ANSWER KEY
1

Scholarship Admission Test (TSAT12&12PM)

Please Read The Instructions Carefully:

  1. The examination will comprise of  Single Correct Objective type Multiple Choice Questions (MCQs) 
  2. All questions are compulsory and each carries Four marks.
  3. The total number of questions and duration of the examination are displayed on the navigation panel.
  4. There will be NO NEGATIVE MARKING for the wrong answers.
  5. The students just need to click on the Right Choice / Correct option from the multiple choices /options given with each question. For Multiple Choice Questions, each question has four options, and the candidate has to click the appropriate option.
  6. The Time of the examination begins only when the ‘Start Test’ button is pressed.
  7. The answers can be changed at any time during the test and are saved automatically. 
  8. The examinee can move to First, Last, Previous, Next, and unanswered questions by clicking on the buttons with respective labels displayed on the screen throughout the test
  9. The Time remaining is shown in the middle of the screen.
  10. The system automatically shuts down when the time limit is over OR alternatively if the examinee finishes the exam before the time he can quit by pressing the ‘FINISH Test’ button. The students don’t click the “FINISH TEST” Button until the student wants to quit from Examination.
  11. Final marks will be displayed just after completion of the test.

1 / 90

Que: Trisomy 18 is

  1. Edward’s syndrome
  2. Patau’s syndrome
  3. Tuner’s syndrome
  4. Klinefelter’s syndrome

2 / 90

Que: Okazaki segments are formed during

  1. Transduction
  2. Transcription
  3. Replication
  4. Translation

3 / 90

Que: The enzyme taking part in joining two ends/fragments of DNA is

  1. Ligase
  2. Polymerase
  3. Gyrase
  4. Helicase

4 / 90

Que: DNA acts as a temple for the synthesis of

  1. DNA
  2. RNA
  3. Both DNA and RNA
  4. Protein

5 / 90

Que: For the arrangement shown in figure, the magnetic induction at the centre C

1.

2.

3.

4.

6 / 90

Que: At iso-electric point:

  1. conc. of cation is equal to conc of anion
  2. The net charge is zero
  3. Maximum conc. of di-polar ion (/zwitterion) will be present
  4. All of the above

7 / 90

Que: The dimension of the quantity is

1.

2.

3.

4.

8 / 90

Que: Luteal phase is the other name of

  1. Follicular phase
  2. Proliferative phase
  3. Menstrual flow phase
  4. Secretary phase

9 / 90

Que:

10 / 90

Que: First successful animal clone was

  1. Dolly got
  2. Dolly sheep
  3. Molly goat
  4. Molly sheep

11 / 90

Que: A particle of charge q is coming from infinity along axis of a uniformly charged ring of radius R and charge Q. At a point x distance from centre of ring it experiences maximum force. Then x is equal to

1. R

2.

3. 0

4.

12 / 90

Que: The primary sex organ is

  1. Ovary / Testis
  2. Uterus/Seminal Vesicle
  3. Breast/Beard
  4. Spermatic cord

13 / 90

Que: Which of the following is not a colligative property?

  1. Vapur pressure
  2. Depression in f.pt.
  3. Elevation in b.pt.
  4. Osmotic pressure

14 / 90

Que: Potatoes are cultivated by

  1. Seeds
  2. Foliar buds
  3. Buds on tubers
  4. Cuttings of roots

15 / 90

Que: A disease caused by an autosomal primary nondisjunction is

  1. Down’s syndrome
  2. Klinefelter's syndrome
  3. Turners’s syndrome
  4. Sickle cell anemia

16 / 90

Que: Name the enzyme that facilitates the opening of DNA helix during transcription.

  1. DNA helicase
  2. DNA polymerase
  3. RNA polymerase
  4. DNA ligase

17 / 90

Que: Natural parthenogenesis occurs in

  1. Drosophila
  2. Housefly
  3. Honey Bee
  4. All the above

18 / 90

Que: In the face-centered cubic unit cell, the radius of atoms in terms of edge length (a) of unit cell is:

  1. a/2
  2. a/sqrt{2}
  3. a/2sqrt{2}
  4. sqrt{3}a/4

19 / 90

Que: The fraction of volume occupied by atoms in a primitive cubic unit cell is nearly:

  1. 0.48
  2. 0.52
  3. 0.55
  4. 0.68

20 / 90

Que: External/accessory/secondary sexual characters first appear in

  1. Childhood
  2. Puberty
  3. Foetus
  4. Adulthood

21 / 90

Que: The secondary sex organ is

  1. Testis
  2. Breast
  3. Beard
  4. Vas deferens

22 / 90

Que: The stability of dihalides of Si, Ge, Sn, and Pb increases steadily in the sequence:

  1. PbX2 < SnX2 < GeX2 < SiX2
  2. GeX2 < SiX2 < < SnX2 < PbX2
  3. SiX2 < GeX2 < PbX2 < SnX2
  4. SiX2 < GeX2 <  SnX2 < PbX2

23 / 90

Que: Mechanism that causes a gene to move from one linkage group to another is called

  1. Crossing over
  2. Inversion
  3. Duplication
  4. Translocation

24 / 90

Que: Menstrual cycle is generally of

  1. 21 days
  2. 28 days
  3. 30 days
  4. 40 days

25 / 90

Que: Chalaza is

  1. Space between integument and nucellus
  2. Ridge formed by fusion of funicle with the body of the ovule
  3. Place of origin of integuments
  4. Place where nucellus communicates with the cavity of the ovary

26 / 90

Que: Find out wrongly matched pair

  1. Tuber – Potato
  2. Leaf buds – Banana
  3. Offsets – Water Hyacinth
  4. Rhizome – ginger

27 / 90

Que: A Clitoris is related to penis

  1. Analogous
  2. Homologous
  3. Nonfunctional part in females
  4. Functional equivalent in females

28 / 90

Que: Flow of information during translation is?

  1. mRNA →Protein
  2. DNA → mRNA
  3. mRNA →DNA
  4. DNA → protein

29 / 90

Que: Binary fission is a type of

  1. Vegetation propagation
  2. Asexual reproduction
  3. Sexual reproduction
  4. Nuclear fragmentation

30 / 90

Que: Accessory sex character is

  1. Beard
  2. Breast
  3. Moustaches
  4. All the above

31 / 90

Que: Hargobind Khorana was awarded Nobel prize for

  1. Deciphering genetic code
  2. Artificial gene synthesis
  3. Nucleotide sequence of tRNA
  4. Discovery of transposons

32 / 90

Que: Two identical circular loops of metal wire are lying on a table without touching each other. Loop A carries a current which increases with time. In response, the loop B

1. Remains stationary

2. Is attracted by the loop A

3. Is repelled by the loop A

4. Rotates about its centre of mass with centre of mass fixed

33 / 90

Que: Reproduction which does not involve gametic union is

  1. Parasexual reproduction.
  2. Apomixes
  3. Parthenogenesis
  4. Agamospermy

34 / 90

Que: The materials suitable for making electromagnets should have

1. High retentivity and high coercivity

2. High retentivity and low coercivity

3. Low retentivity and high coercivity

4. Low retentivity and low coercivity

35 / 90

Que: If two liquids A left (P_{A}^{^{circ}}=100 torr right )  and B left (P_{B}^{^{circ}}= 200 torr right ) which is completely immiscible with each other, each one will behave independently of the other are present in a closed vessel. The total pressure of the system will be:

  1. less than 100 torr
  2. greater than 200 torr
  3. between 100 to 200 torr
  4. 300 torr

36 / 90

Que: Endosperm is generally

  1. Diploid
  2. Haploid
  3. Triploid
  4. Polyploid

37 / 90

Que: Pollination is

  1. Shedding of pollen from anthers
  2. Similar to fertilization of animals
  3. Transfer of pollen from anthers to stigmas
  4. Transfer of pollen from anthers to ovules

38 / 90

Que: The point at which funiculus touches the ovule is

  1. Chalaza
  2. Hilum
  3. Raphe
  4. Endothelium

39 / 90

Que: Parthenogenesis is the development of new individual from

  1. A single gamete without fertilization.
  2. Fertilization of female gamete with female gamete
  3. Fertilization of male gamete with male gamete.
  4. Vegetative structure.

40 / 90

Que: First menstrual cycle is

  1. Parturition
  2. Menopause
  3. Menarche
  4. Implantation

41 / 90

Que: Two point charges q and 4q are located at a distance 2a apart. A charge Q is placed along the line joining them as shown in figure so that force on this becomes zero. The distance between charges q and Q is

1.

2.

3.  

4.

