Gay Lussac's Law, Avagadro's Law

Q. $10d{m}^3$ of $N_2$ gas and $10d{m}^3$ of gas X at the same temperature contain the same number of molecules.
The gas X is

1. $C{O}_2$
2. $NO$
3. $CO$
4. $H_2$

Q.

One litre of $O_2$ at NTP reacts with 3 times the volume of CO at NTP. Calculate volume of $C{O}_2$ formed.

1. 2 L

2. 3 L

3. 4 L

4. 1 L

Q.

The volume of $1.5gm$ atoms of helium gas under standard conditions of temperature and pressure is

1. 44.8 lit

2. 11.2 lit

3. 22.4 lit

4. 33.6 lit

Q.

The mass of Hydrogen at S.T.P. that is present in a vessel which can hold 4 grams of oxygen under similar conditions is

1. 0.5 gram

2. 1 gram

3. 0.25 gram

4. 0.125 gram

Q.

$200c.c.$ of a gas measured at S.T.P. has a mass of $0.268g$. Molecular weight of the gas is:

1. 28

2. 2

3. 16

4. 30

Q.

The density of a gas at S.T.P. is $1.40grams$ per litre. The molecular weight of the gas is

1. 31.4

2. 28

3. 30

4. 35

Q.

At 298K 1 atm, 1 volume of N₂ reacts with 3 volumes of H₂ to give 2 volumes of NH₃. The ratio 1:3:2 illustrates:

1. Constant proportions

2. Gay-Lussac’s law

3. Multiple proportions

4. Reciprocal proportions

Q. Mass of a mole of electrons is

1. $0.20mg$
2. $0.02mg$
3. $0.55mg$
4. $1.00mg$

Q. The number of atoms present in $4.25grams$ of $N{H}_3$ is approximately

1. $1.00\times {10}^{23}$
2. $1.50\times {10}^{23}$
3. $2.00\times {10}^{23}$
4. $6.02\times {10}^{23}$

Q. $11.2\text{L}$ of $C{H}_4$ and $22.4\text{L}$ of $C_2{H}_6$ at $STP$ are mixed. Then the correct statement(s) is/are:

1. Vapour density of the mixture is 12.67
2. Average molecular weight will be less than 16
3. Average molecular weight will be greater than 16 and less than 30
4. Average molecular weight will be greater than 30