MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following is the most activating in electrophilic aromatic substitution? |
| A. | -NO<sub>2</sub> |
| B. | -NHCOCH<sub>3</sub> |
| C. | -CN |
| D. | -NH<sub>2</sub> |
| Answer» E. | |
| 2. |
What is the electrophile in the acylation of benzene? |
| A. | AlCl<sub>3</sub> |
| B. | CO<sup>+</sup> |
| C. | Cl<sup>+</sup> |
| D. | R-CO<sup>+</sup> |
| Answer» E. | |
| 3. |
Which of the following aromatic compounds undergo Friedel Crafts alkylation with methyl chloride and aluminum chloride? |
| A. | Benzoic acid |
| B. | Nitrobenzene |
| C. | Toluene |
| D. | Aniline |
| Answer» D. Aniline | |
| 4. |
What is the electrophile in the electrophilic substitution reaction of benzene using oleum and conc. H2SO4? |
| A. | SO<sub>3</sub> |
| B. | NO<sub>3</sub> |
| C. | NO<sub>2</sub><sup>+</sup> |
| D. | NO<sup>+</sup> |
| Answer» B. NO<sub>3</sub> | |
| 5. |
What will be the product formed when phenol reacts with Br2 in CCl4 medium? |
| A. | 3-Bromophenol |
| B. | 4- Bromophenol |
| C. | 3,5-Dibromophenol |
| D. | 2,4,6-Tribromophenol |
| Answer» C. 3,5-Dibromophenol | |