Hydrogen And Its Compound Test

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Hydrogen And Its Compound Test - 1

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Weekly Quiz Competition

Question 1
1 / -0

Heavy water is

A
Water containing Fe,Cr,Mn

B
Water at 0°C

C
D₂O

D
Water obtained after a number of distillations

Solution

D₂O in which D = ₁H²
Question 2
1 / -0

Which of the following statements do not define the characteristic property of water “Water is a universal solvent”

A
It can dissolve maximum number of compounds

B
It has very low dielectric constant

C
It has high liquid range

D
None of these

Solution

Water has high dielectric constant i.e., 82, high liquid range and can dissolve maximum number of compounds. That is why it is used as universal solvent.
Question 3
1 / -0

The velocity of neutrons in nuclear reactor is slowed down by

A
Heavy water (D₂O)

B
Ordinary water (H₂O)

C
Zinc rod

D
Fused caustic soda

Solution

Heavy water i.e., D₂O slows down the speed of neutrons in nuclear reactors..
Question 4
1 / -0

Temporary hardness of water is due to the presence of

A
Magnesium bicarbonate

B
Calcium chloride

C
Magnesium sulphate

D
Calcium carbonate

Solution

Chlorides and sulphates of Mg and Ca produces permanent hardness and bicarbonates of Mg and Ca produces temporary hardness.
Question 5
1 / -0

Which of the following is not true

A
Hardness of water depends on its behaviour towards soap

B
The temporary hardness is due to the presence of Ca and Mg bicarbonates

C
Permanent hardness is due to the presence of soluble Ca and Mg sulphates, chlorides and nitrates

D
Permanent hardness can be removed by boiling the water

Solution

Permanent hardness cannot be removed by boiling of water but temporary hardness can be removed.

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Re-Attempt Weekly Quiz Competition

Hydrogen And Its Compound Test - 1

Result

Hydrogen And Its Compound Test - 1

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SHARING IS CARING

Question 1

Water containing Fe,Cr,Mn

Water at 0°C

D2O

Water obtained after a number of distillations

Solution

Question 2

It can dissolve maximum number of compounds

It has very low dielectric constant

It has high liquid range

None of these

Solution

Question 3

Heavy water (D2O)

Ordinary water (H2O)

Zinc rod

Fused caustic soda

Solution

Question 4

Magnesium bicarbonate

Calcium chloride

Magnesium sulphate

Calcium carbonate

Solution

Question 5

Hardness of water depends on its behaviour towards soap

The temporary hardness is due to the presence of Ca and Mg bicarbonates

Permanent hardness is due to the presence of soluble Ca and Mg sulphates, chlorides and nitrates

Permanent hardness can be removed by boiling the water

Solution

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D₂O

Heavy water (D₂O)

Ordinary water (H₂O)