The blue colour of the clear sky is due to...? Mcqs

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The blue colour of the clear sky is due to...?

(A) Refraction of light
(B) Reflection of light

(C) Diffraction of light
(D) scattering of light

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Fiber optics technology is being used in...?

(A) Telecommunication
(B) Electrical power control monitoring

(C) Oil and gas pipelines control and monitoring
(D) All Of Above

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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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Every action has reaction which are equal but in opposite direction, This law is called...?

(A) Newton's First Law of motion
(B) Newton's Second Law of motion

(C) Newton's Third Law of motion
(D) None of these

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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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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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If there is no Sun, The color of the sky would be ...?

(A) Orance
(B) Blue

(C) Yellow
(D) None of these

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Rocket propulsion is based on...?

(A) Einstein's Theory of Relativity
(B) Newton's second law of motion

(C) Newton's third law of motion
(D) None of these

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Which of the following is associated with Einstein...?

(A) Radio activity
(B) Theory of Relativity

(C) Rocket Propulsion
(D) Quantum Theory

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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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