Which gas present in the Earth's atmosphere can absorb solar ultraviolet radiation...? Mcqs

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Which gas present in the Earth's atmosphere can absorb solar ultraviolet radiation...?

(A) Oxygen
(B) Ozone

(C) Carbon dioxide
(D) Nitrogen

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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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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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Tianwen-1 mission of China is related to_________...?

(A) Mars
(B) Jupiter

(C) Sun
(D) Moon

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Phases of the moon occur because...?

(A) only that part of the moon which reflects light
(B) Our distance from the moon keeps changing

(C) The thickness of the moon's atmosphere
(D) The shadow of the Earth covers only a part of moon

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When light passes from one medium to another, this phenomenon of change in its direction is called:...?

(A) Refraction
(B) Reflection

(C) Diffraction
(D) Propagation

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Which area is known as World's earthquake belt...?

(A) Pacific ring of fire
(B) Andes Range

(C) Sharm el Sheikh , Egypt
(D) Central and Atlantic Ridge

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The luminous body emits ______...?

(A) Light
(B) Energy

(C) Waves
(D) None of these

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A rocket needs the speed of .......... to escape from earth's gravity...?

(A) 22 miles per second
(B) 15 miles per second

(C) 12 miles per second
(D) 7 miles per second

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