Which of the following can be obtained by fractional distillation?

The best treatment for a student who accidentally poured conc tetraoxosulphate(vi) on his skin in the laboratory is to wash his skin with?

8g of \( \mathrm{CH_4} \) occupies 11.2 at S.T.P. What volume would 22g of \( \mathrm{CH_3CH_2CH_3} \) occupy under the same condition?

An example of a polysaccharide is?

Liquid black soap is made by boiling palm oil with liquid extract of ash. The function of the ash is to provide the ?

What are the possible oxidation numbers of an element if its atomic number is 17?

Duralumin consists of aluminum, copper?

The electronic configuration of an element is \(1S^2\) \(2S^2\) \(2P^6\) \(3S^2\) \(3P^3\). How many unpaired electrons are there in the element?

What process would coal undergo to give coal gas, coal tar, ammoniacal liquor and coke?