MCQOPTIONS
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MCQOPTIONS
This section includes 5 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. |
How many isomers of C4H8O when reacts with CH3MgBr followed by acidification to alcohol (only consider carbonyl isomers and Including stereoisomers)? |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| Answer» B. 3 | |
| 2. |
How can we prepare RR R OH by the action of excess of a suitable Grignard reagent on which of the following reactants? |
| A. | nitrile or an aldehyde |
| B. | ester or an alcohol |
| C. | aldehyde or a ketone |
| D. | ketone or an ester |
| Answer» B. ester or an alcohol | |
| 3. |
How acetophenone can be converted to phenol by reaction? |
| A. | m-CPBA followed by base catalysed hydrolysis |
| B. | conc. HN0<sub>3</sub> |
| C. | iodine and NaOH |
| D. | Singlet oxygen followed by base catalysed hydrolysis product |
| Answer» B. conc. HN0<sub>3</sub> | |
| 4. |
Which is the mildest reducing agent which reduces only carbonyl group in presence of nitro, carboxyl, double bond and ester groups? |
| A. | LiAIH<sub>4</sub> |
| B. | Na-NH<sub>3</sub> |
| C. | NaBH<sub>4</sub> |
| D. | H<sub>2</sub>-Ni |
| Answer» D. H<sub>2</sub>-Ni | |
| 5. |
Which of the will give effective reduction of 3-hexyne to trans-3-hexene? |
| A. | H<sub>2</sub>/Lindlar s catalyst |
| B. | Na/liq. NH<sub>3</sub> |
| C. | Fe/NaCl |
| D. | DIBAL |
| Answer» C. Fe/NaCl | |