Question

Match the technologies in Group 1 with the entries in Group 2:

Group 1	Group 2
(P) Urea manufacture	(I) Microencapsulation
(Q) Coal gasification	(II) Ultra-low sulphur diesel
(R) Controlled release of chemicals	(III) Shale oil
(S) Deep hydro-desulphurization	(IV) Prilling tower
	(V) Gas hydrates
	(VI) Gas – solid non-catalytic reaction

• A. P-I, Q-V, R-II, S-VI
• B. P-IV, Q-VI, R-I, S-II
• C. P-IV, Q-I, R-III, S-II
• D. P-V, Q-VI, R-IV, S-II

Hint:

When matching technologies, focus on the specific industrial processes and their associated technologies. For instance, urea manufacture typically involves prilling towers, and gasification involves non-catalytic reactions.

Answer 1

The Correct Option is B

- Urea manufacture is associated with the use of Prilling tower, so \( P \) corresponds to \( IV \). 
- Coal gasification typically involves gas-solid non-catalytic reactions, so \( Q \) corresponds to \( VI \).
- Controlled release of chemicals is related to microencapsulation, so \( R \) corresponds to \( I \). 
- Deep hydro-desulphurization is linked with ultra-low sulphur diesel, so \( S \) corresponds to \( II \). 
Conclusion: 
The correct matching is (B) P-IV, Q-VI, R-I, S-II.