Previous Year Questions

QUESTION ID:2

Which among the following belongs to the family “Retroviridae”?

QUESTION ID:3

Which of the following is a glycolipid? 

QUESTION ID:4

Which of the following bacterial component contains “dipicolinic acid”? 

QUESTION ID:5

The fossilization process in which mineral rich water penetrates through the pores of decomposed organic matter is known as _____. 

QUESTION ID:6

A random fluctuation in gene frequency is called

QUESTION ID:7

The number of “Barr Bodies” present in a somatic cell of a woman suffering from Turner syndrome is ____. 

QUESTION ID:8

Which of the following are produced by Mangrove trees to survive in the waterlogged swampy forests? 

QUESTION ID:9

Indeterminate growth in plants is due to the presence of perpetually undifferentiated tissues, called as ______. 

QUESTION ID:10

The osmotic potential (ψ) of pure water is _____ MPa.

QUESTION ID:11

Bacteria containing a tuft of flagella that comes out from one pole is called ___. 

QUESTION ID:12

Which of the following activity is associated with Klenow fragment? 

QUESTION ID:13

A frameshift mutation is caused by ____. 

QUESTION ID:14

The zone of a pond system where respiration is more than production is called as _____. 

QUESTION ID:15

An organism that causes obstruction of lymphatic system in humans is ____. 

QUESTION ID:16

A man having a dominant genetic trait (TT genotype) can taste phenylthiocarbamide (PTC), marries a woman who cannot taste PTC. The PTC tasting ability of their biological son and daughter is 

QUESTION ID:17

Which of the following enzymes is absent in a person suffering from Alkaptonuria? 

QUESTION ID:18

The bacterium that can tolerate high concentrations of salt and also ferment mannitol is 

QUESTION ID:19

Match the following

QUESTION ID:20

The major product formed in the given reaction is

QUESTION ID:21

DNA gyrase can 

QUESTION ID:22

The stationary phase of cation-exchange chromatography can be 

QUESTION ID:23

Components of a Transmission Electron Microscope are 

QUESTION ID:24

In a honey bee population, the workers are infertile but protect the queen from intruders and help in reproduction. This is an example of 

QUESTION ID:25

For an enzyme following Michaelis-Menten kinetics, when [S]=K_M then, the velocity v is ([S] is substrate concentration, K_M is Michaelis constant, V_max is maximal velocity)

QUESTION ID:26

The net equation for aerobic glycolysis is. (DROP)

QUESTION ID:27

In the electron transport chain, flavin mononucleotide (FMN) can adopt ______ as the highest oxidation state and is capable of accepting or donating _____ electrons, respectively. 

QUESTION ID:28

In bacteria, the σ factor that plays a major role in transcription during the stationary phase is. (DROP)

QUESTION ID:29

A rise in cytosolic calcium ion concentration just after fertilization in a sea urchin egg leads to

QUESTION ID:30

In a nephron, _____ follows the ascending limb of the “loop of Henle”. 

QUESTION ID:31

Transpirational pull that extends down to the roots in plants can be interrupted by 

QUESTION ID:32

Transfer of plasmids into animal cells can be achieved by 

QUESTION ID:33

Archaeal cell membranes contain lipids that are 

QUESTION ID:34

Which of the following are producers in an ecological system? 

QUESTION ID:35

Which of the following acts as wound hormones in plants?

QUESTION ID:36

The enriched media used to facilitate the growth of fastidious microorganisms are 

QUESTION ID:37

Match the bacterial structure to function

QUESTION ID:38

Identify the correct pairs:

QUESTION ID:39

A single copy of an allele in sickle-cell heterozygous individuals reduces the frequency and severity of malaria. The reason for this is

QUESTION ID:40

The correct statement/s for bimolecular nucleophilic substitution reactions is/are 

QUESTION ID:41

A deck of ten cards is given to you as shown below in the figure. One card is drawn at random from this deck. The probability of selecting a number less than 9 is ____. (to one decimal place)

QUESTION ID:42

The average of all positive even integers less than or equal to 40 is ___. 

QUESTION ID:43

The smallest positive (non-zero) integer “n” for which the expression  holds true, is ___.

QUESTION ID:44

Given that

 the value of A is 

QUESTION ID:45

An object is placed at the principal focus of a concave lens of focal length 10 cm. The image will be formed at _____cm, between the optical center and the focus of the lens on the same side of the object. 

QUESTION ID:46

What is the maximum number of hydrogen bonds that a water molecule can make in the liquid state? 

QUESTION ID:47

How many pairs of autosomal chromosomes are there in normal humans?

QUESTION ID:48

Calculate the temperature (in K) at which the resistance of a metal becomes 20% more than its resistance at 300 K. The value of the temperature coefficient of resistance for this metal is 2.0 × 10^-4 /K. 

QUESTION ID:49

In the ¹H NMR spectrum of ethanol at 400 MHz, the methyl group splits into _________ number of peaks. 

QUESTION ID:50

In a denaturing polyacrylamide gel electrophoresis experiment, pure intact adult human hemoglobin will yield ________(number) bands

QUESTION ID:51

A man throws a ball vertically up in the air with an initial velocity v₁ such that it reaches a height of 12 m with a speed of 12 m/s. If he throws the same ball vertically up with an initial velocity v₂ such that it reaches a maximum height of 12 m. Calculate v₁/ v₂. (up to 2 decimal places)

QUESTION ID:52

What is the acceleration due to gravity (m/s ² ) on the surface of a planet if its radius is 1/4^th that of earth and its mass is 1/80^th that of earth? Assume that the gravity on the surface of the earth is 10 m/s² . 

QUESTION ID:53

In a randomly mating population, the frequency of ‘A’ allele is 0.7. What is the frequency of ‘Aa’ genotype in the next generation according to Hardy Weinberg’s law? (up to two decimal places)

QUESTION ID:54

The potential difference to accelerate an electron was quadrupled. By what factor does the de Broglie wavelength of the electron beam change? 

QUESTION ID:55

A 500 nm light is used for imaging in a confocal microscope. What will be the best resolution (in nm) of this microscope?

QUESTION ID:56

Assuming the molecule shown below is aromatic, the value of “n” according to “Hückel’s rule” is

QUESTION ID:57

In an actively growing population from a single bacterium, 1,048,576 cells are present after 20^th generation. How many cells were there in 5^th generation?

QUESTION ID:58

A double stranded DNA molecule of total 5000 base pairs long, has a melting temperature of 85 °C. What will be the % AT base pairs in this sample? (up to one decimal place). 

QUESTION ID:59

How many GTP molecules are required for the translocation of tRNA from P site to E site during translation elongation process in bacteria?

QUESTION ID:60

Amongst the molecules given below, the total number of molecules that have at least one sp² hybridized atom is __________. 

C₆H₆, NO₂, BF₃, H₂O₂, SO₂, C₂H₂, L-Tryptophan