur
Show Explanation
D) Ameteur
Show Explanation

Choose the word most similar in meaning to the capitalized ones.

SQUASH:

Sindh Mock 4
English
Key Vocabulary
A) Squeeze
Show Explanation
B) Beat
Show Explanation
C) Evolution
Show Explanation
D) Pace
Show Explanation

Identify the word or phrase that needs to be changed for the sentence to be correct.

The guests broke a dozen glass at the party. No error

Sindh Mock 4
English
Identify errors in sentence
A) The guests
Show Explanation
B) broke
Show Explanation
C) glass
Show Explanation
D) at
Show Explanation

Choose the correct sentence:

Sindh Mock 4
English
Tenses and Sentence Structure
A) ali lives in dubai, the United arab emirates.
Show Explanation
B) Ali lives in dubai, the united arab emirates.
Show Explanation
C) Ali lives in Dubai, in the United Arab Emirates.
Show Explanation
D) Ali livesinDubai, the United Arab Emirates.
Show Explanation

Mr. Ahmed is to old to work now; he depends upon his son. No error.

Sindh Mock 4
English
Identify errors in sentence
A) Mr.
Show Explanation
B) To
Show Explanation
C) Work now
Show Explanation
D) Depends
Show Explanation

Complete the sentences by choosing the most appropriate word, from the given lettered choices (A to E) below:

Somebody has not turned the tap ________ .

Sindh Mock 4
English
Fill in the blank
A) of
Show Explanation
B) off
Show Explanation
C) over
Show Explanation
D) in
Show Explanation

Choose the word most similar in meaning to the capitalized one:

MEDITATIVE:

Sindh Mock 4
English
Key Vocabulary
A) Selfish
Show Explanation
B) Thoughtful
Show Explanation
C) Heedless
Show Explanation
D) Opinion
Show Explanation

Choose the word most similar in meaning to the capitalized one:

MEDITATIVE:

Sindh Mock 4
English
Key Vocabulary
A) Selfish
Show Explanation
B) Thoughtful
Show Explanation
C) Heedless
Show Explanation
D) Opinion
Show Explanation

Complete the sentence by choosing the most appropriate option:

Some people ______ claim to be vegetarians actually allow themselves to eat fish and chicken.

Sindh Mock 4
English
Fill in the blank
A) that
Show Explanation
B) which
Show Explanation
C) whom
Show Explanation
D) who
Show Explanation

Choose the word most similar in meaning to the capitalized one.
SHABBY:

Sindh Mock 4
English
Key Vocabulary
A) Organized
Show Explanation
B) Untidy
Show Explanation
C) Reluctant
Show Explanation
D) Sensible
Show Explanation

Complete the sentences by choosing the most appropriate option, from the given lettered choices (A to D) below each.

The milkman ____ many bottles of milk to our school every day.

Sindh Mock 4
English
Fill in the blank
A) delivers
Show Explanation
B) has deliver
Show Explanation
C) have deliver
Show Explanation
D) Delivering
Show Explanation

Identify the word or phrase that needs to be changed for the sentence to be correct.

You cannot leave now. The lions and tigers will appear in a minute. No error

Sindh Mock 4
English
Identify errors in sentence
A) You
Show Explanation
B) The lions
Show Explanation
C) Tigers
Show Explanation
D) Appear
Show Explanation
E) No error
Show Explanation

Identify the word or phrase that needs to be changed for the sentence to be correct.

It’s too late to go for a walk now; besides, it’s beginning to rain.

Sindh Mock 4
English
Identify errors in sentence
A) It’s
Show Explanation
B) go
Show Explanation
C) besides
Show Explanation
D) beginning
Show Explanation
E) No Error
Show Explanation

Questions 7-8 are based on the following passage.

