MCQOPTIONS
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MCQOPTIONS
This section includes 3 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. |
The aqeous extracts of some polymers when tested with chomotropic solution followed by addition of sulphuric acid and then heating to nearly 100 C gave dark violet colour. Which of the following cannot respond to this test? |
| A. | tpolyvinyl formal |
| B. | tpolyoxymethylenes |
| C. | turea-formaldehyde resisns |
| D. | tpolyacrylonitrile |
| Answer» E. | |
| 2. |
What colour is obtained when a drop of diphenylamine solution in concentrated sulphuric acid is added to the sample of cellulose nitrate in the absence of other oxidizing agents? |
| A. | tdeep blue |
| B. | tyellow |
| C. | tgrey |
| D. | tred |
| Answer» B. tyellow | |
| 3. |
Which of the following do not respond to the Molisch test for carbohydrates? |
| A. | tcellulose acetate |
| B. | tviscose rayon |
| C. | tcellulose nitrate |
| D. | tnone of the mentioned |
| Answer» D. tnone of the mentioned | |