Common alum is
Which one of the following proteins transports oxygen in the blood stream?
Ethyl alcohol reacts with thionyl chloride to give
CH3CH2Cl + HCl
CH3CH2Cl + H2O + SO2
CH3CH2Cl +HCl + SO2
CH3CH2Cl +SO2 + Cl2
Gabriel phthalimide reaction is used for the preparation of
primary aromatic amines
primary aliphatic amines
The monomers of terylene are
phenol and formaldehyde
ethylene glycol and phthalic acid
adipic acid and hexamethylenediamine
ethylene glycol and terephthalic acid
Heating of rubber with sulphur is called
Vulcanisation is a chemical process which is used to harden rubber. During this process, sulphur forms cross links at the reactive sites of double bonds and thus results in hardening of rubber.
Which of the following statement is correct ?
+I group stabilises a carbocation
+I group stabilises a carbanion
-I group stabilises a carbocation
-I group stabilises a free radical