What are Sodium benzoate and Sodium metabisulphite primarily used as?

Gunpowder consists of a mixture of:

Which type of hydrogen is produced from fossil fuels without capturing the resultant carbon emissions?

Which element is denoted by the atomic number 28?

Which polymer is primarily used in making pipes and cable coatings?

Match the following Functional group with their respective Chemical name.

Which of the following elements has the highest electronegativity.

Protons were discovered by

Which vitamin exists  in the Cobalt   ?

What is the chemical formula of Urea, the best nitrogenous fertilizer?