NEET Test Series from KOTA - 10 Papers In MS WORD
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PHXII13:NUCLEI
363827
The nucleus of \({}_{56}B{a^{141}}\) contains
1 85 protons, 56 neutrons
2 55 protons, 86 neutrons
3 56 protons, 85 neutrons
4 86 protons, 55neutrons
Explanation:
Conceptual Question
PHXII13:NUCLEI
363828
Which of the following is most unstable?
1 Protons
2 Electrons
3 \(\alpha \) -particle
4 Neutrons
Explanation:
Neutrons are unstable and they decay by emitting an electron and antineutrino to become proton.
PHXII13:NUCLEI
363829
Number of neutrons in \({C^{12}}\,\) and \({C^{14}}\) are:
1 \(8\,\operatorname{and} \,6\)
2 \(6\,\operatorname{and} \,8\)
3 \(6\,\operatorname{and} \,6\)
4 \(8\,\operatorname{and} \,8\)
Explanation:
Number of neutrons \( = \) Mass number - Atomic number For \({C^{12}},\,\,\, = 12 - 6 = 6\) For \({C^{14}},\,\,\, = 14 - 6 = 8\)
PHXII13:NUCLEI
363830
Assertion : Nuclear density is extremely higher than atomic density. Reason : Most of the mass of the atom is concentrated in the nucleus.
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:
\({\rho _{nuclei{\rm{ }}}} = {10^{17}}\;kg{\rm{/}}{m^3}\) \({\rho _{atomic{\rm{ }}}} \approx {10^3}\;kg{\rm{/}}{m^3}\) In the planetary model, atoms have a small, dense nucleus containing most mass. Electrons orbit, contributing negligibly to total weight. This leads to higher nuclear density compared to atomic density. So correct option is (1).
363827
The nucleus of \({}_{56}B{a^{141}}\) contains
1 85 protons, 56 neutrons
2 55 protons, 86 neutrons
3 56 protons, 85 neutrons
4 86 protons, 55neutrons
Explanation:
Conceptual Question
PHXII13:NUCLEI
363828
Which of the following is most unstable?
1 Protons
2 Electrons
3 \(\alpha \) -particle
4 Neutrons
Explanation:
Neutrons are unstable and they decay by emitting an electron and antineutrino to become proton.
PHXII13:NUCLEI
363829
Number of neutrons in \({C^{12}}\,\) and \({C^{14}}\) are:
1 \(8\,\operatorname{and} \,6\)
2 \(6\,\operatorname{and} \,8\)
3 \(6\,\operatorname{and} \,6\)
4 \(8\,\operatorname{and} \,8\)
Explanation:
Number of neutrons \( = \) Mass number - Atomic number For \({C^{12}},\,\,\, = 12 - 6 = 6\) For \({C^{14}},\,\,\, = 14 - 6 = 8\)
PHXII13:NUCLEI
363830
Assertion : Nuclear density is extremely higher than atomic density. Reason : Most of the mass of the atom is concentrated in the nucleus.
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:
\({\rho _{nuclei{\rm{ }}}} = {10^{17}}\;kg{\rm{/}}{m^3}\) \({\rho _{atomic{\rm{ }}}} \approx {10^3}\;kg{\rm{/}}{m^3}\) In the planetary model, atoms have a small, dense nucleus containing most mass. Electrons orbit, contributing negligibly to total weight. This leads to higher nuclear density compared to atomic density. So correct option is (1).
363827
The nucleus of \({}_{56}B{a^{141}}\) contains
1 85 protons, 56 neutrons
2 55 protons, 86 neutrons
3 56 protons, 85 neutrons
4 86 protons, 55neutrons
Explanation:
Conceptual Question
PHXII13:NUCLEI
363828
Which of the following is most unstable?
1 Protons
2 Electrons
3 \(\alpha \) -particle
4 Neutrons
Explanation:
Neutrons are unstable and they decay by emitting an electron and antineutrino to become proton.
PHXII13:NUCLEI
363829
Number of neutrons in \({C^{12}}\,\) and \({C^{14}}\) are:
1 \(8\,\operatorname{and} \,6\)
2 \(6\,\operatorname{and} \,8\)
3 \(6\,\operatorname{and} \,6\)
4 \(8\,\operatorname{and} \,8\)
Explanation:
Number of neutrons \( = \) Mass number - Atomic number For \({C^{12}},\,\,\, = 12 - 6 = 6\) For \({C^{14}},\,\,\, = 14 - 6 = 8\)
PHXII13:NUCLEI
363830
Assertion : Nuclear density is extremely higher than atomic density. Reason : Most of the mass of the atom is concentrated in the nucleus.
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:
\({\rho _{nuclei{\rm{ }}}} = {10^{17}}\;kg{\rm{/}}{m^3}\) \({\rho _{atomic{\rm{ }}}} \approx {10^3}\;kg{\rm{/}}{m^3}\) In the planetary model, atoms have a small, dense nucleus containing most mass. Electrons orbit, contributing negligibly to total weight. This leads to higher nuclear density compared to atomic density. So correct option is (1).
363827
The nucleus of \({}_{56}B{a^{141}}\) contains
1 85 protons, 56 neutrons
2 55 protons, 86 neutrons
3 56 protons, 85 neutrons
4 86 protons, 55neutrons
Explanation:
Conceptual Question
PHXII13:NUCLEI
363828
Which of the following is most unstable?
1 Protons
2 Electrons
3 \(\alpha \) -particle
4 Neutrons
Explanation:
Neutrons are unstable and they decay by emitting an electron and antineutrino to become proton.
PHXII13:NUCLEI
363829
Number of neutrons in \({C^{12}}\,\) and \({C^{14}}\) are:
1 \(8\,\operatorname{and} \,6\)
2 \(6\,\operatorname{and} \,8\)
3 \(6\,\operatorname{and} \,6\)
4 \(8\,\operatorname{and} \,8\)
Explanation:
Number of neutrons \( = \) Mass number - Atomic number For \({C^{12}},\,\,\, = 12 - 6 = 6\) For \({C^{14}},\,\,\, = 14 - 6 = 8\)
PHXII13:NUCLEI
363830
Assertion : Nuclear density is extremely higher than atomic density. Reason : Most of the mass of the atom is concentrated in the nucleus.
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:
\({\rho _{nuclei{\rm{ }}}} = {10^{17}}\;kg{\rm{/}}{m^3}\) \({\rho _{atomic{\rm{ }}}} \approx {10^3}\;kg{\rm{/}}{m^3}\) In the planetary model, atoms have a small, dense nucleus containing most mass. Electrons orbit, contributing negligibly to total weight. This leads to higher nuclear density compared to atomic density. So correct option is (1).
