Basic Concepts in Chemistry (NEET Chemistry): Questions 4 - 9 of 24

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Question number: 4

» Basic Concepts in Chemistry » Molar Mass

MCQ▾

Question

The equivalent weight of a metal is 36. What weight of the metal would give 9.322 gm of its chloride?

Choices

Choice (4) Response

a.

1.6935 gm

b.

4.6935 gm

c.

3.6935 gm

d.

2.6935 gm

Question number: 5

» 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: 6

» 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: 7

» 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: 8

» 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: 9

» Basic Concepts in Chemistry » Mole Concept

Assertion-Reason▾

Assertion (Ꭺ)

Equivalent weight of Cu in CuO is 31.8 and in Cu2O is 63.6.

Reason (Ꭱ)

Equivalent weight of an element

AtomicweightoftheelementValencyoftheelement

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

b.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

c.

Ꭺ is true but Ꭱ is false

d.

Ꭺ is false but Ꭱ is true

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