What is called laughing gas...? Mcqs

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What is called laughing gas...?

(A) Nitrous Oxide
(B) Nitric Oxide

(C) Nitrogen Oxide
(D) Nitrogen Peroxide

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CU is the symbol of which element of the periodic table:...?

(A) Chromium
(B) Copper

(C) Carbon
(D) None of these

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The reaction between an acid and a base is called neutralization reaction, product of this reaction is ______...?

(A) salt and water
(B) acid solution

(C) base solution
(D) water

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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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Which of the following is not a chemical reaction...?

(A) Burning of a paper
(B) Conversion of Water into stream

(C) Digestion of food
(D) Burning of coal

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The acid used in a car battery is:...?

(A) Acetic Acid
(B) Nitric acid

(C) Sulfuric acid
(D) Hydrochloric acid

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Exoskeleton of a marine snail is composed of...?

(A) Calcium Sulphate
(B) Calcium Carbonate

(C) Sulphur Dioxide
(D) None of these

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It is not advisable to sleep under a tree at night because of the release of:...?

(A) more oxygen
(B) less oxygen

(C) Carbon dioxide
(D) Carbon monoxide

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Cooking gas is also called...?

(A) Butane
(B) Hexane

(C) Propane
(D) LPG

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What is the temperature of “Liquid Nitrogen”...?

(A) 0 °C
(B) 37 °C

(C) – 196 °C
(D) None of these

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