Chemistry Chapter 2 Class 9 MCQ

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Chemistry Chapter 2 Class 9 MCQ. We covered all the Chemistry Chapter 2 Class 9 MCQ in this post for free so that you can practice well for the exam.

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MCQ of Chemistry Chapter 2 Class 9 for Students

The rotary kiln rotates

1. 10-20 turns per hour

2. 20-40 turns per hour

3. 30-60 turns per hour

4. 60-100 turns per hour

Option 3 – 30-60 turns per hour

Which slowly allows the charge in to the cylinder

1. Hopper

2. Burner

3. Screw conveyer

4. None of these

Option 3 – Screw conveyer

During passage of charge in the cylinder it loses in the beginning

1. Water

2. Carbon dioxide

3. Carbon monoxide

4. Sulphur dioxide

Option 1 – Water

At the burning end of the kiln the temperature is around

1. 1000-1100°C

2. 1100-1500°C

3. 1500-1700°C

4. 1700-1900°C

Option 4 – 1700-1900°C

Cement is a mixture of :

1. Sodium silicate and gypsum

2. Calcium silicates and calcium aluminates

3. Sand, clay and felspar

4. Calcium carbonate and sand

Option 2 – Calcium silicates and calcium aluminates

Gray hard balls of cement is called

1. Clinker cement

2. Portland cement

3. Absolute cement

4. Zypsum cement

Option 1 – Clinker cement

Cement consists zypsum

1. 10-15%

2. 1-2%

3. 2-3%

4. 3-6%

Option 3 – 2-3%

Glass is a substance

1. crystalline

2. non crystalline

3. amorphous

4. (2) and (3)

Option 4 – (2) and (3)

Glass is a ……..

1. not a true solid

2. frozen liquid

3. super cooled liquid

4. all the above

Option 4 – all the above

Glass is a mixture of

1. Calcium sillicates and calcium alluminates

2. Sodium silicate and calcium silicate

3. Sodium silicate, calcium silicate and sand

4. Sodium silicate and sand

Option 3 – Sodium silicate, calcium silicate and sand

Fine powder of Soda ash, lime stone, and sand called

1. Cullet

2. Batch

3. Charge

4. raw meal

Option 2 – Batch

Cullet is :

1. Broken glass

2. Liquefied glass

3. Super cooled glass

4. None of these

Option 1 – Broken glass

Raw materials used for glass are heated to

1.500°C

2. 1000°C

3. 1500°C

4. 2000°C

Option 2 – 1000°C

The impurities called in glass Industry

1. Cullet

2. Batch

3. Glass-gall

4. None of these

Option 3 – Glass-gall

What is the use of adding cullet to the raw materials of glass?

1. Helps in lowering the melting temperature of raw material

2. Helps in increasing the melting temperature of raw material

3. Helps in increasing the quantinty of glass

4. None

Option 1 – Helps in lowering the melting temperature of raw material

The process of cooling liquid glass is called

1. Pelverisation

2. Polymerization

3. Annealing

4. Hydrogenation

Option 3 – Annealing

Annealing strengthens the

1. cement

2. polymer

3. ceramic

4. glass

Option 4 – glass

Different kinds of glasses are obtained by varying the composition of

1. Cullet

2. Metal oxide

3. Batch

4. None of these

Option 3 – Batch

The glass used for window glass is

1. Pyrex glass

2. Soda glass

3. Quartz glass

4. Flint glass

Option 2 – Soda glass

The glass used for optics is

1. Quartz galss

2. Flint glass

3. Boro silicate glass

4. Soft glass

Option 2 – Flint glass

The glass used for laboratory glass ware is

1. pyrex glass

2. borosilicate glass

3. flint glass

4. both (1) and (2)

Option 4 – both (1) and (2)

Which of the following can be used in making electrical bulbs

1. Soda glass

2. Pyrex glass

3. Quartz glass

4. Hard glass

Option 3 – Quartz glass

Metal oxides or metal salts are added to liquid glass to get

1. Colourless glass

2. Colour glass

3. Condensed glass

4. Brittle glass

Option 2 – Colour glass

Addition of copper sulphate to glass gives which colour?

1. Yellow

2. Red

3. Blue

4. Purple

Option 3 – Blue

Addition of cupric oxide to glass gives which colour?

1. Red

2. Green

3. Orange

4. Brown

Option 1 – Red

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