What is the energy released by fission of 1 g of U²³⁵?
What is the energy released by fission of 1 g of U²³⁵? (Assume 200 MeV energy is liberated on fission of 1 nucleus)
Options
(a) 2.26×10⁴ kWh (b) 1.2×10⁴ kWh (c) 4.5×10⁴ kWh (d) […]
Physics
In which of the follows decays, the element does not change?
In which of the follows decays, the element does not change?
Options
(a) β-decay (b) α-decay (c) γ-decay (d) None of these
Correct Answer:
γ-decay
Explanation:
No explanation available. Be the first to […]
A radioactive nucleus emits a beta particle. The parent and daughter nuclei are
A radioactive nucleus emits a beta particle. The parent and daughter nuclei are
Options
(a) Isotopes (b) Isotones (c) Isomers (d) Isobars
Correct Answer:
Isobars
Explanation:
No explanation available. Be the first to […]
By the succesive disintegration of ₉₂U²³⁸, the final product obtained is ₈₂Pb²⁰⁶, then
By the succesive disintegration of ₉₂U²³⁸, the final product obtained is ₈₂Pb²⁰⁶, then how many number of α and β-particles are emitted?
Options
(a) 6 and 8 (b) 8 and 6 (c) 12 and […]
During negative β-decay
During negative β-decay
Options
(a) Neutron converts into proton (b) Proton converts into neutron (c) Neutron proton ratio increases (d) None of these
Correct Answer:
Neutron converts into proton
Explanation:
No explanation available. […]
In atom bomb, the reaction which occurs is
In atom bomb, the reaction which occurs is
Options
(a) fusion (b) controlled fission (c) uncontrolled fission (d) thermonuclear
Correct Answer:
uncontrolled fission
Explanation:
No explanation available. Be the first to write the […]
1 curie is equal to
1 curie is equal to
Options
(a) 3×10¹⁰ disintegrations/sec (b) 3.7×10⁷ disintegrations/sec (c) 5×10⁷ disintegrations/sec (d) 3.7×10¹⁰ disintegrations/sec
Correct Answer:
3.7×10¹⁰ disintegrations/sec
Explanation:
No explanation available. Be the first to write the explanation […]
A nucleus ᵐₙ X emits one α- particle and two β- particles. The resulting nucleus is
A nucleus ᵐₙ X emits one α- particle and two β- particles. The resulting nucleus is
Options
(a) ᵐ⁻⁶ₙ₋₄ Z (b) ᵐ⁻⁶ₙ Z (c) ᵐ⁻⁴ₙ X (d) ᵐ⁻⁴ₙ₋₂ Y
Correct Answer:
ᵐ⁻⁴ₙ X
Magnetism of a magnet is due to
Magnetism of a magnet is due to
Options
(a) Cosmic rays (b) Large magnet at the centre of Earth (c) Spins of electrons (d) Gravitation
Correct Answer:
Spins of electrons
Explanation:
Spins of electrons […]
Nickel shows ferromagnetic property at room temperature. If the temperature is
Nickel shows ferromagnetic property at room temperature. If the temperature is increased beyond Curie temperature, then it will show
Options
(a) anti ferromagnetism (b) no magnetic property (c) diamagnetism (d) paramagnetism
Correct Answer: […]