MDCAT Past Paper 2020

Created by Ali Durrani

MDCAT 2020

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1 / 200

The common name of the following aldehyde is:

PMC 2020
Chemistry
Aldehydes and Ketones
Elimination Tool:

A) α – Methyl – Ɣ – Chloro Propionaldehyde

B) β – Chloro – Ɣ – Methyl – Propionaldehyde

C) β – Chloro – α – Methyl Propionaldehyde

D) β – Methyl – α – Chloro Propionaldehyde

2 / 200

Alkyl halides involving -C-X bond breakage and -C-Nu bond formation simultaneously would follow the mechanism:

PMC 2020
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) SN1

B) SN2

C) E1

D) E2

3 / 200

The exact reactivity order for carboxylic acid derivatives is:

PMC 2020
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Anhydride > Acylchloride > ester

B) Ester > Anhydride > Acylchloride

C) Amide > Acylchloride > ester

D) Acylchloride > Anhydride > ester

4 / 200

Generic formula of cycloalkane is:

PMC 2020
Chemistry
Hydrocarbons
Elimination Tool:

A) CnH2n+2

B) CnH2n

C) CnH2n – 1

D) CnH2n – 2

5 / 200

Which of the following has lowest e/m ratio?

PMC 2020
Chemistry
Atomic Structure
Elimination Tool:

A) Li+2

B) H+

C) He+

D) Be

6 / 200

Hydrolysis of acyl chloride results in the formation of:

PMC 2020
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Acid anhydride

B) Carboxylic acid

C) Amides

D) Esters

7 / 200

The efficiency of chemical reaction can be expressed as:

PMC 2020
Chemistry
Stoichiometry
Elimination Tool:

A) Theoretical yield

B) Actual yield

C) % yield

D) Maximum yield

8 / 200

The first ionization energy is maximum for:

PMC 2020
Chemistry
Chemical Bonding
Elimination Tool:

A) Na

B) Mg

C) Al

D) K

9 / 200

In a vessel, 10 g N2, 10 g H2 and 10g O2 are present. Which one will have least number of atoms?

PMC 2020
Chemistry
Stoichiometry
Elimination Tool:

A) H2

B) N2

C) O2

D) Both H2 and N2

10 / 200

IUPAC name of C6H5 – CH2 – CH2 – NH2 is:

PMC 2020
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

A) 2-phenyl ethenamine

B) 2-phenyl ethanamine

C) 2-phenyl ethylamine

D) 3-phenyl ethanamine

11 / 200

The type of isomerism existing in a compound of molecular formula C2H6O is:

PMC 2020
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

A) Functional group

B) Position

C) Chain

D) Metamerism

12 / 200

The study of rates of chemical reactions and the factors that affect the rates of chemical reactions is known as:

PMC 2020
Chemistry
Reaction Kinetics
Elimination Tool:

A) Thermodynamics

B) Stoichiometry

C) Electrochemistry

D) Chemical Kinetics

13 / 200

A) n=2, l=1

B) n=1, l=2

C) n=1, l=0

D) n=2, l=0

14 / 200

Purification of table salt (NaCl) by passing HCl gas through its saturated aqueous solution is an example of:

PMC 2020
Chemistry
Chemical Equilibrium
Elimination Tool:

A) Law of mass action

B) Hess’s law

C) Common ion effect

D) Henry’s law

15 / 200

The thermal energy at constant pressure is called:

PMC 2020
Chemistry
Thermochemistry
Elimination Tool:

A) Enthalpy

B) Internal Energy

C) Heat capacity

D) Work done

16 / 200

The empirical formula of Glucose C6H12O6 is:

PMC 2020
Chemistry
Stoichiometry
Elimination Tool:

A) C6H12O6
B) CHO
C) CH2O
D) CH2O2

A) C6H12O6

B) CHO

C) CH2O

D) CH2O2

17 / 200

In alkanes, each carbon has hybridization:

PMC 2020
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

A) sp3

B) sp

C) sp2

D) dsp

18 / 200

The equation N2(g)+ 3H2(g)⇋ 2NH3(g)represents:

PMC 2020
Chemistry
Chemical Equilibrium
Elimination Tool:

A) Contact process

B) Haber’s process

C) Solvay process

D) Avogadro’s Law

19 / 200

The relationship between quantum number n and l is:

PMC 2020
Chemistry
Atomic Structure
Elimination Tool:

A) n = l – 1

B) l = n – 2

C) l = n – 1

D) n = l – 2

20 / 200

Electrophile in sulphonation of benzene is:

PMC 2020
Chemistry
Hydrocarbons
Elimination Tool:

A) HSO4-

B) H2SO4

C) SO3

D) HSO3

21 / 200

The Lattice energy is also called as:

PMC 2020
Chemistry
Chemical Bonding
Elimination Tool:

A) Energy of affinity

B) Bond energy

C) Crystal energy

D) Potential energy

22 / 200

CO2 and SO2 both are tri-atomic molecules but heat of vaporization of SO2 is greater than that of CO2 due to:

PMC 2020
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) High electronegativity of S

B) Greater size of SO2

C) SO2 is polar and CO2 is non-polar

D) SO2 is more acidic than CO2

23 / 200

For which of the following order of the reaction, rate of reaction is inversely proportional to the concentration reaction?

PMC 2020
Chemistry
Reaction Kinetics
Elimination Tool:

A) 1st order reaction

B) 2nd order reaction

C) Negative order of reaction

D) Zero order of reaction

24 / 200

One Calorie is equal to:

PMC 2020
Chemistry
Thermochemistry
Elimination Tool:

A) 4.18 KJ

B) 4.18 J

C) 0.418 KJ mol-1

D) 0.418 KJ

25 / 200

The oxidation state of “S’ in the (S2O3)-2 is:

PMC 2020
Chemistry
Electrochemistry
Elimination Tool:

A) +4

B) +6

C) -2

D) +2

26 / 200

Which of the following reagent is used to separate and purify carbonyl and non carbonyl compounds?

PMC 2020
Chemistry
Aldehydes and Ketones
Elimination Tool:

A) HCN

B) BrMgCH3

C) NaHSO3

D) H2O

27 / 200

Which of the following reaction has greater Kp than Kc?

