General Science Questions and Answers
General Knowledge General Science Questions with Answers enhance scientific understanding in physics, chemistry, and biology. Useful for SSC, RRB, and NDA exams, these questions strengthen your general science foundation
General Science
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124 questions
11. The variety of coal in which the deposit contains recognisable traces of the original plant material is
- bitumen
- anthracite
- lignite
- peat
12. Tetraethyl lead is used as
- pain killer
- fire extinguisher
- mosquito repellent
- petrol additive
13. Which of the following is used as a lubricant?
- Graphite
- Silica
- Iron Oxide
- Diamond
14. The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing, is
- Argon
- Xenon
- Helium
- Krypton
15. The gases used in different types of welding would include
- oxygen and hydrogen
- oxygen, hydrogen, acetylene and nitrogen
- oxygen, acetylene and argon
- oxygen and acetylene
16. The property of a substance to absorb moisture from the air on exposure is called
- osmosis
- deliquescence
- efflorescence
- desiccation
17. In which of the following activities silicon carbide is used?
- Making cement and glass
- Disinfecting water of ponds
- cutting very hard substances
- Making casts for statues
19. When an iron nail gets rusted, iron oxide is formed
- without any change in the weight of the nail
- with decrease in the weight of the nail
- with increase in the weight of the nail
- without any change in colour or weight of the nail