Questions

According to a Report by analyst firm Canalys, India has become the second largest smartphone market in the world.

I am black gold i.e charcoal. It is black when it is not used and when using it is red due to fire and when used it is in grey color as it becomes ash. 

Each model of a computer has a unique machine language.

Bookkeeper is the only English word that has three consecutive double letters.

Proteins are long chains of Amino acids. That is in brief, Amino acids are the monomers of Proteins. Amino acids are compounds which contain both an amino group and a carboxylic group. Proteins are made up of 20 essential amino acids.

Monomer means a small molecule of an organic substance i.e, building block in general.