Previous Year Questions

QUESTION ID:2

Mangoes can be ripened quickly by using: 

QUESTION ID:3

Which colour of insulation covering is there on the earth wire that goes from the main switchboard to our rooms? 

QUESTION ID:4

A relationship between two biological organisms, where one organism benefits while the other remains unaffected, is termed: 

QUESTION ID:5

Ethanol as a viable bio-fuel can be obtained from: 

QUESTION ID:6

Activated charcoal can be used to remove colouring matter from pure substances by: 

QUESTION ID:7

Which of the following is correct regarding the explanation of blue colour of the sky? 

QUESTION ID:8

Which of the following metals is an important constituent of the water purification agent zeolite? 

QUESTION ID:9

Which of the muscles in our body has a name that relates it to tailoring? 

QUESTION ID:10

What colour is the best to wear to stay cool on a hot and sunny day? 

QUESTION ID:11

A herpetologist would be studying which of the following? 

QUESTION ID:12

Which of the following metals is commonly used to increase the strength of steel alloys? 

QUESTION ID:13

Leather is prepared from which portion(s) of the skin? 

QUESTION ID:14

Humans have the ability to detect and discriminate at least 10,000 different odorants because we have one of the most evolved ____ system. 

QUESTION ID:15

The pH of gastric acid (HCl) in the human stomach lumen can be as low as 1.5. Still, normally, it does not corrode the gastric mucosa because: 

QUESTION ID:16

Mucosa secretes protective mucus that lines the surface

QUESTION ID:17

A key tool used for determining the age of prehistoric samples is: 

QUESTION ID:18

The Nobel Prize in Medicine is actually named as Nobel Prize in: 

QUESTION ID:19

Which of the following is an egg laying mammal? 

QUESTION ID:20

The full form of RT-PCR is: 

QUESTION ID:21

Which among the following radiofrequencies is most commonly used in global air navigational systems? 

QUESTION ID:22

Which part of the earth is suitable to witness the natural phenomena of dynamic light displays called ‘aurora’? 

QUESTION ID:23

A mixture of oxygen with this gas reduces oxygen density and can be used in hospitals? 

QUESTION ID:24

Which of the following provided the major clue that led to the recognition of the double helical structure of DNA? 

QUESTION ID:25

Alfred Nobel, the founder of Nobel prizes was once called the ‘merchant of death’ for which of the following inventions? 

QUESTION ID:26

Which of the following is the primary reason for the tremendous energy generated from the Sun and the other stars? 

QUESTION ID:27

Which of the following is not a component of oral rehydration solution? 

QUESTION ID:28

Most abundant organic polymer on earth is: 

QUESTION ID:29

Which of the following salts is soluble in water at pH 7.0? 

QUESTION ID:30

Which of the following microbe helps termites digest Cellulose? 

QUESTION ID:31

The Xanthophyte (Yellow Green Algae) cell walls are typically made up of: 

QUESTION ID:32

Spectacles used for viewing 3D films have: 

QUESTION ID:33

Acrylamide is a substance that forms through a natural chemical reaction between sugars and asparagine in plant-based foods during high-temperature cooking, such as frying, roasting, and baking. It is important to know about this chemical because: 

QUESTION ID:34

A diverse mixture of sound waves extending over a wide frequency range or a constant background noise especially one that drowns out other sounds is called: 

QUESTION ID:35

It is well-known that plants can survive for short periods without light. This process of adaptation is termed: 

QUESTION ID:36

Pigeons sitting on electric wires is a common site as shown below:

What is the reason that they do not get electrocuted even though these are high voltage wires? 

QUESTION ID:37

A student asks his science teacher whether he can catch fire if he runs very fast. The teacher replies that scientists have shown that one needs to run at speeds of about 6000 km/hour for this. What is the major reason for generation of heat if one runs at high speeds? 

QUESTION ID:38

A caricature is shown below with three-headed dog and a symbol. This shows dangers of which of the following?

QUESTION ID:39

We know that we are made of particles. But when the universe began, no particles had mass; they all sped around at the speed of light. It is believed that stars, planets and life could only emerge because particles gained their mass from a fundamental mass-giving field. The existence of this field was confirmed with the discovery of: 

QUESTION ID:40

There is a legend that the when the inventor of chess showed it to the ruler, the latter was so pleased that he asked the inventor to ask for any prize. The inventor is supposed to have asked that he may be given one grain for the first square, two for the second, four for the third, and so on; doubling the number of grains for each subsequent square. According to the legend, the ruler laughed at it saying it is such a small prize. But when the treasurers started to calculate, they found that this would require such huge number of wheat grains which they do not have. This legend illustrates: 

QUESTION ID:41

If a child “x” is said to be having weight above 70th percentile. What does it mean? 

