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CSIR-UGC NET Model Questions PAPER I

(Questions are provided by M. Jayavardhana Reddy)

1. Which of the following do not form compounds?

(A) Ur�

(B) Xe

(C) He

(D) Kr

2. Which of the following is a living fossil
   (A) Gingko biloba

(B) Pinus gerardiana

(C) Archaeopteryx

(D) Ephedra

3. Drug Vinblastin is extracted from

(A) Taxus batata

(B) Catharanthus roseus

(C) Mappia

(D) Arachis australis

4. Electronic configuration of A-12 and B-7. What is the empirical formula of compounds

(A) AB₂

(B) A₂B₂

(C) A₂B₃

(D) A₃B₂

5. Which of the following group does not form oxides?

(A) CO, H₂O, ZnO₂

(B) ZnO₂, BaO₂, AlO₂

(C) Fe₃O₄, PbO₂, BaO

(D) PbO₂, BaO, ZnO₂

6. The binary expansion of 63

(A) 11111

(B) 111111

(C) 10101

(D) 100100

7. The main reason for water scarcity in India is that

(A) India does not get adequate rainfall

(B) Most rain water runs off and flows in sea

(C) In most places the ground is not porous to recharge the ground water

(D) Water is lost by evaporation due to hot weather.

8. Fossils are likely to be found in

(A) Igneous rocks

(B) Sedimentary rocks

(C) Metamorphic rocks

(D) Meteorites

9. If a is rational and b is irrational

(A) (a+b) must be rational and (a-b) must be rational

(B) a+b may be rational or irrational

(C) a+b must be rational

(D) (a+b) or (a-b) will always be irrational

10. If the earth warms from a mean temp. of 15^oC to 20^oC the energy radiated by the earth increases by a

(A) (293/288)

(B) (293/288)²

(C) (293/288)³

(D) (293/288)⁴ 

11. C is the real no and the system of linear equations

4 x + 6y = 10

6x + 9y = C has to be solved for x and y. The system has a

(A)   Unique solution

(B)   Always has infinitely many solutions

(C)   Has infinitely many solutions only if c=15

(D)   Has infinitely many solutions only if c=15

12. Atmospheric pressure executed on earth is due to

(A) Revolution of the earth

(B) Gravitation pull

(C) Rotation of the earth

(D) Uneven heating of earth

13. Hot spots in India are found in

(A) Western ghats and Eastern Himalayas

(B) Eastern Himalayas and Western Himalayas

(C) Western ghats and Western Himalayas

(D) Eastern ghats and Western Himalayas

14. Binding of Mannose-6- P to protein lead to its localization to

(A) Lysosome

(B) Golgi body

(C) Plasma membrane

(D) Nucleus

15. Which of the following is Ca-binding protein

(A) Actin

(B) Myosin

(C) Troponin

(D) Tropomyosin

16. How can you calculate λ by using De brogilee equation

(A) λ = h/2 em

(B) λ = h²/2mev

(C) λ = √h/2emv

(D) λ = h/ √2emv

17. Bohr- effect  Borh energy of hydrogen - 13ev. What is the energy of excited hydrogen

(A) -3 -2

(B) -6.6

(C) -13

(D) -26

18. What is the resistance between A & B when each has 1 Ώ. (Diagram to be drawn)

(A) 0.5 Ώ

(B) 1 Ώ

(C) 2 Ώ

(D)  Ώ 

19. When oil is dissolved in water it forms a layer on top of water. When white light falls on it, it shows colors. This phenomenon is due to