The fact that we were all as safe as kittens under a cook-stove did not, however, assuage in the least the fine despair and the grotesque desperation which seized upon the residents of the East Side when the cry spread like a grass fire that the dam had given way. Some of the most dignified, staid, cynical, and clear thinking men in town abandoned their wives, stenographers, homes, and offices and ran east. There are few alarms in the world more terrifying than’ The dam has broken! There are few persons capable of stopping to reason when that clarion cry strikes upon their ears, even persons who live in towns no nearer than five hundred miles to a dam.

The phrase “spread like a grass fire” means

Sindh Mock 4
English
Passage
A) Rapid spread
Show Explanation
B) Fire fighting
Show Explanation
C) Grass growth
Show Explanation
D) Dreadful sight
Show Explanation

Complete the sentences by choosing the most appropriate option, from the given lettered choices.

Our football team has _______ off the remarkable feat of winning the championship for three years in succession.

Sindh Mock 4
English
Fill in the blank
A) brought
Show Explanation
B) brought of
Show Explanation
C) had brought
Show Explanation
D) have brought
Show Explanation

If the potential difference of 1 volt is applied across the end of a conductor and the current flowing through the conductor is one ampere then the resistance of the conductor is said to be?

Sindh Mock 4
Physics
Electrostatics
A) 1 Farad
Show Explanation
B) 10 Coulomb
Show Explanation
C) 1 Ohm
Show Explanation
D) 1 coulomb
Show Explanation

If a voltage of 9V is applied between ends of a wire whose resistance is 0.2 ohm, what will be the resulting current?

Sindh Mock 4
Physics
Current Electricity
Electric Current
A) 30
Show Explanation
B) 35
Show Explanation
C) 40
Show Explanation
D) 45
Show Explanation

Equations of kinetics are valid only when the acceleration is:

Sindh Mock 4
Physics
Forces and Motion
A) Increasing
Show Explanation
B) Decreasing
Show Explanation
C) Constant
Show Explanation
D) Vary with time
Show Explanation

A cyclist is moving towards the right with an acceleration of 4m/sec2. At t=0, he has traveled 5m moving towards the right at 15 m/sec. What will be his position at t = 2 seconds?

Sindh Mock 4
Physics
Forces and Motion
A) 36
Show Explanation
B) 38
Show Explanation
C) 41
Show Explanation
D) 43
Show Explanation

The following question belongs to the topic of momentum:

Sindh Mock 4
Physics
Circular Motion & Momentum
A) Current
Show Explanation
B) Length
Show Explanation
C) Angular momentum
Show Explanation
D) Torque
Show Explanation

The rate of change of angular velocity with respect to _____ defines angular acceleration.

Sindh Mock 4
Physics
Circular Motion & Momentum
A) Speed
Show Explanation
B) Frequency
Show Explanation
C) Distance
Show Explanation
D) Time
Show Explanation

Assume that you have two balls of Identical volume, one weighing 2 Newtons and the other 10 Newtons. Both are falling freely after being released from the same point simultaneously. Which of the following will then be true:

I. The 10 N ball falling freely from rest will be accelerated at a greater rate than the 2 N ball

II. At the end of the 4s of freefall, the 10 N ball will have 5 times the momentum of the 2 N ball

III. At the end of the 4s of free fall, the 10 N ball will have the same kinetic energy as the 2 N ball

IV. The 10 N ball possesses greater inertia than the 2 N ball

Sindh Mock 4
Physics
Forces and Motion
A) I, Il and Ill only
Show Explanation
B) I and II only
Show Explanation
C) II and IV only
Show Explanation
D) IV only
Show Explanation

A car is travelling in a straight line along a highway at a constant speed of 80miles per hour for 10 seconds. Find its acceleration.

Sindh Mock 4
Physics
Forces and Motion
A) 100 m/s2
Show Explanation
B) 200 m/s2
Show Explanation
C) 0m/s2
Show Explanation
D) 150m/s2
Show Explanation

Which process is shown in the graph between pressure and volume given below?

