KEAM 2011 Physics and Chemistry Paper

(i) Geometrical isomers of compound
CHCl = CHCHOHCOOH
(ii) It also shows optical isomerism as
(iii) It can also show position isomerism. For example two positional isomers are given below :

Cl |

C

4

H=

C

3

H−

OH |

C

2

H−

C

1

OOH
4 -chloro-2-hydroxy-3-butene-1-oic acid

Cl |

C

H=

OH |

C

−CH2−COOH
4 -chloro-3-hydroxy-3-butene -1 -oic acid
(iv) It can also show functional isomerism as functional isomer of an alcohol is ether.

Cl |

C

H=CH

− OH | C H

alcohol

−COOH

Cl |

C

H=CH

−O−CH2

ether

−COOH