Rain drops fall from great height Which among the following statements is true regarding it...? Mcqs

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Rain drops fall from great height Which among the following statements is true regarding it...?

(A) they fall with that ultimate velocity, which are different for different droplets
(B) they fall with same ultimate velocity

(C) their velocity increases and they fall with different velocity on the earth
(D) their velocity increases and they fall with same velocity on the earth

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A ‘breath test’ used by traffic police to check drunken driving uses ____...?

(A) Turmeric on filter paper
(B) Silica gel coated with silver nitrate

(C) potassium permanganate-sulphuric acid
(D) Potassium dichromatic-sulphuric acid

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Human beings use _______ liters of pure oxygen per day....?

(A) 550
(B) 2500

(C) 1,050
(D) 10,000

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Among the following, which substance is not a compound...?

(A) H2O
(B) Mg

(C) CO2
(D) NaCl

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The theory of Expanding Universe was first propounded by____________...?

(A) Einstein
(B) Newton

(C) Gahleo
(D) Hubble

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Animal with the sharpest hearing ability...?

(A) Rat
(B) Greater wax moth

(C) Bat
(D) Squirrel

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Which help in body’s growth and keeping it healthy...?

(A) Enzymes
(B) Hormones

(C) Fats
(D) Minerals

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Telephone was invented by__________...?

(A) Vint Cerf
(B) Charles Babbage

(C) Edison
(D) Alexander Graham Bell

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

(A) Chemical
(B) Electrical

(C) Light
(D) Kinetic

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___________ begins at 690 to 1,000 km from the surface, and extends to roughly 10,000 km....?

(A) Troposphere
(B) Mesosphere

(C) Exosphere
(D) Stratosphere

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