ICSE ICSE Class 8 - CISCE Question Bank Solutions for Chemistry

Name the chemicals required to prepare hydrogen gas in the laboratory.

Name the chemicals required to prepare hydrogen gas in the laboratory.

Draw a neat and well-labelled diagram for the laboratory preparation of hydrogen.

Draw a neat and well-labelled diagram for the laboratory preparation of hydrogen.

How is hydrogen gas collected? Why?

How is hydrogen gas collected? Why?

How would you show that hydrogen is a non-supporter of combustion?

How would you show that hydrogen is a non-supporter of combustion?

Explain the following type of chemical reaction, giving two examples for it:

Decomposition reaction

How will you obtain  Nitrogen dioxide from lead nitrate.
Also give balanced equations for the reactions

Multiple Choice Question

 In metal activity series the more reactive metals are at

Multiple Choice Question

 In metal activity series the more reactive metals are at

MULTIPLE CHOICE QUESTIONS

Tick the most appropriate answer.

Thermal decomposition of a substance is brought about with the help of

1. reactants
2. water
3. wind
4. heat

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Sodium liberates hydrogen when treated with cold .............

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Sodium liberates hydrogen when treated with cold .............

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........................ zinc is preferred over pure zinc in the laboratory preparation of hydrogen.

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........................ zinc is preferred over pure zinc in the laboratory preparation of hydrogen.

TRUE \ FALSE

Lead reacts briskly with dilute hydrochloric acid to form hydrogen.

TRUE \ FALSE

Lead reacts briskly with dilute hydrochloric acid to form hydrogen.

Why is granulated zinc preferred in the laboratory preparation of hydrogen?