PMC 2020
Chemistry
Chemical Equilibrium
Elimination Tool:

A) 2NO + Cl2 2NOCl

B) 2SO2 + O2 2SO3

C) 2NOCl 2NO + Cl2

D) N2 + 3H2 2NH3

28 / 200

In 3rd series of transition elements, paramagnetic behaviour is maximum for Mn +2 and :

PMC 2020
Chemistry
d and f Block Elements
Elimination Tool:

A) Cr3+

B) Ti3+

C) V3+

D) Zn2+

29 / 200

Acetophenone can be formed by which of the following reaction for benzene?

PMC 2020
Chemistry
Alcohol, Phenols, and Ethers
Elimination Tool:

A) Alkylation

Acylation

C) Halogenation

D) Nitration

30 / 200

Densities of alkali metals are low due to:

PMC 2020
Chemistry
s and p Block Elements
Elimination Tool:

A) Weak intermolecular forces

B) Large atomic volume

C) Smaller size

D) Ns1 configuration

31 / 200

Magnesium reacts with nitrogen to form:

PMC 2020
Chemistry
s and p Block Elements
Elimination Tool:

A) Mg2N2

B) Mg3N2

C) MgN2

D) MgN

32 / 200

Which of the following hybrid orbitals has maximum “s” character?

PMC 2020
Chemistry
Chemical Bonding
Elimination Tool:

A) Sp3 hybrid orbital

B) Sp2 hybrid orbital

C) Sp hybrid orbital

D) Dsp2 hybrid orbital

33 / 200

Electronic configuration of chromium (Proton number 24) is:

PMC 2020
Chemistry
d and f Block Elements
Elimination Tool:

A) [Ar] 3d4 4s2

B) [Ar] 3d2 4s2

C) [Ar] 3d5 4s1

D) [Ar] 3d5 4s2

34 / 200

Select the organic compound which belongs to Arene family:

PMC 2020
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

A) CH2 = CH2

B) CH3 – O – CH3

C) CH3 – NH2

D) C6H6

35 / 200

Quantum number values for ‘2p’ orbitals are:

PMC 2020
Chemistry
Atomic Structure
Elimination Tool:

A) n=2, l=1

B) n=1, l=2

C) n=1, l=0

D) n=2, l=0

36 / 200

Phenol is more acidic than alcohols because of the following reason:

PMC 2020
Chemistry
Alcohol, Phenols, and Ethers
Elimination Tool:

A) Delocalization of negative charge in OH group

B) Delocation of positive charge on the carbon atom in ring

C) Delocalization of negative charge in the ring

D) Delocalization of positive charge in the OH group

37 / 200

Which pair has 1 electron in it’s ‘s’ orbital?

PMC 2020
Chemistry
Atomic Structure
Elimination Tool:

A) Li & Fe

B) Na & Cr

C) K & Mn

D) H & He

38 / 200

Which of the following compounds show geometric isomerism?

PMC 2020
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

A) Option A

B) Option B

C) Option C

D) Option D

39 / 200

When CH3 is attached to the benzene ring, it makes the ring a:

PMC 2020
Chemistry
Hydrocarbons
Elimination Tool:

A) Good electrophile

B) Good nucleophile

C) Resonance hybrid

D) Extraordinary stable

40 / 200

Phenol is known as:

PMC 2020
Chemistry
Alcohol, Phenols, and Ethers
Elimination Tool:

A) Carpolic acid

B) Carbonylic acid

C) Carbolic acid

D) Carbolylic acid

41 / 200

L – Asparaginase enzyme has been used for the treatment of:

PMC 2020
Chemistry
Chemistry of Life
Elimination Tool:

A) Jaundice
B) Blood cancer
C) Rickets
D) Heart disease

A) Jaundice

B) Blood cancer

C) Rickets

D) Heart disease

42 / 200

Based on the physico-chemical properties, proteins may be classified into the following types:

PMC 2020
Chemistry
Chemistry of Life
Elimination Tool:

A) Simple proteins

B) Compound proteins

C) Derived proteins

D) All of the above

43 / 200

During oxidation process, oxidation number of an element:

PMC 2020
Chemistry
Electrochemistry
Elimination Tool:

A) Decreases

B) Increases

C) Remains constant

D) Both decreases and increases

44 / 200

R-X on reaction with alcohols form:

PMC 2020
Chemistry
Alkyl Halides and Amines
Elimination Tool:

R-OH

ROR

R-X-OH

RH

45 / 200

Which of the following substances has giant covalent structure?

PMC 2020
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) Iodine crystal

B) Solid CO2

C) Silica

D) White phosphorus

46 / 200

The actual volume of gas molecules is considered negligible at following pressures:

PMC 2020
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) 2 atm

B) 4 atm

C) 6 atm

D) 8 atm

47 / 200

Which of the following is the strongest acid?

PMC 2020
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Propanoic acid

B) Fluoroethanoic acid

C) Trichloroethanoic acid

D) Nitroethanoic acid

48 / 200

For a gaseous phase reaction, when number of moles of reactants and products are equal:

PMC 2020
Chemistry
Chemical Equilibrium
Elimination Tool:

A) The values of Kp and Kc are different

B) The value of Kp is greater than Kc

C) The value of Kc is greater than Kp

D) The values of Kp and Kc are the same

49 / 200

Following has IUPAC name of:

PMC 2020
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

A) 2, 3 – tetramethyl butane

B) 2, 2, 3, 3 – tetramethyl pentane

C) 3, 3, 4, 4 – tetramethyl butane

D) 3, 4 – bis (dimethyl butane)

50 / 200

According to the general gas equation, density of an ideal gas depends upon:

PMC 2020
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) Pressure

B) Temperature

C) Molar Mass

D) All of these

51 / 200

Based on function, thyroxine can be classified as:

PMC 2020
Chemistry
Chemistry of Life
Elimination Tool:

A) Hormonal protein
B) Structural protein
C) Transport protein
D) Genetic protein

A) Hormonal protein

B) Structural protein

C) Transport protein

D) Genetic protein

52 / 200

The unit of the rate constant is the same as that of the rate of reaction in:

PMC 2020
Chemistry
Reaction Kinetics
Elimination Tool:

A) Zero order reaction

B) First order reaction

C) Second order reaction

D) Third order reaction

53 / 200

Which of the following has the lowest vapour pressure at 20 degrees Centigrade?

