Question # 1

The value of Avogadro 'no is:

Choose an answer

6.023×1024

6.023×1026

6.023×1023

6.023×1020

________________ orbital is more complex in shape.

Choose an answer

s

p

f

d

D-block consists of:

Choose an answer

4th,5th & 6th periods

2nd, 3rd & 4th periods

1st, 2nd, & 3rd periods

In period, ionization energy of elements

Choose an answer

Increases

Decreases

Remains constant

None of these

Es is symbol of :

Choose an answer

Erbium

Einsteinium

Europium

Fremium

________________ observed that formation of covalent bonds.

Choose an answer

Rutherford

G.N Lewis

Both a and b

Bohar's

Non-metals do not reaction with

Choose an answer

Strong bases

Concentrated acids

Dilute acids

Salts

The atomic number of sodium is ............... .

Choose an answer

9

10

11

12

An ________________ scientist arranged the elements in order in periodic table.

Choose an answer

English

Italian

African

Indian

Which pair of compounds is soluble?

Choose an answer

Ether and water

KCI and water

Benzene and water

Petrol and water

The branch of chemistry which deals with inter conversion of electrical & chemical energy is:

Choose an answer

Biochemistry

Electrochemistry

Organic chemistry

None of these

Every system in the universe tends to lower its energy to attain ________________

Choose an answer

Freedom

Flow

Stability

Nil

A binary solution consists of:

Choose an answer

One component

Two components

Three components

Many components

More Classes

Other Links

9th Class Chemistry English Medium KPK Boards Online Mcqs 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