Sindh Mock 4
Physics
Heat and Thermodynamics
First Law of Thermodynamics
A) Adiabatic
Show Explanation
B) Isobaric
Show Explanation
C) Isochoric
Show Explanation
D) Isothermal
Show Explanation

During radioactive decay of a nucleus zXA, β emission takes place along with the daughter nucleus. Because of this beta particle emission, the mass number (A) of the parent nucleus:

Sindh Mock 4
Physics
Nuclear Physics
Radioactivity
A) Remains constant
Show Explanation
B) Decreases by 1
Show Explanation
C) Increases by 1
Show Explanation
D) Decreases by 2
Show Explanation

A bulb having a resistance of 150 Ω is connected to a 225 volt source, the current in the bulb will be:

Sindh Mock 4
Physics
Current Electricity
Electric Current
A) 1.5 A
Show Explanation
B) 10 A
Show Explanation
C) 3.7350 A
Show Explanation
D) 250 A
Show Explanation

Fusion and fission reactions are associated with:

Sindh Mock 4
Physics
Nuclear Physics
Nuclear Reactions
A) Water or hydal energy
Show Explanation
B) Geothermal energy
Show Explanation
C) Fossil fuel energy
Show Explanation
D) Nuclear energy
Show Explanation

A neutron travels a distance of 12 m in a time interval of 3.6 x 10-4 s. Assuming its speed was constant, its kinetic energy is: (take 1.7 x 10-27 kg as the mass of neutron)

Sindh Mock 4
Physics
Work, Power & Energy
A) 3.1 eV
Show Explanation
B) 4.7 eV
Show Explanation
C) 5.78 eV
Show Explanation
D) 6.91 eV
Show Explanation

Two capacitors C1 = 3 uF and C2 = 6 uF are in series across a 90 volts D.C. supply. The total capacitance is given by:

Sindh Mock 4
Physics
Electrostatics
A) 9 uF
Show Explanation
B) 2 uF
Show Explanation
C) 10 uF
Show Explanation
D) 90 uF
Show Explanation

A particle is projected at an angle of 45 degrees with a velocity of 9.8 m/s. The horizontal range will be:

(g=9.8 m/s2)

Sindh Mock 4
Physics
Forces and Motion
Motion in Two Dimensions
A) 9.8 /√2 m
Show Explanation
B) 9.8 √3 m
Show Explanation
C) 9.8 m
Show Explanation
D) 4.9 m
Show Explanation

The following question belongs to the topic of motion:

Sindh Mock 4
Physics
Forces and Motion
A) Average velocity
Show Explanation
B) Uniform velocity
Show Explanation
C) Instantaneous velocity
Show Explanation
D) Variable velocity
Show Explanation

In electronic circuits, a PN junction diode is used to convert alternating current into direct current. This process is called:

Sindh Mock 4
Physics
Electronics
A) Rectification
Show Explanation
B) Amplification
Show Explanation
C) Doping
Show Explanation
D) Integrated Circuit
Show Explanation

Identify the example/s of Static Equilibrium:

I. A book lying on a horizontal table
II. A building
III. A bridge

Sindh Mock 4
Physics
Scalars and Vectors
Equilibrium of Forces
A) I only
Show Explanation
B) II and III only
Show Explanation
C) I and III only
Show Explanation
D) III only
Show Explanation
E) I, II and III
Show Explanation

The shortest wavelength photon emitted in Balmer series is:

Sindh Mock 4
Physics
Atomic Spectra
Inner Shell Transitions And Characteristic X-rays
A) 1.0974 nm
Show Explanation
B) 4 nm
Show Explanation
C) 364.6 nm
Show Explanation
D) 3.64 m
Show Explanation

A point source of light is placed at the principal focus of a concave lens. Which of the following will be true of the
refracted light:

I. It will diverge

II. It will be parallel to the principal
axis

III. it will seem to come from a point ½ of the radius of curvature from the
lens

IV. It will converge

Sindh Mock 4
Physics
Optics, Nature of Light and Optical Instruments
A) I, II and III only
Show Explanation
B) I and III only
Show Explanation
C) II and IV only
Show Explanation
D) IV only
Show Explanation

A convex lens of focal length 20 cm, is used to form an erect image that is twice as large as the object. The position of the object will be ______ from the lens.

