An aqueous solution of SO2 reacts with H2S to precipitate sulfur. Here SO2 acts as:

1. Catalyst

2. Reducing agent

3. Oxidising agent

4. Acid

Subtopic:  Balancing of Equations | Redox Titration & Type of Redox |
 69%
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In the reaction;

2Ag + 2H2SOAg2SO4 + 2H2O + SO2, H2SO4 acts as:

1. Oxidizing agent

2. Reducing agent

3. Dehydrating agent

4. None of the above

Subtopic:  Balancing of Equations |
 75%
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In the following reaction, balancing coefficients X and Y are:

X HI + Y HNO3 NO + I2 + H2O

1. X=3, Y=2

2. X=2, Y=3

3. X=6, Y=2

4. X=6, Y=1

Subtopic:  Balancing of Equations |
 60%
From NCERT
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Which of the following is not an intramolecular redox reaction?

1. NH4NO2 N2 + 2H2O

2. 2Mn2O7 4MnO2 + 3O2

3. 2KClO3 2KCl + 3O2

4. 2H2O2 2H2O + O2

Subtopic:  Balancing of Equations |
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What will be the value of x and y by balancing the reaction

C2H5OH + X I2 + Y OH- CHI3 + HCO2- + 5I- + 5H2O

1. 4,6

2. 2,6

3. 2,4

4.  4,4

Subtopic:  Balancing of Equations |
 70%
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Which one is correct about CH2 = CCl2?

1. Both carbons are in +2 oxidation state.

2.  Both carbons are in +1 oxidation state.

3. One carbon has +2 and other -2 oxidation states.

4. The average oxidation number of carbon is +1.

Subtopic:  Balancing of Equations |
 82%
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In the given reaction,

xBrO3-+ yCr+3 + zH2Br2 + CrO42- + H+

The coefficients x, y, and z are respectively-

1. 6, 10, 11

2. 6, 10, 20

3. 6, 8, 22

4. 6, 10, 22

Subtopic:  Oxidizing & Reducing Agents | Balancing of Equations | Application of Electrode Potential |
 61%
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Identify the substance acting as an oxidant in the following reaction:

BaCl2 + Na2SO4BaSO4 + 2NaCl

1. BaCl2

2. Na2SO4

3. NaCl

4. None of the these

Subtopic:  Balancing of Equations |
 65%
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The number of moles of ferrous oxalate oxidised by one mole of KMnO4 is

(1) 52

(2) 25

(3) 35

(4) 53

Subtopic:  Balancing of Equations | Equivalent Weight |
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Which of the following equations is a balanced one

(1) 5BiO3-+ 22H+ + 2Mn2+ → 5Bi3+ + 7H2O + 2MnO4

(2)5BiO3- + 14H+ + 2Mn2+ → 5Bi3+ + 7H2O + 2MnO4

(3)2BiO3- + 4H+ + 2Mn2+ → 6Bi3+ + 2H2O + MnO4

(4) 6BiO3-+ 12H+ + 2Mn2+ → 6Bi3+ + 6H2O + 2MnO4

Subtopic:  Balancing of Equations |
 81%
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