(A) Polarization of light

(B) Dispersion of light

(C) Refraction of light

(D) Interference of light

20. Which of the following shows sporulation along with social behaviors?

(A) Archebacteria

(B) Bacillus

(C) Actinomycetes

(D) Eubacteria

21. There are two sets; one set has 10 elements; second set=7 elements the ≤ of the following is true

(A) (SUR) =17

(B) (SUR) ≤ 7

(C) (S∩R) =17

(D) (S∩R) ≤ 7

22. Which of the following is not a programming language.

(A) UNIX

(B) BASIC

(C) PASCAL

(D) FORTRAN

23. Calculate _┴ from B on AC (Diagram to be drawn)

(A) 12/5

(B) 3/4

(C) 12/6

(D) 1/2

24. Which of the following is a logistic growth curve.(Diagram to be drawn)

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b

d

a

c

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(A) b

(B) a

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����������� (D) d

25. If a part of bacterial genome is doubled it is called as

(A) Amphidiploid

(B) Merodiploid

(C) Endodiploid

(D) Polyploid

26. Asymmetric reciprocal cross occurs in

(A) Sex linked inheritance

(B) Polygenic inheritance

(C) Genes interaction

(D) Independent assortment

27. How are chromosomes of yeast and protozoa observed

(A) Electron microscopy

(B) Pulse gel electrophoresis

(C) Light microscopy and staining

(D) Fixed gel electrophoresis

28. Which organelle is involved in conversion of fat to carbohydrate in seeds

(A) Glyoxysomes

(B) Peroxisomes

 (C) Golgi bodies

            (D) Mitochondria

29. Dosage compensation in Drosophila is achieved by

(A) Hypoactivation of both X chromosomes

(B) Hyperactivation of Y chromosome

(C) Hyperactivation of maternal chromosome

(D) Hyperactivation of paternal chromosome

30. Which of the following is under permanent control of central legislation

(A) National parks

(B) Zoos

(C) Game parks

(D) Wild life sanctuaries

31. Programmed cell death in plants is due to

(A) Hypersensitivity

(B) Systemic resistance

(C) Photorespiration

(D) Closure of stomata

32. Helper T cells can be differentiated from suppressor T cells by

(A) CD4

(B) CD8

(C) CD2

(D) C40

33. The first cell affected by angiogenesis of cancer is

(A) Platelets

(B) Stem cells

(C) Endothelial cells

(D) Lymphocytes

34. Difference between Deer and antelopes is

(A) Deer shed their antlers every year

(B) Male and female have antlers

(C) Deers are gregarious

(D) Only male deer have antlers

35. Currently the polar ice sheets are approximately 3 km thick. If the thickness of the ice sheets doubles, conservation of angular momentum predicts that the duration of the day will

(A) Increase

(B) Decrease

(C) Not be affected

(D) Double

36. A true breeding tall plant is crossed to a true breeding dwarf plant. The progeny are all tall. In the following generation, out of 80 plants 5 are short and 75 tall. This suggest that height is controlled by

(A) 1 gene

(B) 2 gene

(C) 3 gene

(D) 4 gene

37. �The figure shows page gel-electro phoresis of a Klinefelter�s patient (XXY). The non disjunction occurs in paternal chromosome. The sex chromosomes are derived from

������ Paternal I�������������������� Paternal II������������������� Maternal���������� ������ Klinefelter�s Patient�����������

����� (A) Maternal��������������� (B) Paternal II������������� (C) Paternal����������������� (D) Maternal and Paternal II

38. Earnest Mayer contributed to which of the following concepts

(A) Biological species concept

(B) Ecological species

(C) Population ecology

(D) Genetic drift

39. Which of the following represents the increasing order of urine concentration by following organisms

(A) Beaver, Humans, sand rat

(B) Beaver, sand rat, human

(C) Human, sand rat, Beaver

(D) Sand rat, beaver, human

40. Taiga biome temperature and rainfall range

(A) -5 to 15^oc, 50-150 cm

(B) +5 to 15^oc, 50-100 cm

(C) +5 to 15^oc,

(D) -5 to 15^oc, 50-300 cm

41. Systemic lupus erthymatous is which of the following disease

(A) Autoimmune disease

(B) Immunodeficiency disease

(C) Bacterial diseases

(D) Inborn error of metabolism

42. Selection which occurs in a population which has a normal distribution for variations of a particular phenotypic character. The extreme individuals are eliminated from the population is called�

(A) Neutral

(B) Disruptive

(C) Stabilizing

(D) Directional

43. Random change in frequency of 2 or more than 2 alleles in a population is due to

(A) Genetic drift

(B) Gene flow

(C) a diversity

(D) Differential reproduction

44. Despite mol wt of 750 to 1500 of lipid, they are considered as macromolecules

(A) Dissolved in water to form lipid aggregates

(B) Present in membrane to form biomembranes

(C) Fats converted to carbohydrates in glyoxysomes

(D) Fatty liver is caused by alcohol

45. Synthesis of a amylase in Aleurone layer in cereals is

(A) Gibberlins

(B) Jasmonic acid

(C) Abscissic acid

(D) Brassinosteroids

46. Bio luminescence is exhibited by

(A) Red algae

(B) Brown algae

(C) Dinoflagellates

(D) Copepods

47. Silica gel (Kieselgur) is obtained from

(A) Diatoms

(B) Dinoflagellates

(C) Foraminiferans

(D) Euglenoids

48. Number of birds species in India is

(A) 500

(B) 1200

(C) 3700

(D) 4800

49. Role of carrier between PSII & PSI

(A) Carries electron from P₆₈₀ to P₇₀₀

(B) Carries electron from P₇₀₀ to P₆₈₀

(C) Carries oxygen from P₆₈₀ to P₇₀₀

(D) Carries proton from P₆₈₀ to P₇₀₀

50. A substance is heated at 65^oC for 2 minutes and is inactivated. Which of the following can it be?

(A) Protein

(B) Lipids

(C) Carbohydrates

(D) DNA

51. Which of the following Amino acid if added to a acidic solution will have buffer action on solution at the physiological pH

