MCQOPTIONS
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MCQOPTIONS
This section includes 12 Mcqs, each offering curated multiple-choice questions to sharpen your Polymer Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Cellulose acetate-butyrate is more suitable than cellulose acetate for producing movie films. State true or false. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 2. |
What should be the content of N2 in commercial cellulose nitrate used for plastic and coating purposes? |
| A. | 10.9-12.2% |
| B. | 13.5-14% |
| C. | 8.9-9.2% |
| D. | 16-18% |
| Answer» B. 13.5-14% | |
| 3. |
What is the role of H2SO4 in the preparation of cellulose nitrate? |
| A. | catalyst |
| B. | condensing agent |
| C. | plasticizer |
| D. | swelling agent |
| Answer» C. plasticizer | |
| 4. |
CELLULOSE_ACETATE-BUTYRATE_IS_MORE_SUITABLE_THAN_CELLULOSE_ACETATE_FOR_PRODUCING_MOVIE_FILMS._STATE_TRUE_OR_FALSE.?$ |
| A. | true |
| B. | false |
| Answer» B. false | |
| 5. |
What is the film called, that is formed by the viscose solution of sodium cellulose xanthate? |
| A. | celluloid |
| B. | cellophane |
| C. | cellulite |
| D. | viscose rayon |
| Answer» C. cellulite | |
| 6. |
Which solvent is used for reaction with soda cellulose in the production of regenerated cellulose? |
| A. | carbon disulphide |
| B. | carbon tetrachloride |
| C. | toluene |
| D. | none of the mentioned |
| Answer» B. carbon tetrachloride | |
| 7. |
Which of the following cellulose ethers is used as viscosity modifiers in aqueous suspensions and emulsions? |
| A. | ethyl cellulose |
| B. | methyl cellulose |
| C. | sodium carboxymethyl cellulose |
| D. | propyl cellulose |
| Answer» D. propyl cellulose | |
| 8. |
Which of the following type of cellulose acetate is soluble in chloroform? |
| A. | primary cellulose acetate |
| B. | secondary cellulose acetate |
| C. | all of the mentioned |
| D. | none of the mentioned |
| Answer» B. secondary cellulose acetate | |
| 9. |
Which of the following acts as a swelling agent for the cellulose in preparation of cellulose acetate? |
| A. | acetic anhydride |
| B. | acetic acid |
| C. | sulphuric acid |
| D. | alkyl chloride |
| Answer» C. sulphuric acid | |
| 10. |
What should be the content of N2 in commercial cellulose nitrate used for plastic and coating purposes? |
| A. | 10.9-12.2% |
| B. | 13.5-14% |
| C. | 8.9-9.2% |
| D. | 16-18% |
| Answer» B. 13.5-14% | |
| 11. |
What is the role of H2SO4 in the preparation of cellulose nitrate? |
| A. | catalyst |
| B. | condensing agent |
| C. | plasticizer |
| D. | swelling agent |
| Answer» C. plasticizer | |
| 12. |
Which of the following area of application restricts the use of cellulose nitrate? |
| A. | photographic films |
| B. | lacquor coatings |
| C. | tool handles |
| D. | printing inks |
| Answer» B. lacquor coatings | |