363931
Which of the following is a correct statement?
1 Gamma rays are high energy neutrons
2 Beta rays are same as cathode rays
3 Protons and neutrons are singly ionized helium atoms
4 Alpha particles are singly ionized helium atoms
Explanation:
Both the \(\beta - \)rays and the cathode rays are electrons.\(\gamma - \) rays are \(EM\) waves, \(\alpha - \) particles are doubly ionized helium atoms.
PHXII13:NUCLEI
363932
A radioactive element forms its own isotope after 3 consecutive disintegrations. The particles emitted are
1 \(3\beta \) paricles
2 \(2\beta \) particles and \(1\alpha \) particle
3 \(2\beta \) particles and \(1\gamma \) particle
4 \(2\alpha \) particles and \(1\beta \) particle
Explanation:
Any isotope of the element \(_Z{X^A}\) should have same number of protons in its nucleus, i.e., the isotope should have same \(Z\). Emission of alpha particle decreases \(Z\) by 2. Emission of beta particle increases \(Z\) by 1. The emission of one \(\alpha \) particle and two \(\beta \) particles maintain the same \(Z\). Hence for isotope formation two \(\beta \) particles and one \(\alpha \) particle are emitted
KCET - 2007
PHXII13:NUCLEI
363933
Pick out the correct statements from the following. (a) Electron emission during decay is always accompained by neutrino (b) Nuclear force is charge independent (c) fusion is the chief source of stellar energy
1 (a), (b) are correct
2 (a), (c) are correct
3 only (a) is correct
4 (b), (c) are correct
Explanation:
Electron emission during \({\beta ^ - }\) decay is always accompanied by antineutrino emission. Hence , statement (a) is incorrect While statements (b) and (c) are correct
PHXII13:NUCLEI
363934
The \(Y - \)rays are originated from
1 nucleus
2 outermost shell of atom
3 innermost shell of atom
4 None of the above
Explanation:
When an alpha or a beta decay takes place, the daughter nucleus is generally formed in one of its excited states eventually comes to its ground state by emitting a photon or electromagnetic radiation. The process of a nucleus coming down to a lower energy level by emitting a photon is called gamma decay. Hence, \(\gamma\)-rays are originated from excited nucleus.
NEET Test Series from KOTA - 10 Papers In MS WORD
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PHXII13:NUCLEI
363931
Which of the following is a correct statement?
1 Gamma rays are high energy neutrons
2 Beta rays are same as cathode rays
3 Protons and neutrons are singly ionized helium atoms
4 Alpha particles are singly ionized helium atoms
Explanation:
Both the \(\beta - \)rays and the cathode rays are electrons.\(\gamma - \) rays are \(EM\) waves, \(\alpha - \) particles are doubly ionized helium atoms.
PHXII13:NUCLEI
363932
A radioactive element forms its own isotope after 3 consecutive disintegrations. The particles emitted are
1 \(3\beta \) paricles
2 \(2\beta \) particles and \(1\alpha \) particle
3 \(2\beta \) particles and \(1\gamma \) particle
4 \(2\alpha \) particles and \(1\beta \) particle
Explanation:
Any isotope of the element \(_Z{X^A}\) should have same number of protons in its nucleus, i.e., the isotope should have same \(Z\). Emission of alpha particle decreases \(Z\) by 2. Emission of beta particle increases \(Z\) by 1. The emission of one \(\alpha \) particle and two \(\beta \) particles maintain the same \(Z\). Hence for isotope formation two \(\beta \) particles and one \(\alpha \) particle are emitted
KCET - 2007
PHXII13:NUCLEI
363933
Pick out the correct statements from the following. (a) Electron emission during decay is always accompained by neutrino (b) Nuclear force is charge independent (c) fusion is the chief source of stellar energy
1 (a), (b) are correct
2 (a), (c) are correct
3 only (a) is correct
4 (b), (c) are correct
Explanation:
Electron emission during \({\beta ^ - }\) decay is always accompanied by antineutrino emission. Hence , statement (a) is incorrect While statements (b) and (c) are correct
PHXII13:NUCLEI
363934
The \(Y - \)rays are originated from
1 nucleus
2 outermost shell of atom
3 innermost shell of atom
4 None of the above
Explanation:
When an alpha or a beta decay takes place, the daughter nucleus is generally formed in one of its excited states eventually comes to its ground state by emitting a photon or electromagnetic radiation. The process of a nucleus coming down to a lower energy level by emitting a photon is called gamma decay. Hence, \(\gamma\)-rays are originated from excited nucleus.