Sindh Mock 4
Physics
Optics, Nature of Light and Optical Instruments
A) 20 cm
Show Explanation
B) 5 cm
Show Explanation
C) 10 cm
Show Explanation
D) 30 cm
Show Explanation

The combination of ammeter, voltmeter, and ohmmeter into a compact single meter with one common galvanometer is called:

Sindh Mock 4
Physics
Magnetism and Electromagnetic Induction
Galvanometer
A) Post office box
Show Explanation
B) AVO meter
Show Explanation
C) Meter bridge
Show Explanation
D) Microscope
Show Explanation

A body of mass 5 kg, initially at rest, is moved by a horizontal force of 2N on a smooth horizontal surface. Find the work done by the force in 10 sec:

Sindh Mock 4
Physics
Work, Power & Energy
A) 40 J
Show Explanation
B) 30 J
Show Explanation
C) 50 J
Show Explanation
D) 20 J
Show Explanation

The instrument(s) which work on the principle of Wheatstone bridge is/are:

Sindh Mock 4
Physics
Current Electricity
Wheatstone Bridge and Potentiometer
A) Meter Bridge
Show Explanation
B) The Post Office Box
Show Explanation
C) Carey Foster’s Bridge
Show Explanation
D) Calendar
Show Explanation
E) All of the these options
Show Explanation

The half-life of C14 is about:

Sindh Mock 4
Physics
Nuclear Physics
Radioactivity
A) 1637 years
Show Explanation
B) 892 years
Show Explanation
C) 10 years
Show Explanation
D) 100 years
Show Explanation
E) 5730 years
Show Explanation

If we increase the cross-section area of a conductor having a length L, the resistance R of that conductor will be:

Sindh Mock 4
Physics
Current Electricity
Ohms Law
A) Zero
Show Explanation
B) Constant
Show Explanation
C) Increasing
Show Explanation
D) Decreasing
Show Explanation

_______ is a device which makes use of mutual induction for stepping up or down an alternating e.m.f.

Sindh Mock 4
Physics
Magnetism and Electromagnetic Induction
Mutual and Self Induction
A) Sonometer
Show Explanation
B) Transformer
Show Explanation
C) Ammeter
Show Explanation
D) Voltmeter
Show Explanation

A 100 watt bulb is operated by 240 volts, the current through the bulb will be:

Sindh Mock 4
Physics
Current Electricity
Electric Current
A) 2.4 A
Show Explanation
B) 240 A
Show Explanation
C) 0.416 A
Show Explanation
D) 41.6 A
Show Explanation

Two vectors S and R are such that S= 4, R= 6 and S.R= 13.5. Find the angle between S and R.

Sindh Mock 4
Physics
Scalars and Vectors
Product of Two Vectors
A) 11.77
Show Explanation
B) 22.99
Show Explanation
C) 55.77
Show Explanation
D) 77.81
Show Explanation

The scalar product of (2i – j + 3k) . (3i + 2j – k)?

Sindh Mock 4
Physics
Scalars and Vectors
Basic Concepts of Vectors
A) 1
Show Explanation
B) 2
Show Explanation
C) 10
Show Explanation
D) 20
Show Explanation

A microscope has an objective of 10 mm focal length and an eye piece of 25 mm focal length. What is the distance between the lenses, if the object is in sharp focus when it is 10.5 mm from the objective?

