Inorganic Chemistry Test

Result

Inorganic Chemistry Test - 6

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following is not a property of carbon monoxide?

A
Tasteless

B
Insoluble in water

C
Oxidising agent

D
No effect on limewater

Solution

Carbon monoxide is not used as an oxidising agent; rather, it is a good reducing agent.
Question 2
1 / -0

Why is carbon monoxide poisonous to living beings?

A
It damages the white blood cells.

B
It prevents red blood cells from absorbing oxygen.

C
It secretes toxins inside the body.

D
It damages the brain cells.

Solution

Carbon monoxide is poisonous to living beings because it prevents red blood cells from absorbing oxygen. It is very dangerous because it sticks to haemoglobin better than oxygen does.
Question 3
1 / -0

Which of the following products is formed when carbon monoxide reacts with chlorine in the presence of sunlight?

A
Phosgene

B
Carbon dioxide

C
Carbon tetrachloride

D
Hydrochloric acid

Solution

When carbon monoxide reacts with chlorine in the presence of sunlight, phosgene will be formed.
Question 4
1 / -0

Why is carbon dioxide passed through U - tube containing anhydrous calcium chloride during its purification?

A
To absorb moisture

B
To remove hydrogen chloride gas

C
To remove soluble impurities

D
To remove sulphur dioxide gas

Solution

Carbon dioxide is passed through U-tube containing anhydrous calcium chloride during its purification to absorb moisture.
Question 5
1 / -0

Why is sulphuric acid not used in the lab preparation of carbon dioxide from calcium carbonate?

A
Because it does not react with calcium carbonate

B
Because it forms a crust of insoluble calcium sulphate

C
Because it produces carbon monoxide

D
Because it forms toxic sulphur

Solution

Sulphuric acid is not used in the lab preparation of carbon dioxide from calcium carbonate because it forms a crust of insoluble calcium sulphate.
Question 6
1 / -0

At what temperature is carbon dioxide solidified to form dry ice?

A
0°C

B
– 4°C

C
– 78°C

D
4°C

Solution

At – 78°C temperature, carbon dioxide is solidified to form dry ice.
Question 7
1 / -0

Why does lime water turn milky when CO₂ gas is passed through it?

A
Due to formation of insoluble calcium carbonate

B
Due to formation of soluble calcium hydrogen carbonat

C
Due to formation of insoluble calcium hydrogen carbonate

D
Due to formation of soluble calcium oxide

Solution

Limewater turns milky when CO₂ gas is passed through it due to the formation of insoluble calcium carbonate.
Question 8
1 / -0

Which of the following is not a use of CO₂?

A
Preparation of aerated drinks

B
Preservation of eatables

C
Used as a reducing agent

D
Relieves gas pressure in stomach

Solution

Carbon dioxide is not used as a reducing agent.
Question 9
1 / -0

Which of the following substances is poisonous?

A
CO₂

B
HCl

C
HNO₃

D
CO

Solution

Carbon monoxide is a poisonous gas.
Question 10
1 / -0

The tape in an audio cassette is coated with

A
copper sulphates

B
ferromagnetic powder

C
mica

D
zinc oxide

Solution

The tape is composed of a thin plastic substance bonded with a coating of ferric oxide powder. This powder is ferromagnetic, which allows for it to become magnetised by a magnetic field. This ability gives magnetic tape two of its most appealing features:

1. You can record anything you want instantly and the tape will remember what you recorded for playback at any time.
2. You can erase the tape and record something else on it any time you like.

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Re-Attempt Weekly Quiz Competition

Inorganic Chemistry Test - 6

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Inorganic Chemistry Test - 6

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Question 1

Tasteless

Insoluble in water

Oxidising agent

No effect on limewater

Solution

Question 2

It damages the white blood cells.

It prevents red blood cells from absorbing oxygen.

It secretes toxins inside the body.

It damages the brain cells.

Solution

Question 3

Phosgene

Carbon dioxide

Carbon tetrachloride

Hydrochloric acid

Solution

Question 4

To absorb moisture

To remove hydrogen chloride gas

To remove soluble impurities

To remove sulphur dioxide gas

Solution

Question 5

Because it does not react with calcium carbonate

Because it forms a crust of insoluble calcium sulphate

Because it produces carbon monoxide

Because it forms toxic sulphur

Solution

Question 6

0°C

– 4°C

– 78°C

4°C

Solution

Question 7

Due to formation of insoluble calcium carbonate

Due to formation of soluble calcium hydrogen carbonat

Due to formation of insoluble calcium hydrogen carbonate

Due to formation of soluble calcium oxide

Solution

Question 8

Preparation of aerated drinks

Preservation of eatables

Used as a reducing agent

Relieves gas pressure in stomach

Solution

Question 9

CO2

HCl

HNO3

CO

Solution

Question 10

copper sulphates

ferromagnetic powder

mica

zinc oxide

Solution

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CO₂

HNO₃