306592
Assertion : One atomic mass unit is defined as one twelfth of the mass of one carbon-12 atom Reason : Carbon-12 isotope is the most abundant isotope of carbon and has been chosen as standard.
1 If both Assertion & Reason are true and reason is the correct explanation of the assertion.
2 If both Assertion & Reason are true but reason is not the correct explanation of the assertion.
3 If Assertion is true but Reason is false.
4 If Assertion is false but Reason is true.
Explanation:
Both Assertion and Reason are true but Reason is not the correct explanation of Assertion. Atomic masses of the elements obtained by scientists by comparing with the mass of carbon comes out to be close to whole number value.
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
306593
The atomic masses of the elements are usually fractional because:
1 Elements consist of impurities
2 These are mixtures of isobars
3 These are mixtures of allotropes
4 These are mixtures of isotopes
Explanation:
The atomic masses of most elements are fractional as most elements occur as a mixture of isotopes of different masses
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
306594
A sample of “He” have as much atoms as there are letters in “ACID”. Then find the mass of “He” sample
1 16 amu
2 16 gm
3 20 gm
4 20 amu
Explanation:
Mass of He sample =\({\rm{ 4amu \times 4 = 16amu}}\)
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
306595
Assertion : Atomic mass has no unit but expressed in amu. Reason : It is the average mass of an atom taking care of relative abundance of all its possible isotopes.
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 average mass of an atom is determined by the weighted average of its isotopes' masses. It is calculated using the formula Average atomic mass \(=\) \(\sum(\) Relative Abundance \() \times(\) Atomic mass of isotope) This provides a dimensionless atomic mass that accounts for the relative abundances of isotopes in the element. So, the option (1) is correct.
306592
Assertion : One atomic mass unit is defined as one twelfth of the mass of one carbon-12 atom Reason : Carbon-12 isotope is the most abundant isotope of carbon and has been chosen as standard.
1 If both Assertion & Reason are true and reason is the correct explanation of the assertion.
2 If both Assertion & Reason are true but reason is not the correct explanation of the assertion.
3 If Assertion is true but Reason is false.
4 If Assertion is false but Reason is true.
Explanation:
Both Assertion and Reason are true but Reason is not the correct explanation of Assertion. Atomic masses of the elements obtained by scientists by comparing with the mass of carbon comes out to be close to whole number value.
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
306593
The atomic masses of the elements are usually fractional because:
1 Elements consist of impurities
2 These are mixtures of isobars
3 These are mixtures of allotropes
4 These are mixtures of isotopes
Explanation:
The atomic masses of most elements are fractional as most elements occur as a mixture of isotopes of different masses
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
306594
A sample of “He” have as much atoms as there are letters in “ACID”. Then find the mass of “He” sample
1 16 amu
2 16 gm
3 20 gm
4 20 amu
Explanation:
Mass of He sample =\({\rm{ 4amu \times 4 = 16amu}}\)
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
306595
Assertion : Atomic mass has no unit but expressed in amu. Reason : It is the average mass of an atom taking care of relative abundance of all its possible isotopes.
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 average mass of an atom is determined by the weighted average of its isotopes' masses. It is calculated using the formula Average atomic mass \(=\) \(\sum(\) Relative Abundance \() \times(\) Atomic mass of isotope) This provides a dimensionless atomic mass that accounts for the relative abundances of isotopes in the element. So, the option (1) is correct.
306592
Assertion : One atomic mass unit is defined as one twelfth of the mass of one carbon-12 atom Reason : Carbon-12 isotope is the most abundant isotope of carbon and has been chosen as standard.
1 If both Assertion & Reason are true and reason is the correct explanation of the assertion.
2 If both Assertion & Reason are true but reason is not the correct explanation of the assertion.
3 If Assertion is true but Reason is false.
4 If Assertion is false but Reason is true.
Explanation:
Both Assertion and Reason are true but Reason is not the correct explanation of Assertion. Atomic masses of the elements obtained by scientists by comparing with the mass of carbon comes out to be close to whole number value.
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
306593
The atomic masses of the elements are usually fractional because:
1 Elements consist of impurities
2 These are mixtures of isobars
3 These are mixtures of allotropes
4 These are mixtures of isotopes
Explanation:
The atomic masses of most elements are fractional as most elements occur as a mixture of isotopes of different masses
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
306594
A sample of “He” have as much atoms as there are letters in “ACID”. Then find the mass of “He” sample
1 16 amu
2 16 gm
3 20 gm
4 20 amu
Explanation:
Mass of He sample =\({\rm{ 4amu \times 4 = 16amu}}\)
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
306595
Assertion : Atomic mass has no unit but expressed in amu. Reason : It is the average mass of an atom taking care of relative abundance of all its possible isotopes.
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 average mass of an atom is determined by the weighted average of its isotopes' masses. It is calculated using the formula Average atomic mass \(=\) \(\sum(\) Relative Abundance \() \times(\) Atomic mass of isotope) This provides a dimensionless atomic mass that accounts for the relative abundances of isotopes in the element. So, the option (1) is correct.
306592
Assertion : One atomic mass unit is defined as one twelfth of the mass of one carbon-12 atom Reason : Carbon-12 isotope is the most abundant isotope of carbon and has been chosen as standard.
1 If both Assertion & Reason are true and reason is the correct explanation of the assertion.
2 If both Assertion & Reason are true but reason is not the correct explanation of the assertion.
3 If Assertion is true but Reason is false.
4 If Assertion is false but Reason is true.
Explanation:
Both Assertion and Reason are true but Reason is not the correct explanation of Assertion. Atomic masses of the elements obtained by scientists by comparing with the mass of carbon comes out to be close to whole number value.
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
306593
The atomic masses of the elements are usually fractional because:
1 Elements consist of impurities
2 These are mixtures of isobars
3 These are mixtures of allotropes
4 These are mixtures of isotopes
Explanation:
The atomic masses of most elements are fractional as most elements occur as a mixture of isotopes of different masses
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
306594
A sample of “He” have as much atoms as there are letters in “ACID”. Then find the mass of “He” sample
1 16 amu
2 16 gm
3 20 gm
4 20 amu
Explanation:
Mass of He sample =\({\rm{ 4amu \times 4 = 16amu}}\)
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
306595
Assertion : Atomic mass has no unit but expressed in amu. Reason : It is the average mass of an atom taking care of relative abundance of all its possible isotopes.
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 average mass of an atom is determined by the weighted average of its isotopes' masses. It is calculated using the formula Average atomic mass \(=\) \(\sum(\) Relative Abundance \() \times(\) Atomic mass of isotope) This provides a dimensionless atomic mass that accounts for the relative abundances of isotopes in the element. So, the option (1) is correct.
