Which gas can be ventilated buildings accumulated in poorly...? Mcqs

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Which gas can be ventilated buildings accumulated in poorly...?

(A) Xenon
(B) Hydrogen

(C) Radon
(D) Helium

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Which gas is known as laughing gas...?

(A) Nitrous oxide N2O
(B) Nitrogen

(C) Methane
(D) None of these

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The most brightest planet is ______...?

(A) Sun
(B) Mercury

(C) Venus
(D) None of these

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The process of emoving water in the form of vapour from theleaves is called:...?

(A) Nutrition
(B) Respiration

(C) Perspiratin
(D) Transpiration

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The freezing point of water on a centigrade scale is...?

(A) 0°C
(B) 1°C

(C) -1°C
(D) 5°C

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The Third Most abundant element is:...?

(A) Oxygen
(B) Silicon

(C) Aluminium
(D) None ofthese

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The most abundant metal in the earth's crust is:...?

(A) Zinc
(B) Copper

(C) Aluminum
(D) Iron

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Bio gas is the common name of...?

(A) Methane (CH₄)
(B) Hydrogen gas

(C) Nitrogen gas
(D) Oxygen gas

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The formula of Quartz is:...?

(A) SiO2
(B) Nacl

(C) SiO4
(D) None of these

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Another name for baking soda is:...?

(A) Sodium Bicarbonate
(B) Sodium Carbonate

(C) Sodium Sulphate
(D) Sodium Hydroxide

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