Speed of sound in air is _______km/h...? Mcqs

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Speed of sound in air is _______km/h...?

(A) 1347
(B) 243

(C) 1235
(D) 1495

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Which of the following pair is incorrect...?

(A) Sparrow : Trumpet
(B) Horse : Neigh

(C) Monkey : Polytities
(D) Owl : Chirp

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The brain of human adult weighs about_________...?

(A) 1200 – 1300 gm
(B) 1600 – 2000 gm

(C) 500 – 800 gm
(D) 100 – 200 gm

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Orbital period of the planet Mercury around the sun is _____________...?

(A) 88 days
(B) 365 days

(C) 2 years
(D) 98 days

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An animal that migrates great distances would obtain the greatest benefit from storing its energy as ____...?

(A) Fats
(B) Carbohydrates

(C) Protein
(D) Minerals

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The Proportion of Hydrogen to Helium in the Sun is________...?

(A) 3:2
(B) 3:1

(C) 1:1
(D) 3:4

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Plants in the garden that are usually pollinated by ______ bear brightly colored flowers....?

(A) Animals
(B) Water

(C) Sunlight
(D) Insects

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Percentage of water in an apple is__________...?

(A) 84%
(B) 90%

(C) 66%
(D) None of these

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The audible range of normal elephant ear is ______...?

(A) 16 Hz to 20kHz
(B) 10 Hz to 31kHz

(C) 67 Hz to 45kHz
(D) 20 Hz to 20kHz

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Who came up with three laws of motion...?

(A) Galileo
(B) Albert Einstein

(C) Issac Newton
(D) Hubble

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