| (a) | Cr(CO)6 is an organometallic compound. |
| (b) | Wilkinson's catalyst is used for the hydrogenation of alkenes, and it is a ruthenium complex. |
| (c) | In black and white photography, hypo solution is used to dissolve the undecomposed AgBr. |
| 1. | (a) and (b) only | 2. | (b) and (c) only |
| 3. | (a) and (c) only | 4. | (a), (b), and (c) |
| 1. | Na2EDTA | : | Estimation of hardness of water |
| 2. | DMG(dimethylglyoxime) | : | Analysis of Ni2+ (aq) |
| 3. | [RhCl(PPh3)5] | : | Wilkinson's catalyst |
| 4. | EDTA | : | Used for the treatment of lead poisoning |
| Assertion (A): | \(CO\) is referred as \(\pi\) acid ligand. |
| Reason (R): | In \(CO\), vacant \(π^{*} \) type orbitals are present. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |