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Previous Year Questions

TLS Online TPP Program

QUESTION ID:1

Once the team of analysts identify the problem, we ____ in a better position to comment on the issue.
Which one of the following choices CANNOT fill the given blank?

QUESTION ID:2

A final examination is the ____ of a series of evaluations that a student has to go through.

QUESTION ID:3

If IMHO = JNIP; IDK = JEL; and SO = TP, then IDC = 

QUESTION ID:4

The product of three integers X, Y and Z is 192. Z is equal to 4 and P is equal to the average of X and Y. What is the minimum possible value of P?

QUESTION ID:5

Are there enough seats here? There are ___ people here than I expected.

QUESTION ID:6

Fiscal deficit was 4% of the GDP in 2015 and that increased to 5% in 2016. If the GDP increased by 10% from 2015 to 2016, the percentage increase in the actual fiscal deficit is

QUESTION ID:7

Two pipes P and Q can fill a tank in 6 hours and 9 hours respectively, while a third pipe R can empty the tank in 12 hours. Initially, P and Rare open for 4 hours. Then P is closed and Q is opened. After 6 more hours R is closed. The total time taken to fill the tank (in hours) is __ .

QUESTION ID:8

While teaching a creative writing class in India, I was smprised at receiving stories from the students that were all set in distant places: in the American West with cowboys and in Manhattan penthouses with clinking ice cubes. This was, till an eminent Caribbean writer gave the writers in the once-colonized countries the confidence to see the shabby lives around them as wo1ihy of being "told" .
The writer of this passage is smprised by the creative writing assignments of his students, because ------

QUESTION ID:9

Mola is a digital platform for taxis in a city. It offers three types of rides - Pool, Mini and Prime. The Table below presents the number of rides for the past four months. The platform earns one US dollar· per ride. What is the percentage share of revenue contributed by Prime to the total revenues of Mola, for the entire duration?

QUESTION ID:10

X is an online media provider. By offering unlimited and exclusive online content at attractive prices for a loyalty membership, X is almost forcing its customers towards its loyalty membership. If its loyalty membership continues to grow at its current rate, within the next eight years more households will be watching X than cable television.

Which one of the following statements can be inferred from the above paragraph?

QUESTION ID:11

The compound that provides a carboxylic acid, upon treatment with Br2/ NaOH followed by acidification, is.

QUESTION ID:12

The boiling point of halogens from F2 to I2 increases due to

QUESTION ID:13

According to VSEPR theory, the species that has the smallest F-X-F angle (where X = central atom) is

QUESTION ID:14

The total number of tautomers for the following molecule (including the structure provided below) is __

QUESTION ID:15

The total number of stereoisomers possible for the following structure is __


QUESTION ID:16

For the reaction mechanism, 

the rate law is


QUESTION ID:17

Match the type of reaction in Group-1 with the most appropriate description in Group-2

QUESTION ID:18

The reactants P and Q in the following reaction are


QUESTION ID:19

The major product formed in the following reaction is 


QUESTION ID:20

The most stable coordination complexes P and Q formed in the following reaction are 


QUESTION ID:21

A coordination complex Y upon reaction with AgN03 solution does NOT give any precipitation. Complex Y possesses two isomers, of which one has zero dipole moment. The crystal field stabilization energy of Y is either . The magnetic moment for
Y is found to be 3.9 Bohr Magneton. The coordination complex Y is

QUESTION ID:22

A protein in denatured state (D) is in equilibrium with native state (N).

At 360 K, both N and D states are equally populated. If the standard entropy change for the reaction at this temperature Δ0 = -139 J K -1 mol-1, then the corresponding standard enthalpy change ΔHO for the reaction in kJ mol-1 (rounded off to one decimal place) is

QUESTION ID:23

The pH of a 1.0 L buffer solution containing 0.2 mol of acetic acid (CH3COOH) and 0.3 mol of sodium acetate ( CH3COON a) is 5. 0. The Ka of acetic acid is P x 10-5, where the numerical value of P (rounded off to one decimal place) is __

QUESTION ID:24

Based on molecular orbital the01y, the number of paramagnetic species in the following list 
is (assume that there is no change in energy of the orbitals upon addition/removal of electrons in a molecule)