42 / 90

Que: Fusion of one male gamete with egg and other of the same pollen tube with two polar nuclei is

  1. Triple fusion
  2. Vegetative fertilization
  3. Double fertilization
  4. Parthenogenesis

43 / 90

Que: At puberty women start producing

  1. Sperms
  2. Urine
  3. Young ones
  4. Ova

44 / 90

Que: A true fruit is the one in which the, fleshy part of the fruit is derived from

  1. Thalamus
  2. Ovary
  3. Inflorescence axis
  4. Apocarpous gynoecium

45 / 90

Que: Seminiferous tubules open into

  1. Epididymis
  2. Vesa efferentia
  3. Vasa deferentia
  4. Rete testis

46 / 90

Que: The catalyst used in the manufacture of ammonia by Haber's process is:

  1. Pt
  2. Fe
  3. Mo
  4. V2O5

47 / 90

Que: Vegetative propagation through budding occurs in

  1. Rose
  2. Agave
  3. Yeast
  4. Ginger

48 / 90

Que: Aquatic weed which is popularly called “terror of Bengal” is

  1. Erythroxylum
  2. Eichhornia
  3. Echinus
  4. Echidna

49 / 90

Que: Menstrual cycle occurs in

  1. Female primates
  2. Human females
  3. Mammalian females
  4. Rabbit

50 / 90

Que: Match column I with column II and select the correct option from the given codes:

Column I                                            Column II

  1. Parthenocarpy                                (i) Seed formation without fertilization
  2. Polyembryony                                (ii) More than one embryo in same seed
  3. Apomixis                                         (iii) Seedless fruits without fertilization
  4. Somatic embryogenesis               (iv) Embryo develops from a somatic cells
  1. A – (iv), B – (ii), C – (iii), D – (i)
  2. A – (iii), B – (ii) , C – (i), D – (iv)
  3. A – (i), B – (iv), C – (iii), D – (ii)
  4. A – (ii), B – (iii), C – (i), D – (iv)

51 / 90

Que: Self pollination is transfer of pollen from anther to the stigma of

  1. Same flower.
  2. Same or different flower of the same plant.
  3. Flowers of different plants.
  4. Different flowers of the same plant.

52 / 90

Que: Identify product of below Fischer esterification reaction:

53 / 90

Que: Which of the following amino acids has the lowest iso-electric point?

  1. Glycine
  2. Alanine
  3. Aspartic acid
  4. Lysine

54 / 90

Que: Select the incorrect statement regarding Gauss's theorem

1. Gauss's theorem is true for any closed surface

2. Gauss's theorem is based on the inverse square dependence on distance contained in the Coulomb's
law

3. Gaussian surface can pass through a continuous charge distribution

4. For a closed surface where qfree  is free charge inside surface

55 / 90

Que: A thin wire carrying current i is placed along positive z-axis. The unit vector of magnetic field at a point (a, a, 0) is

1.

2.

3.

4.

56 / 90

Que: Number of sperms present in a single ejaculation of semen contains

  1. 10,000
  2. 100,000 – 1000,000
  3. 30 – 40 million
  4. 300 – 400 million

57 / 90

Que: Puberty occurs in females at the age of

  1. 8-10 years
  2. 11-14 years
  3. 15-17 years
  4. 18-20 years

58 / 90

Que: Anemophily is pollination through

  1. Water
  2. Air
  3. Insects
  4. Worms

59 / 90

Que: Menopause occurs in females to the age of

  1. 55-60 years
  2. 50-55 years
  3. 45-50 years
  4. 37-42 years

60 / 90

Que: Charges q, 2q, 4q, 8q, ..... are placed along x-axis at r, 2r, 4r, 8r, ..... from origin respectively. The net electric field at origin is

1. Infinite

2.

3. 

4.

61 / 90

Que: The degree of dissociation of an electrolyte is α and its van't Hoff factor is i. The number of ions obtained by complete dissociation of 1 molecule of the electrolyte is :

  1. frac{i+alpha -1}{alpha }
  2. i-alpha -1
  3. frac{i-1}{alpha }
  4. frac{i+1+alpha }{1-alpha }

62 / 90

Que: An uniform magnetic field B and a uniform electric field E act in a region. If a charge particle enters in this region then the charged particle may remain undeflected in the region

1.

2.

3.

4.

63 / 90

Que: Phosphine acetylene and ammonia can be formed by treating water with:

  1. Mg3P2, Al4C3, Li3N
  2. Ca3P2, CaC2, Mg3N2
  3. Ca3P2, CaC2, CaCN2
  4. Ca3P2, Mg2C, NH4NO3

64 / 90

Que: This employs sexual reproduction

  1. Amoeba
  2. Euglena
  3. Plasmodium
  4. Sycon

65 / 90

Que: Maximum life span of a dog in years is

  1. 5
  2. 10
  3. 15
  4. 20

66 / 90

Que: Karyogamy is?

