ICSE ICSE Class 8 - CISCE Question Bank Solutions

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

FILL IN THE BLANK

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

FILL IN THE BLANK

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

FILL IN THE BLANK

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

FILL IN THE BLANK

........................ 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?

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

Give a test to identify hydrogen ?

Give a test to identify hydrogen ?

What are thermal decomposition reactions ? Explain with an example.

What do you mean by redox reaction ? Explain with the help of an example.

State the poisonous nature of carbon monoxide?

How would you show that hydrogen is lighter than air?

How would you show that hydrogen is lighter than air?