1) These problems are taken from Cambridge chemistry Challenge.
2) You can use whatever means you like to solve the problems.
3) This is my little effort to make chemistry popular in Brilliant.
4) So like and re-share those who like problem solving and chemistry.
5) If you will search the terms you don't know on Google etc,definitely your chemistry knowledge will increase.
6) Please comment your valuable suggestion.
7) Together we make chemistry popular on Brilliant.