  1. Fusion of two germ cells
  2. Fusion of two gametic nuclei
  3. Fusion of a somatic cell and a reproductive cell
  4. Fusion of two somatic cells

67 / 90

Que: Menstrual cycle is controlled by

  1. Estrogen and progesterone of ovary
  2. FSH and LH of pituitary
  3. Both A and B
  4. FSH of pituitary

68 / 90

Que: Hermaphrodite animal is

  1. Spider
  2. Honey Bee
  3. Ascaris
  4. Leech

69 / 90

Que: Identify from the following group of animals that exhibit oestrus cycle

  1. Lion, deer, dog and cow
  2. Cow, monkey, elephant and ape
  3. Monkey, ape, man and elephant
  4. Lion, dog, monkey and Spider

70 / 90

Que: A conducting rod is moved with a constant velocity v in a magnetic field. A potential difference appears across the two ends

1.

2.

3.

4. None of these

71 / 90

Que: Ginger is multiplied vegetatively by

  1. Rhizome
  2. Tube
  3. Stem
  4. Bud

72 / 90

Que: A point charge q and a dipole of dipole moment is placed as shown in the figure. The force acting
on the dipole due to charge q is

1. Rightward

2. Upward

3. Leftward

4. Downward

73 / 90

Que: If galvanometer shows null deflection in the given figure then the value of Y is

1. 100Ω

2. 200Ω

3. 300Ω

4. 400Ω

74 / 90

Que: Progesterone is secreted by

  1. Corpus luteum
  2. Corpus albicans
  3. Leydig cells
  4. Graafian cells

75 / 90

Que: What is the major product of the following reaction?

76 / 90

Que: Assuming complete ionization, the solution having a maximum freezing point will be:

  1. 1 M CaF2
  2. 1.5 M (Al2SO4)3
  3. 2 M NaCl
  4. 1 M AgNO3

77 / 90

Que: Which of these dehydrates most easily?

78 / 90

Que: Among the given pairs, in which pair first compound reacts faster than second compound in Sn1 reaction?:

79 / 90

Que: In the body-centered cubic unit cell and simple cubic unit cell, the radius of atom in terms of edge length (a) of the unit cells is respectively:

  1. frac{a}{2},frac{a}{2sqrt{2}}
  2. frac{a}{sqrt{2}}, frac{a}{2}
  3. frac{a}{2sqrt{2}},frac{a}{2}
  4. frac{sqrt{3}a}{4},frac{a}{2}

80 / 90

Que: Atoms in P4 molecule of white phosphorus arranged regularly in the following way:

  1. At the corners of a cube
  2. At the corners of an octahedron
  3. At the corners of a tetrahedron
  4. At the center and corners of a tetrahedron

81 / 90

Que: A wire has resistance 16Ω . It is bent in the form of an equilateral triangle. The effective resistance
between the two points on any median of the triangle is

1. 16Ω

2. 8Ω

3. 4Ω

4. 32Ω

82 / 90

Que: Two cells 6V, 1Ω and 4 volt, 2Ω are connected to form a closed loop. The current, which cannot flow through the loop is

1.

2.

3.

4. All of these

83 / 90

Que: What is the major product of the following reaction?

84 / 90

Que: The ratio of secondary to the primary turns in a transformer is 5 : 4. If the power output be P, then the input power neglecting all loses must be equal to

1. 1.25 P

2. 0.8 P

3. P

4. 1.44 P

85 / 90

Que: At a certain place, horizontal component of earth’s field is times the vertical component of earth’s
field. The angle of dip at this place is

1. 30°

2. 45°

3. 60°

4. 90°

86 / 90

Que: An inducter L and a capacitor C are connected in the circuit as shown in the figure. The frequency of power suppy is equal to the resonant frequency of the circuit. Which ammeter will read zero?

1. A1

2. A2

3. A3

4. None of there

87 / 90

Que: A copper rod of length l is rotated about mid point of rod, perpendicular to the magnetic field B with
constant angular velocity ω. The induced emf between the two ends is

1.

2.

3. fn_cm 2Bomega l^{2}

4. Zero

88 / 90

Que: The temperature in the scrotum necessary for sperm formation should be

  1. 2oC above body temperature
  2. 2oC below body temperature
  3. 4oC above body temperature
  4. 4oC below body temperature

89 / 90

Que: Identify the amino acid obtained by hydrolysis of the below compound:

  1. Glycine
  2. Alanine
  3. Both (a) and (b)
  4. None of these

90 / 90

Que: A bar magnet of magnetic moment M and pole strength m is broken in two equal part along the magnetic axis. The magnetic moment and pole strength of each part are

1.

2.

3.

4. M, m