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
B.
Tollen's reagent
(i) Millon's test : used to detect proteins.
(ii) Neutral FeCl3 solution used to detect phenolic -OH group.
(iii) Molisch's test used to detect carbohydrate.
(iv) Tollen's reagent is ammoniacal AgNO3
Aldehydes reduce it to silver mirror.
∴ Tollen's reagent is used to detect aldehydes.
Which of the acids cannot be prepared by Grignard reagent?
Acetic acid
Succinic acid
Formic acid
All of these