2019
AIIMS
MCQ
AIIMS 2019
Match the following columns.
| Polymer | Monomer | ||
|---|---|---|---|
| (i) | Buna-S | (P) | Styrene |
| (ii) | Ethylene glycol | (Q) | Terylene |
| (iii) | Elastomer | (R) | Chloroprene |
Correct set of answer :
A.
(i)-(P) (ii)-(Q) (iii)-(R)
B.
(i)-(R) (ii)-(P) (iii)-(Q)
C.
(i)-(Q) (ii)-(R) (iii)-(P)
D.
(i)-(P) (ii)-(R) (iii)-(Q)
2019
AIIMS
MCQ
AIIMS 2019
Assertion : Nylon-6 is condensation polymer.
Reason : It is polymer of caprolactum.
A.
If both assertion and reason are true and reason is the correct explanation of assertion.
B.
If both assertion and reason are true, but reason is not the correct explanation of assertion.
C.
If assertion is true, but reason is false.
D.
If both assertion and reason are false.
2018
AIIMS
MCQ
AIIMS 2018
In the above reaction sequence, $X$ is
A.
cyclohexanone
B.
caprolactam
C.
hexamethylene di-isocyanate
D.
$\mathrm{HO}\left(\mathrm{CH}_2\right)_6 \mathrm{NH}_2$
2018
AIIMS
MCQ
AIIMS 2018
Assertion (A) The molecular mass of the polymers cannot be calculated using the boiling point or freezing point method.
Reason (R) The freezing point method is used for determining the molecular mass of small molecules.
A.
Both (A) and (R) are true and (R) is the correct explanation of (A).
B.
Both (A) and (R) are true, but (R) is not the correct explanation of (A).
C.
(A) is true and (R) is false.
D.
Both (A) and (R) are false.
2018
AIIMS
MCQ
AIIMS 2018
Assertion (A) Most of the synthetic polymers are not biodegradable.
Reason (R) Polymerisation process induces toxic polymerisation.
A.
Both (A) and (R) are true and (R) is the correct explanation of (A).
B.
Both (A) and (R) are true, but (R) is not the correct explanation of (A).
C.
(A) is true and (R) is false.
D.
Both (A) and (R) are false.