The main cause of air pollution is __________...? Mcqs

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The main cause of air pollution is __________...?

(A) Burning Of Fuels
(B) Forests

(C) Fertilizers
(D) None of these

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A crescograph is a device for measuring the growth in __________...?

(A) Micro Organism
(B) Plants

(C) Human
(D) Pollution

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Main constituent in air is ___________...?

(A) Oxygen
(B) Nitrogen

(C) Hydrogen
(D) Helium

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Yeast is used in making bread because it produces____________...?

(A) Carbon dioxide
(B) Sugar

(C) Bacteria
(D) Oxygen

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What is not a cause of air pollution...?

(A) Burning of fuel
(B) Burning of solid waste

(C) Coal
(D) Water from domestic use

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Vitamin A is found in the____________...?

(A) Green vegetables
(B) white vegetables

(C) Yellow vegetables
(D) Red vegetables

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Smoke is an solution of _________...?

(A) Solid in solid
(B) Solid in liquid

(C) Solid in gas
(D) Gas in gas

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Copper is used in the production of___________...?

(A) Brick kilns
(B) Children toys

(C) Kitchen utilities
(D) Electric wires

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German Silver is an alloy of___________...?

(A) Zn + Ni
(B) Cu + Zn

(C) Cu + Ni
(D) Cu + Sn

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Magnalium is an alloy of_____________...?

(A) Magnesium and Lead
(B) Aluminium and Zinc

(C) Aluminium and Magnesium
(D) Aluminium and Mercury

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