Chemistry Questions

Generally covalently bonded molecules ______.

I. have high boiling and melting point as compare to ionically bonded molecules

II. poor conductors of electricity

III. have weak intermolecular force

Who first discovered the every eighth element had properties similar to that of the first?

What is the position of metallic ion and non-metallic ion in a chemical formula?

_______contributes towards global warming so it is called a greenhouse gas.

Which of the following statements are CORRECT?

I. Esters are sweet smelling substance.
II Esters are used in making perfumes.
III. Functional group of ester is R-O-RꞋ.

An electron loses potential energy when it

The process of transferring of charge from a charged object to the earth is called ______________.

Valency of an element depends on which of the following?

I. Number of losing electron

II. Number of gaining electron

III. Number of sharing electron