The process by which a substance absorbs moisture upon exposure to atmosphere is called:...? Mcqs

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The process by which a substance absorbs moisture upon exposure to atmosphere is called:...?

(i) Deliquescence
(ii) Efflorescence

(iii) Dehydrogenation
(iv) Desalination

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

(i) 0°C
(ii) 1°C

(iii) -1°C
(iv) 5°C

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اوزون لیئر کو سب سے ذیادہ نقصان کون سا مادہ کرتا ہے۔۔۔؟

(i) سلفر
(ii) زنگ

(iii) ہائیڈروجن
(iv) کاربن

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Ascorbic acid is...?

(i) Vitamin A
(ii) Vitamin C

(iii) Vitamin D
(iv) non of these

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What is called laughing gas...?

(i) Nitrous Oxide
(ii) Nitric Oxide

(iii) Nitrogen Oxide
(iv) Nitrogen Peroxide

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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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Which is the first element depicted on the Periodic Table...?

(i) Hydrogen
(ii) Aluminum

(iii) Oxygen
(iv) Gold

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What is the most abundant element in the universe...?

(i) Hydrogen
(ii) Oxygen

(iii) Sodium
(iv) Copper

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What is the first element in the periodic table?...?

(i) Hydrogen
(ii) Helium

(iii) Nitrogen
(iv) Carbon

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Which Muslim Scientist is considered to be the founder of chemistry...?

(i) Ibn Al Nafees
(ii) Jabir ibn Hayyan

(iii) Abu Nasr Al-Farabi
(iv) None of these

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