QUESTION ID:25

Given the standard reduction potentials, Eocu+z/cu = 0.34 V and EAg+ /Ag = 0.80 V, the standard free energy change (Δ0) for the reaction
Cu (s) + 2Ag+ (aq) Cu+2 (aq) + 2Ag (s)
in kJ mol-1 (rounded off to one decimal place; F= 96500 C mol-1), is __

QUESTION ID:26

Catalase is found exclusively in

QUESTION ID:27

RAG recombinase is responsible for the formation of specific immune receptors. This process occurs in

QUESTION ID:28

The example of substrate level phosphorylation in glycolysis is

QUESTION ID:29

The dipeptide with least rotational barrier in the peptide bond is


QUESTION ID:30

The light-harvesting pigment NOT used by Cyanobacteria for photosynthesis is

QUESTION ID:31

Slow intravenous infusion of ethanol is a therapy to treat methanol poisoning. The underlying chemical reaction is an example of

QUESTION ID:32

Nitric oxide synthase is responsible for generation of Nitric oxide, an important signaling molecule. The substrate for this enzyme is

QUESTION ID:33

Allergies are due to a hyper immune response. Thugs given to counter allergies target

QUESTION ID:34

The electrostatic interaction energy between a positively charged atom A and negatively charged atom B separated by 3 A0 in water is -6 kJ/mol. Considering the relative
permittivity of water to be 80, the electrostatic interaction energy in kJ/mol (rounded off to one decimal place) between atoms A and B in vacuum is __ .

QUESTION ID:35

You are given a 0.1M solution of Glucose (stock solution). The stock solution required to make 0.5 ml of0.005M Glucose solution (rounded off to three decimal places) in ml is

QUESTION ID:36

A mixture of the following purified proteins, 1gG, 1gM and Fab fragment of immunoglobulins, is separated using gel filtration chromatography. The order of elution of
these proteins (first to last) is

QUESTION ID:37

The ascending order of half-life for the radioactive isotopes, 125I, 3H , 14C and 32P, is

QUESTION ID:38

The enzyme NOT involved in oxidation of the molecule shown below is

QUESTION ID:39

Dpnl is used to digest the PCR product during site directed mutagenesis because

QUESTION ID:40

Which one of the following is an incorrect biomolecule-modification pair?

QUESTION ID:41

The crystal structural  of a peptide has an ordered structural repeat of amino acids with a distance of ~ 6.5 A0 between the alternate Ca atoms. Which one of the following pair of dihedral angles accurately represents the peptide structural ?

QUESTION ID:42

Absence of detectable protein expression upon blunt-ended mutation-free cloning of an E. coli gene with its own promoter in E. coli cells can be due to

QUESTION ID:43

The C-terminal carboxyl group and the N-terminal  amino group in amino acids have a dissociation constant (pKa) of 2.2 and 9 .2, respectively. The pKa of side chain carboxyl group in glutamic acid is 4.2 and side chain amino group in lysine is 10.2. The difference in isoelectric point (pi) of lysine and glutamic acid (rounded off to two decimal places) is

QUESTION ID:44

X different sized DNA fragments can be observed upon incomplete EcoRI digestion of identical DNA molecules with two EcoRI sites as shown below. The maximum value of X is 

QUESTION ID:45

An uncharged protein (P) has an Asp in position 23 with a molecular weight of 6501 Da, as determined by mass spectrometry. The uncharged mutant of this protein (P') contains a single amino acid substitution with Asn at position23. The molecular weight of P', as determined by mass spectrometry (rounded off to one decimal place) is __ Da.

QUESTION ID:46

Which one of the following ecosystems is represented by an inve1ted pyramid of numbers?

QUESTION ID:47

Raphides are deposits of

QUESTION ID:48

Which one of the following families shows bicollateral vascular bundle in the transverse section of the stem?

QUESTION ID:49

Arbuscules are highly branched structures, formed by

QUESTION ID:50

Which one of the following combinations of polysaccharides is present in plant cell wall?

QUESTION ID:51

Which one of the following statements is INCORRECT?

QUESTION ID:52

Which one of the following statements is INCORRECT with respect to cyclic photophosphorylation?

