Q. No.Given below are two statements:
| Assertion (A): | Isotopes of an element can be separated by using a mass spectrometer. |
| Reason (R): | Separation of isotopes is possible because of the difference in electron numbers of isotopes. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | Both (A) and (R) are False. |
Subtopic: Types of Decay |
66%
Level 2: 60%+
Hints
In the nuclear decay given below:
\({ }_Z^A \mathrm X \rightarrow{ }_{Z+1}^A \mathrm Y \rightarrow{ }_{Z-1}^{A-4} \mathrm B \rightarrow{ }_{Z-1}^{A-4} \mathrm B\)
the particles emitted in the sequence are:
| 1. | \(\beta, \alpha, \gamma \) | 2. | \(\gamma, \beta, \alpha \) |
| 3. | \(\beta, \gamma, \alpha \) | 4. | \(\alpha, \beta, \gamma\) |
Subtopic: Types of Decay |
89%
Level 1: 80%+
AIPMT - 2009
Hints
A nuclear reaction is given by;
\({}_{Z}^{A}\mathrm{X}\rightarrow {}_{Z+1}^{A}\mathrm{Y}+{}_{-1}^{0}\mathrm{e}+\nu\)
represents:
1. \(\beta\text-\)decay
2. \(\gamma\text-\)decay
3. fusion
4. fission
\({}_{Z}^{A}\mathrm{X}\rightarrow {}_{Z+1}^{A}\mathrm{Y}+{}_{-1}^{0}\mathrm{e}+\nu\)
represents:
1. \(\beta\text-\)decay
2. \(\gamma\text-\)decay
3. fusion
4. fission
Subtopic: Types of Decay |
92%
Level 1: 80%+
AIPMT - 2003
Hints
An atomic nucleus \({}_{90}^{232}\mathrm{Th}\) emits several \(\alpha\) and \(\beta\) radiations and finally reduces to \({}_{82}^{208}\mathrm{Pb}.\) It must have emitted:
1. \(4\alpha~\text{and}~2\beta\)
2. \(6\alpha~\text{and}~4\beta\)
3. \(8\alpha~\text{and}~24\beta\)
4. \(4\alpha~\text{and}~16\beta\)
1. \(4\alpha~\text{and}~2\beta\)
2. \(6\alpha~\text{and}~4\beta\)
3. \(8\alpha~\text{and}~24\beta\)
4. \(4\alpha~\text{and}~16\beta\)
Subtopic: Types of Decay |
85%
Level 1: 80%+
Hints
What is the respective number of \(\alpha\) and \(\beta\text-\) particles emitted in the following radioactive decay?
\({}_{90}^{200}\mathrm{X}\rightarrow {}_{80}^{168}\mathrm{Y}\)
\({}_{90}^{200}\mathrm{X}\rightarrow {}_{80}^{168}\mathrm{Y}\)
| 1. | \(6\) and \(8\) | 2. | \(6\) and \(6\) |
| 3. | \(8\) and \(8\) | 4. | \(8\) and \(6\) |
Subtopic: Types of Decay |
85%
Level 1: 80%+
Hints
After two alpha decays and four beta(-ve) decays, the atomic number:
| 1. | decreases by \(4\) and the mass number remains the same. |
| 2. | remains the same but the mass number increases by \(4.\) |
| 3. | remains the same but the mass number decreases by \(8.\) |
| 4. | increases but the mass number remains the same. |
Subtopic: Types of Decay |
85%
Level 1: 80%+
Hints
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. |
Subtopic: Types of Decay |
83%
Level 1: 80%+
Hints
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. |
Subtopic: Types of Decay |
84%
Level 1: 80%+
NEET - 2020
Hints
Links
A nucleus \({ }_{{n}}^{{m}} \mathrm{X}\) emits one \(\alpha\text -\text{particle}\) and two \(\beta\text- \text{particle}\) The resulting nucleus is:
| 1. | \(^{m-}{}_n^6 \mathrm{Z} \) | 2. | \(^{m-}{}_{n}^{4} \mathrm{X} \) |
| 3. | \(^{m-4}_{n-2} \mathrm{Y}\) | 4. | \(^{m-6}_{n-4} \mathrm{Z} \) |
Subtopic: Types of Decay |
82%
Level 1: 80%+
AIPMT - 2011
Hints
When a deuterium is bombarded on \({}_{8}^{16}\mathrm{O}\) nucleus, an \(\alpha\text-\)particle is emitted, then the product nucleus is:
| 1. | \({}_{7}^{13}\mathrm{N}\) | 2. | \({}_{5}^{10}\mathrm{B}\) |
| 3. | \({}_{4}^{9}\mathrm{Be}\) | 4. | \({}_{7}^{14}\mathrm{N}\) |
Subtopic: Types of Decay |
77%
Level 2: 60%+
Hints
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