Question
What is the importance of heavy water?

Answer

Heavy water has been used in nuclear reactors. In nuclear reactors, chain reactions occur very fast. In order to slow down the rate of these reactions, heavy water is used as a moderator. Actually, the speed of neutrons is slowed down by passing through heavy water before bringing about fission of uranium.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Calculate the concentration of HBr solution in $\mathrm{mol} \mathrm{~L}^{-1}$ in a sample which has density $1.5 \mathrm{ml}^{-1}$ and mass percent of HBr being $48 \%$. [Molar mass of $\left.\mathrm{HBr}=81 \mathrm{g} \mathrm{~mol}^{-1}\right]$
Complete the following reactions:
  1. $\text{Zn}+\text{NaOH}\xrightarrow{\ \ \ \ \ \ \ }$
  2. $\text{MnO}_4^-+\text{H}_2\text{O}_2\xrightarrow{\ \ \ \ \ \ \ \ \ }$
  3. $\text{Ca(HCO}_3)_2+\text{Ca(OH)}_2\xrightarrow{\ \ \ \ \ \ \ \ \ \ }$
Correct the following electronic configuration of the elements in the ground state.
  1. $1\text{s}^2\ 2\text{s}^1,2\text{p}^2_\text{x},2\text{p}^2_\text{y},2\text{p}^2_\text{z},3\text{s}62,2\text{p}^1_\text{x}$
  2. $1\text{s}^2\ 2\text{s}^1,2\text{p}^1_\text{x},2\text{p}^1_\text{y},2\text{p}^1_\text{z}$
  3. $1\text{s}^2\ 2\text{s}^1,2\text{p}^6,3\text{s}^2,3\text{p}^6,3\text{d}^5$
  4. $1\text{s}^2\ 2\text{s}^2,2\text{p}^6,3\text{p}^6,3\text{d}^4,4\text{s}^2$
Write the resonance structures of $\text{CO}_3^{2-}$ and $\text{HCO}_3^-.$
Among the elements B, Al, C and Si:
  1. Which has the highest first ionization enthalpy?
  2. Which has the most negative electron gain enthalpy?
  3. Which has the largest atomic radius?
Give reasons.
1 mole of an ideal gas undergoes reversible isothermal expansion from an initial volume of $V _1$ to a final volume of $10 V_1$ and does 10 kJ of work. The initial pressure was $1 \times 10^7 Pa$.
1. Calculate $V _1$.
2. If there were 2 moles of gas what must its temperature have been?
Write chemical reactions of:
  1. Wurtz-Fittig reaction.
  2. Kolbe's electrolytic method.
  3. B-Elimination reaction.
  1. Write IUPAC name of the following:
$\text{CH}_3\text{CHCH}\equiv\text{CH}\\\ \ \ \ \ \ \ \ \ |\\ \ \ \ \ \ \ \ \ \text{CH}=\text{CH}_2$
  1. Draw the structure of Pent-4-en-2-ol.
  2. What is nucleophile? Give one example.
Carbon and silicon both belong to the group 14, but inspite of the stoichiometric similarity, the dioxides, (i.e., carbon dioxide and silicon dioxide), differ in their structures. Comment.
Identify the type of redox reaction taking place in the following.
Image