QUESTION ID:53

The plant cells are considered totipotent. The phenomenon of a mature cell reveling to the meristematic state and forming undifferentiated callus tissue is called

QUESTION ID:54

Glyphosate is a broad spectrum herbicide. Upon application to leaves, it is translocated to meristematic areas and underground rhizomes by

QUESTION ID:55

If a species has 2n = 16 chromosomes, the number of chromosomes per cell in a double monosomic individual would be ----

QUESTION ID:56

Rubisco catalyzes conversion of ribulose 1 ,5-bisphosphate to
P. two molecules of stable 3-phosphoglycerate
Q. one molecule of 3-phosphoglycerate and one molecule of phosphoglycolate
R. one molecule of ribulose 5-phosphophate
S. one molecule of ribose 5-phosphate
Choose only the correct combination

QUESTION ID:57

Select correct combination of molecules given in Group I with their functions in Group II

QUESTION ID:58

Match the plant species and their corresponding families with their economically important

QUESTION ID:59

Cybrids may arise through the

QUESTION ID:60

Match the disease with causative organism and affected crop

QUESTION ID:61

Match the options in Group I with that of Group II with respect to steps in signal transduction mechanism in plants

QUESTION ID:62

Which one of the following statements is CORRECT with respect to endosperm development? It originates

QUESTION ID:63

Which one of the following methods IS INCORRECT with respect to haploid plant production? It can be produced

QUESTION ID:64

Plant weight is determined by a pair of alleles at each of the two independently assorting loci (Aa and Bb) that are additive and equal in their effects. The recessive alleles do not contribute towards plant weight. Plants with genotype aa bb are 1 gin weight, whereas plants with genotype AA BB weigh 3.4 g. Plant with genotype aa bb is crossed with a plant of genotype AA BB. The weight (in g, round off to one decimal place) of an individual plant in F1 progeny of this cross would be

QUESTION ID:65

A cell in G1 of Inte1phase has 12 chromosomes. In Anaphase-I of meiosis, the number of DNA molecules per cell will be

QUESTION ID:66

Chloramphenicol and tetracycline are broad spectrum antibiotics which inhibit bacterial growth by targeting ___ _

QUESTION ID:67

Which of the following radiation methods is used in preserving food from spoilage by microorganisms?

QUESTION ID:68

Which part of the lipopolysaccharides has toxic properties that make some bacterial infections a potentially serious medical problem?

QUESTION ID:69

Microbes make up about _____ of erath's living material by weight

QUESTION ID:70

The highly contagious viral disease measles is caused by a

QUESTION ID:71

Secondary metabolites such as penicillin from mold are produced during the __ _

QUESTION ID:72

Dick test is used to assess the susceptibility to ____ _

QUESTION ID:73

Which of the following is a symbiotic bacterial genus that converts nitrogen into nitrogen containing compounds that are utilized by legume plants to synthesize amino acids?

QUESTION ID:74

What is the enzyme involved in the following reaction?

QUESTION ID:75

A bacterial culture contains 500 organisms I mL in the exponential growth phase at 8 am in the morning. If you consider a generation time of 20 minutes, the total number of organisms I mL (round off to the nearest integer) after three hours (i.e. at 11 am in the morning) will be

QUESTION ID:76

Folic acid synthesis in bacteria is competitively inhibited by sulfonamides. Which of the following essential components is replaced by sulfonamides during the process of folic acid synthesis?

QUESTION ID:77

Which of the following cellular structures are absent in eukaryotes and are present at least in some prokaryotic organisms?
(i) Respiratory enzymes
(ii) Ribosomes
(iii) Nucleoid
(iv) Intemal membranes
(v) Pili

QUESTION ID:78

Granules are inclusion bodies found in bacteria. Which of the following statements are true about granules?
(i) Granules can be storage vessels for carbohydrates/lipids
(ii) Some granules supply substances for a variety of metabolic processes
(iii) Granules are dissolved in cytoplasm
(iv) Granules are membrane-enclosed structures

QUESTION ID:79

Match the culture media to their uses

QUESTION ID:80

Among the following characteristics listed below, select those that are the most appropriate for archaebacteria.
(i) Peptidoglycan containing muramic acid and D-amino acids are present in cell wall
(ii) Long chain branched alcohols (phytanols) bound to glycerol by ether linkages are found in the lipids of cytoplasmic membrane
(iii) First amino acid to initiate new polypeptide chain is N-F01mylmethionine
(iv) Translation process is sensitive to the action of diphtheria toxin