QUESTION ID:42

The mean of 20 observations is 6.21. Later on, it was discovered that the two items +5 and +3 were taken as -5 and -3. Find the correct mean. 

QUESTION ID:43

The statistical term to represent the most frequently selling commodity of a shop? 

QUESTION ID:44

Which one of the following is unaffected by outliers? 

QUESTION ID:45

One study intended to compare 12-hour nursing shifts to 8-hour shifts to assess the effects on patient outcomes in the different wards of a hospital. The most suitable design would be: 

QUESTION ID:46

Modification of behaviour by study participants in response to their knowledge that they are being observed is known as: 

QUESTION ID:47

In a study, 5000 patients are randomly divided into two groups, one is administered 100 mg of a drug, the other gets placebo. The study endpoint is comparison of the incidence of stroke among the two groups at the end of 5 years. The statistical test most appropriate would be: 

QUESTION ID:48

Which of following guidelines should be followed while reporting the results from a randomized clinical trial? 

QUESTION ID:49

Which of the following example represents nominal data in statistics? 

QUESTION ID:50

The players of a football team (excluding substitutes) were advised to stand as per the ascending order of their height. The median height of the football team would be? 

QUESTION ID:51

All of the following are examples of gram-negative bacilli, EXCEPT: 

QUESTION ID:52

Which of the following is not an acid-fast parasite? 

QUESTION ID:53

All of the following are RNA viruses, EXCEPT: 

QUESTION ID:54

Cetrimide agar is used as selective medium for: 

QUESTION ID:55

Enterobius vermicularis is commonly known as: 

QUESTION ID:56

An organism whose genome has been altered by the introduction of one or more foreign DNA sequences from another species by artificial means is known as: 

QUESTION ID:57

Excretion of drugs in the urine involves three distinct processes: glomerular filtration, active tubular secretion, and: 

QUESTION ID:58

Pharmacological agents targeting dopamine receptors are used in the treatment of which of the following? 

QUESTION ID:59

If a hypertensive patient complains of pedal oedema, he could likely be on: 

QUESTION ID:60

Which of the following is an antimalarial drug? 

QUESTION ID:61

For converting mg/ml into molar units for a drug, you need to know: 

QUESTION ID:62

Which lobe of the brain is responsible for receiving and interpretating visual information? 

QUESTION ID:63

Glycated haemoglobin (HbA1C) reflects average plasma glucose over the previous: 

QUESTION ID:64

The hormone erythropoietin stimulates red blood cell production in the red bone marrow. Where in the body is erythropoietin produced? 

QUESTION ID:65

Which of the following blood vessels offer the greatest resistance to blood flow through the arterial system? 

QUESTION ID:66

If the genetic code consisted of four bases per codon instead of three bases per codon, then what will be the possible number of codons that code for 20 types of amino acids (Given the stop codons are same)? 

QUESTION ID:67

Acid guanidinium thiocyanate-phenol-chloroform extraction (AGPC) is an extraction method is used for isolation of: 

QUESTION ID:68

RPMI 1640 growth medium used for cell culture contains all of the following, EXCEPT: 

QUESTION ID:69

Which of the following is the most probable explanation for higher lability of RNA than DNA? 

QUESTION ID:70

Which of the following is NOT a feature of flow cytometry? 

QUESTION ID:71

Statement I: Aspirin and paracetamol belong to the class of non-narcotic analgesics.

Statement II: Aspirin inhibits the synthesis of chemicals known as prostaglandins

which stimulate inflammation in the tissue and cause pain. 

QUESTION ID:72

HbS (Sickle Cell Anaemia) is a result of: 

QUESTION ID:73

RNA interference (RNAi) or Post-Transcriptional Gene Silencing (PTGS) is a conserved biological response to: 

QUESTION ID:74

Databases such as CATH and SCOP are used to identify: 

QUESTION ID:75

What is the function of Chaperonins? 

QUESTION ID:76

A population of insects exists in which black coloration is dominant to white. If there are 64 black insects and 36 white insects in the population, what is the recessive allele frequency? 

QUESTION ID:77

Which of the following choices are likely to change the allele frequencies of the indicated populations?

