emitted one particles, then it will become:
1.
2.
3.
4. None of these
When X → \(N_{7}^{14}\) + 2\(\beta^{-} \) then the number of neutrons in X will be:
1. 3
2. 5
3. 7
4. 9
If a radioactive element emitted one α and one β-particle, then the mass number of the daughter element is:
1. decreased by 4
2. increased by 4
3. decreased by 2
4. increased by 2
For the given reaction, the particle \(X\) is:
\({ }_6^{11} \mathrm{C}\rightarrow { }_5^{11}\mathrm{B}+\beta^{+}+X\)
1. neutron
2. anti neutrino
3. neutrino
4. proton
Which rays contain (+ve) charged particle:
1. α-rays
2. β-rays
3. γ-rays
4. X-rays
If a species emits firstly a positron, then two and two β and at last one is also emitted and finally convert into stable species, so the correct relation will be:
1. c = b – 12, d = a – 5
2. a = c – 8, d = b – 1
3. a = c – 6, d = b – 0
4. a = c – 4, a = b – 2
If a deuteron is bombarded on a 8O16 nucleus then an α-particle is emitted. The product nucleus is:
1. 7N13
2. 5B10
3. 4Be9
4. 7N14
Which of the following rays are not electromagnetic waves?
1. X-rays
2. γ-rays
3. β-rays
4. Heat rays
A nuclear reaction is given by
represents:
1. β-decay
2. γ-decay
3. fusion
4. fission