PMC 2020
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

A) Diethyl ether

B) Chloroform

C) Carbon tetrachloride

D) Water

54 / 200

The transition element which does not show variable valency is:

PMC 2020
Chemistry
d and f Block Elements
Elimination Tool:

A) Cu

B) Sc

C) Zn

D) Cr

55 / 200

For the reaction, A(g) -> products:

When the concentration of A(g) doubles, the rate of reaction increases four folds, which means it is:

PMC 2020
Chemistry
Reaction Kinetics
Elimination Tool:

A) Negative order reaction

B) First order reaction

C) Zero order reaction

D) Second order reaction

56 / 200

The common oxidation number of halogens is:

PMC 2020
Chemistry
Electrochemistry
Elimination Tool:

A) -1

B) +1

C) -2

D) 0

57 / 200

Born Haber cycle is used to determine:

PMC 2020
Chemistry
Thermochemistry
Elimination Tool:

A) Electron affinity

B) Lattice energy

C) Crystal energy

D) All of the above

58 / 200

Potassium, Rubidium, Cesium react with oxygen to form which types of oxides?

PMC 2020
Chemistry
s and p Block Elements
Elimination Tool:

Peroxide

B) Superoxide

Suboxide

D) Normal oxide

59 / 200

Which of the following has the highest value of electronegativity?

PMC 2020
Chemistry
s and p Block Elements
Chemical Bonding
Elimination Tool:

A) I

B) Br

C) Cl

D) F

60 / 200

We prefer fruits ____ sweets.

PMC 2020
English

Then

On

Over

From

61 / 200

Not only the parents but also their son ______ for interview.

PMC 2020
English
Fill in the blank
Elimination Tool:

Has called

Have called

Have been called

Has been called

62 / 200

Identify the errors and choose the correct option:

I hope this letters finds in the best of your spirits.

I hope this letter will find you in good of high spirits.

I hope this letter finds you in the best of your spirit.

I hope letter finds you in the best of spirits.

I hope the letter found in greatest of sprite.

63 / 200

Identify the errors and choose the correct option:

Guliver travels was written to Swift.

Guliver travels was written at Swift.

Guliver’s Travels was written by Swift.

Gulivers’ Travel was written by Swift.

64 / 200

Choose the correctly punctuated sentence:

PMC 2020
English
Grammar and Punctuation
Elimination Tool:

What a fall was there, my country men! Long live the king!

What a fall was there! My countrymen. Long live the king!

What a fall was there, my countrymen. Long live the king.

What a fall was there, my countrymen, long live the King.

65 / 200

Fill in the blank with appropriate article as required.

_____ umbrella is of no avail against a thunderstorm.

PMC 2020
English

No article required

An

A

The

66 / 200

Choose the correct spelling:

PMC 2020
English
Key Vocabulary

Cotioned

Cautioned

Causchuned

Coschuned

67 / 200

‘She always carried an umbrella’. The sentence indicates ____ tense.

PMC 2020
English
Tenses and Sentence Structure
Elimination Tool:

Present Simple

Past Simple

Past Perfect

Present Perfect

68 / 200

Choose the correct sentence:

I wish I have been a millionaire.

I wish I am being a millionaire.

I wish I were a millionaire.

I wish I was a millionaire.

69 / 200

Pick the correct option:

PMC 2020
English
Tenses and Sentence Structure
Elimination Tool:

His first inning’s consisted of four 6 and three 4.

His first innings consisted of four 6s and three 4s.

His first inning consisted of four 6’s and three 4’s.

His first ining’s consisted of four 6’s and three 4’s.

70 / 200

Choose the correct spelling:

PMC 2020
English
Key Vocabulary

Eccentric

Eckentric

Akcantric

Accentric

71 / 200

Pick the correct option:

A) No star is brighter than the moon.

B) No star is more bright than the moon.

C) No star is brighter then the moon

D) No star is brighter than moon.

72 / 200

Choose the correct spelling:

PMC 2020
English
Key Vocabulary

Exantuated

Axantuated

Accenchuated

Accentuated

73 / 200

Choose the correct option:

Knowledge and wisdom ____ no time for connection.

Has

Have

Had

Are

74 / 200

Choose the correct option:

PMC 2020
English
Tenses and Sentence Structure
Elimination Tool:

Every one of prisons are full

Every one of the prisons had full

Every one of the prisons have full

Every one of the prisons is full

75 / 200

Ahmed ____ me for a long time.

PMC 2020
English
Fill in the blank
Elimination Tool:

Know

Have known

Knows

Knew

76 / 200

Choose the correct spelling:

Defnite

Defanit

Dafanite

Definite

77 / 200

The headmaster ____ to speak to you.

Wants

Is wanting

Was wanting

Want

78 / 200

Choose the correctly structured sentence:

Had he lived in England he would miss his family.

Had he lived in England he would have missed his family.

Had he lived in England he had missed his family.

Had he live in England he will missed his family.

79 / 200

Choose the correct option:

PMC 2020
English
Tenses and Sentence Structure
Elimination Tool:

He and I was playing.

He and I were playing.

He and I were being playing.

He and I was being playing.

80 / 200

______ occurs because natural selection gives some alleles a better chance of survival than others:

PMC 2020
Biology
Evolution
Elimination Tool:

Fitness

Evolution

C) Crossing over

D) Artificial Selection

81 / 200

Which traits are most likely to affect men than women?

PMC 2020
Biology
Variation and Genetics
Sex Linkage
Elimination Tool:

X linked recessive

X linked dominant

Autosomal dominant

Autosomal recessive

82 / 200

The directional movement of an organism toward or away from the stimulus is called:

PMC 2020
Biology
Coordination and Control
Nature and Types of Behaviour
Elimination Tool:

A) Tropism

B) Orientation

C) Taxis

D) Non orientation

83 / 200

Gel electrophoresis is a technique:

PMC 2020
Biology
Biotechnology
Genetic Engineering & its tools
Elimination Tool:

A) Employed by forensic scientist to assist in the identification of the individuals by their respective type of DNA

B) Collect all the genes found in one complete set of chromosome

C) Is a technique to separate different sizeds fragment of charge bearing polymers (proteins, RNA or DNA)

D) Grows single cell or a group of cells in a glass ware on artificial medium under aseptic conditions

84 / 200

Which body function is controlled through a positive feedback mechanism?