(A) Alanine

(B) Glycine

(C) Histidine

(D) Arginine

52. Which of the following is not true for glycolysis

(A) FADH₂ produced

(B) NADH produced

(C) Two pyruvate molecules are produced from 1 glucose molecule

(D) Ethanol, lactic acid produced

53. Dendrogram is based on

(A) Phylogenetic relations

(B) Evolutionary relations

(C) Genetics

(D) Numerical taxonomy

54. Substrate is bind to the active site of enzyme with all of these except

(A) Peptide bond

(B) Hydrogen bond

(C) Hydrophobic bond

(D) Covalent

55. Frequency of recessive allele= .4. What is the frequency of heterozygous carriers in the population of 200?

(A) 96

(B) 100

(C) 196

(D) 94

56. Evolutionary changes in one species prompt corresponding changes in other species with which the former interacts ecologically is known as

(A) Coevolution

(B) Complementation

(C) Parallel evolution

(D) Microevolution

57. In Reo virus

(A) mRNA � RNA

(B) RNA is converted into RNA

(C) DNA is converted into RNA

(D) RNA is converted into DNA

58. in DNA replication occurs

(A) One parental strand passes into each replica while second strand is built a new

(B) Both parental strands remain intact and replica is a completely new structure

(C) None of the above

(D) Both are true

59. Photolysis of water requires

(A) Mn

(B) Ca

(C) Mg

(D) N

60. Linkage group in diploid human male is

(A) 23

(B) 24

(C) 43

(D) 46

61. Relation between intrinsic growth rate (r) & small body size

(A) Rectilinear (+)

(B) Rectilinear �ve

(C) Exponential +ve

(D) Exponential -ve

62. On release of clean chit act, which one of the following exterminated after 30 years

(A) Bistonbitularia carbonifera

(B) Bistonbitularia typica

(C) Drosophila psedoobscura

(D) Drosophila persimilis�

63. For succession on rock, which will grow first of all on a bare rock

(A) Lichens

(B) Mossess

(C) Diatons

(D) Blue green alga

64. Athletes go at high attitude for practicing to improve their performance at sea level

(A) O₂ affinity for hemoglobin increases

(B) Oxygen carrying capacity increases

(C) RBC content increases

(D) DNA content increases

65. Which hormone is secreted by the developing placenta

(A) Estrogen

(B) Prolactin

(C) HcG

(D) Oxytocin

66. Deficiency of which mineral leads to interveinal chlorosis in young leaves

(A) Fe

(B) Mn

(C) P

(D) Mg²⁺

67. High BOD water introduced into clean water lake will lead to

(A) Decrease in dissolved oxygen

(B) Increase in water infectious parasites

(C) Death of organisms in water

(D) Minimate disease

68. Minimum number of genes required in autonomously replicating organisms

(A) 50-100

(B) 500-800

(C) 1000-2000

(D) 4000-6000

70. On application of a pesticide the pest population increased instead of decreasing. It may be due to

(A) Resistance

(B) Pesticide actually increased reproductive potential of pest

(C) Instead of acting on pest pesticide acted on pest predators

(D) May be the concentration of pesticide was less

71. An organism is adapted to a new environment without undergoing change. This can be explained on the basis of

(A) Pre adaptation

(B) Linkage

(C) Mutation

(D) Recombination

72. The eqⁿ x² + 2xy + y² = represents

(A) Parabola

(B) Hyperbola

(C) Straight equation

(D) Circle

73. The following structure is (Diagram to be drawn)

I I

I CH-CooH

NH₂

 

(A) Vasopressin

(B) Thyroxine

(C) Estradiol

(D) Testosterone

74. Which of the following is not true for hormones?

(A) Act away from their site of action

(B) Their action is greatly magnified by signal transduction system

(C) Large quantity required

(D) Travel the blood vascular system.

ANSWERS

1	C	11	C	21	D	31	A	41	A	51	C	61	C	71	A
2	A	12	B	22	A	32	A	42	C	52	A	62	A	72	C
3	B	13	A	23	A	33	C	43	A	53	D	63	A	73	B
4	D	14	A	24	A	34	D	44	A	54	A	64	C	74	C
5	B	15	C	25	B	35	A	45	A	55	C	65	C
6	B	16	D	26	A	36	B	46	C	56	A	66	A
7	C	17	A	27	C	37	D	47	A	57	B	67	A
8	B	18	D	28	A	38	A	48	B	58	A	68	D
9	D	19	D	29	C	39	A	49	A	59	A	69	B
10	D	20	B	30	A	40	A	50	A	60	B	70	C

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