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?
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Choice (4) | Response | |
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a. | ||
b. | ||
c. | ||
d. |
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 | |
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a. | 35 | |
b. | 75 | |
c. | 45 | |
d. | 25 |
Question 3
Question MCQ▾
Calculate the empirical formula for a compound that contains potassium, Chromium and oxygen.
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a. | ||
b. | ||
c. | ||
d. |
Question 4
Question MCQ▾
Which of the following oxide of nitrogen have nitrogen?
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Choice (4) | Response | |
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a. | ||
b. | ||
c. | ||
d. |
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 | |
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a. | ||
b. | 75% | |
c. | 80.03% | |
d. | 20.25% |
Question 6
Question MCQ▾
The crystalline salt on heating loses of mass. The formula of crystalline salt is?
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Choice (4) | Response | |
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b. | ||
c. | ||
d. |
Question 7
Question MCQ▾
Which pair of species has same percentage of carbon?
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Choice (4) | Response | |
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a. | ||
b. | ||
c. | ||
d. |