Ethyl alcohol containing 9.5 % methyl alcohol land 0.5 % pyridine is called :
One of the following substances is not added to make denatured alcohol. This is :
(a) methyl alcohol (b) copper sulphate (c) chloroform (d) pyridine
How are the following obtained : (a) absolute alcohol,
(b) spurious alcohol, (c) methylated spirit?