Category: O-level chemistry videos


06/05/2021 2

Genotype This is the genetical constitution of an organism i.e. the particular set alleles, leading to observable characteristics Please Subscribe to promote this website. Subscription ... Read More

Preparation of hydrogen

07/11/2020 3

procedure of preparation of hydrogen and worked examples Read More

Preparation of oxygen with worked examples

07/08/2020 2

principles of preparation of gases i.e. preparatory state, purification stage, drying stage, and collection stage. Preparation oxygen, sample questions and answers Read More

Preparation of gases

06/24/2020 2

Stages of gas preparation, preparation of oxygen, testing for oxygen Read More