Match the following polymers in List-$I$ with their monomers in List-$II$:
List-$I$ List-$II$ $(A)$ $-(NH-(CH_2)_6-NH-CO-(CH_2)_4-CO)_n-$ $(I)$ Ethylene glycol and terephthalic acid $(B)$ $-(CO-(CH_2)_5-NH)_n-$ $(II)$ Phenol and formaldehyde $(C)$ $-(CF_2-CF_2)_n-$ $(III)$ Caprolactam $(D)$ $-(O-CH_2-CH_2-OOC-C_6H_4-CO)_n-$ $(IV)$ Hexamethylene diamine and adipic acid $(V)$ Tetrafluoroethene
| List-$I$ | List-$II$ |
|---|---|
| $(A)$ $-(NH-(CH_2)_6-NH-CO-(CH_2)_4-CO)_n-$ | $(I)$ Ethylene glycol and terephthalic acid |
| $(B)$ $-(CO-(CH_2)_5-NH)_n-$ | $(II)$ Phenol and formaldehyde |
| $(C)$ $-(CF_2-CF_2)_n-$ | $(III)$ Caprolactam |
| $(D)$ $-(O-CH_2-CH_2-OOC-C_6H_4-CO)_n-$ | $(IV)$ Hexamethylene diamine and adipic acid |
| $(V)$ Tetrafluoroethene |
- A$IV, III, V, I$
- B$III, II, IV, I$
- C$IV, III, II, I$
- D$II, IV, III, V$
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Write the full form of $PHBV$. Also,write down its preparation and uses.
Difficult
View SolutionWhich of the following polymers is used to obtain oil seals?
The correct match between Item-$I$ and Item-$II$ :
Item-$I$ Item-$II$ $a$. Natural rubber $I$. $1,3-$butadiene $+$ styrene $b$. Neoprene $II$. $1,3-$butadiene $+$ acrylonitrile $c$. Buna$-N$ $III$. Chloroprene $d$. Buna$-S$ $IV$. Isoprene
| Item-$I$ | Item-$II$ |
|---|---|
| $a$. Natural rubber | $I$. $1,3-$butadiene $+$ styrene |
| $b$. Neoprene | $II$. $1,3-$butadiene $+$ acrylonitrile |
| $c$. Buna$-N$ | $III$. Chloroprene |
| $d$. Buna$-S$ | $IV$. Isoprene |
$A$ polymer with high chemical stability has a melting point $(M.P.)$ of $327\ ^\circ C$ and the density of a completely crystalline sample is $2.3\ g/cm^3$. It is:
Difficult
View SolutionGiven below are two statements,one is Assertion $(A)$ and the other is Reason $(R).$
Assertion $(A):$ Natural rubber is a linear polymer of isoprene called cis-polyisoprene with elastic properties.
Reason $(R):$ The cis-polyisoprene molecules consist of various chains held together by strong polar interactions with a coiled structure.
In the light of the above statements,choose the correct one from the options given below:
Assertion $(A):$ Natural rubber is a linear polymer of isoprene called cis-polyisoprene with elastic properties.
Reason $(R):$ The cis-polyisoprene molecules consist of various chains held together by strong polar interactions with a coiled structure.
In the light of the above statements,choose the correct one from the options given below:
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