QUESTION ID:81

Which of the following processes are involved in horizontal gene transfer (HGT)?
(i) Conjugation
(ii) Transduction
(iii) Binary fission
(iv) Transformation
(v) Translesion synthesis
(vi) Transversion

QUESTION ID:82

Match the class of antibodies to appropriate description or function

QUESTION ID:83

Match the diseases with the appropriate causative agents

QUESTION ID:84

Consider a spherical bacterial cell with diameter 2 micro m and a eukaryotic cell of spherical shape with a diameter of20 micro m. The surface area to volume (in micro m- 1) ratio of the bacterial cell (round off to 1 decimal place) is times more than that of the eukaryotic cell.

QUESTION ID:85

When grouping bacteria using numerical taxonomy approach, many characteristics are determnined for each strain. If all characteristic are same, then the % similarity is 100. When comparing two bacterial strains, if 72 characteristic are the same and 44 characteristic are different, the% sirnilru1ty (round off to 2 decimal places) between the two strains is __ .

QUESTION ID:86

Which one of the following animals possesses two chambered heart?

QUESTION ID:87

In eukaryotic chromatin organization, which one of the histones seals off the nucleosome at the location at which linker DNA enters and leaves the nucleosome?

QUESTION ID:88

Which one of the following parasites does NOT cause lymphatic filariasis?

QUESTION ID:89

A species adapted to a specific habitat is called

QUESTION ID:90

The phylum that is characterized by the animals having a "water vascular system'' is

QUESTION ID:91

The finches on the Galapagos Islands have widely differing beaks adapted according to their diets. This is an example of

QUESTION ID:92

Which one of the following animals is named as a "living fossil", where the animal is persisting above 400 million years without further major morphological evolution?

QUESTION ID:93

Consider the given peptide, Ala-Glu-Val-Asn-Ile-Asp-Pro-Asp-Gln-Gly-Asp. The net charge on the peptide at pH 1. 0 will be __

QUESTION ID:94

The total number of complementary determining regions (CDRs) in the functional form of an IgM antibody is __

QUESTION ID:95

In a 1500 base pair double stranded B-DNA, 70% of purines are adenine bases. The total number of hydrogen bonds (Watson- Crick base pairing) in the DNA will be __

QUESTION ID:96

Match the given vitamins in Column I with the related proteins in Column II

QUESTION ID:97

Match the following terms in Column I with the appropriate explanation in Column II

QUESTION ID:98

Match the respective behaviour given in Column I with the appropriate explanation in Column II

QUESTION ID:99

Closure of neural tube during neurulation is the process in which neural tube eventually forms a closed cylinder that separates from surface ectoderm. Which one of the following terms is linked to the failure in the closure of entire neural tube i.e. brain and spinal cord, over the body axis?

QUESTION ID:100

Which one of the following factors does NOT contribute to "allopatric speciation"?

QUESTION ID:101

Match the hormones in Column I to their respective physiological effects in Column II

QUESTION ID:102

The molecular weight of a double stranded DNA fragment present in mitochondria is 7.92 x 108 g mol-1. A pair of nucleotide contributes 0.34 nm to the length of DNA and the average molecular weight of a nucleotide is 330 g mol-1. The number of protein molecules, consisting of 200 amino acids each, coded by this mitochondrial DNA is __

QUESTION ID:103

An enzyme that follows Michaelis-Menten kinetics catalyzes the conversion of 35 micro M substrate into product with a reaction velocity of 10  micro M s-1 . The Km and kcat for the substrate are 14  micro M and 500 s-1 respectively. The total amount of enzyme taken for the enzyme reaction is __ nM.

QUESTION ID:104

A distinctly large population of randomly mating laboratory mice contains 36% albino mice, which is caused by a double recessive genotype (aa). The black coloured mice in the population is due to dominant genotype (AA/ Aa). Considering the fact that this population is in Hardy-Weinberg equilibrium, the frequency of heterozygous alleles (Aa) in this population is __ (round off to 2 decimal places).