I. A geographic barrier isolating a small subset of a larger population

II. The introduction of a predator that only preys upon the homozygous dominant members of the population

III. A population that displays completely random mating 

QUESTION ID:78

Which of the following are examples of codominance?

I. A person with blood type AB

II. A flower that displays a red and white spotted phenotype (both colours are attributed to the same gene; homozygosity for either colour makes a flower that is completely red or white)

III. A flower that displays a pink phenotype (a homozygous dominant flower is red and a homozygous recessive flower is white)

IV. An organism whose heterozygous phenotype is identical to the homozygous dominant phenotype 

QUESTION ID:79

Crossing foxes that are double heterozygotes for two genes regulating coat colour yields 27 grey, 12 red and 9 black offspring. What mechanism explains the ratio of coat colour observed in the offspring? 

QUESTION ID:80

What is Orthology in the context of genome comparisons? 

QUESTION ID:81

Mutation in CFTR gene in cystic fibrosis results in the loss of___________ amino acid at the 508th position on protein. 

QUESTION ID:82

Balbiani rings occur in: 

QUESTION ID:83

A human male can ejaculate as many as 500 million spermatozoa at one time. So, how many spermatocytes would be involved in producing this number of spermatozoa? 

QUESTION ID:84

A recessive mutation was discovered in a small island population (1,000 individuals). The mutation was observed in the heterozygous state but never in the homozygous state. What is the possible explanation for this observation? 

QUESTION ID:85

In humans, Down Syndrome is mainly caused due to three copies of chromosome 21. Assuming complete randomness of chromosome segregation, what would be the expected progeny from the mating between a normal male and a Down Syndrome female as the ratio of Down Syndrome and normal children? 

QUESTION ID:86

In the arterial blood gas analysis, an increase in PaCO2 will indicate the presence of: 

QUESTION ID:87

Which of the following structure is responsible for the formation of cerebrospinal fluid? 

QUESTION ID:88

Extrinsic pathway in blood coagulation is triggered by the release of: 

QUESTION ID:89

In an organism, if the normal diploid number of chromosomes is 8, how many chromatids are present in each daughter cell at the end of meiosis I? 

QUESTION ID:90

Which of the following chromosomes is NOT commonly involved in Robertsonian translocation?

QUESTION ID:91

Which cell component is stained by supravital staining in the reticulocytes? 

QUESTION ID:92

Which part of the compound microscope that helps in gathering and focusing light rays on the specimen to be viewed? 

QUESTION ID:93

TAE buffer commonly used for DNA gel electrophoresis contains which of the following? 

QUESTION ID:94

A piece of DNA was analyzed and 15% of its nucleotides were adenine. What percentage would be uracil? 

QUESTION ID:95

Which of the following techniques would be the best to quantify the amount of protein in a sample? 

QUESTION ID:96

Which of the following is a protein modification that can initiate the degradation of the modified protein? 

QUESTION ID:97

If a double strand break (DSB) is not repaired during G1 phase of the cell cycle, what type of replication error would result during S phase at the site of the DSB? 

QUESTION ID:98

What approximate percentage of total RNA content in a cell is messenger RNA (mRNA)? 

QUESTION ID:99

A scientist has been working with a new species of plant. He has found that there are two separate genes, which segregate according to standard Mendelian genetics, that are capable of producing the same phenotype. A single dominant allele from either gene confers red coloration of the plant's flowers. Without any dominant alleles the flowers are white. If he crosses two plants heterozygous for both traits, what will be the resulting phenotypic ratios of the offspring? 

QUESTION ID:100

In spectral karyotyping (SKY), how many sets of FISH probes are utilized? 

QUESTION ID:101

How many genes are present in human mitochondrial genome? 

QUESTION ID:102

Estimation of gamma-glutamyl transferase is useful to detect which one of the following clinical conditions? 

QUESTION ID:103

Which of the following amino acids is present at every third position in collagen molecule? 

QUESTION ID:104

Which component of proteins absorb UV light at 280 nm? 

QUESTION ID:105

Which of the following enzyme participates in both the citric acid cycle and the electron transport chain? 

QUESTION ID:106

Each turn of an α-helix in secondary structure of protein contains: 

QUESTION ID:107

Nucleotide bases and aromatic amino acids absorb light respectively at: 

QUESTION ID:108

A 62-year-old man is admitted with emphysema and acute upper respiratory infection. Oxygen is ordered at 2 L/min. The reason for low-flow oxygen is to: 

QUESTION ID:109

The physician has ordered mannitol IV for a patient with head injury. What should be closely monitored because the patient is receiving mannitol? 

