MCQOPTIONS
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MCQOPTIONS
This section includes 7 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. |
Polymers of type A produce yellow smoky flame on heating with an unpleasant and sweet smell. They also melt or char giving acidic distillate and black residue.Which of the following could be A? |
| A. | tpolyisoprenes |
| B. | tpolyesters |
| C. | tnylons |
| D. | tethyl cellulose |
| Answer» C. tnylons | |
| 2. |
Which of the following polymer produces an odour resembling burning paraffin wax on heating? |
| A. | tpolyethylene |
| B. | tpolyesters |
| C. | tcellulose |
| D. | tbutyl rubber |
| Answer» B. tpolyesters | |
| 3. |
Which of the following polymers do not produce black residue on heating? |
| A. | tchlorinated rubber |
| B. | tpoly (vinyl alcohol) |
| C. | tpoly (vinyl chloride) |
| D. | tnone of the mentioned |
| Answer» E. | |
| 4. |
Which of the following polymers does not produce a smoky flame? |
| A. | tpolybutadiene rubber |
| B. | tgutta percha |
| C. | tpoly (vinyl acetate) |
| D. | tpolysulphide rubber |
| Answer» E. | |
| 5. |
Which of the following polymer produces camphor like odour on heating? |
| A. | tethyl cellulose |
| B. | tcellulose nitrate |
| C. | tpolyacrylonitrile |
| D. | tcellulose acetate |
| Answer» C. tpolyacrylonitrile | |
| 6. |
What colour is developed when polyvinylidene chloride is immersed in morpholine? |
| A. | tdark blue |
| B. | tlight yellow |
| C. | tbrown |
| D. | tpurple |
| Answer» D. tpurple | |
| 7. |
What colour change is observed when few drops of alcoholic NaOH is added to polyvinyl chloride solution? |
| A. | tcolourless to red |
| B. | tcolourless to yellow |
| C. | tcolourless to blue |
| D. | tcolourless to grey |
| Answer» C. tcolourless to blue | |