Which from the following is true for "Sound"...? Mcqs

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Which from the following is true for "Sound"...?

(A) Sound cannot travel through a vacuum
(B) Sound cannot travel through gases

(C) Sound cannot travel through liquids
(D) Sound cannot travel through solids

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The ozone layer is at height of _________kilometers from the surface of the Earth....?

(A) 45-40 kilometers
(B) 35-40 kilometers

(C) 15-40 kilometers
(D) reflects back radio waves

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Which of the following colours are primary colours...?

(A) Red, Blue , Green
(B) Red, Blue , black

(C) Red, Blue , White
(D) Red, Blue , Orance

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The Planet with shortest daytime is...?

(A) Saturn
(B) Jupiter

(C) Neptune
(D) Mars

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When one acted as moderator in nuclear reactor...?

(A) Regular Water
(B) Graphite

(C) Heavy Water
(D) All Of Above

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What is the time taken by sunlight to reach the earth...?

(A) 8 minutes
(B) 8 minutes 20 seconds

(C) 8 minutes 30 seconds
(D) 9 minutes

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Acceleration caused by gravity is...?

(A) 23 Feet per second square
(B) 32 Feet per second square

(C) 42 Feet per second square
(D) 52 Feet per second square

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Why is the Ozone important for mankind...?

(A) Protection from ultraviolet rays of sun
(B) It releases oxygen in the air

(C) It maintains temperature of the earth
(D) It releases hydrogen in the atmosphere

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The first Canadian woman in space was...?

(A) Roberta Bonder
(B) Dirk Fremont

(C) Roberta Bondar
(D) marc Garneau

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Electrons were discovered by...?

(A) Alarm Burg
(B) JC Bose

(C) JJ Thomson
(D) Christopher Columbus

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