306740
Assertion : Atomicity of oxygen is 2 . Reason : 1 mole of an element contains \(6.023 \times 10^{23}\) atoms.
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.
Explanation:
The number of atoms present in a molecule of a gaseous element is called its atomicity. For example, \(\mathrm{O}_{2}\) has two atoms, and hence its atomicity is 2 . 1 mole of an element contains Avagadro number of atoms. So, the option (2) is correct.
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
306741
Assertion : Molar volume of gases change considerably with temperature and pressure. Reason : Molar volume of a substance is the volume occupied by 1 mole of that substance.
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.
Explanation:
The volume of a gas is dependen on its temperature and pressure. Temperature effects the kinetic energy. Pressure change effects the intermoelcular attraction, which inturn allows for expansion or contraction. So, the option (2) is correct.
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
306742
How many molecules of ammonia gas are present in \(\mathrm{67.2 \mathrm{dm}^{3}}\), measured at S.T.P.?
306740
Assertion : Atomicity of oxygen is 2 . Reason : 1 mole of an element contains \(6.023 \times 10^{23}\) atoms.
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.
Explanation:
The number of atoms present in a molecule of a gaseous element is called its atomicity. For example, \(\mathrm{O}_{2}\) has two atoms, and hence its atomicity is 2 . 1 mole of an element contains Avagadro number of atoms. So, the option (2) is correct.
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
306741
Assertion : Molar volume of gases change considerably with temperature and pressure. Reason : Molar volume of a substance is the volume occupied by 1 mole of that substance.
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.
Explanation:
The volume of a gas is dependen on its temperature and pressure. Temperature effects the kinetic energy. Pressure change effects the intermoelcular attraction, which inturn allows for expansion or contraction. So, the option (2) is correct.
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
306742
How many molecules of ammonia gas are present in \(\mathrm{67.2 \mathrm{dm}^{3}}\), measured at S.T.P.?
306740
Assertion : Atomicity of oxygen is 2 . Reason : 1 mole of an element contains \(6.023 \times 10^{23}\) atoms.
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.
Explanation:
The number of atoms present in a molecule of a gaseous element is called its atomicity. For example, \(\mathrm{O}_{2}\) has two atoms, and hence its atomicity is 2 . 1 mole of an element contains Avagadro number of atoms. So, the option (2) is correct.
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
306741
Assertion : Molar volume of gases change considerably with temperature and pressure. Reason : Molar volume of a substance is the volume occupied by 1 mole of that substance.
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.
Explanation:
The volume of a gas is dependen on its temperature and pressure. Temperature effects the kinetic energy. Pressure change effects the intermoelcular attraction, which inturn allows for expansion or contraction. So, the option (2) is correct.
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
306742
How many molecules of ammonia gas are present in \(\mathrm{67.2 \mathrm{dm}^{3}}\), measured at S.T.P.?
306740
Assertion : Atomicity of oxygen is 2 . Reason : 1 mole of an element contains \(6.023 \times 10^{23}\) atoms.
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.
Explanation:
The number of atoms present in a molecule of a gaseous element is called its atomicity. For example, \(\mathrm{O}_{2}\) has two atoms, and hence its atomicity is 2 . 1 mole of an element contains Avagadro number of atoms. So, the option (2) is correct.
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
306741
Assertion : Molar volume of gases change considerably with temperature and pressure. Reason : Molar volume of a substance is the volume occupied by 1 mole of that substance.
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.
Explanation:
The volume of a gas is dependen on its temperature and pressure. Temperature effects the kinetic energy. Pressure change effects the intermoelcular attraction, which inturn allows for expansion or contraction. So, the option (2) is correct.
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
306742
How many molecules of ammonia gas are present in \(\mathrm{67.2 \mathrm{dm}^{3}}\), measured at S.T.P.?
