What will be the normality of a solution obtained by mixing 0.45 N and 0.60 N NaOH in the ratio 2:1 by volume? 1. 0.4 N 2. 0.5 N 3. 1.05 N 4. 0.15 N

Subtopic:  Equivalent Weight |
74%
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0.7 g of Na2CO3.xH2O were dissolved in water and the volume was made to 100mL, 20mL of this solution required 19.8 mL of N/10 HCl for complete neutralization. The value of x is:

1. 7

2. 3

3. 2

4. 5

Subtopic:  Equivalent Weight |
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A metal oxide is reduced by heating it in a stream of hydrogen. It is found that after complete reduction, 3.15 g of the oxide have yielded 1.05g of the metal. We may deduce that:

1. the atomic mass of the metal is 8

2. the atomic mass of the metal is 4

3. the equivalent mass of the metal is 4

4. the equivalent mass of the metal is 8

Subtopic:  Equivalent Weight |
65%
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An oxide of metal has 20% oxygen, the equivalent mass of oxide is:

1. 32

2. 40

3. 48

4. 52

Subtopic:  Equivalent Weight |
55%
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How much water is to be added to dilute 10 mL of 10N HCl to make it decinormal?

1. 990mL

2. 1010 mL

3. 100mL

4. 1000mL

Subtopic:  Equivalent Weight |
57%
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W1 g of an element combines with oxygen forming W2 g of its oxide. The equivalent mass of the element is:

1. [W1 / W2]x8

2. [W1 / W2-W1]x8

3. [W2-W1/W1 ]x8

4. [W1 / W1-W2]x8

Subtopic:  Equivalent Weight |
64%
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The normality of 4% (mass/Vol.) NaOH is:

1. 0.1

2. 1.0

3. 0.05

4. 0.01

Subtopic:  Equivalent Weight |
61%
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The number of peroxide linkages in CrO5 is /are

1. One

2. Two

3. Three

4. None of the above

Subtopic:  Oxidizing & Reducing Agents |
74%
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Conversion of PbSO4 to Pbs is:

1. Reduction of S

2. Oxidation of S

3. Dissociation

4. None of the above

Subtopic:  Oxidizing & Reducing Agents |
77%
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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 |
67%
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