A loudspeaker changes _________ energy into sound energy....? Mcqs

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A loudspeaker changes _________ energy into sound energy....?

(A) Chemical
(B) Electrical

(C) Light
(D) Kinetic

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Movement of earth material as a unit along a curved surface is called...?

(A) Slump
(B) Mud out

(C) Lava
(D) None of these

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The cathode ray carry ______...?

(A) Positive charge
(B) Neutral

(C) Negative charge
(D) Positrons

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Weather and climate are driven by what source(s) of energy ...?

(A) Earth’s internal heat
(B) Solar radiation

(C) Gravity
(D) Both (a) and (c)

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Recapitulation of biogenetic law was given by:...?

(A) Darwin
(B) Lamarck

(C) Haeckel
(D) Mendel

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The gases which are used by drivers as an artificial atmosphere are helium and_____________...?

(A) Nitrogen
(B) Oxygen

(C) Neon
(D) Carbon monoxide

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How many hearts an Octopus has...?

(A) 10
(B) 8

(C) 5
(D) 3

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A Periscope uses two plane mirrors one above the other at ____...?

(A) 30°
(B) 45°

(C) 60°
(D) 90°

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The moon’s surface is constantly bombarded by...?

(A) Comets
(B) UV light

(C) Meteoroids
(D) All of the above

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Red + Green + Blue = ________...?

(A) Maroon
(B) White

(C) Black
(D) None of the above

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