MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Organic Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
For metal olefin complexes (i) [PtCl3(C2F4)]– and (ii) [PtCl3(C2H4)]–, which of the following is the correct statement? |
| A. | carbon-carbon bond length is same both in (i) and (ii) |
| B. | carbon-carbon bond length in (i) is smaller |
| C. | carbon-carbon bond length in (ii) is smaller |
| D. | a metallacycle is formed in each complex |
| Answer» C. carbon-carbon bond length in (ii) is smaller | |
| 2. |
Which of the following is the incorrect statement about Zeise’s salt? |
| A. | Zeise’s salt is diamagnetic |
| B. | Oxidation state of Pt in Zeis’s salt is +2 |
| C. | All the Pt-Cl bond length in Zeise’s salt are equal |
| D. | C-C bond length of ethylene moiety in Zeise’s salt longer than that of free ethylene molecule |
| Answer» D. C-C bond length of ethylene moiety in Zeise’s salt longer than that of free ethylene molecule | |
| 3. |
How many M — M bonds are present in [Cp Mo(CO3)]2? |
| A. | 1 |
| B. | 2 |
| C. | 0 |
| D. | 4 |
| Answer» D. 4 | |
| 4. |
Which of the following complexes show easy oxidation? |
| A. | (η5-C5H5)2Fe |
| B. | (η5-C5H5)2Ru |
| C. | (η5-C5H5)2Co |
| D. | (η5-C5H5)2Co+ |
| Answer» D. (η5-C5H5)2Co+ | |
| 5. |
If complex [W(Cp)2(CO)2] follows 18e- rule. What is Hapticity of Cp? |
| A. | 5 and 5 |
| B. | 3 and 5 |
| C. | 3 and 3 |
| D. | 1 and 5 |
| Answer» C. 3 and 3 | |
| 6. |
Which of the following is the neutral complex which follows the 18- electron rule? |
| A. | (η5-C5H5)Fe(CO)2 |
| B. | (η5-C5H5)2Mo(CO)3 |
| C. | (η5-C5H5)2Co |
| D. | (η5-C5H5)2Re(η6-C6H6) |
| Answer» E. | |
| 7. |
What is the oxidation state of molybdenum in [η7-tropylium) Mo(CO)3]+? |
| A. | 2 |
| B. | +1 |
| C. | 0 |
| D. | -1 |
| Answer» D. -1 | |
| 8. |
Which of the following complex is in which organic ligand is having only bond with metal? |
| A. | W(CH3)6 |
| B. | K[PtCl3(C2H4)] |
| C. | (η5-C5H5)2Fe |
| D. | (η5-C6H6)2Ru |
| Answer» B. K[PtCl3(C2H4)] | |
| 9. |
Which of the following complex has a highest oxidation state of metal? |
| A. | (η6-C6H6)2Cr |
| B. | Mn(CO)5Cl |
| C. | Na2[Fe(CO)4] |
| D. | K[Mn(CO)5] |
| Answer» D. K[Mn(CO)5] | |
| 10. |
What are oxidation states of metal ion in following complexes? |
| A. | 2, 4, 2, 2 |
| B. | 2, 0, 2, 1 |
| C. | 2, 0, 2, 2 |
| D. | 0, 0, 0, 2View Answer |
| Answer» D. 0, 0, 0, 2View Answer | |