- 1(current)
Q. No.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. | \(\alpha, \beta, \gamma\) |
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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
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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. |
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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. |
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-particle consists of:
| 1. | 2 protons only |
| 2. | 2 protons and 2 neutrons only |
| 3. | 2 electrons, 2 protons, and 2 neutrons |
| 4. | 2 electrons and 4 protons only |
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The number of beta particles emitted by a radioactive substance is twice the number of alpha particles emitted by it. The resulting daughter is an:
1. Isobar of a parent.
2. Isomer of a parent.
3. Isotone of a parent.
4. Isotope of a parent.
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1. \({ }_{7}^{14} N\)
2. \({ }_{5}^{13} B\)
3. \({ }_{7}^{13} N\)
4. \({ }_{6}^{13} C\)
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- 1(current)
Q. No.
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