Sindh Mock 4
Physics
Optics, Nature of Light and Optical Instruments
Magnifying and Resolving Power of Optical Instruments
A) 115 mm
Show Explanation
B) 235 mm
Show Explanation
C) 417 mm
Show Explanation
D) 716 mm
Show Explanation

A body of mass 0.025 kg attached to a spring is displaced through 0.1 m to the right of the equilibrium position. If the spring constant is 0.4 =N/m and its velocity at the end of displacement is 0.4 m/sec, then its total energy will be:

Sindh Mock 4
Physics
Work, Power & Energy
A) 4 x 10-3 J
Show Explanation
B) 0.0002 J
Show Explanation
C) 0.000001 J
Show Explanation
D) 0.2 J
Show Explanation

A steel rod has a length of 15 m at a temperature of 30°C. If the temperature is raised to 45°C. The increase in its length is:

(α= 1.1 x 10-5 K-1)

Sindh Mock 4
Physics
Heat and Thermodynamics
Kinetic Theory of Gases
A) 537.1 x 10-5 m
Show Explanation
B) 447.5 x 10-5 m
Show Explanation
C) 327.5 x 10-5 m
Show Explanation
D) 247.5 x 10-5 m
Show Explanation

A battery has an e.m.f of 6.0 volts and an internal resistance of 0.4 ohm. It is connected to a 2.6 ohm resistor through a SPST (single pole, single throw switch):

When the switch is closed, the potential difference between the terminal Is, in volts is:

Sindh Mock 4
Physics
Current Electricity
Electomotive Force and Potential Difference
A) 0
Show Explanation
B) 0.8
Show Explanation
C) 2.6
Show Explanation
D) 5.2
Show Explanation

Electromagnetic waves are produced by:

Sindh Mock 4
Physics
Dawn of Modern Physics
Electromagnetic Waves
A) Motion of electric and magnetic fields
Show Explanation
B) Chargeless particles
Show Explanation
C) A static charge
Show Explanation
D) Heat
Show Explanation

A sample of an ideal gas occupies a volume ‘V’ at pressure ‘P’ and absolute temperature ‘T’. The mass of each molecule is ‘m’. If ‘k’ is the Boltzmann constant then the density of the gas is:

Sindh Mock 4
Physics
Heat and Thermodynamics
First Law of Thermodynamics
A) mkt
Show Explanation
B) P/kT
Show Explanation
C) P/kTV
Show Explanation
D) mP/kT
Show Explanation

If an object is placed 30 cm from a convex lens whose focal length is 15 cm, the size of the image compared to the size of the object will be approximately:

Sindh Mock 4
Physics
Optics, Nature of Light and Optical Instruments
A) Twice as large
Show Explanation
B) More than twice as large
Show Explanation
C) 1.5 times as large
Show Explanation
D) Smaller
Show Explanation

If A = 2i + 3j – k , B = 4i + 2j – 2k . Find a vector x which is parallel to A but has the magnitude of B?

Sindh Mock 4
Physics
Scalars and Vectors
Product of Two Vectors
A) Option A
Show Explanation
B) Option B
Show Explanation
C) Option C
Show Explanation
D) Option D
Show Explanation

An object is dropped from the top of the building. If it takes 10 seconds to hit the ground, what is the height of the building?

Sindh Mock 4
Physics
Forces and Motion
A) 390 m
Show Explanation
B) 490 m
Show Explanation
C) 590 m
Show Explanation
D) 690 m
Show Explanation

If a constant current is flowing through a coil, then the flux through that coil will become constant. In such types of arrangements, the electromotive force (emf) induced in the coil will be:

Sindh Mock 4
Physics
Magnetism and Electromagnetic Induction
Faradays and Lenz Law and Induced EMF
A) Self-Inductance
Show Explanation
B) Zero
Show Explanation
C) Mutual-Inductance
Show Explanation
D) Back EMF
Show Explanation

An object with an initial velocity of 4m/s moves along a straight axis under constant acceleration. Three seconds later,its velocity is 14m/s. How far did it travel during this time?

Sindh Mock 4
Physics
Forces and Motion
A) 27 m
Show Explanation
B) 17 m
Show Explanation
C) 67 m
Show Explanation
D) 57 m
Show Explanation

The quantity of heat required to raise the temperature of one mole of a substance through 1 K is called:

Sindh Mock 4
Physics
Heat and Thermodynamics
First Law of Thermodynamics
A) Carnot engine
Show Explanation
B) Molar specific heat
Show Explanation
C) Kinetic specific heat
Show Explanation
D) General gas law
Show Explanation

A galvanometer has a resistance of 20 ohms and a full-scale deflection when a current of 0.001 ampere flows in it. What is the value of the series resistance to convert it into a voltmeter of range 10 volts?

