Question # 1

When we mvoe top to bottom in group, ionization energy.

Choose an answer

Increases

No effet

Decreases

None of these

Atomic number is represented by

Choose an answer

P

A

At

Z

How many electron are there in the valence shell of sodium atom.

Choose an answer

One

Two

Three

Four

How many electons can be accommodated in S subshell?

Choose an answer

2

6

14

10

The compund formed by oppoite charges are known as.

Choose an answer

Metallic solids

Ionic compounds

Non-polar Covalent compound

None of the above

While baking which gas is responsible for raising the bread and making it soft?

Choose an answer

Oxygen

Carbon monoxide

Carbon di oxide

Nitrogen

In an irrversibel reaction equilibrium

Choose an answer

Never establised

Established quickly

Established slowly

Established when reaction stops

A covalent bond formed by the mutual sharing of two pairs of electrons between bonded atoms is called.

Choose an answer

Signle covalent bond

Double covalent bond

Triple covalent bond

Polar covalent bond

Empricial formula of sand is.

Choose an answer

SiO2

SiO3

SiO4

SiO

A bond pair is covalent molecules usually has.

Choose an answer

One electron

Two electron

Three electron

Four electron

What is the mass of AI in 204 g of aluminium oxide Al₂O₃

Choose an answer

26 g

54 g

108 g

27 g

Second and third periods are called

Choose an answer

1st transition series

Normal periods

2nd transiion series

3rd transiliton serios

The colour of anhydrous copper (II)sulphate solid is

Choose an answer

Pink

Black

White

Blue

More Classes

Other Links

Chemistry 9th Class English Medium Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer