General Science Questions (MCQs) for Competitive Examinations

General Science Multiple choice questions for GK paper in SSC, NDA, CDS, UPSC, UPPSC and State PSC Examinations.

11. Which of the following have cold, moist winters and short summers and are dominated by gymnosperms?

[A] Taiga
[B] Polar Tundra
[C] Alpine Tundra
[D] Tropical Rain Forest

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12. The radio reception improves slightly during the night. What could be the possible reason(s) for this?
1.Sunlight affects radio broadcasts to some extent during the day
2.Magnetic field of the earth acts with reduced intensity during the night, thereby reducing its impact on broadcasts
Choose the correct option from the codes given below:

[A] Only 1
[B] Only 2
[C] Both 1 & 2
[D] Neither 1 nor 2

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13. With reference to a swinging pendulum, which among the following statements is correct when it is at bottom (middle of arc)?

[A] It has maximum kinetic energy and minimum potential energy
[B] It has maximum potential energy and minimum kinetic energy
[C] It has zero kinetic energy
[D] It has zero total energy

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14. Many a times, we read in newspapers that detergents are used in making the adulterated milk. Why detergents are used in Milk adulteration ?

[A] To dissolve the fats in water
[B] To neutralize the acidity of the solution
[C] To replace the milk solids
[D] To preserve it during transportation

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15. Acid rain is capable of damaging the buildings and historic monuments which are made up of rocks such as limestone and marble. Which among the following is the end product of such reaction?

[A] Quick Lime
[B] Calcium Carbonate
[C] Calcium Hydroxide
[D] Gypsum

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16. Consider the following pairs:

  1. Strontium carbonate – Red fireworks
  2. Barium chloride – Green fireworks
  3. Copper chloride – Blue fireworks
  4. Sodium nitrate – Yellow fireworks 

  Which of the above are correct?

[A] 1 & 2 Only
[B] 2 & 3 Only
[C] 1, 2 & 3 Only
[D] 1, 2, 3 & 4

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17. Consider the following statements:

  1. Addition of salt to pure water increases the boiling point of water and decreases the freezing point of water
  2. When methyl alcohol is added to water, boiling point of water decreases

Which of the above statements is/are correct?

[A] 1 Only
[B] 2 Only
[C] Both 1 & 2
[D] Neither 1 nor 2

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18. Which of the following can produce virtual images?

  1. Concave lenses
  2. Convex lenses
  3. Concave mirror
  4. Convex mirror
  5. Plane mirror

Select the correct option from codes given below:

[A] 1, 3 & 5 Only
[B] 2, 3 & 5 Only
[C] 1, 2, 3 & 4 Only
[D] 1, 2, 3, 4 & 5

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19. Mercury poisoning in India is a major environment and public health concern. Mercury is most commonly used in:

  1. Paints
  2. Compact fluorescent lamps
  3. Antiseptic agents
  4. Electrical switches

 Select the correct option from codes given below:

[A] 1, 2 & 3 Only
[B] 1 & 2 Only
[C] 2, 3 & 4 Only
[D] 1, 2, 3 & 4

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20. Consider the following statements about the Elephantiasis:

  1. It is a Neglected Tropical Disease
  2. It is a parasitic infection
  3. It causes extreme swelling in the arms and legs
  4. It is transmitted from human to human via the female mosquito

Select the correct option from codes given below:

[A] 1, 2 & 3 Only
[B] 2 & 4 Only
[C] 1, 3 & 4 Only
[D] 1, 2, 3 & 4

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