Q. Which of the following is a property of heavy water (D2O)?
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A.
It is lighter than regular water
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B.
It has a higher boiling point than regular water
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C.
It is more reactive than regular water
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D.
It is less dense than regular water
Solution
Heavy water (D2O) has a higher boiling point than regular water (H2O).
Correct Answer: B — It has a higher boiling point than regular water
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Q. Which of the following is a property of heavy water?
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A.
It is lighter than regular water
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B.
It has a higher boiling point than regular water
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C.
It is more reactive than regular water
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D.
It is less dense than regular water
Solution
Heavy water (D2O) has a higher boiling point than regular water (H2O).
Correct Answer: B — It has a higher boiling point than regular water
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Q. Which of the following is a property of hydrogen chloride (HCl)?
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A.
It is a gas at room temperature
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B.
It is a strong base
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C.
It is insoluble in water
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D.
It has a high boiling point
Solution
Hydrogen chloride (HCl) is a gas at room temperature and is highly soluble in water.
Correct Answer: A — It is a gas at room temperature
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Q. Which of the following is a property of hydrogen chloride gas?
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A.
It is a strong base
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B.
It is a colorless gas
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C.
It is insoluble in water
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D.
It is a non-polar molecule
Solution
Hydrogen chloride (HCl) is a colorless gas that is soluble in water.
Correct Answer: B — It is a colorless gas
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Q. Which of the following is a property of hydrogen gas?
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A.
It is a good conductor of electricity
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B.
It is colorless and odorless
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C.
It is denser than air
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D.
It supports combustion
Solution
Hydrogen gas is colorless and odorless.
Correct Answer: B — It is colorless and odorless
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Q. Which of the following is a property of hydrogen?
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A.
It is a metal
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B.
It is a non-metal
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C.
It is a noble gas
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D.
It is a liquid at room temperature
Solution
Hydrogen is classified as a non-metal.
Correct Answer: B — It is a non-metal
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Q. Which of the following is not a hydrogen compound?
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A.
H2O
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B.
NH3
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C.
CH4
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D.
CO2
Solution
Carbon dioxide (CO2) is not a hydrogen compound as it does not contain hydrogen.
Correct Answer: D — CO2
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Q. Which of the following is not a property of hydrogen?
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A.
Colorless
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B.
Odorless
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C.
Highly soluble in water
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D.
Lightest element
Solution
Hydrogen is not highly soluble in water; it is actually sparingly soluble.
Correct Answer: C — Highly soluble in water
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