- 1(current)
Q. No.In the reaction–
Reagent X is–
1. Triethylaluminium and titanium tetrachloride.
2. Triethyl aluminum.
3. Zeigler Natta Catalyst.
4. Both 1 & 3
Subtopic: Application of Polymers |
85%
Level 1: 80%+
Hints
Select the correct option based on statements below:
| Assertion (A): | Polytetrafluoroethylene is used in making non-stick cookware. |
| Reason (R): | Fluorine has the highest electronegativity. |
| 1. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 2. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 3. | Both (A) and (R) are false. |
| 4. | (A) is true but (R) is false. |
Subtopic: Application of Polymers |
67%
Level 2: 60%+
Hints
Match the polymers given in Column-I with their repeating units given in Column-II. Choose the correct option from the codes given below :
| Column-I | Column-II |
| (a) Polystyrene | (p)  |
| (b) Novolac | (q)  |
| (c) Buna-N | (r)  |
| (d) Acrilan | (s)  |
| (a) | (b) | (c) | (d) | |
| 1. | (s) | (r) | (q) | (p) |
| 2. | (r) | (p) | (s) | (q) |
| 3. | (p) | (q) | (r) | (s) |
| 4. | (q) | (s) | (p) | (r) |
Subtopic: Classification - Methods of Polymerization & Copolymerization | Application of Polymers |
81%
Level 1: 80%+
Hints
Plastic household crockery is prepared by using :
1. Melamine and tetrafluoroethane.
2. Malonic acid and hexamethylene imine.
3. Melamine and vinyl acetate.
4. Melamine and formaldehyde.
Subtopic: Application of Polymers |
77%
Level 2: 60%+
Hints
Select the correct option based on statements below:
| Assertion (A): | Nylon-2,Nylon-6 is a biodegradable polymer. |
| Reason (R): | Glycine is one of the monomers of Nylon-2,6. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Application of Polymers |
59%
Level 3: 35%-60%
Hints
Match the following:
| Column I | Column II |
| A. Bakelite | 1. Squeeze bottles |
| B. Low-density polyethylene | 2. Unbreakable crockery |
| C. Melamine-formaldehyde resin | 3. Tyre, cords |
| D. Nylon- 6 | 4. Electrical switches |
Codes
| A | B | C | D | |
| 1. | 2 | 3 | 4 | 1 |
| 2. | 4 | 1 | 2 | 3 |
| 3. | 1 | 4 | 3 | 2 |
| 4. | 4 | 3 | 2 | 1 |
Subtopic: Application of Polymers |
75%
Level 2: 60%+
Hints
Match the materials given in Column I with the polymers given in Column II.
| Column I | Column II |
| A. Natural rubber latex | 1. Nylon |
| B. Wood laminates | 2. Dacron |
| C. Ropes and fibers | 3. Urea-formaldehyde resins |
| D. Polyester fabric | 4. cis-polyisoprene |
Codes
| A | B | C | D | |
| 1. | 2 | 3 | 4 | 1 |
| 2. | 3 | 4 | 1 | 2 |
| 3. | 1 | 4 | 3 | 2 |
| 4. | 4 | 3 | 1 | 2 |
Subtopic: Application of Polymers |
88%
Level 1: 80%+
Hints
- 1(current)
Q. No.
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