Which statement about sound is true...? Mcqs

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Which statement about sound is true...?

(A) Sound can’t travel through  vacuum
(B) Sound can’t travel through  glass

(C) Sound can’t travel through  water
(D) Non of theses

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It is observed that the total pressure exerted by air on the man of average size is around 14.7 lb wt. per square inch. But the man feels quite comfortable,. It is because of__________...?

(A) An equal and opposite pressure acts from inside
(B) of the height of a man

(C) of gravity
(D) Earth pulls the man upward

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What is the photometer...?

(A) Testing picture Quality
(B) Measuring light Intensity

(C) Measuring Size of Picture
(D) Checking colors and Pictures

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Which of the following is the SI unit of volume...?

(A) Meter cube
(B) Cm cube

(C) mm cube
(D) Km cube

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Diameter of Sun is_____________...?

(A) 12 Lakh kms
(B) 13 Lakh kms

(C) 14 Lakh kms
(D) 15 Lakh kms

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A voltmeter is always connected in a circuit in ____...?

(A) Series
(B) Parallel

(C) Both A and B
(D) None

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Carbon dioxide dissolution in water, actually represents solute and solvent combination of _____...?

(A) Liquid-liquid solution
(B) Solid-liquid solution

(C) Gas-liquid solution
(D) Solid-solid solution

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When oil and gas resources are burnt they kill many forests and lakes by ________________ ...?

(A) deforestation
(B) water pollution

(C) acid rain
(D) forest fire

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In a concave mirror, the image size depends upon _____...?

(A) Size of the object
(B) Area covered by the object

(C) Position of the object
(D) The shape of the object

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What Color does chlorophyll not absorb...?

(A) Red
(B) Blue

(C) Green
(D) Yellow

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