Question

Assertion :Nuclear fusion are made at very high temperature, $i.e$., ${10}^7$K. Reason: Nuclear fusion reactions are exoergic.

• A. $S$ is correct but $E$ is wrong
• B. $S$ is wrong but $E$ is correct
• C. Both $S$ and $E$ are correct and $E$ is correct explanation of $S$
• D. Both $S$ and $E$ are correct but $E$ is not correct explanation of $S$

Answer 1

The correct option is D Both $S$ and $E$ are correct but $E$ is not correct explanation of $S$

Nuclear fusion reactions are exoergic. Large amount of energy is released due to the mass defect.
These reactions occur at very high temperature (about ${10}^7$ K) and high pressure.
For example, hydrogen bomb and nuclear reactions occurring in the sun.
Thus, Both S and E are correct but E is not correct explanation of S.