Why is the Ozone important for mankind...? Mcqs

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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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Which is the Hottest planet of the world...?

(A) Mercury
(B) Jupiter

(C) Venus
(D) Mars

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A pinhole camera consists of ____ lens:...?

(A) 0
(B) 1

(C) 2
(D) 3

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The book “A Brief History of Time” is written by...?

(A) Aristotle
(B) Oswald Spengler

(C) Stephen Hawking
(D) Karl Marx

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What are Newton's used to measure...?

(A) Force
(B) Volcano

(C) Earthquack
(D) Tsunami

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In the atmosphere, if the temperature is low then the pressure is ____...?

(A) Low
(B) High

(C) Normal
(D) All of these

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The lowest zone of atmosphere containing about seventy five percent of total mass of atmosphere and ninety percent of its water vapour is called...?

(A) Troposphere
(B) Lonosphere

(C) Aerosphere
(D) Stratosphere

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Thomas Edison is famous for his invention of:...?

(A) Telephone
(B) Television

(C) Light Bulb
(D) None of these

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Bakelite is a:...?

(A) Conductor
(B) Insulator

(C) Semiconductor
(D) None of these

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Acoustics is the science of

(A) Light
(B) Waves

(C) Sound
(D) Colours

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