Which one of the following reagents can distinguish between an aldehyde and a ketone?
Fehling's solution
H2SO4 solution
NaHSO4
NH3
Dry distillation of the mixture of calcium formate and calcium acetate gives
acetone
acetaldehyde
formaldehyde
formic acid
The general formula (RCO)2O represents
a ketone
an ether
an acid anhydride
an ester
C.
an acid anhydride
Elimination of one mole H2O from two moles of carboxylic acid gives an acid anhydride.
R-COOH + HO-CO-R R-CO-O-CO-R
Trioxane has the formula , it is prepared from
formaldehyde
methanol
dichloromethane
vinyl alcohol
When methyl cyanide is hydrolysed in presence of alkali, the product is
acetamide
methane
CO2 + H2O
acetic acid
Which of the following reacts with phenol to give salicylaldehyde after hydrolysis?
Dichloro methane
Trichloro methane
Methyl chloride
None of these