363931
Which of the following is a correct statement?
1 Gamma rays are high energy neutrons
2 Beta rays are same as cathode rays
3 Protons and neutrons are singly ionized helium atoms
4 Alpha particles are singly ionized helium atoms
Explanation:
Both the \(\beta - \)rays and the cathode rays are electrons.\(\gamma - \) rays are \(EM\) waves, \(\alpha - \) particles are doubly ionized helium atoms.
PHXII13:NUCLEI
363932
A radioactive element forms its own isotope after 3 consecutive disintegrations. The particles emitted are
1 \(3\beta \) paricles
2 \(2\beta \) particles and \(1\alpha \) particle
3 \(2\beta \) particles and \(1\gamma \) particle
4 \(2\alpha \) particles and \(1\beta \) particle
Explanation:
Any isotope of the element \(_Z{X^A}\) should have same number of protons in its nucleus, i.e., the isotope should have same \(Z\). Emission of alpha particle decreases \(Z\) by 2. Emission of beta particle increases \(Z\) by 1. The emission of one \(\alpha \) particle and two \(\beta \) particles maintain the same \(Z\). Hence for isotope formation two \(\beta \) particles and one \(\alpha \) particle are emitted
KCET - 2007
PHXII13:NUCLEI
363933
Pick out the correct statements from the following. (a) Electron emission during decay is always accompained by neutrino (b) Nuclear force is charge independent (c) fusion is the chief source of stellar energy
1 (a), (b) are correct
2 (a), (c) are correct
3 only (a) is correct
4 (b), (c) are correct
Explanation:
Electron emission during \({\beta ^ - }\) decay is always accompanied by antineutrino emission. Hence , statement (a) is incorrect While statements (b) and (c) are correct
PHXII13:NUCLEI
363934
The \(Y - \)rays are originated from
1 nucleus
2 outermost shell of atom
3 innermost shell of atom
4 None of the above
Explanation:
When an alpha or a beta decay takes place, the daughter nucleus is generally formed in one of its excited states eventually comes to its ground state by emitting a photon or electromagnetic radiation. The process of a nucleus coming down to a lower energy level by emitting a photon is called gamma decay. Hence, \(\gamma\)-rays are originated from excited nucleus.
363931
Which of the following is a correct statement?
1 Gamma rays are high energy neutrons
2 Beta rays are same as cathode rays
3 Protons and neutrons are singly ionized helium atoms
4 Alpha particles are singly ionized helium atoms
Explanation:
Both the \(\beta - \)rays and the cathode rays are electrons.\(\gamma - \) rays are \(EM\) waves, \(\alpha - \) particles are doubly ionized helium atoms.
PHXII13:NUCLEI
363932
A radioactive element forms its own isotope after 3 consecutive disintegrations. The particles emitted are
1 \(3\beta \) paricles
2 \(2\beta \) particles and \(1\alpha \) particle
3 \(2\beta \) particles and \(1\gamma \) particle
4 \(2\alpha \) particles and \(1\beta \) particle
Explanation:
Any isotope of the element \(_Z{X^A}\) should have same number of protons in its nucleus, i.e., the isotope should have same \(Z\). Emission of alpha particle decreases \(Z\) by 2. Emission of beta particle increases \(Z\) by 1. The emission of one \(\alpha \) particle and two \(\beta \) particles maintain the same \(Z\). Hence for isotope formation two \(\beta \) particles and one \(\alpha \) particle are emitted
KCET - 2007
PHXII13:NUCLEI
363933
Pick out the correct statements from the following. (a) Electron emission during decay is always accompained by neutrino (b) Nuclear force is charge independent (c) fusion is the chief source of stellar energy
1 (a), (b) are correct
2 (a), (c) are correct
3 only (a) is correct
4 (b), (c) are correct
Explanation:
Electron emission during \({\beta ^ - }\) decay is always accompanied by antineutrino emission. Hence , statement (a) is incorrect While statements (b) and (c) are correct
PHXII13:NUCLEI
363934
The \(Y - \)rays are originated from
1 nucleus
2 outermost shell of atom
3 innermost shell of atom
4 None of the above
Explanation:
When an alpha or a beta decay takes place, the daughter nucleus is generally formed in one of its excited states eventually comes to its ground state by emitting a photon or electromagnetic radiation. The process of a nucleus coming down to a lower energy level by emitting a photon is called gamma decay. Hence, \(\gamma\)-rays are originated from excited nucleus.
