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
Which of the acids cannot be prepared by Grignard reagent?
Acetic acid
Succinic acid
Formic acid
All of these
C.
Formic acid
Carboxylic acids are prepared by reaction of Grignard reagent with CO2
∴ Formic acid (HCOOH) has only one carbon atom.
∴ Formic acid cannot be prepared from Grignard reagent.