In which of the following, speed of the sound is maximum...? Mcqs

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In which of the following, speed of the sound is maximum...?

(A) Gold
(B) Sea water

(C) Air
(D) Space

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The Gas is mobile phase in ______...?

(A) Liquid chromatography
(B) Solid chromatography

(C) Gas chromatography
(D) None of these

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Which of the following cells are Colourless...?

(A) Red blood cells
(B) White blood cells

(C) Monocytes
(D) platelets

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In night, when photosynthesis is stopped, plants__________...?

(A) take in Carbon Dioxide
(B) give off Oxygen

(C) give off Carbon Dioxide
(D) None of these

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1 Coulomb = ___________ e....?

(A) 6×10-19
(B) 6.25×1018

(C) 1.6×1019
(D) 6.25×10-18

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Seedless vascular plants are...?

(A) Bryophytes
(B) Gymnosperms

(C) Pteridophytes
(D) None of these

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Seeds is produced by ___...?

(A) pollen tube
(B) thalamus

(C) ovules
(D) none of these

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A D.C motor converts _______...?

(A) Mechanical energy into electrical energy
(B) Mechanical energy into chemical energy

(C) Electrical energy into mechanical energy
(D) Electrical energy into chemical energy

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A Reflecting telescope consists of _____...?

(A) A primary lens and A secondary lens
(B) A primary lens and A secondary mirror

(C) A primary and A secondary mirror
(D) A primary mirror and A secondary lens

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The cathode ray carry ______...?

(A) Positive charge
(B) Neutral

(C) Negative charge
(D) Positrons

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