Hydrogen Test

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Hydrogen Test - 9

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Weekly Quiz Competition

Question 1
4 / -1

Calgon softens hard water by

A
Precipation of Ca²⁺ & Mg²⁺ ions

B
Coagulation of solts

C
Complexing Ca²⁺ & Mg²⁺ ions

D
1 & 3
Question 2
4 / -1

The % (mass) of deuterium in heavy water is

A
18.0

B
Cannot be predicted

C
11.1

D
20.0
Question 3
4 / -1

H₂O₂ is not used as

A
Oxidising agent

B
Redusing agent

C
Catalyst

D
Bleaching
Question 4
4 / -1

10 ml of KMnO₄ Solution is required it completely oxidise acidic solution of 30 ml of 1.5 Volume strength H₂O₂.Calculate normality of KMnO₄ Solution

A
0.4

B
0.65

C
0.19

D
0.8

Solution
Question 5
4 / -1

When a substance A reacts with water it produces a combustible gas B and a solution of substance C in water. When another substance D reacts with this solution of C, it also produces the same gas B on warming but D can produce gas B on reaction with dilute sulphuric acid at room temperature. A imparts a deep golden yellow colour to a smokeless flame of Bunsen burner. A, B, C and D respectively are

A
Na , H₂, NaOH, Zn

B
K, H₂, KOH, Al

C
Ca, H₂, Ca(OH)₂, Sn

D
CaC₂, C₂H₂, Ca(OH)₂, Fe

Solution
Question 6
4 / -1

Hydrogen molecule differs from chlorine molecule in the following respect.

A
Hydrogen molecule is non-polar but chlorine molecule is polar

B
Hydrogen molecule is polar while chlorine molecule is non-polar

C
Hydrogen molecule can form intermolecular hydrogen bonds but chlorine molecule does not

D
Hydrogen molecule cannot participate in coordinate bond formation but chlorine molecule can
Question 7
4 / -1

In context with the industrial preparation of hydrogen from water gas (CO + H₂), which of the following is the correct statement?

A
CO and H₂ are fractionally separated using differences in their densities

B
CO is removed by absorption in aqueous Cu₂Cl₂ solution

C
H₂ is removed through occlusion with Pd

D
CO is oxidised to CO₂ with steam in the presence of a catalyst followed by absorption of CO₂ in alkali
Question 8
4 / -1

In which of the following reactions, H₂O₂ is acting as a reducing agent?

A
SO₂ + H₂O₂ → H₂ SO₄

B
2KI + H₂O₂ → 2KOH + I₂

C
PbS + 4H₂O₂ → PbSO₄ + 4H₂O

D
Ag₂O + H₂O₂ → 2Ag + H₂O + O₂
Question 9
4 / -1

Which one of the following reactions represents the oxidising property of H₂O₂ ?

A
2KMnO₄ + 3H₂ SO₄ + 5H₂O₂ → K₂SO₄ + 2MnSO₄ + 8H₂O + 5O₂

B
2K₃ [Fe(CN)₆ ] + 2KOH + H₂O₂ → 2K₄ [Fe(CN)₆] + 2H₂O + O₂

C
PbO₂ + H₂O₂ → PbO + H₂O + O₂

D
2KI + H₂ SO₄ + H₂O₂ → K₂SO₄ + I₂ + 2H₂O

Solution
Question 10
4 / -1

Assertion (A) NaCl is less soluble in heavy water than in ordinary water.
Reason (R) Dielectric constant of ordinary water is more than that of heavy water.

A
Both A and R are correct and R is the correct explanation of A

B
Both A and R are correct but R is not the correct explanation of A

C
A is correct but R is not correct

D
A is not correct but R is correct

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Re-Attempt Weekly Quiz Competition

Hydrogen Test - 9

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Hydrogen Test - 9

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SHARING IS CARING

Question 1

Precipation of Ca2+ & Mg2+ ions

Coagulation of solts

Complexing Ca2+ & Mg2+ ions

1 & 3

Question 2

18.0

Cannot be predicted

11.1

20.0

Question 3

Oxidising agent

Redusing agent

Catalyst

Bleaching

Question 4

0.4

0.65

0.19

0.8

Solution

Question 5

Na , H2, NaOH, Zn

K, H2, KOH, Al

Ca, H2, Ca(OH)2, Sn

CaC2, C2H2, Ca(OH)2, Fe

Solution

Question 6

Hydrogen molecule is non-polar but chlorine molecule is polar

Hydrogen molecule is polar while chlorine molecule is non-polar

Hydrogen molecule can form intermolecular hydrogen bonds but chlorine molecule does not

Hydrogen molecule cannot participate in coordinate bond formation but chlorine molecule can

Question 7

CO and H2 are fractionally separated using differences in their densities

CO is removed by absorption in aqueous Cu2Cl2 solution

H2 is removed through occlusion with Pd

CO is oxidised to CO2 with steam in the presence of a catalyst followed by absorption of CO2 in alkali

Question 8

SO2 + H2O2 → H2 SO4

2KI + H2O2 → 2KOH + I2

PbS + 4H2O2 → PbSO4 + 4H2O

Ag2O + H2O2 → 2Ag + H2O + O2

Question 9

2KMnO4 + 3H2 SO4 + 5H2O2 → K2SO4 + 2MnSO4 + 8H2O + 5O2

2K3 [Fe(CN)6 ] + 2KOH + H2O2 → 2K4 [Fe(CN)6] + 2H2O + O2

PbO2 + H2O2 → PbO + H2O + O2

2KI + H2 SO4 + H2O2 → K2SO4 + I2 + 2H2O

Solution

Question 10

Both A and R are correct and R is the correct explanation of A

Both A and R are correct but R is not the correct explanation of A

A is correct but R is not correct

A is not correct but R is correct

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Precipation of Ca²⁺ & Mg²⁺ ions

Complexing Ca²⁺ & Mg²⁺ ions

Na , H₂, NaOH, Zn

K, H₂, KOH, Al

Ca, H₂, Ca(OH)₂, Sn

CaC₂, C₂H₂, Ca(OH)₂, Fe

CO and H₂ are fractionally separated using differences in their densities

CO is removed by absorption in aqueous Cu₂Cl₂ solution

H₂ is removed through occlusion with Pd

CO is oxidised to CO₂ with steam in the presence of a catalyst followed by absorption of CO₂ in alkali

SO₂ + H₂O₂ → H₂ SO₄

2KI + H₂O₂ → 2KOH + I₂

PbS + 4H₂O₂ → PbSO₄ + 4H₂O

Ag₂O + H₂O₂ → 2Ag + H₂O + O₂

2KMnO₄ + 3H₂ SO₄ + 5H₂O₂ → K₂SO₄ + 2MnSO₄ + 8H₂O + 5O₂

2K₃ [Fe(CN)₆ ] + 2KOH + H₂O₂ → 2K₄ [Fe(CN)₆] + 2H₂O + O₂

PbO₂ + H₂O₂ → PbO + H₂O + O₂

2KI + H₂ SO₄ + H₂O₂ → K₂SO₄ + I₂ + 2H₂O