Question # 1

Oxidation means

Choose an answer

Gain of oxygen

Removal of oxygen

Gain of hydrogen

Gain of electrons

All electrolytes are:

Choose an answer

Conductor

Insulator

Semi conductor

Nil

Nelson's cells used to prepare caustic soda along with gases. Which of the following gas is produced at cathode?

Choose an answer

CI₂

H₂

O₃

O₂

During the formation of water from hydrogen and oxygen, which of the following does not occur?

Choose an answer

Hydrogen has oxidized

oxygen has reduced

oxygen gains electrons

hydrogen behaves as oxidizing agent

It is a good reducing agent

Choose an answer

Fe

H

C

O

In the redox reaction between zn and HCI. the oxidizing agent is:

Choose an answer

zn

H⁺

C

H²

____________ are good conductors of electricity.

Choose an answer

Covalent compound

Metals

Both

None of these

Which one is strong electrolyte ?

Choose an answer

NH4OH

NaOH

a & b

Nil

The cathode of Nelson's cell is made up of

Choose an answer

C

Zn

Cu

Fe

____________ cell is made of two half of cells.

Choose an answer

Zinc cell

Galvanic

Both

All

In metal hydrides, the oxidation number of hydrogen is

Choose an answer

+1

-1

+2

-2

Reduction means

Choose an answer

Removal of H2

Removal of electrons

Gain of electrons

Gain of O2

Which is used for industrial manufacture of NaCI?

Choose an answer

Daniel cell

Down's cell

Nelson's cell

None of these

More Classes

Other Links

Chemistry 9th Class English Medium Unit 7 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