The repeating unit of organosilicon polymers (silicones) is:
- A$(- R_2Si -)_n$
- B$(- R_2SiO_2 -)_n$
- C$(- R_2SiO -)_n$
- DAll of these
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Which of the following polymers contains the $-CO-NH-$ linkage?
Which of the following polymers is believed to leach a human carcinogen into food when used as household plastic?
Match the polymers given in Column-$I$ with their repeating units given in Column-$II$.
Column-$I$ Column-$II$ $A$. Acrilan $i$. $-[CH_2-CH(CN)]_n-$ $B$. Polystyrene $ii$. $-[CH_2-CH(C_6H_5)]_n-$ $C$. Neoprene $iii$. $-[CH_2-C(Cl)=CH-CH_2]_n-$ $D$. Novolac $iv$. $-[CH_2-CH=CH-CH_2-CH_2-CH(CN)]_n-$ $E$. Buna-$N$ $v$. Linear phenol-formaldehyde polymer
| Column-$I$ | Column-$II$ |
|---|---|
| $A$. Acrilan | $i$. $-[CH_2-CH(CN)]_n-$ |
| $B$. Polystyrene | $ii$. $-[CH_2-CH(C_6H_5)]_n-$ |
| $C$. Neoprene | $iii$. $-[CH_2-C(Cl)=CH-CH_2]_n-$ |
| $D$. Novolac | $iv$. $-[CH_2-CH=CH-CH_2-CH_2-CH(CN)]_n-$ |
| $E$. Buna-$N$ | $v$. Linear phenol-formaldehyde polymer |
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View SolutionWhich of the following is a biodegradable polymer of the polyamide class?
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