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) 10 to 20
(B) 20 to 30

(C) 30 to 40
(D) 40 to 50

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A glass chimney stops an oil lamp from smoking because:...?

(A) It increases the supply of oxygen to the flame by convection
(B) The heat produced ensures complete

(C) Both to these
(D) Neither of these

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A chronometer meter measures __________ ...?

(A) Water waves
(B) Color contrast

(C) Time
(D) Sound waves

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The Analytical Chemistry deals with instruments and methods to ______ identify and quantify the matter....?

(A) Mix
(B) Separate

(C) Differentiate
(D) Manipulate

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During night plants give out more ______...?

(A) Carbon Dioxide
(B) Oxygen

(C) Hydrogen
(D) Nitrogen

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Ozone layer thickness is measured in____________...?

(A) Metre
(B) Joule

(C) Pounds
(D) Dobson

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The period in which earth has completes a day is...?

(A) Solar day
(B) Lunar day

(C) Sidereal day
(D) Terrestrial day

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What does "dehydration" mean...?

(A) Addition of water
(B) Removal of water

(C) Conversion of water into vapor
(D) Absorption of water

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Fertilization are used to fill ______ requirements of plants....?

(A) Water
(B) Nutritional

(C) Space
(D) Light

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Scientist discovered a previously undetected feature of the human Anatomy that could be the largest organ of human body...?

(A) Brass
(B) Pectora

(C) Interstitium
(D) Otic

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