PMC 2020
Biology
Coordination and Control
Feedback Mechanism
Elimination Tool:

Labor contractions

Body temperature

Insulin production

Thyroxine release

85 / 200

The organs which are similar in function but differ in structure are called:

PMC 2020
Biology
Evolution
Elimination Tool:

A) Analogous organs

B) Homologous organs

C) Convergent evolution

D) Divergent evolution

86 / 200

The excretion of hypertonic urine in humans is associated best with the:

PMC 2020
Biology
Homeostasis
Structure and Importance of the Kidney
Elimination Tool:

Glomerular capsule

Proximal convoluted tubule

Loop of Henle

Distal convoluted tubule

87 / 200

Photophosphorylation takes place in the _____ of the chloroplasts:

PMC 2020
Biology
Bioenergetics
Respiration Mechanism – Glycolysis to Electron Transport Chain
Elimination Tool:

A) Stroma

B) Granum

C) Inner membrane

D) Outer membrane

88 / 200

“Law of independent assortment” states:

PMC 2020
Biology
Chromosomes and DNA
Genetics
Elimination Tool:

A) That each pair of alleles assort independently of other pairs of alleles during gamete formation

B) That alleles of each pair of contrasting trait have unequal probability to assort with the alleles of other pair

C) That the two coexisting alleles for each trait segregate (separate) from each other at meiosis so that each gamete receives only one of the two alleles

D) That pertain to inheritance of single trait (monohybrid cross)

89 / 200

What is the function of Ribulose?

PMC 2020
Biology
Biological Molecules
Carbohydrates
Elimination Tool:

A) Intermediates in photosynthesis

B) Respiratory fuel

C) Intermediates in cellular respiration

D) Component of DNA and RNA

90 / 200

In ‘Complete Dominance’:

PMC 2020
Biology
Variation and Genetics
Exceptions To Mendelian Inheritance
Elimination Tool:

A) Different alleles of a gene are both expressed in heterozygous condition

B) One allele (R) is completely dominant over the other (r) and the presence of the recessive allele is functionally hidden, so the heterozygote (Rr) has the same round phenotype as (RR) homozygote.

C) The phenotype of the heterozygote is intermediate between phenotypes of the two homozygotes

D) Gene mutations may produce many different alleles of a gene

91 / 200

During meiosis, the homologous chromosomes come together and form pairs, this process is called:

PMC 2020
Biology
Cell Cycle
Meiosis
Elimination Tool:

Linkage

Synapsis

Pairing

Crossing over

92 / 200

Enzymes work by lowering the ______ of the reactions they catalyse:

PMC 2020
Biology
Enzymes
Elimination Tool:

A) Kinetic energy

B) Activation energy

C) Heat energy

D) Potential energy

93 / 200

Which of the following blood vessels have the highest pressure of blood?

PMC 2020
Biology
Transport
Elimination Tool:

A) Aorta

B) Pulmonary arteries

C) Pulmonary veins

D) Vena cava

94 / 200

The particular array of chromosomes that an individual possesses is called its:

PMC 2020
Biology
Chromosomes and DNA
The Chromosomal Theory of Inheritance
Elimination Tool:

Genotype

Phenotype

Karyotype

Allele

95 / 200

Which one of the following is found in both messenger RNA and DNA of a mammalian cell?

PMC 2020
Biology
Biological Molecules
Nucleic Acids
Elimination Tool:

A) Double helical structure

B) Ribose sugar

C) Thymine

D) Sugar – phosphate backbone

96 / 200

Tissue is a

PMC 2020
Biology
Cell Structure and Function
Introduction to Cell and it’s theory
Elimination Tool:

group of cells

group of organs

group of tissues

group of organisms

97 / 200

What do we call the cell surface membrane of a muscle fibre?

PMC 2020
Biology
Support and Movement
Ultrastructure & Mechanism of Skeletal Muscle Contraction
Elimination Tool:

Sarcolemma

Plasma membrane

Sarcoplasm

Myofibrils

98 / 200

Numerous opportunist diseases might attack people suffering from the following diseases?

PMC 2020
Biology
Bio-diversity | Variety of Life
Elimination Tool:

A) Measles

B) Influenza

C) Hepatitis A

D) AIDS

99 / 200

Which one of the following represents the changes that occur in the ovary and the uterus approximately every 28 days involving ovulation with the breakdown and loss of the lining of the uterus?

PMC 2020
Biology
Reproduction
Reproduction in Females
Elimination Tool:

Ovulation

Menstrual cycle

Uterine cycle

Embryo formation

100 / 200

The DNA that has been altered and which now contains length of nucleotides from two different organisms is called a:

PMC 2020
Biology
Biotechnology
Genetic Engineering & its tools
Elimination Tool:

Plasmid

Combined DNA

Vector

Recombinant DNA

101 / 200

At what phase the DNA content of a cell is doubled?

PMC 2020
Biology
Cell Cycle
Mitosis
Elimination Tool:

Prophase

Interphase

Anaphase

Telophase

102 / 200

According to the fluid mosaic model of cell membrane, which zone is embedded inside?

PMC 2020
Biology
Biological Molecules
Lipids
Elimination Tool:

Hydrophobic

Hydrophilic

Globular

Filamentous

103 / 200

It is a method for rapid production of a very large number of copies of a particular fragment of DNA:

PMC 2020
Biology
Biotechnology
Genetic Engineering & its tools
Elimination Tool:

A) Gel electrophoresis

B) Polymerase chain reaction

C) DNA extraction

D) Recombination

104 / 200

Which of the following is not necessary for PCR to occur?

PMC 2020
Biology
Biotechnology
Genetic Engineering & its tools
Elimination Tool:

A) dATP

B) Primers

C) DNA fragments

D) Ribonucleotides

105 / 200

Which statement correctly describes the transcription of DNA?

