Self condensation of acetaldehyde, in the presence of dilute alkalies gives
an acetal
an aldol
mesitylene
propionaldehyde
Stephen's reduction is used to prepare aldehyde from
alcohol
alkyl cyanides
alkanones
acid chlorides
Given below are some statements concerning formic acid, which of them is true ?
It is weaker acid than acetic acid
It is reducing agent
When its calcium salt is heated, it forms a ketone
It is an oxidising agent
Brown ring is made for
NO-3
Cl-
I-
Br-
A.
NO-3
Ring test for nitrate ions is
At the junction of H2O4 and (FeSO4 + nitrate solution)