NEET 2026
- Exam
- NEET
- Year
- 2026
- Subject
- Chemistry
- Chapter
- d and f Block Elements
NEET 2026 · Chemistry · d and f Block Elements
Match List I with List II : List I (Transition...
Match List I with List II :
Choose the correct answer from the options given below :
| List I (Transition metal/compound/complex) | List II (Catalytic Role) |
|---|---|
| A. | I. Preparation of ammonia from mixture |
| B. | II. Polymerisation of alkynes |
| C. | III. Preparation of from |
| D. Ni complex | IV. Oxidation of ethyne to ethanal |
Choose the correct answer from the options given below :
Options
- AA-III, B-IV, C-I, D-II
- BA-IV, B-I, C-III, D-II
- CA-II, B-I, C-IV, D-III
- DA-III, B-I, C-IV, D-II
Correct answer
D. A-III, B-I, C-IV, D-II
Step-by-step solution
is used as a catalyst in the Contact process for the oxidation of to during the preparation of . Thus, A matches with III.
Finely divided is used as a catalyst in the Haber process for the preparation of ammonia from and mixture. Thus, B matches with I.
is used as a catalyst in the Wacker process for the oxidation of ethene (referred to as ethyne in the given options) to ethanal. Thus, C matches with IV.
complexes are used as catalysts for the polymerisation of alkynes (e.g., polymerisation of ethyne to cyclooctatetraene). Thus, D matches with II.
The correct matching is A-III, B-I, C-IV, D-II.
Answer: A-III, B-I, C-IV, D-II
Finely divided is used as a catalyst in the Haber process for the preparation of ammonia from and mixture. Thus, B matches with I.
is used as a catalyst in the Wacker process for the oxidation of ethene (referred to as ethyne in the given options) to ethanal. Thus, C matches with IV.
complexes are used as catalysts for the polymerisation of alkynes (e.g., polymerisation of ethyne to cyclooctatetraene). Thus, D matches with II.
The correct matching is A-III, B-I, C-IV, D-II.
Answer: A-III, B-I, C-IV, D-II