The bond energy of $C=C$ and $C-C$ at $298 \ K$ are $590 \ kJ \ mol^{-1}$ and $331 \ kJ \ mol^{-1}$ respectively. The enthalpy of polymerisation per mole of ethylene is $..... \ kJ$.
- A$-70$
- B$-72$
- C$+72$
- D$-68$
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Similar Questions
Match the following:
Polymer
Type
$A$. Bakelite
$P$. Homo polymer
$B$. Nylon-$6$
$Q$. Condensation polymer
$C$. Terylene
$R$. Polyester
$D$. $PHBV$
$S$. Copolymer
| Polymer | Type |
|---|---|
| $A$. Bakelite | $P$. Homo polymer |
| $B$. Nylon-$6$ | $Q$. Condensation polymer |
| $C$. Terylene | $R$. Polyester |
| $D$. $PHBV$ | $S$. Copolymer |
Medium
View SolutionMatch List-$I$ with List-$II$.
List-$I$ List-$II$ $A$. Weak intermolecular forces of attraction $I$. Hexamethylenediamine $+$ adipic acid $B$. Hydrogen bonding $II$. $AlEt_3 + TiCl_4$ $C$. Heavily branched polymer $III$. $2-$chloro$-1,3-$butadiene $D$. High density polymer $IV$. Phenol $+$ formaldehyde
Choose the correct answer from the options given below:
| List-$I$ | List-$II$ |
|---|---|
| $A$. Weak intermolecular forces of attraction | $I$. Hexamethylenediamine $+$ adipic acid |
| $B$. Hydrogen bonding | $II$. $AlEt_3 + TiCl_4$ |
| $C$. Heavily branched polymer | $III$. $2-$chloro$-1,3-$butadiene |
| $D$. High density polymer | $IV$. Phenol $+$ formaldehyde |
Choose the correct answer from the options given below:
Match materials given in Column-$I$ with the polymers given in Column-$II$.
Column-$I$ Column-$II$ $A$. Natural rubber latex $i$. Nylon $B$. Wood laminates $ii$. Neoprene $C$. Ropes and fibres $iii$. Dacron $D$. Polyester fabric $iv$. Melamine formaldehyde resins $E$. Synthetic rubber $v$. Urea-formaldehyde resins $F$. Unbreakable crockery $vi$. cis-polyisoprene
| Column-$I$ | Column-$II$ |
| $A$. Natural rubber latex | $i$. Nylon |
| $B$. Wood laminates | $ii$. Neoprene |
| $C$. Ropes and fibres | $iii$. Dacron |
| $D$. Polyester fabric | $iv$. Melamine formaldehyde resins |
| $E$. Synthetic rubber | $v$. Urea-formaldehyde resins |
| $F$. Unbreakable crockery | $vi$. cis-polyisoprene |
Medium
View SolutionMatch the following:
$A$. Teflon $I$. $SnCl_2$ $B$. Anionic polymerisation $II$. $C_2F_4$ $C$. Cationic polymerisation $III$. Bakelite $D$. Thermosetting polymer $IV$. Polystyrene $V$. $RLi$
The correct answer is:
| $A$. Teflon | $I$. $SnCl_2$ |
| $B$. Anionic polymerisation | $II$. $C_2F_4$ |
| $C$. Cationic polymerisation | $III$. Bakelite |
| $D$. Thermosetting polymer | $IV$. Polystyrene |
| $V$. $RLi$ |
The correct answer is:
Match List-$I$ with List-$II$.
List-$I$ (Chemicals) List-$II$ (Use / Preparation / Constituent) $(a)$ Alcoholic potassium hydroxide $(i)$ Electrodes in batteries $(b)$ $Pd / BaSO_4$ $(ii)$ Obtained by addition reaction $(c)$ $BHC$ (Benzene hexachloride) $(iii)$ Used for $\beta$-elimination reaction $(d)$ Polyacetylene $(iv)$ Lindlar's catalyst
Choose the most appropriate match.
| List-$I$ (Chemicals) | List-$II$ (Use / Preparation / Constituent) |
|---|---|
| $(a)$ Alcoholic potassium hydroxide | $(i)$ Electrodes in batteries |
| $(b)$ $Pd / BaSO_4$ | $(ii)$ Obtained by addition reaction |
| $(c)$ $BHC$ (Benzene hexachloride) | $(iii)$ Used for $\beta$-elimination reaction |
| $(d)$ Polyacetylene | $(iv)$ Lindlar's catalyst |
Choose the most appropriate match.
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