When condensation product of hexamethylenediamine and adipic acid is heated to 353 K (80° C) in an atmosphere of nitrogen for about 4-5 h, the product obtained is:
solid polymer of nylon 66
liquid polymer of nylon 66
gaseous polymer of nylon 66
Liquid polymer of nylon 6
Which of the following is used to detect aldehydes?
Millon's test
Tollen's reagent
Neutral ferric chloride solution
Molisch's test
Primary amine (RNH2) reacts with nitrous acid to give
ROH
ROR
None of these
B.
ROH
1 ° aliphatic amines on reaction with HNO2 form alcohol and evolve N2.
Which of the acids cannot be prepared by Grignard reagent?
Acetic acid
Succinic acid
Formic acid
All of these