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KVPY (SA) Mock ...

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  • Question 1
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    The average of two non-negative integers x and y is 4. How many pairs of (x, y) satisfy this condition?

  • Question 2
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    In a certain school, 71% students like cricket, 76% students like football and 82% students like tennis. Then, all the three sports are liked by at least

  • Question 3
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    Find the time taken (in seconds) by two trains to cross each other if they are running at the speeds of 46 kmph and 54 kmph, respectively in the same direction. It is given that the length of one train is 210 m and of the other train is 270 m.

  • Question 4
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    Let tn be the number of integral-sided triangles with distinct sides chosen from {1, 2, 3, ……., n}. Then, t20 - t19 equals

  • Question 5
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    A and B together can complete a piece of work in 25 days. B and C together can complete the same work in 30 days. How many days would A and C take to complete the work?

  • Question 6
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    The number of real roots of the equation: (x2 + 4x)2 - (x + 2)2 - 26 = 0 is

  • Question 7
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    In a pair of two supplementary angles, the measure of the larger angle is 44o more than the measure of the smaller one. What are the measures of these angles?

  • Question 8
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    The number of real roots of equation 3x10 + 7x6 + 5x4 + 2x2 + 1 = 0 is

  • Question 9
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    The diameter of the pupil of an eye of a person in dim light was measured to be 7 mm. Which of the following cannot be the measurement of the diameter of his pupil in bright light?

  • Question 10
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    Refractive index of glass with respect to air is 3/2. What is the refractive index of air with respect to glass?

  • Question 11
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    Which of the following phenomena can be demonstrated by light, but not by sound waves in an air column?

  • Question 12
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    The work done in carrying a packet weighing 10 kg to the top of a building 14 m high is (g = 10 m/s2)

  • Question 13
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    The IUPAC name of methyl alcohol (CH3OH) is ________.

  • Question 14
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    he following question has four choices, out of which ONLY ONE is correct.

    C-Cl bond is stronger than C-I bond because

  • Question 15
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    To which group of the periodic table does the element with electronic configuration 1s2, 2s2, 2p6, 3s2, 3p6, 3d10, 4s2, 4p6, 4d10, 5s2, 5p3 belong?

  • Question 16
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    An element has mass number 40 and has two neutrons in excess of the number of electrons. Find the number of neutrons, if it forms a cation having a unit positive charge and its electronic configuration is equal to that of Argon?

  • Question 17
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    Which of the following is a non-polar molecule?

  • Question 18
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    A real gas most closely approaches the behaviour of an ideal gas at

  • Question 19
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    For the reaction N2 + 3H2 ⇌ 2NH3 ; ΔH is equal to

  • Question 20
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    Which of the following orders of the isomers of pentane is correct in terms of increasing melting points?

  • Question 21
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    A metal 'M' is positioned between sodium and aluminium in the reactivity series. Which of the following metals can displace 'M' from its salt solution?

  • Question 22
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    What is the pH value of human urine?

  • Question 23
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    Which of the following organs is the organ of olfactory receptors?

  • Question 24
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    AIDS is a ______ disease, that causes damage to the _________.

  • Question 25
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    Ascorbic acid is a/an

  • Question 26
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    Which of the following modes of arrangement of sepals/petals is seen in pea and bean flowers?

  • Question 27
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    The part of the brain which acts as a relay centre is

  • Question 28
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    The sequence of different phases of cell cycle is

  • Question 29
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    The softening of ripened fruits can be done by

  • Question 30
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    Unlike humans, dogs cannot perspire to get rid of excess metabolic heat. They lose metabolic heat by

  • Question 31
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    Seedlings grown in dark

  • Question 32
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    The epithelium tissues forming the lining of kidney tubules are

  • Question 33
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    Pick odd one out of the following

  • Question 34
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    Which of the following plant hormones is gaseous in nature?

  • Question 35
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    Which of the following is a synthetic plant hormone?

  • Question 36
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    Pachytene occurs during

  • Question 37
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    The number of solutions of the equation |x2 - 4| = 4 + x2 is

  • Question 38
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    ABC is a right-angled triangle with angle A = 90o and 2s = a + b + c, where a > b > c. The notations have their usual meanings. Which of the following relations is correct?

  • Question 39
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    For Zn2+/Zn = - 0.76 V, Cl2/Cl- = 1.36 V, H+/1/2H2 = 0 V and Fe3+/Fe2+ = 0.77 V, the increasing order of strengths as a reducing agent is

  • Question 40
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    Which of the following is the least basic?

  • Question 41
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    The empirical formula of a compound is CH2. The mass of one mole of this compound is 42 g. Its molecular formula is

  • Question 42
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    The type of epithelium which lines the inner surfaces of fallopian tubes, bronchioles and small bronchi is known as

  • Question 43
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    In a cross between a white-eyed female dragonfly and red-eyed male, how many female progenies will inherit white eyes? (White eyes are X-linked recessive)

  • Question 44
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    With which of the following functions are chromosomes primarily concerned with?

  • Question 45
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    An intrapetiolar type of stipule is present in

  • Question 46
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    In which of the following can erythroblastosis foetalis occur?

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