QUESTION ID:110

The serum potassium level of a patient is 2.5 mEq/L (2.5 mmol/L). Which of the following will NOT be seen on the electrocardiogram (ECG)? 

QUESTION ID:111

Which of the following is a potassium sparing diuretic? 

QUESTION ID:112

Which part of the body best represents the core body temperature? 

QUESTION ID:113

Assume that there are 6 types of nitrogen bases available and 40 types of amino acids are available for protein synthesis, then in genetic code each codon made up by minimum how many nitrogen bases?

QUESTION ID:114

The cylindrical channels in gap junctions are made of: 

QUESTION ID:115

Which of the following is NOT used as a vector in Molecular cloning? 

QUESTION ID:116

The major donor of carbon atoms of the one-carbon pool is: 

QUESTION ID:117

The computational methodology that tries to find the best matching between two molecules, a receptor and ligand is called: 

QUESTION ID:118

A sample of DNA is found to have the base composition (mole ratio) of A = 40, T = 22, G = 21 and C = 17. This suggests: 

QUESTION ID:119

In eukaryotic cell transcription, RNA splicing and RNA capping take place inside? 

QUESTION ID:120

A few chromosomes having a small fragment called the satellite, have: 

QUESTION ID:121

Microtubule and microfilament are composed of which type of protein? 

QUESTION ID:122

When an alkali metal is dissolved in NH3 , it forms a blue coloured solution. The colour is due to: 

QUESTION ID:123

CD40L, an early activation marker is predominantly expressed on which of the following lymphocyte subset? 

QUESTION ID:124

Natural killer (NK) cells recognize target cells for a cytotoxic response by which of the following mechanisms? 

QUESTION ID:125

Which of the following autoantibodies is characteristically associated with limited scleroderma? 

QUESTION ID:126

T lymphocytes in a lymph node are concentrated in which of the following anatomical locations? 

QUESTION ID:127

All of the following are housekeeping genes, EXCEPT: 

QUESTION ID:128

All are the functions of macrophages, EXCEPT: 

QUESTION ID:129

Which of the following cells release histamine and other vasoactive substances in response to allergens? 

QUESTION ID:130

When a person is lying down face up in the anatomical position, the individual is said to be: 

QUESTION ID:131

The alimentary canal of frog is short, due to its: 

QUESTION ID:132

Find out incorrect match related to the earth worm: 

QUESTION ID:133

Which of the following amino acid is the precursor for the thyroid hormones T3 and T4? 

QUESTION ID:134

The colour of earthworm body is brown due to: 

QUESTION ID:135

Which of the following disease is NOT due to protein misfolding? 

QUESTION ID:136

Which community remains stable as long as the environment remains unchanged? 

QUESTION ID:137

When a dry piece of tissue is fully burnt, all the carbon compounds are oxidized to gaseous form and the remaining is called ‘ash’. The ash contains all of the following, Except: 

QUESTION ID:138

Which is the first zone of purification in a sand bed? 

QUESTION ID:139

Which of the following type of pollution is Cultural eutrophication? 

QUESTION ID:140

Which of the following is not the landfilling method? 

QUESTION ID:141

Which of the following occurs only in plants and a few filamentous fungi? 

QUESTION ID:142

Assertion: Cleistogamous flowers produce assured seed-set even in the absence of pollinators. Reason: Cleistogamous flower do not open at all. 

QUESTION ID:143

Greenhouse effect is due to: 

QUESTION ID:144

How many of the following are Mendelian disorders?

Sickle cell anaemia, Haemophilia, Cri-du chat syndrome, Thalassaemia, Down’s syndrome, Colour blindness, Phenylketonuria, Turner’s syndrome 

QUESTION ID:145

Monascus purpureus is a yeast used commercially in the production of: 

QUESTION ID:146

In a research study, a scientist decided to use the 98% confidence interval to interpret his results. Which of the following would be true regarding the p-value to assign statistical significance? 

QUESTION ID:147

The function of a sedimentation tank in sewage treatment is to: 

QUESTION ID:148

Rusticles or 'rivers of rust' are structures that run down the sides of the sunken ships. They are formed by the action of: 

QUESTION ID:149

The charity provides support for pet owners who cannot afford private veterinary treatment is: 

QUESTION ID:150

The highest seismic domain in India is in: