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Question
Mark the correct choice as
- Assertion: In a β - decay, the neutron number decreases by one.
- Reason: In β - decay atomic number increases by one.
Options
If both the assertion and the reason are true and the reason is the correct explanation of the assertion.
If both the assertion and the reason are true, but the reason is not the correct explanation of the assertion.
Assertion is true, but the reason is false.
Assertion is false, but the reason is true.
Solution
The assertion is false, but the reason is true.
Explanation: In β – decay there is no change in the mass number of the daughter nucleus but the atomic number increases by one.
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RELATED QUESTIONS
In which of the following, no change in mass number of the daughter nuclei takes place
- α decay
- β decay
- γ decay
- neutron decay
Gamma radiations are dangerous because
________ aprons are used to protect us from gamma radiations.
_______ is used to measure exposure rate of radiation in humans.
The radio isotope of ________ helps to increase the productivity of crops.
Match: III
| a. | Soddy Fajan | Natural radioactivity |
| b. | Irene Curie | Displacement law |
| c. | Henry Bequerel | Mass energy equivalence |
| d. | Albert Einstein | Artificial Radioactivity |
A cobalt specimen emits induced radiation of 75.6 millicurie per second. Convert this disintegration in to becquerel (one curie = 3.7 × 1010 Bq)
Who discovered natural radioactivity?
Give the SI unit of radioactivity.
Which material protects us from radiation?
