Which of the following is used as a fuel to produce heat energy...? Mcqs

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Which of the following is used as a fuel to produce heat energy...?

(A) Biomass Energy
(B) Solar Energy

(C) Hydro Energy
(D) Wind Energy

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NASA unveils the new Moon suit, which is known formally as____________...?

(A) Exploration Extravehicular Mobility Unit (xEMU)
(B) Spacesuit

(C) Berkut
(D) Non of these

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The speed of the sound in air is ______...?

(A) 143 m/s
(B) 243 m/s

(C) 343 m/s
(D) 443 m/s

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For being able to see three-dimensional pictures we have to use___________...?

(A) A binocular
(B) A camera

(C) A epidiascope
(D) A stereoscope

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Detergents dissolved in water help in cleaning clothes by_________...?

(A) Increasing the temperature of water
(B) Reacting chemically with dirt

(C) Reducing the surface tension of water
(D) Dissolving dirt

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The gonads are the target organ for ______...?

(A) FSH
(B) LH

(C) Both a & b
(D) None of these

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Semiconductors Band Gap...?

(A) Half filled
(B) very wide

(C) partially filled
(D) None of these

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The blueness of the sky is mainly due to _____________...?

(A) The scattering of sunlight by air molecules
(B) The presence of water vapor

(C) Absorption of blue light by the air
(D) Emission of blue light by the atmosphere

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The duration of short-term memory is between:...?

(A) 5 to 15 seconds
(B) 15 to 30 seconds

(C) 30 to 45 seconds
(D) None of these

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The phenomenon of Aurora Borealis, the display of red and green lights in northern hemisphere is due to radiations from____________ ...?

(A) Ionosphere
(B) Troposphere

(C) Mesosphere
(D) Stratosphere

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