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. These questions are part of GKToday’s 35000+ MCQs Bank Course in GKToday Android App

11. Consider the following differences between Physisorption and Chemisorptions:

  1. While physisorption occurs at low temperature, chemisorption occurs at high temperature
  2. While physisorption is a reversible process, chemisorption is an irreversible process

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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12. Consider the following differences between White Gold and Yellow Gold:

  1. White gold has more zinc, whereas yellow gold usually contains more nickel
  2. Rhodium coating on white gold makes it more expensive than yellow gold 

   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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13.   Consider the following statements about the Coalbed Methane:

  1. It is called 'sweet gas' because of its lack of hydrogen sulphide
  2. It contains very little heavier hydrocarbons such as propane or butane

  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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14. What will be the change in the force of attraction between two bodies if the distance between them is doubled?

[A] No change
[B] Becomes double
[C] Becomes less by four times
[D] Becomes nine times

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15. Which of these statements is correct about the energy of a satellite:

[A] Potential energy= – 2 (Kinetic energy)
[B] Potential energy= 2 (Kinetic energy)
[C] Potential energy= – 3 (Kinetic energy)
[D] Potential energy= – (Kinetic energy)

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16. Which of the following is NOT an example of capillary action?

[A] Rise of ink in the fine pores of blotting paper
[B] soaking of water by a towel
[C] Wood swells in rainy season due to rise of moisture
[D] None of the above

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17. Which of the following is correct about the electromagnetic waves?

[A] They require a solid medium to travel
[B] They can travel through vacuum
[C] Electromagnetic waves can only travel through gases
[D] None of the above

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18. Which of the following is NOT a mechanical wave?

[A] Sound wave
[B] Seismic wave
[C] Light wave
[D] Water waves

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19. What is the barrier potential for Germanium?

[A] 0.3 V
[B] 0.7 V
[C] 1 V
[D] 1.7 V

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20. What is dry ice?

[A] solidified form of Carbon dioxide
[B] frozen heavy water
[C] isotope of Hydrogen
[D] popular name of Benzene

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