General Science Questions Practice Question and Answer
8 Q: What principle does the publisher fibre work on?
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5e589516c731373e79bc76ed- 1Total internal reflectiontrue
- 2Interferencefalse
- 3Scatteringfalse
- 4Diffractionfalse
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Answer : 1. "Total internal reflection "
Q: The principle of 'black hole' was enunciated
1766 05e37d24572f03a106da6cbbb
5e37d24572f03a106da6cbbb- 1C . V. By Ramanfalse
- 2H . J. Bhabhafalse
- 3S . Chandrasekhar bytrue
- 4H. Khurana byfalse
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Answer : 3. "S . Chandrasekhar by "
Q: The maximum number of electrons on a principal shell is–
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5e2535ab643ee23eb6ae9f29- 1n²false
- 2nfalse
- 32n²true
- 43n²false
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Answer : 3. "2n²"
Q: Solar cells work on the principle of
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5df9df9f80cad641a0c9fd86- 1Photovoltaic effecttrue
- 2photoelectric effectfalse
- 3photoconductive effectfalse
- 4photosynthesisfalse
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Answer : 1. "Photovoltaic effect "
Q: The force that a neutron exerts on a proton inside an atom is:
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5dbc3fb76960167377568262- 1Nuclear forcetrue
- 2Gravitational forcefalse
- 3Tidal forcefalse
- 4Electrostatic forcefalse
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Answer : 1. "Nuclear force"
Q: Capacity when connecting capacitors to series?
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5ef44a6ed7fe817321989d68- 1neither increases nor decreasesfalse
- 2increasestrue
- 3decreasesfalse
- 4None of the abovefalse
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Answer : 2. "increases"
Explanation :
A capacitor stores energy in the form of an electrostatic field between its plates. Increasing the size of the plates increases the capacitance because there is more room for the electrons to escape.
Q: Which of the following was the first B vitamin discovered in 1897?
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64c38a8666a41f484c1cff4c- 1Folatefalse
- 2Biotinfalse
- 3Riboflavinfalse
- 4Thiaminetrue
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Answer : 4. "Thiamine"
Explanation :
1. The first vitamin discovered in 1897 was thiamine, also known as vitamin B1.
2. Thiamine was discovered by Dutch physician Christiaan Eijkman.
3. Vitamin B1 helps body cells convert carbohydrates into energy and maintain proper functioning of the heart, muscles and digestive system.
Q: From which of the following can Ethanol be obtained?
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5ebcd785828a397cdc60e494- 1Ricefalse
- 2Sunflowerfalse
- 3Sugarcanetrue
- 4Petrolfalse
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