Which pair show cis-trans isomerism [RPET 1999]

1.	Which pair show cis-trans isomerism [RPET 1999]
A.	Maleic-fumaric acid
B.	Lactic-tartaric acid
C.	Malonic-succinic acid
D.	Crotonic-acrylic acid
Answer» B. Lactic-tartaric acid

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Which pair show cis-trans isomerism [RPET 1999]

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