Sindh Mock 4
Physics
Magnetism and Electromagnetic Induction
Galvanometer
A) 7780 ohms
Show Explanation
B) 9980 ohms
Show Explanation
C) 5580 ohms
Show Explanation
D) 4480 ohms
Show Explanation

The radius of the moon is 27% off the earth’s radius and its mass is 1.2% of the earth’s mass. Find the acceleration due to gravity on the surface of the moon:

Sindh Mock 4
Physics
Gravitation
Newton’s Law of Universal Gravitation
A) 0.431 m/s2
Show Explanation
B) 1.615 m/s2
Show Explanation
C) 2.431 m/s2
Show Explanation
D) 3.615 m/s2
Show Explanation

A car covers the first half of a certain distance with a speed V1 and the second half with a speed V2. Find the average speed during the whole journey:

Sindh Mock 4
Physics
Forces and Motion
A) Option A
Show Explanation
B) Option B
Show Explanation
C) Option C
Show Explanation
D) Option D
Show Explanation

Germanium and silicon are semiconductors having crystalline structures. Both these materials have ______ valence electrons in their outermost shells.

Sindh Mock 4
Physics
Current Electricity
Colour Code for Carbon Resistances
A) 2
Show Explanation
B) 4
Show Explanation
C) 6
Show Explanation
D) 8
Show Explanation

If a dielectric material is placed between two plates of a capacitor, the net capacitance of the capacitor:

Sindh Mock 4
Physics
Electrostatics
Capacitance of a Parallel Plate Capacitor
A) Decreases
Show Explanation
B) Increases
Show Explanation
C) Remains constant
Show Explanation
D) Zero
Show Explanation

When a body moves in the direction of gravitational force i.e. towards the earth, the work is done by the force of gravity on the body and is ______, whereas when the body moves against the direction of gravitational force, the corresponding work done is ______.

Sindh Mock 4
Physics
Gravitation
Newton’s Law of Universal Gravitation
A) negative … positive
Show Explanation
B) positive… negative
Show Explanation
C) positive … positive
Show Explanation
D) negative … negative
Show Explanation

The atomic spectra deals with the measurement of?

Sindh Mock 4
Physics
Atomic Spectra
Inner Shell Transitions And Characteristic X-rays
A) Wavelengths
Show Explanation
B) Intensities of electromagnetic radiations emitted by atoms
Show Explanation
C) Intensities of electromagnetic radiations absorbed by atoms
Show Explanation
D) All of these options
Show Explanation

A particle of charge -0.04C is projected with speed 2 x 104 m/s into a uniform magnetic field ‘B’ of strength 0.5 T. If the particle’s velocity as it enters the field is perpendicular to ‘B’, what is the magnitude of the magnetic force on this particle:

Sindh Mock 4
Physics
Magnetism and Electromagnetic Induction
A) 4 N
Show Explanation
B) 8 N
Show Explanation
C) 40 N
Show Explanation
D) 80 N
Show Explanation
E) 400 N
Show Explanation

Which one of the following statements is true concerning the motion of an ideal projectile launched at an angle of 45° to the horizontal?

Sindh Mock 3
Physics
Forces and Motion
Motion in Two Dimensions
A) The acceleration vector points opposite to the velocity vector on the way up and in the same direction as the velocity vector on the way down.
Show Explanation
B) The speed at the top of the trajectory is zero.
Show Explanation
C) The object’s total speed remains constant during the entire flight.
Show Explanation
D) The horizontal speed decreases on the way up and also decreases on the way down.
Show Explanation
E) The vertical speed decreases on the way up and increases on the way down.
Show Explanation

When electricity is passed through water in the presence of an acid, oxygen and ______ is produced.

