ICSE ICSE Class 8 - CISCE Question Bank Solutions for Chemistry

What do you observe when Iron nail is kept in copper sulphate solution for sometime.

 Multiple Choice Question

Hydrogen is

Give reason .

A person suffering from acidity is advised to take an antacid.

Give reason.

Acidic soil is treated with quick lime.

Give a reason.

Wasp sting is treated with vinegar.

What are oxides ? 

Give reason for Silica gel pouches are kept in unused water bottle.

Give reason On opening a bottle of a cold drink, a fizz sound is heard.

Give balanced chemical equation for the reaction of water with Sodium .

MULTIPLE CHOICE QUESTIONS

The name hydrogen was given by

1. Cavendish
2. Lavoisier
3. Haber
4. none of these

MULTIPLE CHOICE QUESTIONS

Which is the lightest of all elements?

1. hydrogen
2. helium
3. lithium
4. none of these

MULTIPLE CHOICE QUESTIONS

Tick the most appropriate answer.

 Which one of the following alters the rate of the chemical reaction without itself undergoing any change?

1. temperature and Pressure
2. concentration of reactants
3. presence of catalyst
4. none of these

Give balanced chemical equation for the reaction of water with Iron . 

Give balanced chemical equation for the reaction of water with Carbon dioxide.

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In nature, hydrogen occurs as a .................. molecule represented as H2

Give balanced chemical equation for the reaction of water with Sodium oxide.

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The compounds of carbon and hydrogen are called .................

What is metal activity series ?

Name the gas produced when steam is passed over hot coke.

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Hydrogen is present abundantly in the ................