PMC 2020
Biology
Chromosomes and DNA
Elimination Tool:

A) It produces amino acids

B) It produces messenger RNA

C) It results in increased DNA synthesis

D) It is a semi conservative process

106 / 200

What is the effect of enzyme DNA ligase?

PMC 2020
Biology
Chromosomes and DNA
The Chemical Nature of DNA
Elimination Tool:

A) DNA is broken up at specific sites

B) DNA fragments are joined together

C) DNA replication occurs

D) DNA transcription occurs

107 / 200

In electron transport chain, ATP synthesis takes place when electrons move from:

PMC 2020
Biology
Bioenergetics
Light Dependent Mechanism of Photosynthesis
Elimination Tool:

A) Primary Electron Acceptor (PEA) to Plastoquinone (Pq)

B) Plastoquinone (Pq) to cytochromes

C) Cytochrome to Plastocyanin (Pc)

D) Plastocyanin (Pc) to Photosystem I (PS I)

108 / 200

This theory says that “mitochondria and chloroplasts are, in effect, ancient bacteria which now live inside the larger cells”:

PMC 2020
Biology
Evolution
Elimination Tool:

A) Darwin’s theory of evolution

Lamarckism

C) Neo – darwinism

D) Endosymbiont theory

109 / 200

Most enzymes have an optimum temperature of around:

PMC 2020
Biology
Enzymes
Elimination Tool:

A) 30 C

B) 40 C

C) 50 C

D) 20 C

110 / 200

______ alleles both have an effect on the phenotype of a heterozygous organism:

PMC 2020
Biology
Variation and Genetics
Exceptions To Mendelian Inheritance
Elimination Tool:

Dominant

Recessive

Co-dominant

Multiple

111 / 200

Which of the following is not related to the enveloped virus?

PMC 2020
Biology
Bio-diversity | Variety of Life
Elimination Tool:

A) They survive for a long time

B) Their envelope is not sensitive to sunlight

C) They are tolerant to antibodies

D) Envelope is derived from host

112 / 200

Lock and Key Model for enzyme action propose by Emil Fischer suggests that:

PMC 2020
Biology
Enzymes
Elimination Tool:

Enzymes are unbiased for the substrate

Enzymes can modify their active sites

Enzymes are restricted to one reaction type

D) An enzyme can catalyze variety of reactions

113 / 200

In humans, the temperature regulation control center is located in:

PMC 2020
Biology
Homeostasis
Thermoregulation
Elimination Tool:

Kidneys

Brain

Lungs

Liver

114 / 200

Transgenic organisms:

PMC 2020
Biology
Biotechnology
Genetic Engineering & its tools
Elimination Tool:

A) Have a foreign gene inserted into them

B) Have an important role in the large scale production of medicinal products

C) Are considered beneficial to humans

D) All of the above

115 / 200

As an excretory organ, liver:

PMC 2020
Biology
Homeostasis
Excretion in Animals
Elimination Tool:

Detoxifies many chemical poisons

Breaks down ammonia for excretion by the kidneys

Produces urea and uric acids from the nitrogen of amino acids

All of the above

116 / 200

Mono-saccharides have a general formula represented by:

PMC 2020
Biology
Biological Molecules
Carbohydrates
Elimination Tool:

(CH2O)n

C(H2O)n

C2(H2O)n

117 / 200

Which one of the following are “myogenic” type of muscles?

PMC 2020
Biology
Support and Movement
Types of Muscles
Elimination Tool:

Glandular muscles

Cardiac muscles

Skeletal muscles

Smooth muscles

118 / 200

Phenotype is:

PMC 2020
Biology
Chromosomes and DNA
Genetics
Elimination Tool:

A) The genetic component i.e. the genes in an individual for a particular trait

B) Partner of gene pair

C) The form of appearance of a trait

D) The position of a gene on the chromosome

119 / 200

A _____ is a junction between two neurons or between a motor neuron and a muscle cell:

PMC 2020
Biology
Coordination and Control
Steps Involved in Nervous Coordination
Elimination Tool:

Impulse

Synapse

Axon

Cleft

120 / 200

Transcription is the process in which an RNA copy of the DNA sequence and coding the gene is produced with the help of an enzyme called:

PMC 2020
Biology
Chromosomes and DNA
Translation
Elimination Tool:

A) DNA polymerase

B) RNA polymerase

C) DNA transcriptase

D) RNA transcriptase

121 / 200

The active uptake of sodium in the ascending limb or thick loop of Henle is promoted by the action of:

PMC 2020
Biology
Homeostasis
Structure and Importance of the Kidney
Elimination Tool:

Aldosterone

Thyroxine

ADH

Cortisone

122 / 200

The end product in anaerobic respiration is:

PMC 2020
Biology
Bioenergetics
Anaerobic Respiration
Elimination Tool:

A) Ethanol and Carbon dioxide

B) Lactate

C) Pyruvate

D) Both A and B

123 / 200

In roots, the apoplast pathway of water is disrupted when water reaches:

PMC 2020
Biology
Transport
Elimination Tool:

A) Plasmodesmata

B) Endodermis

C) Cortex

D) Pith

124 / 200

Red algae do not contribute towards:

PMC 2020
Biology
Kingdom Protista
Elimination Tool:

A) Making coral reefs

B) Forming limestone deposits

C) Making fertilizers

D) Forming chalk deposits

125 / 200

Which property of water helps to maintain the integrity of lipid-containing membranes?

PMC 2020
Biology
Cell Structure and Function
Plasma Membrane
Elimination Tool:

Specific Heat Capacity

Hydrogen Bonding

Cohesion and Adhesion

Hydrophobic exclusion

126 / 200

Which of the following is a copper containing protein in electron transport chain?

PMC 2020
Biology
Bioenergetics
Elimination Tool:

Plastoquinone

B) Cytochrome – C

C) Plastocyanin

Ferredoxin

127 / 200

Which of the following is the components / tools of recombinant DNA technology?

PMC 2020
Biology
Biotechnology
Elimination Tool:

A) Gene of interest

B) Molecular scissors

C) Molecular glue and expression system

D) All of the above

128 / 200

Which of the following is an unsaturated fatty acid?