Sindh Mock 4
Chemistry
Electrochemistry
Electrochemical Series
A) Carbon
Show Explanation
B) CO
Show Explanation
C) CO2
Show Explanation
D) Hydrogen
Show Explanation

1 mole of N2O4 (g) was placed in an empty 1 dm^3 container and allowed to reach equilibrium according to the following equation:

N2O4(g) 2NO2(g)

At equilibrium, x mole Of N2O4 (g) had dissociated. What is the value of the equilibrium constant, Kc, at the temperature of the Experiment?

Sindh Mock 4
Chemistry
Chemical Equilibrium
Equilibrium Constant
A) 2x / ( 1 – x)
Show Explanation
B) 4×2 / (1 – x)2
Show Explanation
C) 2x / (1 – x )2
Show Explanation
D) 4×2 / (1 – x)
Show Explanation

Which of the following properties depends upon the amount of matter present in the system?

Sindh Mock 4
Chemistry
A) Density
Show Explanation
B) Gibb’s free energy
Show Explanation
C) Pressure
Show Explanation
D) Temperature
Show Explanation

Which one of the following is the pure carbon compound and used as a reducing agent in industries?

Sindh Mock 4
Chemistry
Macromolecules
Introduction and Structure of Polymers
A) Coal tar
Show Explanation
B) Petroleum
Show Explanation
C) Coal gas
Show Explanation
D) Coke
Show Explanation

106 gram of Na2CO3 per dm3 of the solution of Na2CO3 in water, the concentration of the solution will be:

Sindh Mock 4
Chemistry
Stoichiometry
Limiting and Non Limiting Reagents
A) 1N
Show Explanation
B) 0.1 M
Show Explanation
C) 1M
Show Explanation
D) 0.02M
Show Explanation

When 3d orbital is complete, the next entering electron goes into:

Sindh Mock 4
Chemistry
Atomic Structure
Sub Atomic Particles and Their Discoveries
A) 4f
Show Explanation
B) 4s
Show Explanation
C) 4p
Show Explanation
D) 4d
Show Explanation

C12H22O11+ conc. H2SO4—> 12 C + ? + H2SO4

Sindh Mock 4
Chemistry
Stoichiometry
Theoretical Yield, Actual Yield and Percentage Yield
A) 11 H2O
Show Explanation
B) 11 O2
Show Explanation
C) 11 CO2
Show Explanation
D) 11 H2
Show Explanation

Which of the following statements is correct?

Sindh Mock 4
Chemistry
Acids, Bases and Salts
Acidic, Basic and Amphoteric Substances
A) H3PO3 is dibasic and reducing
Show Explanation
B) H3PO3 is tribasic and reducing
Show Explanation
C) H3PO3 is tribasic and non-reducing
Show Explanation
D) H3PO3 is dibasic and non-reducing
Show Explanation

Tritium, an isotope of hydrogen contains:

Sindh Mock 4
Chemistry
Atomic Structure
Sub Atomic Particles and Their Discoveries
A) An equal number of electrons and neutrons
Show Explanation
B) An equal number of electrons, protons and neutrons
Show Explanation
C) The number of neutrons is double the number of protons
Show Explanation
D) The number of protons is double the number of neutrons.
Show Explanation

In electrochemical series, elements are arranged in order of their standard electrode potentials, the correct decreasing reactivity order for metals is:

Sindh Mock 4
Chemistry
Electrochemistry
Electrochemical Series
A) Gold, silver, magnesium, aluminum
Show Explanation
B) Mercury, calcium, sodium, magnesium
Show Explanation
C) Sodium, aluminum, lead, copper
Show Explanation
D) Potassium, silver, magnesium, aluminum
Show Explanation

The amount of solute present in the given amount of solvent is called:

Sindh Mock 4
Chemistry
Solution and Colloids
Concentration Units of Solutions
A) Molarity
Show Explanation
B) Molality
Show Explanation
C) Concentration
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D) Solubility
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How many chain isomers are shown by C5H12?

