1.
In nucleus, mass of an atom is more than

2.
A theory of movement of electrons in a fixed orbit around nucleus was given by

3.
Two or more atoms chemically combined together form a

4.
An electrically charged particle which is formed when an atom gains or loses electron is called

5.
The number and types of atoms a molecule contain, are shown by its

6.
If an atom loses electron the ion obtained is charged

7.
Molecules which consists of fixed number of different types of atoms which are chemically combined together, are

8.
The representation of an object, system or phenomenon is done by

Read More Section(Science Mcqs)

Each Section contains maximum 70 questions. To get more questions visit other sections.