Thermal Decomposition

Q.

Explain different types of decomposition reaction

Q.

Give one example of a decomposition reaction which is carried out;

With electricity.

Q.

Give an example of a reaction that requires light.

Q.

Indicate the type of the following reaction :

${\mathrm{CaCO}}_3\to \mathrm{CaO}+{\mathrm{CO}}_2$

Q.

Give one example each of the various kinds of decomposition reactions.

Q.

Name:

(a) A carbonate which does not decompose on heating.

(b) A nitrate which produces oxygen as the only gas.

(c) A compound which produces carbon dioxide on heating

(d) A nitrate which produces brown gas on heating.

Q.

In the given experiment, on heating lead nitrate powder in a boiling test tube, we observe brown fumes. The emission of brown coloured fumes is due to formation of:

1. Lead Nitrate

2. Lead Oxide

3. Nitrogen Dioxide

4. Nitrogen Oxide

Q.

Decomposition brought about by heat is known as thermal decomposition. What is the difference between thermal dissociation and thermal decomposition?

Q.

When lead nitrate is heated, the colour of $\mathrm{PbO}$ and ${\mathrm{NO}}_2$ observed is respectively

1. yellow and colourless

2. colourless and brown

3. yellow and brown

4. green and brown

Q.

Hydrolysis of water is a _______ reaction.

1. Endothermic

2. Both (a) and (b)

3. Combination

4. Decomposition

Q.

A thermal decomposition reaction is called pyrolysis.

1. True
2. False

Q.

Potassium chlorate on heating gives potassium chloride and oxygen.

1. True
2. False

Q.

What are the products of thermal decomposition of Hydrogen peroxide?

1. $H_{2}O$

2. $H_2$

3. $O_2$

4. $O_3$

Q.

Give one example of thermal decomposition reaction?

Q. The decomposition of(PH3) on( W) at low pressure is a first order reaction it is because 1. Rate is independent of the surface coverage 2. Rate is proportional to the surface coverage Above which option is correct & Why??

Q.

Give one example of a decomposition reaction which carried out

by applying heat

Q.

The gas produced on heating CaCO₃ is

1. O₂

2. CO₂

3. CO

4. O₃

Q.

Which of the following is an example of electrolytic decomposition?

1. Decomposition of water

2. Decomposition of lead nitrate

3. Decomposition of ferrous sulphate

4. Decomposition of silver bromide

Q.

When Lead nitrate is heated it decomposes with a cracking sound, a reddish brown gas is liberated and a solid residue is left in the test tube. Write the name and formula of the gas.

Q.

Which of the following reaction requires light?

1. Electrolytic decomposition reactions

2. Combination reactions

3. Photolytic decomposition reactions

4. Thermal decomposition reactions

Q.

When metal carbonates are heated strongly, metal oxides are formed.

1. True
2. False

Q.

Name one compound that decomposes on heating.

Q. Name:
a.A carbonate which does not decompose on heating.
b.A nitrate which produces oxygen as the only gas.
c.A compound which produces carbon dioxide on heating.
d.A nitrate which produces brown gas on heating.

Q.

Choose the correct words or phrases from the brackets to complete the following sentences:

When ammonium chloride is heated, it undergoes thermal _____. (decomposition/dissociation)

Q.

Decomposition brought about by heat is known as thermal decomposition. What is the difference between thermal dissociation and thermal decomposition?

Q.

A thermal decomposition reaction in which a compound decomposes to give two new compounds.

Q.

What age decomposition reaction explain with example

Q.

State one relevant observation for the following:

When a crystal of Copper nitrate is heated in a test tube.

Q.

Name a white nitrate which on heating leaves a compound residue at ordinary temperature.

Q. ntIs 3Fe+4H2O*Fe3O4+4H2 a thermal decomposition reaction?How?n