Sindh Mock 4
Chemistry
Hydrocarbons
Introduction to Hydrocarbons
A) 5
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B) 4
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C) 3
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D) 2
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In SN1 reaction “1” stands for?

Sindh Mock 4
Chemistry
Alkyl Halides and Amines
Reactivity and Reactions of Alkyl Halides
A) Polar solvents
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B) Unimolecular
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C) Bimolecular
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D) Nucleophile
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Which of the following catalysts is used in the decomposition of laughing gas N2O at 1000 K?

2N2O 2N2 + O2

Sindh Mock 4
Chemistry
Periodicity in Elements
Introduction to the Periodic Table
A) Glycine
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B) V2O5
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C) Fe
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D) Traces of Cl2
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Write the chemical name of the given structure.

Sindh Mock 4
Chemistry
Hydrocarbons
Alkynes
A) 4-ethy1-25-hexadiyne
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B) 3-ethyl-1,4-hexadiene
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C) 3-ethyl-1,4-hexadiyne
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D) 3.ethyl-2,5-hexadiyne
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A vector such as the velocity of a body undergoing uniform translational motion, which can be displaced parallel to itself and applied to any point is known as:

Sindh Mock 4
Physics
Scalars and Vectors
Basic Concepts of Vectors
A) Unit vector
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B) Free vector
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C) Null vector
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D) Position vector
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If 4.6 gm of ethyl alcohol and 6.0 gm of acetic acid is kept at a constant temperature until equilibrium was established, 2.0 gm of unused acetic acid were present. What is the Kc?

Sindh Mock 4
Chemistry
Solution and Colloids
Colligative Properties of Solutions
A) 2.0
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B) 3.0
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C) 4.0
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D) 5.0
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In a zero-order reaction, the rate is independent of:

Sindh Mock 4
Chemistry
Reaction Kinetics
Order of reaction and its determination
A) The temperature of the reaction
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B) The concentration of reactants.
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C) Concentration of products
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D) Catalyst used
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The number of bond(s) between carbon and nitrogen atoms in a Nitrile is:

Sindh Mock 4
Chemistry
Chemical Bonding
Intermolecular Forces
A) One sigma and one pi
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B) Two sigma and one pi
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C) Only sigma
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D) One sigma and two pi
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Name the main product formed as a result of the following reaction

H3C – (CH2)5 – CH3 ————> Product

n-heptane

Conditions: 480 – 550 C, 150 – 399 psi V2O5

Sindh Mock 4
Chemistry
Hydrocarbons
Introduction to Hydrocarbons
A) Benzene
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B) Toluene
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C) Xylene
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D) Cyclohexane
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In the reaction 2Fe+Cl2 2FeCl3

Sindh Mock 4
Chemistry
Electrochemistry
Redox Equations
A) Fe is reduced
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B) Fe is oxidized
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C) Cl2 oxidized
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D) None of the above
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A catalyst increases the rate of reaction by:

Sindh Mock 4
Chemistry
Reaction Kinetics
Catalysis
A) decreasing the activation energy
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B) decreasing the concentration of reactants
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C) decreasing the temperature
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D) increasing the temperature
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Which of the following gases is used for welding purpose:

Sindh Mock 4
Chemistry
Hydrocarbons
Introduction to Hydrocarbons
A) ethene
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B) ethane
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C) propane
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D) ethyne
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A gas that reacts with CaO and not with NaHCO3 is:

Sindh Mock 4
Chemistry
Periodicity in Elements
Introduction to the Periodic Table
A) CO2
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B) CI2
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C) O2
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D) N2
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The nature of positive rays depends on:

Sindh Mock 4
Chemistry
Atomic Structure
Sub Atomic Particles and Their Discoveries
A) The nature of the electrode:
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B) The nature of the discharge tube
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C) The nature of the residual gas.
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D) The shape of the electrode
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