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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The sunlight can reach depth of meters in the ocean...?

(A) 100 m
(B) 200 m

(C) 300 m
(D) 400 m

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Sulphur and Nitrogen cause _____...?

(A) Greenhouse Effect
(B) Ozone Layer Depletion

(C) Acid Rain
(D) None of these

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Which base is employed as the electrolyte in alkaline batteries:...?

(A) Calcium hydroxide
(B) Potassium hydroxide

(C) Iron hydroxide
(D) Aluminum hydroxide

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Sun's diameter is...?

(A) 3 million Km
(B) 2.5 million Km

(C) 1.4 million Km
(D) 1.8 million Km

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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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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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Capacitor is used for:...?

(A) Store electrical energy
(B) Vary the resistance

(C) Store magnetic energy
(D) Dissipate energy

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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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Who among the following proposed Laws of planetary motion...?

(A) Roger Bacon
(B) Isaac Newton

(C) Johannes Kepler
(D) Galileo

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