Explore topic-wise InterviewSolutions in Class 11.

This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your Class 11 knowledge and support exam preparation. Choose a topic below to get started.

1.

Hydrogen adsorabed on palladium is known asA. atomicB. ortho HC. occluded HD. heavy H

Answer» Correct Answer - C
Discussion
2.

`D_(2)O` is preferred to `H_(2)O`, as a moderator, in nuclear reactors becauseA. `D_(2)O` slows down fast neutrons betterB. `D_(2)O` has high specific heatC. `D_(2)O` is cheaperD. None of these.

Answer» Correct Answer - D<br>`H_(2)O` absorbs neutrons more than `D_(2)O` and this decreases the fission process.
Discussion
3.

Ordinary water is not used as a moderator in nuclear reactors becauseA. it cannot slow down fast moving neutronsB. it cannot remove the heat from the reactor coreC. it absorbs the fast moving neutronsD. of its corrosive action on metallic parts of the nuclear reactor.

Answer» Correct Answer - C<br>Ordinary water absorbs fast moving neutrons, thus stopping the process of nuclear fission.
Discussion
4.

`D_(2)O` is preferred to `H_(2)O`, as a moderator, in nuclear reactors becauseA. `D_(2)O` slow down fast neutrons betterB. `D_(2)O` has high specific heatC. `D_(2)O` is cheaperD. None of these

Answer» Correct Answer - d<br>`D_(2)O` absorbs neutrons more than `H_(2)O` and this decreases the number of neutrons for the fission process.
Discussion
5.

Which of the following grouups of ioins makes the water hard ?A. Sodium and bicarbonateB. Magnesium and chlorideC. Potassium and sulphateD. Ammonium and chloride

Answer» Correct Answer - B<br>Temporary hardness is due to the presence of bicarbonates of calcium and magnesium and permanent hardness is due to the sulphates or chlorides of both of calcium and magnesium.
Discussion