Lakhmir Singh's Science - Chemistry>Chapter 7 - Hydrogen>EXERCISES>Q 5

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How can you prove that hydrogen is lighter than air?

Important Questions on Hydrogen

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Lakhmir Singh's Science - Chemistry>Chapter 7 - Hydrogen>Test Your Understanding>Q 1

Complete the following equation:

H_{2} +_____\to 2 HCl

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Lakhmir Singh's Science - Chemistry>Chapter 7 - Hydrogen>Test Your Understanding>Q 3

Complete the following equation:

3 Fe + 4 H_{2} O \to_____+_____

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Lakhmir Singh's Science - Chemistry>Chapter 7 - Hydrogen>Test Your Understanding>Q 4

Complete the following equation:

C + H_{2} O \to_____

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Lakhmir Singh's Science - Chemistry>Chapter 7 - Hydrogen>EXERCISES>Q 7

Explain the laboratory preparation of hydrogen.

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Lakhmir Singh's Science - Chemistry>Chapter 7 - Hydrogen>WORKSHEET>Q 1

Give reason for the following.

Reaction between $PbO$ and hydrogen is a redox reaction.

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Lakhmir Singh's Science - Chemistry>Chapter 7 - Hydrogen>WORKSHEET>Q 4

Give reason for the following.

Dilute $HCl$ or dilute $H_{2} {SO}_{4}$ is used in preparation of hydrogen.

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Lakhmir Singh's Science - Chemistry>Chapter 7 - Hydrogen>WORKSHEET>Q 4

Complete the following reaction.

$Zn + H_{2} {SO}_{4} \to$

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Lakhmir Singh's Science - Chemistry>Chapter 7 - Hydrogen>WORKSHEET>Q 5

Complete the following reaction.

$H_{2} S + {Cl}_{2} \to$