1. The ‘pulse’ of the aquatic environment can be ascertained by measuring

    (A) Nitrogen

    (B) Oxygen

    (C) Alkalinity

    (D) Conductivity

    Correct Answer

    Answer: Option B

  2. What is the function of a dynamo?

    (A) To convert heat energy into light energy
    (B) To convert light energy into heat energy

    (C) To convert mechanical energy into electrical energy
    (D) To convert electrical energy into mechanical energy

    Correct Answer

    Answer: Option C

  3. To produce sound it is necessary that

    (A) The source should execute longitudinal vibrations

    (B) The source should execute transverse vibrations

    (C) The source may execute any type of vibrations

    (D) The vibrations of source are not necessary

    Correct Answer

    Answer: Option C

  4. Friction can be reduced by changing from

    (A) Sliding to rolling

    (B) Rolling to sliding

    (C) Potential energy to kinetic energy

    (D) Dynamic to static

    Correct Answer

    Answer: Option A

  5. If the plane of the earth’s equator were not inclined to the plane of the earth’s orbit

    (A) The year would be longer

    (B) The winters would be longer

    (C) There would be no change of seasons

    (D) The summers would be warmer

    Correct Answer

    Answer: Option C

  6. Change of seasons occur due to

    I. Earth’s rotation

    II. Earth’s revolution

    III. Inclination of Earth’s axis

    (A) I and II only

    (B) II and III only

    (C) I and III only

    (D) I, II and III

    Correct Answer

    Answer: Option B

  7. When a ship crosses the International Date Line from West to East

    (A) It losses one day

    (B) It gains one day

    (C) It loses half a day

    (D) It gains half a day

    Correct Answer

    Answer: Option A

  8. A lunar eclipse occurs when

    (A) Sun, Moon and Earth are not in the same line

    (B) Earth comes between the Sun and the Moon

    (C) Moon comes between the Sun and the Earth
    (D) Sun comes between the Earth and the Moon

    Correct Answer

    Answer: Option B

  9. “Equinox” means

    (A) Days are longer than nights

    (B) Days and nights are equal

    (C) Days are shorter than nights

    (D) None of these

    Correct Answer

    Answer: Option B

  10. The technique of recording and reproducing three-dimensional images of objects is known as
    (A) Audiography

    (B) Lexicography

    (C) Holography

    (D) Photography

    Correct Answer

    Answer: Option C

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