Solid can be converted directly to the gaseous state. This process is known as:...? Mcqs

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Solid can be converted directly to the gaseous state. This process is known as:...?

(i) Sublimation
(ii) Evaporation

(iii) Condensation
(iv) Diffusion

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The Third Most abundant element is:...?

(i) Oxygen
(ii) Silicon

(iii) Aluminium
(iv) None ofthese

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Bronze is an alloy of...?

(i) Copper and Bronze
(ii) Lead and Tin

(iii) Copper and Tin
(iv) None of these

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

(i) Calcium Sulphate
(ii) Calcium Carbonate

(iii) Sulphur Dioxide
(iv) None of these

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What is a mixture of potassium nitrate Charcoal and Sulphur called...?

(i) Paint
(ii) Aluminum

(iii) Brass
(iv) Gunpowder

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

(i) more oxygen
(ii) less oxygen

(iii) Carbon dioxide
(iv) Carbon monoxide

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The pH of milk is...?

(i) 6
(ii) 6 point 7

(iii) 7
(iv) 7 point 5

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Which of the following is the least polluted gas...?

(i) Carbon
(ii) Nitrogen

(iii) Chlorine
(iv) None of these

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

(i) Burning of a paper
(ii) Conversion of Water into stream

(iii) Digestion of food
(iv) Burning of coal

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Cooking gas is mixture of which of the following two gases...?

(i) Methane & Carbon dioxide
(ii) Oxygen & Nitrogen

(iii) Butane & Propane
(iv) Oxygen & Methane

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