ICSE ICSE Class 8 - CISCE Question Bank Solutions

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

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 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 ................

Name the gas produced when chlorine is dissolved in water and exposed to sunlight.

MULTIPLE CHOICE QUESTIONS

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Reduction reaction is the exact opposite of

1. displacement reaction
2. decomposition reaction
3. oxidation reaction
4. none of these

Name the gas produced when a piece of calcium is added to water.

MULTIPLE CHOICE QUESTIONS

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Which of the following is a reducing agent?

1. oxygen
2. chlorine
3. hydrogen
4. none of these

Name the gas produced when fossil fuel is burnt.

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Ammonia is used to make ................

MULTIPLE CHOICE QUESTIONS

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Reduction is a chemical reaction in which there is

1. removal of hydrogen
2. removal of oxygen
3. addition of oxygen
4. none of these

MULTIPLE CHOICE QUESTIONS

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Compounds, which in their molten state allow an electric current to pass through them are called

1. electrolytes
2. non-electrolytes
3. non-conductors
4. none of these