Plants absorb____during day time to prepare their food....? Mcqs

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Plants absorb____during day time to prepare their food....?

(A) Carbon Dioxide
(B) Oxygen

(C) Nitrogen
(D) Hydrogen

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Air contains volume of carbon dioxide approximately...?

(A) 3%
(B) 33%

(C) 0.3%
(D) 0.03%

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During the daytime for the photosynthesis, plants require ______...?

(A) O2
(B) N2

(C) CO2
(D) H2

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Who invented bifocal eyeglasses...?

(A) Ibn-e-Haitem
(B) Benjamin Franklin

(C) Archemedes
(D) None

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Which of the following allows all light to pass through it...?

(A) Book
(B) Air

(C) Wood
(D) Newspaper

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In a normal human body, the total number of red blood cells is ________...?

(A) 15 trillion
(B) 20 trillion

(C) 25 trillion
(D) 30 trillion

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As temperature increases, initially the rate of reaction will _____...?

(A) Decrease
(B) Remain constant

(C) Fluctuate
(D) Increase

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According to Einsteins general theory of relativity the universe:________________...?

(A) Must be expanding
(B) Must be contracting

(C) Must be either expanding or contracting
(D) Must be neither expanding nor contracting

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MMR vaccines are given to children to develop resistance against ____...?

(A) Malaria
(B) TB

(C) Measles
(D) Hepatitis

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_____ species are given scientific names....?

(A) All
(B) Some

(C) Few
(D) None

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