MCQOPTIONS
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MCQOPTIONS
This section includes 8 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 monomer units of ethylene are present in the given polyethylene formed by? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» E. | |
| 2. |
Which of the following happens in termination step of the free radical polymerisation? |
| A. | decomposition of initiator |
| B. | addition of free radical to monomer |
| C. | addition of monomer molecules to the growing chains |
| D. | disproportionation |
| Answer» E. | |
| 3. |
Which of the following happens in propagation step of the free radical polymerisation? |
| A. | Decomposition of initiator |
| B. | Renewal of inhibitor |
| C. | Addition of monomer molecules to the growing chains |
| D. | Disproportionation |
| Answer» C. Addition of monomer molecules to the growing chains | |
| 4. |
What is the name for polymers with Z groups only on one side of the carbon chain? |
| A. | Enatiometric |
| B. | Atactic |
| C. | Syndiotactic |
| D. | Isotactic |
| Answer» E. | |
| 5. |
Which of the following reagents may be used to initiate radical polymerization of styrene? |
| A. | HCl |
| B. | Peroxides |
| C. | Hydroxide ion |
| D. | BF<sub>3</sub> |
| Answer» C. Hydroxide ion | |
| 6. |
Which of the following happens in initiation step of the free radical polymerisation? |
| A. | Decomposition of initiator |
| B. | Renewal of inhibitor |
| C. | Addition of monomer molecules to the growing chains |
| D. | Disproportionation |
| Answer» B. Renewal of inhibitor | |
| 7. |
Why is vinyl polymerization also known as addition polymerization? |
| A. | monomers are unsaturated compounds |
| B. | it is a chain reaction |
| C. | most monomers contain (CH<sub>2</sub>=CH─) group |
| D. | it proceeds through radical |
| Answer» D. it proceeds through radical | |
| 8. |
Which of the following is an initiator molecule in the free radical polymerisation? |
| A. | Benzoyl peroxide |
| B. | Sulphuric acid |
| C. | Potassium permanganate |
| D. | Chromium oxide |
| Answer» B. Sulphuric acid | |