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#10 | Equivalent Concept
(Chemistry) > Some Basic Concepts Of Chemistry
Related Practice Questions :

A metal M forms a compound M2HPO4. The formula of the metal suphate is:

(a) M2SO4

(b) MSO4

(c) M(SO4${\right)}_{2}$

(d) M2(SO4)3

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The oxide of a metal contains 40% by mass of oxygen. The percentage of chlorine in the chloride of the metal is [BIT Ranchi 1997]

(1) 84.7

(2) 74.7

(3) 64.7

(4) 44.7

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Copper forms two oxides. For the same amount of copper, twice as much oxygen was used to form first oxide than to form second one. What is the ratio of the valencies of copper in first and second oxides?

1. 2:5

2. 1:6

3. 2:1

4. 1:2

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The vapour density of a volume chloride of a metal is 95 and the specific heat of the metal is 0.13 cal/g. The equivalent mass of the metal will be:

1.  6

2.  12

3.  18

4.  24

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Read the following statements (S) and Explanation (E). Choose the correct answers from the codes (1), (2), (3) and (4):

S : An element may have variable equivalent mass.

E : Such elements should possess variable valency.

1.  S is correct but E is wrong
2.  S is wrong but E is correct
3.  Both S and E are correct and E is correct explanation of S
4.  Both S and E are correct but E is not correct explanation of S

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