5mL of NHCl, 20 mL of N/2 H2SO4 and 30mL of N/3 HNO3 are mixed together and volume made one litre. The normality of the resulting solution is:

(a) N/5

(b) N/10

(c) N/20

(d) N/40

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When a metal is burnt, its mass is increased by 24 percent. The equivalent mass of the metal will be:

(a) 25

(b) 24

(c) 33.3

(d) 76

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1g of pure calcium carbonate was found to require 50 mL of dilute HCl for complete reactions. The strength of the HCl solution is given by:

(a) 4N

(b) 2N

(c) 0.4N

(d) 0.2N

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The equivalent mass of H3PO4 in the following reaction is,

H3PO+ Ca(OH)2 CaHPO4 + 2H2O

(a) 98

(b) 49

(c) 32.66

(d) 40

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1.520g of the hydroxide of a metal on ignition gave 0.995 g of oxide. The equivalent mass of metal is:

(a) 1.520

(b) 0.995

(c) 19.00

(d) 9.00

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0.5 g of fuming H2SO4 (oleum) is diluted  with water. This solution is completely neutralised by 26.7 mL of 0.4 N NaOH. The percentage of free SO3 in the sample is:

(a) 30.6% 

(b) 40.6%

(c) 20.6%

(d) 50%

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One g of a mixture of Na2CO3 and NaHCO3 consumes y equivalent of HCl for complete neutralisation. One g of the mixture is strongly heated, then cooled and the residue treated with HCl. How many equivalent of HCl would be required for complete neutralisation?

(a) 2y equivalent

(b) y equivalent

(c)  3y/4 equivalent

(d) 3y/2 equivalent

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The chloride of a metal contains 71% chlorine by mass and the vapour density of it is 50. The atomic mass of the metal will be:

(a) 29

(b) 58

(c) 35.5

(d) 71

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The equivalent mass of Zn(OH)2 in the following reaction is equal to its,

Zn(OH)2 + HNO3 Zn(OH)(NO3) + H2O :

(a) Formula mass/1

(b) Formula mass/2

(c) 2 x formula mass

(d) 3 x formula mass

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What will be the normality of a solution obtained by mixing 0.45 N and 0.60 N NaOH in the ratio 2:1 by volume?

(a) 0.4 N

(b) 0.5 N

(c) 1.05 N

(d) 0.15 N

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