100+ Physics Multiple Choice Questions Answers for Competitive Exams - 1
Question: 1
Write the symbols of the following elements Chlorine, Iron, Silver, Gold?
Chlorine – Cl
Iron – Fe
Silver – Ag
Gold – Au
Question: 2
What is matter?
Anything that occupies space and has mass is called matter.
Question: 3
Define element?
Any pure substance which cannot be broken into two or more pure substances by any physical or chemical means is called element.
Example : Aluminium, Gold.
Question: 4
Define molecule?
The smallest unit of a pure substance which always exists independently and can retain physical and chemical properties of that substance is called a molecule.
Question: 5
Define compound?
A compound is a pure substance formed by the combination of two or more elements in a fixed ratio by mass.
The basic units of a compound are molecules.
Example : Carbon dioxide, Water.
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