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

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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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When the object moves with the speed of light its mass would be...?

(A) equal to its rest mass
(B) double of its rest mass

(C) infinite
(D) Zero Zero

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Which of the following is the most important factor in causing mass movements...?

(A) Temperature
(B) Pressure

(C) Water content
(D) Bulk composition

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A ball thrown vertically upwards, on reaching its highest point its value of acceleration due to gravity would be...?

(A) 9.8 m/s downwards
(B) 9.8 m/s upwards

(C) 0.8 m/s vertical
(D) None of these

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constellation is...?

(A) Classification of stars satellites
(B) Classification of stars

(C) patterns or groups of stars in the sky
(D) patterns or groups of satellites in the sky

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The force with which the earth attracts a body towards itself is called...?

(A) Magnetic Force
(B) Weight

(C) Mass
(D) Electric force

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Dynamite was discovered by...?

(A) Daimler
(B) Mosley

(C) Alfred Nobel
(D) Freud

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Radioactivity measured by which device:...?

(A) Radioactivity meter
(B) Geiger counter

(C) Roll counter
(D) None of these

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Dr Abdus Salam was awarded Nobel Prize having work on which basic forces...?

(A) Electromagnetic and Molecular
(B) Electromagnetic and Electromotive

(C) Weak and Electro Magnetic
(D) None of these

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What is the boiling point of water...?

(A) 60 °C
(B) 80 °C

(C) 100 °C
(D) 120 °C

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