Chemistry - Mock Test 18

Question 171

When halogens are exposed to sunlight, they split up in to ?

A) atoms B) ions C) radicals D) molecules

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Question 172

Cookies and bread rise due to ?

A) conversion of washing soda into CO2 B) conversion of H2O in to CO2 C) conversion of baking soda into O2 D) conversion of baking soda in to CO2

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Question 173

Substance which has formula mass of 133.5 amu is ?

A) MgCl2 B) S2Cl2 C) BCl3 D) AlCl3

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Question 174

Mass of carbon present in 44g of carbon dioxide is ?

A) 12g B) 6g C) 24g D) 44g

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Question 175

Formula which gives simplest whole number ratio of atoms is ?

A) empirical formula B) molecular formula C) chemical formula D) none of above

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Question 176

Matter is anything that occupies ?

A) space B) has mass C) A and B both D) none of above

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Question 177

Mass of 1 mole of sucrose is ?

A) 320g B) 342g C) 341g D) 340g

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Question 178

Branch of chemistry which deals with substance containing carbon is called ?

A) carbon chemistry B) inorganic chemistry C) organic chemistry D) environmental chemistry

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Question 179

Number of atoms in 5 moles of nitrogen atom is ?

A) 3.01 * 1024 B) 4.1 * 1030 C) 3.9 * 1032 D) 5 * 1056

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Question 180

Number of atoms of hydrogen in 2 moles of NH3 ?

A) 5 * 1023 B) 3.01 * 1023 C) 3.61 * 1024 D) 4 * 1023

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