Question

Match the chemical substances under Column I with their applications under Column II.​

Column I	Column II
(a) ${Ca(OCl}_2)$	(i) Preparation of glass​
(b) ${Al}_2{O}_3$	(ii) Soap
(c) ${Na}_2{CO}_3$${.10H}_{2}O$	(iii) Disinfect water​
(d) $C_{17}{H}_{35}COONa$	(iv) Advanced ceramic​

• A. a-(ii); b-(i); c-(iv); d-(iii)​
• B. a-(iii); b-(iv); c-(i); d-(ii)​​
• C. a-(iii); b-(ii); c-(iv); d-(i)​
• D. a-(ii); b-(iv); c-(i); d-(iii)​​

Answer 1

The correct option is B a-(iii); b-(iv); c-(i); d-(ii)​​

• ${Ca(OCl}_2)$ has disinfectant properties and hence it is used to disinfect water.
• ${Al}_2{O}_3$ is used as an advanced ceramic.
• ${Na}_2{CO}_3$${.10H}_{2}O$ is washing soda and is used in the preparation of glass.
• $C_{17}{H}_{35}COONa$ is a sodium salt of long chain fatty acid which is an example of soap.

The correct answer is option (c).