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CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306653 Which of the following represents Avogadro’s hypothesis?

1 Equal volumes of all gases under same condition of temperature and pressure contain equal number of atoms

2 Equal volumes of all gases under same condition of temperature and pressure contain equal number of molecules

3 Gases react together in volumes which bear a simple ratio to one another

4 The rates of diffusion of gases are inversely proportional to the square root of their densities

CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306654 Assertion :
Under similar conditions of temperature and pressure, gases always combine in simple ratio of their volumes.
Reason :
Equal volumes of gases have equal
number of molecules at constant temperature and pressure

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but Reason is correct.

CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306655 Equal masses of $H_{2}, O_{2} a n d C H_{4}$ have been taken in a container of volume V at temperature $2 7^{^{\circ}} C$ in identical conditions. The ratio of the volume of gases $H_{2} : O_{2} : C H_{4}$ would be

1

8 : 16 : 1

2

16 : 8 : 1

3

16 : 1 : 2

4

8 : 1 : 2

Explanation:

According to avogadro’s hypothesis Volume of a gas (V) $\propto$ number of moles (n)
Therefore, the ratio of the volumes of gases can be determined in terms of their moles.
The ratio of volume of $H_{2} : O_{2} : m e t h a n e (C H_{4})$ is given by $V_{H_{2}} : V_{O_{2}} : V_{C H_{4}} = n_{H_{2}} : n_{O_{2}} : n_{C H_{4}}$
$V_{H_{2}} : V_{O_{2}} : V_{C H_{4}} = \frac{m_{H_{2}}}{m_{H_{2}}} : \frac{m_{O_{2}}}{m_{O_{2}}} : \frac{m_{C H_{4}}}{m_{C H_{4}}}$
But $m_{H_{2}} = m_{O_{2}} = m_{C H_{4}} = m [n = \frac{m a s s}{m o l a r m a s s}]$
Thus, $V_{H_{2}} : V_{O_{2}} : V_{C H_{4}} = \frac{m}{2} : \frac{m}{32} : \frac{m}{16} = 16 : 1 : 2$

CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306656 Equal volumes of two different gases 1 and 2 with respective molecular masses $M_{1} and M_{2}$ are at the same temperature $(T)$ and pressure (P). If $M_{1} > M_{2},$ then which of the following is true regarding the number of molecules $(N)$ ?

1

N_{1} > N_{2}

2

N_{1} = N_{2}

3

N_{1} < N_{2}

4 cannot be predicted

Explanation:

Equal volumes of different gases and vapours at the same temperature and pressure contain the same number of molecules.[Avogadro's law] i.e. $N_{1} = N_{2}$ . So , correct option is

CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306653 Which of the following represents Avogadro’s hypothesis?

1 Equal volumes of all gases under same condition of temperature and pressure contain equal number of atoms

2 Equal volumes of all gases under same condition of temperature and pressure contain equal number of molecules

3 Gases react together in volumes which bear a simple ratio to one another

4 The rates of diffusion of gases are inversely proportional to the square root of their densities

CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306654 Assertion :
Under similar conditions of temperature and pressure, gases always combine in simple ratio of their volumes.
Reason :
Equal volumes of gases have equal
number of molecules at constant temperature and pressure

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but Reason is correct.

CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306655 Equal masses of $H_{2}, O_{2} a n d C H_{4}$ have been taken in a container of volume V at temperature $2 7^{^{\circ}} C$ in identical conditions. The ratio of the volume of gases $H_{2} : O_{2} : C H_{4}$ would be

1

8 : 16 : 1

2

16 : 8 : 1

3

16 : 1 : 2

4

8 : 1 : 2

Explanation:

According to avogadro’s hypothesis Volume of a gas (V) $\propto$ number of moles (n)
Therefore, the ratio of the volumes of gases can be determined in terms of their moles.
The ratio of volume of $H_{2} : O_{2} : m e t h a n e (C H_{4})$ is given by $V_{H_{2}} : V_{O_{2}} : V_{C H_{4}} = n_{H_{2}} : n_{O_{2}} : n_{C H_{4}}$
$V_{H_{2}} : V_{O_{2}} : V_{C H_{4}} = \frac{m_{H_{2}}}{m_{H_{2}}} : \frac{m_{O_{2}}}{m_{O_{2}}} : \frac{m_{C H_{4}}}{m_{C H_{4}}}$
But $m_{H_{2}} = m_{O_{2}} = m_{C H_{4}} = m [n = \frac{m a s s}{m o l a r m a s s}]$
Thus, $V_{H_{2}} : V_{O_{2}} : V_{C H_{4}} = \frac{m}{2} : \frac{m}{32} : \frac{m}{16} = 16 : 1 : 2$

CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306656 Equal volumes of two different gases 1 and 2 with respective molecular masses $M_{1} and M_{2}$ are at the same temperature $(T)$ and pressure (P). If $M_{1} > M_{2},$ then which of the following is true regarding the number of molecules $(N)$ ?

1

N_{1} > N_{2}

2

N_{1} = N_{2}

3

N_{1} < N_{2}

4 cannot be predicted

Explanation:

Equal volumes of different gases and vapours at the same temperature and pressure contain the same number of molecules.[Avogadro's law] i.e. $N_{1} = N_{2}$ . So , correct option is

CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306653 Which of the following represents Avogadro’s hypothesis?

1 Equal volumes of all gases under same condition of temperature and pressure contain equal number of atoms

2 Equal volumes of all gases under same condition of temperature and pressure contain equal number of molecules

3 Gases react together in volumes which bear a simple ratio to one another

4 The rates of diffusion of gases are inversely proportional to the square root of their densities

CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306654 Assertion :
Under similar conditions of temperature and pressure, gases always combine in simple ratio of their volumes.
Reason :
Equal volumes of gases have equal
number of molecules at constant temperature and pressure

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but Reason is correct.

CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306655 Equal masses of $H_{2}, O_{2} a n d C H_{4}$ have been taken in a container of volume V at temperature $2 7^{^{\circ}} C$ in identical conditions. The ratio of the volume of gases $H_{2} : O_{2} : C H_{4}$ would be

1

8 : 16 : 1

2

16 : 8 : 1

3

16 : 1 : 2

4

8 : 1 : 2

Explanation:

According to avogadro’s hypothesis Volume of a gas (V) $\propto$ number of moles (n)
Therefore, the ratio of the volumes of gases can be determined in terms of their moles.
The ratio of volume of $H_{2} : O_{2} : m e t h a n e (C H_{4})$ is given by $V_{H_{2}} : V_{O_{2}} : V_{C H_{4}} = n_{H_{2}} : n_{O_{2}} : n_{C H_{4}}$
$V_{H_{2}} : V_{O_{2}} : V_{C H_{4}} = \frac{m_{H_{2}}}{m_{H_{2}}} : \frac{m_{O_{2}}}{m_{O_{2}}} : \frac{m_{C H_{4}}}{m_{C H_{4}}}$
But $m_{H_{2}} = m_{O_{2}} = m_{C H_{4}} = m [n = \frac{m a s s}{m o l a r m a s s}]$
Thus, $V_{H_{2}} : V_{O_{2}} : V_{C H_{4}} = \frac{m}{2} : \frac{m}{32} : \frac{m}{16} = 16 : 1 : 2$

CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306656 Equal volumes of two different gases 1 and 2 with respective molecular masses $M_{1} and M_{2}$ are at the same temperature $(T)$ and pressure (P). If $M_{1} > M_{2},$ then which of the following is true regarding the number of molecules $(N)$ ?

1

N_{1} > N_{2}

2

N_{1} = N_{2}

3

N_{1} < N_{2}

4 cannot be predicted

Explanation:

Equal volumes of different gases and vapours at the same temperature and pressure contain the same number of molecules.[Avogadro's law] i.e. $N_{1} = N_{2}$ . So , correct option is

CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306653 Which of the following represents Avogadro’s hypothesis?

1 Equal volumes of all gases under same condition of temperature and pressure contain equal number of atoms

2 Equal volumes of all gases under same condition of temperature and pressure contain equal number of molecules

3 Gases react together in volumes which bear a simple ratio to one another

4 The rates of diffusion of gases are inversely proportional to the square root of their densities

CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306654 Assertion :
Under similar conditions of temperature and pressure, gases always combine in simple ratio of their volumes.
Reason :
Equal volumes of gases have equal
number of molecules at constant temperature and pressure

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but Reason is correct.

CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306655 Equal masses of $H_{2}, O_{2} a n d C H_{4}$ have been taken in a container of volume V at temperature $2 7^{^{\circ}} C$ in identical conditions. The ratio of the volume of gases $H_{2} : O_{2} : C H_{4}$ would be

1

8 : 16 : 1

2

16 : 8 : 1

3

16 : 1 : 2

4

8 : 1 : 2

Explanation:

According to avogadro’s hypothesis Volume of a gas (V) $\propto$ number of moles (n)
Therefore, the ratio of the volumes of gases can be determined in terms of their moles.
The ratio of volume of $H_{2} : O_{2} : m e t h a n e (C H_{4})$ is given by $V_{H_{2}} : V_{O_{2}} : V_{C H_{4}} = n_{H_{2}} : n_{O_{2}} : n_{C H_{4}}$
$V_{H_{2}} : V_{O_{2}} : V_{C H_{4}} = \frac{m_{H_{2}}}{m_{H_{2}}} : \frac{m_{O_{2}}}{m_{O_{2}}} : \frac{m_{C H_{4}}}{m_{C H_{4}}}$
But $m_{H_{2}} = m_{O_{2}} = m_{C H_{4}} = m [n = \frac{m a s s}{m o l a r m a s s}]$
Thus, $V_{H_{2}} : V_{O_{2}} : V_{C H_{4}} = \frac{m}{2} : \frac{m}{32} : \frac{m}{16} = 16 : 1 : 2$

CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306656 Equal volumes of two different gases 1 and 2 with respective molecular masses $M_{1} and M_{2}$ are at the same temperature $(T)$ and pressure (P). If $M_{1} > M_{2},$ then which of the following is true regarding the number of molecules $(N)$ ?

1

N_{1} > N_{2}

2

N_{1} = N_{2}

3

N_{1} < N_{2}

4 cannot be predicted

Explanation:

Equal volumes of different gases and vapours at the same temperature and pressure contain the same number of molecules.[Avogadro's law] i.e. $N_{1} = N_{2}$ . So , correct option is