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Exam Year: 2001

  • Which one of the following is NOT radioactive ?

    (a)

    Astatine

    (b)

    Francium

    (c)

    Tritium

    (d)

    Zirconium

    Correct Answer:

  • Which of the following distance-time graph (x – t) represents one-dimensinal uniform motion?

    (a)

    I

    (b)

    II

    (c)

    III

    (d)

    IV

    Correct Answer:

  • Assertion (A): A Chemical reaction becomes faster at higher temperatures. Reason (R): At higher temperatures, molecular motion becomes more rapid.

    (a)

    Both A and R are individually true and R is the correct explanation of A

    (b)

    Both A and R are individually true but R is NOT a correct explanation of A

    (c)

    A is true but R is false

    (d)

    A is fasle but R is true

    Correct Answer:

    (a)

  • The following table shows the percentage change in the consumption of electricity by five towns P, Q, R, S, T from 1986 to 1988 .If town T consumed 500,000 units in 1986, how much did it consume in 1988 ?

    (a)

    371,000 units

    (b)

    531,100 units

    (c)

    551,100 units

    (d)

    571,100 units

    Correct Answer:

  • A radioactive substance has a half-life of four months. Three-fourth of the substance would decay in

    (a)

    3 months

    (b)

    4 months

    (c)

    8 months

    (d)

    12 months

    Correct Answer:

  • Which of the following weather conditions is indicated by a sudden fall in barometer reading ?

    (a)

    Stormy weather

    (b)

    Calm weather

    (c)

    Cold and dry weather

    (d)

    Hot and sunny Weather

    Correct Answer:

  • Consider the following statements : A simple pendulum is set into oscillation. Then I. the acceleration is zero when the bob passes through the mean position. II. in each cycle the bob attains a given velocity twice. III. both acceleration and velocity of the bob are zero when it reaches its extreme position during its oscillation. IV. the amplitude of oscillation of the simple pendulum decreases with time. Which of these statements are correct ?

    (a)

    I and II

    (b)

    III and IV

    (c)

    I, II and IV

    (d)

    II, III and IV

    Correct Answer:

  • Cloudy nights are warmer compared to clear cloudless nights, because clouds

    (a)

    prevent cold waves from the sky from descending on Earth

    (b)

    reflect back heat given off by Earth

    (c)

    produce heat and radiate it towards Earth

    (d)

    absorb heat from the atmosphere and send it towards Earth

    Correct Answer:

  • The mass of a body on Earth is 100 kg (acceleration due to gravity, ge – 10 m/s2). If acceleration due to gravity on the Moon ge/6, then the mass of the body on the moon is

    (a)

    100/6 kg

    (b)

    60kg

    (c)

    100 kg

    (d)

    600 kg

    Correct Answer:

  • Who is the scientist in whose honour the “Chandra” X-ray telescope has been named ?

    (a)

    Chandrasekhar Venkat Raman

    (b)

    Jagdish Chandra Bose

    (c)

    Prafulla Chandra Roy

    (d)

    Subrahmanyan Chandrasekhar

    Correct Answer: