The compound which on reaction with aqueous HNO2 at low temperature produces an oily nitrosoamine is
methyl amine
ethyl amine
diethyl amine
aniline
Amongst the following the most basic compund is
benzyl amine
aniline
acetanilide
p -nitroaniline
Polymerisation in which two or more chemically different monomers take part, is called
addition polymerisation
co-polymerisation
chain polymerisation
homo polymerisation
Which carbohydrate is an essential constituent of plant cells?
Starch
Cellulose
Sucrose
Vitamins
Which of the following is not present in nucleic acids?
Uracil
2-aminopyridine
Thymine
Adenine
B.
2-aminopyridine
In nucleic acid (DNA and RNA) adenine guanine, cytosine, thymine and uracil a represent as nitrogenous base.