Methane contributes towards global warming so it is called a _________________ gas.

 

In the thermite process, the reducing agent is Aluminium.

Silicon carbide is used in Cutting very hard substances.

The compound methane is a simple hydrocarbon contains one carbon bonded to four hydrogens. Ethane is a simple hydrocarbon which contains two carbon atoms and four hydrogen atoms. Similarly, propane with three carbons.

The main use of salt in the diet is to produce in small amounts the hydrochloric acid required for the digestion of food.

Electronegativity measures an element's ability to form chemical bonds. Helium is the most electronegative element followed by Fluorine.

Here in the given options, Oxygen is the most electronegative element. Fluorine is followed by Oxygen, Chlorine and Nitrogen is the most electronegative elements list.

bullet proof material is made up of polymer Poly carbonates.

The chemical name of common salt is Sodium Chloride with a chemical formula NaCl.

When two or more chemical species combine to form a single product, the reaction is said to be synthesis reaction. It is also called as Direct Combination reaction.

Here in the given options, Sodium (Na) combines with Chlorine (Cl) to form a more complex single product Sodium Chloride (NaCl).