PMC 2020
Biology
Biological Molecules
Lipids
Elimination Tool:

Oleic acid

Palmitic acid

Butyric acid

Acetic acid

129 / 200

Antibodies are manufactured in:

PMC 2020
Biology
Transport
Elimination Tool:

A) T Lymphocytes

B) Red Blood Cells

C) Platelets

D) B Lymphocytes

130 / 200

Which of the following hormones of the pituitary gland regulates the menstrual cycle?

PMC 2020
Biology
Reproduction
Reproduction in Females
Elimination Tool:

Follicle Stimulating hormone and Estrogen

Luteinizing hormone and Estrogen

Follicle Stimulating hormone and Luteinizing hormone

Estrogen and Progesterone

131 / 200

Water acts as a universal solvent because of:

PMC 2020
Biology
Biological Molecules
Water
Elimination Tool:

Heat of vaporization

Hydrogen bonding

High polarity

Cohesion and adhesion

132 / 200

The cells in our body are all genetically identical, apart from the:

PMC 2020
Biology
Growth and Development
Growth and Development in Animals
Elimination Tool:

A) Somatic cells

B) Reproductive cells

C) Muscle fibers

D) White blood cells

133 / 200

Which of the following is TRUE about the structure of a typical bacterium?

PMC 2020
Biology
Kingdom Prokaryote
Size and Structure of Bacteria
Elimination Tool:

A) It has cell wall

B) It has cytoplasm

C) It has genetic material

D) All of the above

134 / 200

Which of the following processes does NOT need Pyruvic Acid as a substrate?

PMC 2020
Biology
Bioenergetics
Light Independent Mechanism of Photosynthesis
Elimination Tool:

A) Alcoholic fermentation

B) Calvin cycle

C) Aerobic respiration

D) Lactic Acid fermentation

135 / 200

Which of the following neurotransmitters function, both as neurotransmitter and hormones, decreasing our perception of pain?

PMC 2020
Biology
Coordination and Control
Endocrine System and its Hormones
Elimination Tool:

Epinephrine

Serotonin

Dopamine

Endorphins

136 / 200

70S sized ribosomes are found in the cytoplasm of:

PMC 2020
Biology
Cell Structure and Function
Prokaryotic and Eukaryotic Cells
Elimination Tool:

Algae

Fungi

Protozoans

Bacteria

137 / 200

Neurons are cells adapted for the rapid transmission of electrical impulses. To do this, they have long thin processes called:

PMC 2020
Biology
Coordination and Control
Steps Involved in Nervous Coordination
Elimination Tool:

Axons

Dendrites

Myelin sheath

Schwann cell

138 / 200

First stable compound during Calvin cycle is:

PMC 2020
Biology
Bioenergetics
Light Independent Mechanism of Photosynthesis
Elimination Tool:

A) 3-phosphoglycerate

B) Glyceraldehyde 3 – phosphate

C) 1, 3 bisphosphoglycerate

D) Ribulose bisphosphate

139 / 200

In human heart, the left atrium receives:

PMC 2020
Biology
Transport
Elimination Tool:

A) The superior vena cava

B) The inferior vena cava

C) The coronary sinus

D) The four pulmonary veins

140 / 200

When the temperature of the surrounding environment rises, body responds by:

PMC 2020
Biology
Homeostasis
Thermoregulation
Elimination Tool:

A) Vasoconstriction

B) Vasodilation

C) Shivering

D) Raising body hairs

141 / 200

Which of the following diseases is sexually transmitted?

PMC 2020
Biology
Bio-diversity | Variety of Life
Elimination Tool:

Tuberculosis

AIDS

Dengue Fever

Cholera

142 / 200

NAD is an example of:

PMC 2020
Biology
Biological Molecules
Nucleic Acids
Elimination Tool:

Mononucleotide

Dinucleotide

Trinucleotide

Tetranucleotide

143 / 200

Haemophilia occurs because of:

PMC 2020
Biology
Variation and Genetics
Inherited Diseases
Elimination Tool:

Mutation in an autosome

Mutation of Y-chromosome

Mutation of X-chromosome

Deficiency of iron

144 / 200

The only vein in human carrying oxygenated blood is:

PMC 2020
Biology
Transport
Elimination Tool:

A) Femoral

B) Pulmonary

C) Real

D) Iliac

145 / 200

Which one of the following is common to all neurons?

PMC 2020
Biology
Coordination and Control
Coordination in Animals
Elimination Tool:

A cell body which contains a nucleus

A thick myelin sheath

Presence of node of Ranvier

Presence of Schwann cells

146 / 200

Which of the following cell organelles involved in the synthesis of cell wall and middle lamella?

PMC 2020
Biology
Cell Structure and Function
Cytoplasm and Organelles
Elimination Tool:

Endoplasmic reticulum

Golgi apparatus

Lysosomes

Peroxisomes

147 / 200

Suggest which among the following is not a function attributed to endoplasmic reticulum?

PMC 2020
Biology
Cell Structure and Function
Cytoplasm and Organelles
Elimination Tool:

Detoxification of poisons and drugs

Digestion/egestion of foreign materials outside the cell

Manufacture of fat and lipid molecules

Biogenesis of membrane proteins

148 / 200

Which of the following is NOT TRUE about Human Immunodeficiency virus (HIV)?

PMC 2020
Biology
Bio-diversity | Variety of Life
Elimination Tool:

A) It is a retrovirus

B) It is surrounded by an envelope

C) It does not cause AIDS

D) It causes deficiency of the human immune system

149 / 200

Regarding structure of the human heart, Chordae Tendinae are present in:

PMC 2020
Biology
Transport
Elimination Tool:

A) Atria

B) Pulmonary valve

C) Ventricles

D) Aortic valve

150 / 200

Which one of the following muscles are considered as “Voluntary muscles”?

