Which of the following polymers of glucose is stored by animals?
1. Cellulose
2. Amylose
3. Amylopectin
4. Glycogen
Which of the following is not a semisynthetic polymer?
1. Cis-polyisoprene
2. Cellulose nitrate
3. Cellulose acetate
4. Vulcanised rubber
In which of the following polymers ethylene glycol is one of the monomer units?
1. | |
2. | |
3. | |
4. |
Match the polymer of Column I with the correct monomer of Column II
Column I | Column II |
A. High-density polymer | 1. Isoprene |
B. Neoprene | 2. Tetrafluoroethene |
C. Natural rubber | 3. Chloroprene |
D. Teflon | 4. Ethene |
Codes
A | B | C | D | |
1. | 2 | 3 | 4 | 1 |
2. | 3 | 1 | 4 | 2 |
3. | 4 | 3 | 1 | 2 |
4. | 4 | 3 | 2 | 1 |
Match the polymers given in Column I with their commercial names given in Column II.
Column I | Column II |
A. Polyester of glycol and phthalic acid | 1. Novolac |
B. Copolymer of 1, 3-butadiene and styrene | 2. Glyptal |
C. Phenol and formaldehyde resin | 3. Buna-S |
D. Copolymer of 3-butadiene and acrylonitrile | 4. Buna-N |
Codes
A | B | C | D | |
1. | 2 | 3 | 1 | 4 |
2. | 3 | 1 | 4 | 2 |
3. | 2 | 4 | 3 | 1 |
4. | 4 | 3 | 2 | 1 |
Match the polymers given in Column I with their repeating units given in Column II.
Column I |
Column II |
A. Acrilan B. polystyrene C. Novolac D. Buna-N |
1. 3. |
Codes
A B C D
1. 2 3 4 1
2. 3 1 4 2
3. 1 4 3 2
4. 4 3 2 1
Given below are two statements:
Assertion (A): | Rayon is a semisynthetic polymer and is taken as a better choice than cotton fabric. |
Reason (R): | Mechanical and aesthetic properties of cellulosic can be improved by Acetylation. |
1. | Assertion and Reason both are correct statements But reason does not explain Assertion. |
2. | Assertion and Reason both are correct statements and Reason explains the Assertion. |
3. | Assertion is the correct statement and Reason is the wrong statement. |
4. | Assertion is the wrong statement and reason is the correct statement. |
Select the correct option based on statements below:
Assertion (A): | Most of synthetic polymers are not biodegradable. |
Reason (R): | The polymerization process induces toxic character in organic molecules. |
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): | Polyamides are best used as fibers because of their high tensile strength. |
Reason (R): | Strong intermolecular forces (like hydrogen bonding within polyamides) lead to close packing of chains and increase the crystalline character. |
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. | (A) is true but (R) is false. |
4. | (A) is false but (R) is true. |
Select the correct option based on statements below:
Assertion (A): | For making rubber synthetically, isoprene molecules are polymerized. |
Reason (R): | Neoprene (a polymer of chloroprene) is a synthetic rubber. |
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. | (A) is false but (R) is true. |
4. | (A) is true but (R) is false. |