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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The boiling point of water depends upon the:...?

(A) Atmospheric pressure
(B) Mass

(C) Density
(D) Volume

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Electron was discovered by:...?

(A) Rutherford
(B) J.J Thomson

(C) James Chadwick
(D) None Of These

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Silicon is also called...?

(A) Stone Maker
(B) Ocean Maker

(C) A&B
(D) Mountain Maker

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Huge Cloud of gas and dust in universe is called...?

(A) Chromosphere
(B) Photosphere

(C) Nebula
(D) Lonosphere

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Which is the largest planet...?

(A) Venus
(B) Earth

(C) Jupiter
(D) Mars

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A chronometer measure:...?

(A) Sound waves
(B) Time

(C) Color contrast
(D) Water wavės

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White light passing through the prism splits into_______...?

(A) 4
(B) 5

(C) 6
(D) 7

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Acceleration caused by gravity is...?

(A) 23 Feet per second square
(B) 32 Feet per second square

(C) 42 Feet per second square
(D) 52 Feet per second square

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Who is credited for discovery of Planetry motion___...?

(A) Nicolaus Copernicus
(B) Darwan

(C) Kepler
(D) None

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