Question

4-carbohydrates glucose, lactose, sucrose, starch are present. Different test is carried out with 4-carbodydrates separately. Following observation takes place. a) Heated : it is charred b) I2 solution : no violet colour c) Fehling solution : reddish brown ppt, is observed. d) It does not reduce copper (II) acetate to 2 Cu O . No red precipitated is observed in 5 min. The carboxylate which satisfy all the above observation 1) Glucose 2) Lactose 3) Sucrose 4) Starch

Answer 1

Answer:

lactose

HACK:

it is charred -- Its hydrocarbon

no violet colour ----- not starch

Fehling solution : reddish brown ppt, is observed ----- not Glucose and Sucrose

Then only lactose remains