Q: LASER is abbreviated form of :

A: Light Absorption by Stimulated Emission of Radiation

B: Light Absorption by Steady Emission of Radiation

C: Light Amplification by Stimulated Emission of Radiation

D: Light Amplification by Steady Emission of Radiation



Correct Option: C  [ Light Amplification by Stimulated Emission of Radiation ]

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Q: Nuclear fission is caused by the impact of

A: Neutron

B: Proton

C: Deuteron

D: Electron



Correct Option: A  [ Neutron ]

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Q: A fuse wire has :

A: high resistance and high melting point

B: low resistance and high melting point

C: low resistance and low melting point

D: high resistance and low melting point



Correct Option: D  [ high resistance and low melting point ]

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Q: The highest tides occur at the time of the new moon and the:

A: full moon

B: solar eclipse

C: lunar eclipse

D: volcanoes



Correct Option: A  [ full moon ]

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Q: The hottest part of the gas flame is known as:

A: luminous zone

B: dark zone

C: blue zone

D: non-luminous zone



Correct Option: D  [ non-luminous zone ]

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Q: The purest form of iron is

A: White cast iron

B: Grey cast iron

C: Wrought iron

D: Steel



Correct Option: C  [ Wrought iron ]

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Q: What is the frequency range of audible waves?

A: 20 to 20000 Hz

B: 21000–24000 Hz

C: 25000–30000 Hz

D: 31000–40000 Hz



Correct Option: A  [ 20 to 20000 Hz ]

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Q: An instrument used for measuring depth of an ocean is called?

A: Hydrometer

B: Hygrometer

C: Fathometer

D: Galvanometer



Correct Option: A  [ Hydrometer ]

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Q: 'Mirage' is an example of:

A: refraction of light only

B: total internal reflection of light only

C: refraction and total internal reflection of light

D: dispersion of light only



Correct Option: C  [ refraction and total internal reflection of light ]

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Q: Ramsar Convention is for the conservation of:

A: Mountain

B: Grassland

C: Forest

D: Wetland



Correct Option: D  [ Wetland ]

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