QUESTION ID:105

genetic cross was made between homozygous wild-type males (a+a+b+b+c+c+) and triple - mutant females (aabbcc) of Drosophila melanogaster. Then the F1 males (a+ab+bc+c) were back crossed to the triple-mutant females which resulted in the following F2 progenies: The order of genes as determined from the above data was found to be "b a c" (note that the order is equivalent to "cab" and the order of outside makers are arbitrary). The map distance between "band c" is __ centiMorgan (round off to 1 decimal place).

QUESTION ID:106

Colloidal stability of milk casein is because of the highly hydrated carbohydrate residues in

QUESTION ID:107

Rice bran is stabilized prior to oil extraction to protect it from the activity of ____ _

QUESTION ID:108

Sticking of powder to wall of the chamber during spray drying off fruit juice is due to __ .

QUESTION ID:109

The arubigins and theaflavins in black tea are formed by the oxidation and dimerization of

QUESTION ID:110

Ratio of Schmidt number to Lewis number is ____ _

QUESTION ID:111

'Red dog' is one of the byproducts during milling of _ _

QUESTION ID:112

a) Assertion: Ash content is one of the quality indicators of the flour to be used for bread making.
r) Reason: Higher ash content indicates better quality of the bread flour.
Choose the correct answer from the following:

QUESTION ID:113

An ice cream mix of 870 g L-1 has been used to prepare ice cream which yielded a finished product of 490 g L-1. The per cent over nm is (round off to I decimal place).

QUESTION ID:114

Impeller in a fruit juice mixing tank is rotating at 200 rpm with a Reynolds number > 104. Density of juice is 1045 kg m-3. If diameter of the impeller is doubled and other conditions remained constant, the power requirement of mixing will increase by a factor of __ _

QUESTION ID:115

Paddy consisting of 20% husk has been milled to remove 6% bran during polishing. Assuming no other losses, yield (per cent) of polished rice from the paddy is (round
off to I decimal place).

QUESTION ID:116

Match the following laws in Column I with corresponding phenomenon in Column II.

QUESTION ID:117

Match the mold in Column I with its asexual/sexual spore shown in Column II.

QUESTION ID:118

Match the foods given in Column I with their specific usage given in Column II.

QUESTION ID:119

Match the bioactive compounds in Column I with their botanical source given in Column II.

QUESTION ID:120

Match the following microbial species in Column I with related disease caused by them as shown in Column II.

QUESTION ID:121

Buffalo milk having density of 1030 kg m-3 is homogenized with a pressure of 30 MPa. Given, acceleration due to gravity as 9.81 m s-2 and assuming no pressure loss, the velocity (m s-1) of the milk flowing through the homogenizer valve will be (round off to 2 decimal places).

QUESTION ID:122

Potato slices have been dehydrated from an initial solid content of 12% to a final solid content of 94%. If the peeling and other losses are to the time of 10%, final yield (per cent) of the dried chips per ton of fresh potato taken is (round off to 2 decimal places).

QUESTION ID:123

A mixed fruit beverage with 12 °Brix having specifc heat of 4298 J kg-1 K 1 is being heated from 30octo 95 oc for pasteurization at a flow rate of 1000 L h-1 in a tubular heat exchanger. Steam at 100 oc is used as heating medium which is converted into condensate at 100 oc. If the density of beverage is 1075 kg m-3 and the latent heat of steam at the given temperature is 2257 kJ kg-1, the mass flow rate of steam (kg min-1) is (round off to 2 decimal places).

QUESTION ID:124

Room air is at 40 oc with 60% relative humidity. Saturated vapour pressure of water at 40 oc is 7.375 kPa. Humid volume of air (m3 per kg of dry air) is (round off to 3 decimal places).

QUESTION ID:125

Freezing of 100 mm spherical meat ball with 60% moisture at 35 oc is being done in an air blast freezer maintained at -45 oc. Given, latent heat of fusion for water is 333.2 kJ kg-1, the1mal conductivity of meat is 1.5 W m-1 oc-1, convective heat transfer coefficient is 40 W m-2 oc-1, density of frozen meat is 980 kg m-3 and initial freezing temperature of meat ball is -10 oc. Using Plank's equation, Freezing Time (h) is (round off to 2 decimal places).