MCQOPTIONS
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MCQOPTIONS
This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Terylene is a polyamide. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
What are the monomers of dacron? |
| A. | Ethane-1,2-diol and terephthalic acid |
| B. | Ethylene glycol and phthalic acid |
| C. | 1,3-Butadiene and terephthalic acid |
| D. | Ethylene glycol and 1,3-butadiene |
| Answer» B. Ethylene glycol and phthalic acid | |
| 3. |
Which of the following is used in non-stick pans? |
| A. | HDP |
| B. | LDP |
| C. | Teflon |
| D. | Orlon |
| Answer» D. Orlon | |
| 4. |
Polymerisation of vinyl cyanide with peroxide catalyst forms _______ |
| A. | PVC |
| B. | PAN |
| C. | PET |
| D. | HDP |
| Answer» C. PET | |
| 5. |
Which of the following is not suitable for the polymerisation of ethene to form high-density polythene? |
| A. | Presence of Ziegler-Natta catalyst |
| B. | Temperature of 500K |
| C. | Pressure of 7 atmospheres |
| D. | Hydrocarbon solvent |
| Answer» C. Pressure of 7 atmospheres | |
| 6. |
LDP is used in the making of electrical wires. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
Identify the most suitable catalyst for the reaction shown. |
| A. | Dioxygen |
| B. | Ziegler-Natta catalyst |
| C. | Persulphate |
| D. | AlCl3 |
| Answer» D. AlCl3 | |
| 8. |
Which of the following statements is correct regarding LDP and HDP? |
| A. | Both have different monomers |
| B. | Both have same structures |
| C. | Both have similar preparation conditions |
| D. | Both are chemically inert |
| Answer» E. | |
| 9. |
Identify the chain initiation step of the polymerisation of ethene in the presence of benzoyl peroxide initiator, from the following? |
| A. | C6H5• + C2H4 = C6H5-CH2-CH2• |
| B. | C6H5-CH2-CH2• + C2H4 = C6H5-CH2-CH2-CH2-CH2• |
| C. | C6H5-CH2-CH2-CH2-CH2• = C6H5-(-CH2-CH2-)n-CH2• |
| D. | C6H5-(-CH2-CH2-)n-CH2• + C6H5-(-CH2-CH2-)n-CH2• = C6H5-(-CH2-CH2-)n-C6H5 |
| Answer» B. C6H5-CH2-CH2• + C2H4 = C6H5-CH2-CH2-CH2-CH2• | |
| 10. |
In free radical mechanism, the step in which two very large free radicals combine with each other is called the _______ step. |
| A. | chain initiating |
| B. | chain propagating |
| C. | chain growth |
| D. | chain terminating |
| Answer» E. | |
| 11. |
Which of the following is not a suitable initiator for free radical addition polymerisation reaction? |
| A. | Acetyl peroxide |
| B. | Benzoyl peroxide |
| C. | tert-Butyl peroxide |
| D. | Benzoquinone |
| Answer» E. | |
| 12. |
Which of the following is not a type of addition polymerisation? |
| A. | Free radical polymerisation |
| B. | Polycondensation polymerisation |
| C. | Anionic polymerisation |
| D. | Cationic polymerisation |
| Answer» C. Anionic polymerisation | |
| 13. |
Which of the following cannot undergo addition polymerisation? |
| A. | Ethane |
| B. | Ethene |
| C. | Propylene |
| D. | Vinyl benzene |
| Answer» B. Ethene | |
| 14. |
Addition polymerisation is also known as _________ |
| A. | copolymerisation |
| B. | homopolymerisation |
| C. | step growth polymerisation |
| D. | chain growth polymerisation |
| Answer» E. | |