Carbon Monoxide

Q. Answer the question by selecting the appropriate option given below:

Assertion (A): When ferrous sulphate is heated, it decomposes to form anhydrous ferric oxide, sulphur dioxide, and sulphur trioxide.

Reason (R): Heating the salt provides energy which breaks ferrous sulphate into simpler compounds.

[0.8 mark]

1. Both A and R are true, and R is the correct explanation of A.
2. Both A and R are true, and R is not the correct explanation of A.
3. A is true, but R is false.
4. A is false, but R is true.

Q.

Give reasons for the following:

It is advised not to stand behind a vehicle with a running engine.

Q. Phosphorous combines with oxygen to form ___ oxide(s).

1. Two
2. Five
3. Three
4. Four

Q. Calcium carbonate decomposes on heating according to the following equation.
$CaC{O}_3\left(s\right)\rightleftharpoons CaO\left(s\right)+C{O}_2\left(g\right)$
How many moles of $C{O}_2$ will be obtained by decomposition of 50 g $CaC{O}_3$ ?

1. $\frac{5}{2}$
2. $1$
3. $\frac{3}{2}$
4. $\frac{1}{2}$

Q.

Amount of carbon dioxide produced by the combustion of hydrocarbons is proportional to the number of carbon atoms in them.

1. True

2. False

Q.

Which of the following is water gas?

1. ${\mathrm{CO}}_2+{\mathrm{H}}_2\mathrm{O}$

2. $\mathrm{CO}+{\mathrm{H}}_2\mathrm{O}$

3. ${\mathrm{CO}}_2+{\mathrm{H}}_2$

4. $\mathrm{CO}+{\mathrm{H}}_2$

Q. Answer the question by selecting the appropriate option given below:

Assertion (A): When ferrous sulphate is heated, it decomposes to form anhydrous ferric oxide, sulphur dioxide, and sulphur trioxide.

Reason (R): Heating the salt provides energy which breaks ferrous sulphate into simpler compounds.

[0.8 mark]

1. Both A and R are true, and R is the correct explanation of A.
2. Both A and R are true, and R is not the correct explanation of A.
3. A is true, but R is false.
4. A is false, but R is true.

Q. Carbon and oxygen burn in excess to give carbon monoxide.

1. True
2. False

Q. A mixture of potassium carbonate and calcium carbonate is subjected to decomposition. The percentage loss in weight was 11%. The ratio of amount of potassium carbonate to calcium carbonate in the mixture is:

1. 3:1
2. 1:3
3. 1:2
4. 2:1

Q.

Which of the following is water gas?

1. $\text{CO}+{\text{H}}_2$

2. $\text{CO}+{\text{N}}_2$

3. ${\text{CO}}_2+{\text{H}}_2$

4. ${\text{CO}}_2+{\text{N}}_2$

Q. Find out the loss in weight when 75 g of calcium carbonate is subjected to decomposition completely.

1. 66 g
2. 22 g
3. 44 g
4. 33 g

Q. A mixture of potassium carbonate and calcium carbonate is subjected to decomposition. The percentage loss in weight was 11%. Find out the ratio of the amount of potassium carbonate to calcium carbonate in the mixture.

1. 1:3
2. 3:1
3. 4:1
4. 1:4