PMC 2020
Biology
Support and Movement
Types of Muscles
Elimination Tool:

Smooth muscles

Cardiac muscles

Skeletal muscles

Glandular muscles

151 / 200

The complete, mature and infection virus particle is known as:

PMC 2020
Biology
Bio-diversity | Variety of Life
Elimination Tool:

A) Venome

B) Genome

C) Virion

D) Capsid

152 / 200

Lipids store double the amount of energy as compared to carbohydrates because of:

PMC 2020
Biology
Biological Molecules
Lipids
Elimination Tool:

High proportion of oxygen

High C-O ratio

Low proportion of Carbon

High proportion of C-H

153 / 200

In which type of cells, cell wall is not present?

PMC 2020
Biology
Cell Structure and Function
Cell Wall
Elimination Tool:

Plant cells

Fungal cells

Bacterial cells

Liver cells

154 / 200

Select a method which causes the oxidation of chemical constituent of a bacterial cell:

PMC 2020
Biology
Kingdom Prokaryote
Importance and Control of bacteria
Elimination Tool:

A) Steam

B) Dry heat

C) Filtration

D) Radiation

155 / 200

The cells which play a very important role in developing immunity are:

PMC 2020
Biology
Transport
Elimination Tool:

A) Monocytes

B) Neutrophils

C) Lymphocytes

D) Thrombocytes

156 / 200

Which of the following is TRUE about Amoebae?

PMC 2020
Biology
Kingdom Protista
Diversity and major groups of protista
Elimination Tool:

A) They have flagella

B) They are multicellular

C) They do not cause any disease in humans

D) They move by forming specialized cytoplasmic projections called pseudopodia

157 / 200

When both the alleles of a gene pair are same, the organism is said to be:

PMC 2020
Biology
Variation and Genetics
Mendelian Inheritance
Elimination Tool:

Heterozygous

Genotype

Homozygous

Phenotype

158 / 200

Autoimmune diseases act as the principle of:

PMC 2020
Biology
Transport
Elimination Tool:

A) Self against antigens

B) Antigen against self

C) Self against self

D) Antigen self destroyed

159 / 200

Select an anamniote from the following:

PMC 2020
Biology
Kingdom Animalia
Phylums – porifera to chordata
Elimination Tool:

A) Snake

B) Parrot

C) Frog

D) Crocodile

160 / 200

Secondary alkyl Halide is:

PMC 2020
Chemistry
Alkyl Halides and Amines
Elimination Tool:

Option A

Option B

Option C

Option D

161 / 200

Which one of the following properties is not exhibited by the longitudinal waves?

PMC 2020
Physics
Wave Motion and Sound
Elimination Tool:

A) Interference

Reflection

Diffraction

Polarization

162 / 200

Which of the following series lies in the ultraviolet range:

PMC 2020
Physics
Optics, Nature of Light and Optical Instruments
Elimination Tool:

A) Balmer series

B) Pashcher series

C) Lyman series

D) Brackett series

163 / 200

If during circular motion, tangential velocity of a body becomes double, then centripetal force becomes:

PMC 2020
Physics
Circular Motion and Momentum
Elimination Tool:

A) Double

B) One half

C) Four times

D) One fourth

164 / 200

The slope of distance – time graph will always be:

PMC 2020
Physics
Motion in Two Dimensions
Elimination Tool:

Negative

Positive

Zero

Maximum

165 / 200

At what angle of projection of a projectile the range becomes half of its maximum value?

PMC 2020
Physics
Motion in Two Dimensions
Elimination Tool:

A) 15

B) 20

C) 30

D) 40

166 / 200

The main difference between X rays and Y rays is:

PMC 2020
Physics
Optics, Nature of Light and Optical Instruments
Elimination Tool:

A) Frequency

B) Wave length

C) Energy

D) Origin

167 / 200

Astronomers calculate speed of distant stars and galaxies using which of the following phenomena:

PMC 2020
Physics
Wave Motion and Sound
Elimination Tool:

A) Beats

B) Interference

C) Superposition principle

D) Doppler effect

168 / 200

If we drop an object, it’s initial velocity is zero. How far will it fall in time ‘t’?

PMC 2020
Physics
Motion in Two Dimensions
Elimination Tool:

A) 9.8 t2

B) 4.9 t2

C) 0.49 t2

D) 98 t2

169 / 200

When a wire is compressed and it’s radius becomes 2R then it’s resistance will be:

PMC 2020
Physics
Current Electricity
Ohms Law
Elimination Tool:

A) 16R

B) 4 R

C) 1 / 16 R

D) 1 / 4 R

170 / 200

The earth rotates on its axis once a day. Suppose, by some process the earth contracts so that it’s radius is only half as large as at present, then how long the earth will take to complete it’s rotation?

PMC 2020
Physics
Circular Motion and Momentum
Elimination Tool:

A) 24 hours

B) 18 hours

C) 6 hours

D) 12 hours

171 / 200

In which process the entire heat supplied to the gas is converted to the internal energy of the gas?

PMC 2020
Physics
Heat and Thermodynamics
First Law of Thermodynamics
Elimination Tool:

A) Isochoric process

B) Isobaric process

C) Isothermal process

D) Adiabatic process

172 / 200

Transformer is a device which steps up or steps down the input:

PMC 2020
Physics
Magnetism and Electromagnetic Induction
Transformers
Elimination Tool:

A) Current

B) Voltage

C) Energy

D) Power

173 / 200

The wavelength associated with an electron is of the order of:

PMC 2020
Physics
Wave Motion and Sound
Elimination Tool:

A) Visible light

B) X rays

C) Radio waves

D) Infrared

174 / 200

Under what condition an object will have zero displacement but non zero distance?

