Hydrogen and s - block Elements — Important Questions
Telangana Open School (TOSS) · Class 12 · Chemistry
46 important questions from Hydrogen and s - block Elements for Telangana Open School (TOSS) Class 12 Chemistry, with answers.
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Important Questions from Hydrogen and s - block Elements
Which of the following is a use of hydrogen?
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Making ammonia
Hydrogen is used in the Haber process to manufacture ammonia.
Which alkali metal forms only monoxide when burned in air?
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Lithium
Lithium forms only lithium oxide (Li₂O) on combustion in air.
What is the oxidation state of oxygen in hydrogen peroxide?
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-1
In H₂O₂, oxygen has an oxidation state of -1, intermediate between O₂ (0) and H₂O (-2).
Which of the following is a use of heavy water?
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As a moderator in nuclear reactors
Heavy water slows down neutrons in nuclear reactors and is used as a moderator.
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