MCQOPTIONS
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MCQOPTIONS
This section includes 32 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The reverse of esterification is ____________ |
| A. | Hydrolysis |
| B. | Condensation |
| C. | Polymerisation |
| D. | Centrifugation |
| Answer» B. Condensation | |
| 2. |
In esterification, the nucleophile is _________ and the leaving group is ____________ |
| A. | Alcohol, ester |
| B. | Ester, alcohol |
| C. | Water, alcohol |
| D. | Alcohol, water |
| Answer» E. | |
| 3. |
The polymerisation in which propagating centers do not undergo either transfer or termination reactions is called ____________ |
| A. | Addition polymerisation |
| B. | Co-polymerisation |
| C. | Living polymerisation |
| D. | Dead polymerisation |
| Answer» D. Dead polymerisation | |
| 4. |
Which of the following monomer cannot be polymerised by radical polymerisation? |
| A. | Butadiene |
| B. | Isobutylene |
| C. | Vinyl chloride |
| D. | Acrylates |
| Answer» C. Vinyl chloride | |
| 5. |
Radical polymerisation is not sensitive to changes in the polarity. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 6. |
The temperature at which the ionic polymerisation is carried out is ____________ |
| A. | 1000C |
| B. | 500C |
| C. | -1000C |
| D. | 00C |
| Answer» E. | |
| 7. |
The co-polymers having branched structures in which the monomer segments on the backbone and branches differ are called ____________ |
| A. | Alternate |
| B. | Graft |
| C. | Random |
| D. | Block |
| Answer» C. Random | |
| 8. |
The Ziegler Natta catalyst is formed between _____________ |
| A. | Triethyl aluminium and titanium halide |
| B. | Triethyl aluminium and silver halide |
| C. | Triethyl aluminium and platinum halide |
| D. | Triethyl aluminium and carbon halide |
| Answer» B. Triethyl aluminium and silver halide | |
| 9. |
Which type of polymer will be formed if the substituent group is –C6H5? |
| A. | Polythene |
| B. | Polypropylene |
| C. | Polystyrene |
| D. | Polyvinyl chloride |
| Answer» D. Polyvinyl chloride | |
| 10. |
Tetrachloride are |
| A. | simple covalent molecules |
| B. | volatile |
| C. | all of them |
| D. | tetrahedral |
| Answer» D. tetrahedral | |
| 11. |
Oxidation of chloride ions to chlorine is done by |
| A. | acidified MnO4- |
| B. | nitric acid |
| C. | none |
| D. | both a and b |
| Answer» B. nitric acid | |
| 12. |
In additional polymerization a monomer with double bond will simply |
| A. | remain same |
| B. | turn into single bond |
| C. | get rotated |
| D. | break |
| Answer» C. get rotated | |
| 13. |
If sodium is burned in limited supply of oxygen, the product is a |
| A. | pink solid |
| B. | white solid |
| C. | None of Above |
| D. | buff color solid |
| Answer» C. None of Above | |
| 14. |
The effect of high voltage needed to discharge OH- ion is called |
| A. | hydroxyl effect |
| B. | over voltage effect |
| C. | all of them |
| D. | high effect |
| Answer» C. all of them | |
| 15. |
The electrons of the quantum shells which are further away from nucleus retain attraction which is |
| A. | less |
| B. | more |
| C. | none |
| D. | neutral |
| Answer» B. more | |
| 16. |
Polymers whose monomers are bonded to each other via amide link are called |
| A. | peptides |
| B. | amides |
| C. | polyesters |
| D. | polyamides |
| Answer» E. | |
| 17. |
In order to form an oxygen molecule, the number of electrons needed to complete the outer most shell are |
| A. | 2 |
| B. | 1 |
| C. | 4 |
| D. | 3 |
| Answer» B. 1 | |
| 18. |
The larger the molecules the stronger is the |
| A. | covalent bond |
| B. | van der vaal's forces |
| C. | all of them |
| D. | ionic bond |
| Answer» C. all of them | |
| 19. |
The mole concept helps us in the calculation of |
| A. | volume of gases |
| B. | reacting masses |
| C. | All of Above |
| D. | volumes and concentrations of solutions |
| Answer» D. volumes and concentrations of solutions | |
| 20. |
WHICH_OF_THE_FOLLOWING_MONOMER_CANNOT_BE_POLYMERISED_BY_RADICAL_POLYMERISATION??$ |
| A. | Butadiene |
| B. | Isobutylene |
| C. | Vinyl chloride |
| D. | Acrylates |
| Answer» C. Vinyl chloride | |
| 21. |
RADICAL_POLYMERISATION_IS_NOT_SENSITIVE_TO_CHANGES_IN_THE_POLARITY.?$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 22. |
In esterification, the nucleophile is _________ and the leaving group is ____________ |
| A. | Alcohol, ester |
| B. | Ester, alcohol |
| C. | Water, alcohol |
| D. | Alcohol, water |
| Answer» E. | |
| 23. |
The polymerisation in which propagating centers do not undergo either transfer or termination reactions is called$ |
| A. | Addition polymerisation |
| B. | Co-polymerisation |
| C. | Living polymerisation |
| D. | Dead polymerisation |
| Answer» D. Dead polymerisation | |
| 24. |
Terephthalic acid and ethylene glycol undergo polyesterification to form PET. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 25. |
Which of the following is used for making cold drink bottles, magnetic recording tapes and housings for coffee machines? |
| A. | Ethylene glycol |
| B. | Polyethylene terephthalate |
| C. | Hexamethylene diamine |
| D. | Styrene butadiene |
| Answer» C. Hexamethylene diamine | |
| 26. |
The reverse of esterification is |
| A. | Hydrolysis |
| B. | Condensation |
| C. | Polymerisation |
| D. | Centrifugation |
| Answer» B. Condensation | |
| 27. |
The temperature at which the ionic polymerisation is carried out i? |
| A. | 100<sup>0</sup>C |
| B. | 50<sup>0</sup>C |
| C. | -100<sup>0</sup>C |
| D. | 0<sup>0</sup>C |
| Answer» E. | |
| 28. |
Which of the following act as a catalyst in anionic polymerisation? |
| A. | Grignard reagent |
| B. | Lewis acids |
| C. | Benzoyl peroxide |
| D. | AIBN |
| Answer» B. Lewis acids | |
| 29. |
Which of the following act as an initiator in free-radical polymerisation? |
| A. | Grignard reagent |
| B. | Lewis acids |
| C. | Benzoyl peroxide |
| D. | Potassium amide |
| Answer» D. Potassium amide | |
| 30. |
The co-polymers having branched structures in which the monomer segments on the backbone and branches differ are called |
| A. | Alternate |
| B. | Graft |
| C. | Random |
| D. | Block |
| Answer» C. Random | |
| 31. |
The Ziegler Natta catalyst is formed between |
| A. | Triethyl aluminium and titanium halide |
| B. | Triethyl aluminium and silver halide |
| C. | Triethyl aluminium and platinum halide |
| D. | Triethyl aluminium and carbon halide |
| Answer» B. Triethyl aluminium and silver halide | |
| 32. |
Which type of polymer will be formed if the substituent group is –C6H5 |
| A. | Polythene |
| B. | Polypropylene |
| C. | Polystyrene |
| D. | Polyvinyl chloride |
| Answer» D. Polyvinyl chloride | |