PMC 2020
Physics
Circular Motion and Momentum
Elimination Tool:

A) Linear motion

B) Circular motion

C) Random motion

D) Oscillation

175 / 200

The domestic electricity supply has a frequency of:

PMC 2020
Physics
Current Electricity
Electric Current
Elimination Tool:

A) 150 Hz

B) 100 Hz

C) 50 Hz

D) 25 Hz

176 / 200

If the potential at a point which is 1m from a charge is 1 volt, then the potential at a point which is 2m from the same charge will be:

PMC 2020
Physics
Electrostatics
Elimination Tool:

A) 2 V

B) 1 V

C) 0.5 V

D) 3 V

177 / 200

In a full-wave rectification, the number of diodes used are:

PMC 2020
Physics
Alternating Current
Alternating Voltage and Current
Elimination Tool:

A) 1

B) 2

C) 3

D) 4

178 / 200

1 radian is equal to:

PMC 2020
Physics
Circular Motion and Momentum
Elimination Tool:

A) 57.1 degrees

B) 57.2 degrees

C) 57.3 degrees

D) 57.4 degrees

179 / 200

If a stationary bar magnet is placed near a coil so that maximum lines of force passes through the coil, the galvanometer shows:

PMC 2020
Physics
Magnetism and Electromagnetic Induction
Galvanometer
Elimination Tool:

A) Maximum current

B) Minimum current

C) No current

D) Intermediate value of current

180 / 200

What is the speed of 2.0 kg metallic bob at the mean position of a simple pendulum, when released from its extreme position 0.5m high? (g = 10 ms-2)

PMC 2020
Physics
Work, Power and Energy
Elimination Tool:

A) 3.16 ms-1

B) 10 ms-1

C) 100 ms-1

D) 50 ms -1

181 / 200

Magnetic flux is maximum when angle between magnetic field and vector area is:

PMC 2020
Physics
Magnetism and Electromagnetic Induction
Magnetic Flux and Flux Density
Elimination Tool:

A) 0

B) 90

C) 180

D) 45

182 / 200

The internal energy of a system during an isothermal process:

PMC 2020
Physics
Heat and Thermodynamics
Elimination Tool:

A) Decreases

B) Increases

C) Become zero

D) Remain constant

183 / 200

Two parallel straight conductors, in which current is flowing in the same direction, attract each other. The cause of it is:

PMC 2020
Physics
Magnetism and Electromagnetic Induction
Magnetic Field Due to Current in a Long Straight Wire
Elimination Tool:

A) magnetic force between the two

B) electric force between the two

C) potential difference between the two

D) mutual induction between the two

184 / 200

The values of electric intensity will ____ due to the presence of dielectric medium:

PMC 2020
Physics
Electrostatics
Elimination Tool:

A) Increase
B) Increase exponentially
C) Decrease
D) Remain same

A) Increase

B) Increase exponentially

C) Decrease

D) Remain same

185 / 200

In a ripple tank, 40 waves pass through a certain point in 1 second. If the wavelength of the wave is 5 cm, then speed of the wave is:

PMC 2020
Physics
Wave Motion and Sound
Elimination Tool:

A) 0.5 ms-1

B) 1 ms-1

C) 1.5 ms-1

D) 2 ms-1

186 / 200

When the speed of your car is halved, by what factor does its kinetic energy decreases?

PMC 2020
Physics
Work, Power and Energy
Elimination Tool:

A) ½

B) ¼

C) ⅛

D) ⅙

187 / 200

While using radiation therapy, cancerous thyroid is treated with ____ radioisotope:

PMC 2020
Physics
Nuclear Physics
Biological Effects and Uses of Radiation
Elimination Tool:

A) Carbon

B) 235 Uranium

C) Thorium

D) Iodine

188 / 200

In what form is the energy stored in a charged capacitor?

PMC 2020
Physics
Electrostatics
Elimination Tool:

A) gravitational

B) electrical potential

C) magnetic field

D) potential

189 / 200

A 1.75 m tall weight-lifter raises a weight of mass 50 kg to a height of 0.5 m above its head. How much work is being done by it? (g = 10 ms-2)

PMC 2020
Physics
Work, Power and Energy
Elimination Tool:

A) 2125 J
B) 2500 J
C) 50 J
D) 1125 J

A) 2125 J

B) 2500 J

C) 50 J

D) 1125 J

190 / 200

One kilowatt-hour is commonly termed as one commercial unit of electric energy which is equal to:

PMC 2020
Physics
Current Electricity
Electomotive Force and Potential Difference
Elimination Tool:

A) 3.6 x 105 J

B) 3.6 x 106 J

C) 3.6 x 104 J

D) 3.6 x 103 J

191 / 200

Which photon carries the most energy?

PMC 2020
Physics
Optics, Nature of Light and Optical Instruments
Elimination Tool:

A) Blue

B) Violet

C) Red

D) Green

192 / 200

PIV stands for :

PMC 2020
Physics
Alternating Current
Elimination Tool:

A) Positive inverse voltage

B) Pawn Bh Integrated voltage

C) Peak inverse voltage

D) Peak integrated voltage

193 / 200

The newton-second is the unit of:

PMC 2020
Physics
Circular Motion and Momentum
Elimination Tool:

A) Work
B) Power
C) Impulse
D) Momentum

A) Work

B) Power

C) Impulse

D) Momentum

194 / 200

Ohm multiplied by farad is equivalent to:

PMC 2020
Physics
Electrostatics
Elimination Tool:

A) Time

B) Charge

C) Distance

D) Capacitor

195 / 200

Which one of the following force is non-conservative:

PMC 2020
Physics
Forces and Motion
Elimination Tool:

A) Frictional force

B) Gravitational force

C) Electric force

D) Elastic spring force

196 / 200

The speed of sound in air is 332 m/s. The speed of sound at 22 degrees centigrade will be:

PMC 2020
Physics
Wave Motion and Sound
Elimination Tool:

A) 345.2 m/s

B) 340 m/s

C) 350 m/s

D) 330 m/s

197 / 200

In transmission from grid station, power losses are minimized by:

PMC 2020
Physics
Magnetism and Electromagnetic Induction
Transformers
Elimination Tool:

A) Increasing current

B) Decreasing current

C) Increasing resistance

D) Increasing voltage

198 / 200

There are initially 400 atoms in a radioactive sample. What would be the number of atoms after 3 half – life?

PMC 2020
Physics
Nuclear Physics
Elimination Tool:

A) 400

B) 200

C) 50

D) 25

199 / 200

One of the following is an Ohmic device:

PMC 2020
Physics
Current Electricity
Ohms Law
Elimination Tool:

A) Filament bulb

B) Semiconductor diode

C) Transistor

D) Copper wire

200 / 200

The change in resistance of metallic conductor at temperature below 0 degrees is:

PMC 2020
Physics
Current Electricity
Ohms Law
Elimination Tool:

A) Non-linear

B) Curve

C) Linear

D) Curvilinear

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