Basic Concepts in Chemistry (NEET (National Eligibility cum Medical Entrance Test) Chemistry): Questions 16 - 19 of 91

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Question number: 16

» Basic Concepts in Chemistry » Empirical and Molecular Formulae

MCQ▾

Question

In acting as a reducing agent, a piece of metal M weighing 16 grams gives up Equation electrons. What is the equivalent weight of the metal?

Choices

Choice (4) Response

a.

42.83

b.

32

c.

83.32

d.

21.33

Question number: 17

» Basic Concepts in Chemistry » Molar Mass

MCQ▾

Question

for a reaction:

Equation

The correct statements is/are

(1) The equivalent mass of Equation is 41.

(2) Equation is the acid salt

(3) Equation is normal salt

(4) 1 mole of H3PO3 is completely neutralized by 1.5 moles of Equation

Select the correct answers and mark it according to the following codes:

Choices

Choice (4) Response

a.

1 and 2 are correct

b.

2 and 4 are correct

c.

1, 2 and 3 are correct

d.

1 and 3 are correct

Question number: 18

» Basic Concepts in Chemistry » Mole Concept

MCQ▾

Question

In the final answer of the expression Equation . The number of significant figures is

Choices

Choice (4) Response

a.

1

b.

2

c.

3

d.

4

Question number: 19

» Basic Concepts in Chemistry » Molar Mass

MCQ▾

Question

Choose the correct statements -

(1) Double decomposition method is based on the law of equivalent.

(2) For a reaction, Equation → products

If amount of Equation reacted = Equation gm and amount of Equation reacted = Equation gm then

Equation = Equation

(3) For a reaction Equation → products

If amount of Equation reacted = Equation gm and amount of Equation reacted = Equation gm then

Equation = Equation

(4) 1 equivalent of oxygen = 16 gm

Select the correct answers and mark it according to the following codes:

Choices

Choice (4) Response

a.

1, 2 and 3 are correct

b.

1 and 2 are correct

c.

1 and 3 are correct

d.

2 and 4 are correct

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