Online General Science preparation


Hello friends, here is very important selected General Science question answer set for exam preparation. You can download in pdf format to click pdf link for all type government exam preparation.

  1. All of the following are examples of chemical changes except the–
    (A) magnetising of iron (B) rusting of iron
    (C) digestion of food (D) souring of milk
    Ans : (A)
  2. Cancer is a disease which–
    (A) cannot be spread by those who have it
    (B) is found only in human beings
    (C) develops only in certain organs of the body
    (D) is passed from generation to generation
    Ans : (A)
  3. A person born with the inner ear missing–
    (A) would not have the Eustachian tube
    (B) would never be able to hear sound
    (C) would be able to hear only with an electronic hearing aid 
    (D) could only hear a loud explosion
    Ans : (B)
  4. The possibility of hereditary variation is greatest when–
    (A) self-fertilisation occurs, as in some plants
    (B) an abundant amount of food is provided for the egg
    (C) organisms reproduce sexually
    (D) organisms reproduce asexually
    Ans : (C)
  5. Steel is more elastic then rubber because–
    (A) its density is high (B) it is a metal
    (C) ratio of stress to strain is more (D) ratio of stress to strain is less 
    Ans : (C)
  6. The chief purpose if crop rotation is to check the loss of topsoil–
    (A) by water erosion (B) by wind erosion
    (C) by weathering (D) pf its mineral content
    Ans : (D)
  7. Which of the following acts as a resistance against disease in the body ?
    (A) Carbohydrates (B) Red corpuscles
    (C) Vitamins (D) White corpuscles
    Ans : (D)
  8. What is 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
    Ans : (C)
  9. The chief constituent of Gobar Gas is–
    (A) ethane (B) methane
    (C) hydrogen (D) carbon dioxide
    Ans : (B)
  10. Who is credited with the development of polio vaccine ?
    (A) Linus Pauling
    (B) Jonas Salk
    (C) Melvin Calvin
    (D) Selman Waksman
    Ans : (B)
  11. Which of the following in the human body is popularly called the ‘Adam’s Apple’?
    (A) Adrenal (B) Liver
    (C) Thyroid (D) Thymus
    Ans : (C)
  12. On a sudden cardiac arrest, which of the following is advised as a first step to revive the functioning of human heart ?
    (A) Mouth to mouth resuscitation (B) Giving external cardiac massage
    (C) Sprinkling water on the face (D) Giving cool water to drink
    Ans : (A)
  13. Of the blood groups A, B, AB and O, which one is transfused into a person whose blood group is A ?
    (A)  Group A only (B)  Group B only
    (C)  Group A and O (D)  Group AB only
    Ans : (C)
  14. The three abundant elements in the earth’s crust are aluminium, oxygen and silicon. The correct order of their abundance is–
    (A) oxygen, aluminium, silicon (B) aluminium, silicon, oxygen
    (C) oxygen, silicon, aluminium (D) silicon, oxygen, aluminium
    Ans : (D)
  15. Penicillin is widely used as–
    (A) an antiseptic (B) a disinfectant
    (C) an antibiotic (D) an insecticide
    Ans : (C)
  16. If force is expressed in newton and the distance in meter, then the work done is expressed in–
    (A) Joule
    (B) Kg wt 
    (C) Kg wt m
    (D) Watt
    Ans : (A)
  17. The Law of Natural Selection is associated with–
    (A) Dalton
    (B) Darwin
    (C) Kepler
    (D) Mendel
    Ans : (B)
  18. When cream is separated from milk–
    (A) the density of milk increases 
    (B) the density of milk decreases
    (C) the density of milk remains unchanged
    (D) it becomes more viscous
    Ans : (A)
  19. Which one of the following statements regarding sound is true ?
    (A) It travels at its greatest speed in vacuum.
    (B) It produces transverse vibrations in the medium in which it travels.
    (C) Its source is always a vibrating material.
    (D) It cannot travel through liquids.
    Ans : (C)

The clear sky looks blue because of–
(A) reflection of light (B) refraction of light
(C) diffraction of light (D) dispersion of light
Ans : (D)

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