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. |
Titanium tetrachloride organoaluminium co-catalyst is used in which of the following polymerisation? |
| A. | Ziegler-Natta polymerization |
| B. | Anionic vinyl polymerization |
| C. | Free-radical polymerization |
| D. | Metathesis polymerization |
| Answer» B. Anionic vinyl polymerization | |
| 2. |
Which catalyst is used for the coordination polymerisation of polybutadiene? |
| A. | titanium tetrachloride organo-aluminium co-catalyst |
| B. | kaminsky catalyst |
| C. | neodymium-based catalyst |
| D. | organo-aluminium co-catalyst |
| Answer» D. organo-aluminium co-catalyst | |
| 3. |
Homogenous Ziegler Natta coordination polymerization occurs via which mechanism? |
| A. | Cossee Arlman mechanism |
| B. | Mechanism of free-radical polymerization |
| C. | Cationic polymerization mechanism |
| D. | Anionic polymerization mechanism |
| Answer» B. Mechanism of free-radical polymerization | |
| 4. |
Which of the following is true about heterogeneous Ziegler Natta polymerisation? |
| A. | This is based on titanium tetrachloride |
| B. | This is based on Kaminsky catalyst |
| C. | This is based on neodymium-based catalyst |
| D. | This is based on titanium tetrachloride organo-aluminium co-catalyst |
| Answer» E. | |
| 5. |
Which of the following olefine undergo coordination polymerisation in the presence of Ziegler-Natta catalysts? |
| A. | vinyl chloride |
| B. | vinyl ethers |
| C. | acrylate esters |
| D. | ethylene |
| Answer» E. | |
| 6. |
Which of the following is true about homogenous Ziegler Natta polymerisation? |
| A. | This is based on titanium tetrachloride organoaluminium co-catalyst |
| B. | This is based on Kaminsky catalyst |
| C. | This is based on neodymium-based catalyst |
| D. | This is based on organoaluminium co-catalyst |
| Answer» C. This is based on neodymium-based catalyst | |
| 7. |
Which catalyst is commonly used in coordination chain polymerization? |
| A. | nickel |
| B. | ziegler- Natta catalyst |
| C. | zeolite |
| D. | platinum |
| Answer» C. zeolite | |
| 8. |
Which of the following is true about coordination polymerisation? |
| A. | radical, coordination, anionic, or cationic polymerization, depending on the type of initiation |
| B. | polymerization that is catalysed by transition metal salts and complexes |
| C. | monomers react by eliminating small molecules like H<sub>2</sub>O, NH<sub>3</sub>, CH<sub>2</sub>O and NaCl in a repetitive manner, Indefinite growth of the polymer occurs at both ends |
| D. | a mixture of more than one (or different) monomeric species is allowed to polymerize |
| Answer» C. monomers react by eliminating small molecules like H<sub>2</sub>O, NH<sub>3</sub>, CH<sub>2</sub>O and NaCl in a repetitive manner, Indefinite growth of the polymer occurs at both ends | |