Which of the following is not the source of carbon dioxide emission...? Mcqs

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Which of the following is not the source of carbon dioxide emission...?

(A) Burning of fossil fuels, wood, cool
(B) Solar power

(C) Respiration
(D) Car exhaust smoke

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The time taken by Sun to revolve around the center of our galaxy is___________...?

(A) 150 million years
(B) 250 million years

(C) 300 millon years
(D) 350 millon years

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The volume of Blood in a Human body to be approximately _________ of body weight...?

(A) 6%
(B) 7%

(C) 8%
(D) 9%

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A communication satellite completes its one revolution around the Earth in ______ hours....?

(A) 6
(B) 12

(C) 18
(D) 24

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Which one of the following statements is false about dynamic equilibrium...?

(A) It takes place in a close container
(B) Concentration of reactant and products are not changed

(C) Rate of forward reaction is equal to rate of reverse reaction
(D) Equilibrium cannot be disturbed by any external stress

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Analytical solutions to Quadratic equations were introduced by__________...?

(A) Al-Khawarzimi
(B) Al-haitham

(C) IsasacNewton
(D) Pythagoras

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A method of removing suspended sand particles and insoluble physical impurities from water is known as...?

(A) Sedimentation
(B) Filtration

(C) Distillation
(D) Chlorination

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Water at 4 degrees centigrade has...?

(A) Minimum density
(B) Maximum density

(C) No density
(D) None of these

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How many light years the earth and sun are away from the center of Milky Way galaxy...?

(A) 27000
(B) 23000

(C) 20000
(D) 25000

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Which of the following is the SI unit of volume...?

(A) Meter cube
(B) Cm cube

(C) mm cube
(D) Km cube

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