Basic Concepts in Chemistry-Empirical and Molecular Formulae (NEET Chemistry): Questions 1 - 6 of 9

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Question number: 1

» Basic Concepts in Chemistry » Empirical and Molecular Formulae

MCQ▾

Question

5.70 gm of metal carbonate was dissolved in 50ml of 2 (N) HCL . The excess acid was neutralized by 10 ml of 1 (N) NaCl . What is the equivalent wt. of metal?

Choices

Choice (4) Response
a.

19

b.

30

c.

33.33

d.

40

Question number: 2

» Basic Concepts in Chemistry » Empirical and Molecular Formulae

MCQ▾

Question

What weight of H2C2O4.2H2O (mol. wt. =126) should be dissolved to prepare 250 ml of semi normal to be used as a reducing agent?

Choices

Choice (4) Response
a.

0.1575 gm

b.

0.63 gm

c.

0.875 gm

d.

0.126 gm

Question number: 3

» Basic Concepts in Chemistry » Empirical and Molecular Formulae

MCQ▾

Question

In acting as a reducing agent, a piece of metal M weighing 20 grams gives up 3.30×1023 electrons. What is the equivalent weight of the metal?

Choices

Choice (4) Response
a.

36.50

b.

83.32

c.

32

d.

42.83

Question number: 4

» Basic Concepts in Chemistry » Empirical and Molecular Formulae

MCQ▾

Question

The equivalent wt. of a metal is double that of oxygen. How many times is weight of its oxide greater than the wt. of metal?

Choices

Choice (4) Response
a.

1.5

b.

0.25

c.

3

d.

2

Question number: 5

» Basic Concepts in Chemistry » Empirical and Molecular Formulae

MCQ▾

Question

10 ml of (N/2) HCL , 30 ml of ( N10 ) HNO3 and 75 ml of ( N5 ) HNO3 are mixed; the normality of H+ in the resulting solution is-

Choices

Choice (4) Response
a.

0.2

b.

0.25

c.

0.5

d.

0.1

Question number: 6

» Basic Concepts in Chemistry » Empirical and Molecular Formulae

MCQ▾

Question

6.90 gm of a metal carbonate were dissolved in 60 ml of 2 (N) HCL . The excess acid was neutralized by 20 ml of 1 (N) NaOH . What is the equivalent wt. of metal?

Choices

Choice (4) Response
a.

19

b.

20

c.

40

d.

39

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