Basic Concepts in Chemistry-Percentage Composition [BITSAT (Birla Institute of Technology & Science Admission Test) Chemistry]: Questions 1 - 7 of 7

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Question 1

Question MCQ▾

Hydrogen and oxygen are combined in the ratio by mass in hydrogen peroxide. Calculate the percentage of hydrogen and oxygen in hydrogen peroxide?

Choices

Choice (4)Response

a.

b.

c.

d.

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Question 2

Question MCQ▾

On analysis of an impure sample of sodium chloride, the percentage was found to be . What is the percentage of pure sodium chloride in the given sample?

Choices

Choice (4)Response

a.

35

b.

75

c.

45

d.

25

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Question 3

Question MCQ▾

Calculate the empirical formula for a compound that contains potassium, Chromium and oxygen.

Choices

Choice (4)Response

a.

b.

c.

d.

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Question 4

Question MCQ▾

Which of the following oxide of nitrogen have nitrogen?

Choices

Choice (4)Response

a.

b.

c.

d.

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Question 5

Question MCQ▾

A gas mixture contains helium and methane by volume. What is the percentage by mass of methane mixture?

Choices

Choice (4)Response

a.

b.

75%

c.

80.03%

d.

20.25%

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Question 6

Question MCQ▾

The crystalline salt on heating loses of mass. The formula of crystalline salt is?

Choices

Choice (4)Response

a.

b.

c.

d.

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Question 7

Question MCQ▾

Which pair of species has same percentage of carbon?

Choices

Choice (4)Response

a.

b.

c.

d.

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