Hydrogen And Its Compound Test

Result

Hydrogen And Its Compound Test - 1

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Score
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Rank

Time Taken: -

Question 1/5
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Heavy water is

Correct

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Skipped
A
Water containing Fe,Cr,Mn

Correct

Wrong

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B
Water at 0°C

Correct

Wrong

Skipped
C
D₂O

Correct

Wrong

Skipped
D
Water obtained after a number of distillations

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Solutions

D₂O in which D = ₁H²
Question 2/5
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Which of the following statements do not define the characteristic property of water “Water is a universal solvent”

Correct

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A
It can dissolve maximum number of compounds

Correct

Wrong

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B
It has very low dielectric constant

Correct

Wrong

Skipped
C
It has high liquid range

Correct

Wrong

Skipped
D
None of these

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Solutions

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 3/5
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The velocity of neutrons in nuclear reactor is slowed down by

Correct

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A
Heavy water (D₂O)

Correct

Wrong

Skipped
B
Ordinary water (H₂O)

Correct

Wrong

Skipped
C
Zinc rod

Correct

Wrong

Skipped
D
Fused caustic soda

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Solutions

Heavy water i.e., D₂O slows down the speed of neutrons in nuclear reactors..
Question 4/5
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Temporary hardness of water is due to the presence of

Correct

Wrong

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A
Magnesium bicarbonate

Correct

Wrong

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B
Calcium chloride

Correct

Wrong

Skipped
C
Magnesium sulphate

Correct

Wrong

Skipped
D
Calcium carbonate

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Solutions

Chlorides and sulphates of Mg and Ca produces permanent hardness and bicarbonates of Mg and Ca produces temporary hardness.
Question 5/5
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Which of the following is not true

Correct

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A
Hardness of water depends on its behaviour towards soap

Correct

Wrong

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

Correct

Wrong

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

Correct

Wrong

Skipped
D
Permanent hardness can be removed by boiling the water

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Solutions

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

Question 1/5

Water containing Fe,Cr,Mn

Water at 0°C

D₂O

Water obtained after a number of distillations

Question 2/5

It can dissolve maximum number of compounds

It has very low dielectric constant

It has high liquid range

None of these

Question 3/5

Heavy water (D₂O)

Ordinary water (H₂O)

Zinc rod

Fused caustic soda

Question 4/5

Magnesium bicarbonate

Calcium chloride

Magnesium sulphate

Calcium carbonate

Question 5/5

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

Question 1/5

Water containing Fe,Cr,Mn

Water at 0°C

D2O

Water obtained after a number of distillations

Question 2/5

It can dissolve maximum number of compounds

It has very low dielectric constant

It has high liquid range

None of these

Question 3/5

Heavy water (D2O)

Ordinary water (H2O)

Zinc rod

Fused caustic soda

Question 4/5

Magnesium bicarbonate

Calcium chloride

Magnesium sulphate

Calcium carbonate

Question 5/5

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

D₂O

Heavy water (D₂O)

Ordinary water (H₂O)