In the nuclear decay given below:
the particles emitted in the sequence are:
1. | \(\beta, \alpha, \gamma \) | 2. | \(\gamma, \beta, \alpha \) |
3. | \(\beta, \gamma, \alpha \) | 4. | \(\alpha, \beta, \gamma\) |
A nuclear reaction is given by
represents:
1. β-decay
2. γ-decay
3. fusion
4. fission
An atomic nucleus emits several and radiations and finally reduces to . It must have emitted:
1. 4 and 2
2. 6 and 4
3. 8 and 24
4. 4 and 16
What is the respective number of and -particles emitted in the following radioactive decay?
\(X^{200}_{90}\rightarrow Y^{168}_{80}\)
1. | 6 and 8 | 2. | 6 and 6 |
3. | 8 and 8 | 4. | 8 and 6 |
After two alpha decays and four beta(-ve) decays, the atomic number:
1. | Decreases by 4 and mass number remains same. |
2. | Remains the same but the mass number increases by 4. |
3. | Remains the same but mass number decreases by 8. |
4. | Increases but mass number remains same. |
In a radioactive decay process, the negatively charged emitted -particles are:
1. | The electrons present inside the nucleus. |
2. | The electrons produced as a result of the decay of neutrons inside the nucleus. |
3. | The electrons produced as a result of collisions between atoms. |
4. | The electrons orbiting around the nucleus. |
What happens to the mass number and the atomic number of an element when it emits \(\gamma\text{-}\)radiation?
1. | mass number decreases by four and atomic number decreases by two. |
2. | mass number and atomic number remain unchanged. |
3. | mass number remains unchanged while the atomic number decreases by one. |
4. | mass number increases by four and the atomic number increases by two. |
A nucleus \({ }_{{n}}^{{m}} {X}\) emits one \(\alpha\text -\text{particle}\) and two \(\beta\text- \text{particle}\) The resulting nucleus is:
1. \(^{m-}{}_n^6 Z \)
2. \(^{m-}{}_{n}^{4} X \)
3. \(^{m-4}_{n-2}Y\)
4. \(^{m-6}_{n-4} Z \)
When a deuterium is bombarded on nucleus, an -particle is emitted, then the product nucleus is:
1.
2.
3.
4.
During negative -decay:
1. | a neutron converts into proton. |
2. | a proton converts into neutron. |
3. | neutron to proton ratio increases. |
4. | None of these |