Some statements about water are given below:
 

(a)	Heavy water is used as a moderator in nuclear reactors.
(b)	Heavy water is more associated than ordinary water.
(c)	Heavy water is a more effective solvent than ordinary water.

 

Which of the above statements are correct?

1. (a), (b), and (c)

2. (b) and (c)

3. (a) and (c)

4. (a) and (b)

The pair that on reaction will not evolve $H_2$ gas is  

1.  Copper and HCl (aqueous)
2.  Iron and steam
3.  Iron and $H_{2}S{O}_4$ (aqueous)
4.  Sodium and ethyl alcohol

 $H_2{O}_{\mathrm{2 }}$on oxidation gives:

1. $O^{-2}$

2. $O{H}^{-}$

3. $O_2^{-}$

4. $O_2$

Pure water can be obtained from sea water by:

1.  Centrifugation
2.  Plasmolysis
3.  Reverse osmosis
4.  Sedimentation

Tritium, a radioactive isotope of hydrogen, emits which of the following particles?

1. Gamma $\left(\gamma \right)$

2. Neutron (n)

3. Beta $\left({\beta }^{-}\right)$

4. Alpha $\left(\alpha \right)$

Match the following and identify the correct option

Match List - I with List - II.

Match list-I with list-II:

Choose the correct answer from the options given below: