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 |
In the reaction–
Reagent X is–
1. Triethylaluminium and titanium tetrachloride.
2. Triethyl aluminum.
3. Zeigler Natta Catalyst.
4. Both 1 & 3
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) |
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.
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 |
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. |
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. |