Question

85. A metal chloride contains 80% chlorine. Equivalent weight of the metal is

a) 9 b) 7 c) 6 d) 12

86. Equivalent weight of a metal is 4. Vapour density of its chloride is 59.25. Its atomic

weight is

a) 8 b) 24 c) 12 d) 36

87. Mass one atom of magnesium ( 24) is

a) 4 x 10-23 g b) 6 x 1023 g c) 24 g d) 6 x 10-23

88. Which of the following gas weight more at STP

a) 1 litre of H2 b) 1 litre of O2 c) 1 litre of N2 d) 1 litre of Cl2

89. Number of g atoms of S present in 49 g of H2SO4

a) 1 b) 16 c) 32 d) 0.5

90. Caffeine has a molecular weight of 194. If it contains 28.9% by mass of

nitrogen,number of atoms of nitrogen in one molecule of caffeine is

a) 4 b) 6 c) 2 d) 3​

Answer 1

Answer:

Explanation:

Percentage metal =0.2

Percentage chlorine = 0.8

0.8x - 35.5

0.2x - 8.875 gm