MCQOPTIONS
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MCQOPTIONS
This section includes 3 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. |
Which of the following statements is wrong? |
| A. | The base-catalysed α-halogenation of propanone is first order in the concentration of the base |
| B. | The rate constant for the base-catalysed α-halogenation of propanone decreases in the order Cl2 > Br2 > I2 |
| C. | The base-catalysed α-halogenation of propanone proceeds easily to give 1,1,1-trihalopropanone |
| D. | Polyhalogenation of propanone is difficult under acidic conditions, but the products are the same as those obtained under basic conditions |
| Answer» C. The base-catalysed α-halogenation of propanone proceeds easily to give 1,1,1-trihalopropanone | |
| 2. |
A malonic ester synthesis of a carboxylic acid proceeds by alkylation of the enolate of the malonic ester followed by ester hydrolysis and decarboxylation of the β-dicarboxylic acid. Which of the following carboxylic acids is difficult to prepare by this method? |
| A. | PhCH2CH2CO2H |
| B. | (CH3)2CHO2H |
| C. | PhCH2CO2H |
| Answer» D. | |
| 3. |
Which of the following statements is wrong?$ |
| A. | The base-catalysed α-halogenation of propanone is first order in the concentration of the base |
| B. | The rate constant for the base-catalysed α-halogenation of propanone decreases in the order Cl<sub>2</sub> > Br<sub>2</sub> > I<sub>2</sub> |
| C. | The base-catalysed α-halogenation of propanone proceeds easily to give 1,1,1-trihalopropanone |
| D. | Polyhalogenation of propanone is difficult under acidic conditions, but the products are the same as those obtained under basic conditions |
| Answer» C. The base-catalysed ‚âà√≠¬¨¬±-halogenation of propanone proceeds easily to give 1,1,1-trihalopropanone | |