The number of moles of KMnO₄ reduced by one mole of KI in an alkaline medium is- 

1. One fifth 

2. Five

3. One

4. Two

Number of moles of Mn${\mathrm{O}}_4^{-}$ required to oxidise one mole of ferrous oxalate completely in acidic medium will be 

1. 0.6 mole

2. 0.4 mole

3. 7.5 moles

4. 0.2 mole

5mL of NHCl, 20 mL of N/2 H₂SO₄ and 30mL of N/3 HNO₃ are mixed together and volume made one litre. The normality of the resulting solution is:

1. N/5

2. N/10

3. N/20

4. N/40

When a metal is burnt, its mass is increased by 24 percent. The equivalent mass of the metal will be:

1. 25

2. 24

3. 33.3

4. 76

1g of pure calcium carbonate was found to require 50 mL of dilute HCl for complete reactions. The strength of the HCl solution is given by:

1. 4N

2. 2N

3. 0.4N

4. 0.2N

The equivalent mass of H₃PO₄ in the following reaction is,

H₃PO₄ + Ca(OH)₂ $\to$CaHPO₄ + 2H₂O

1. 98

2. 49

3. 32.66

4. 40

1.520g of the hydroxide of a metal on ignition gave 0.995 g of oxide. The equivalent mass of metal is:

1. 1.520

2. 0.995

3. 19.00

4. 9.00

0.5 g of fuming H₂SO₄ (oleum) is diluted  with water. This solution is completely neutralised by 26.7 mL of 0.4 N NaOH. The percentage of free SO₃ in the sample is:

1. 30.6% 

2. 40.6%

3. 20.6%

4. 50%

One g of a mixture of Na₂CO₃ and NaHCO₃ consumes y equivalent of HCl for complete neutralisation. One g of the mixture is strongly heated, then cooled and the residue treated with HCl. How many equivalent of HCl would be required for complete neutralisation?

1. 2y equivalent

2. y equivalent

3.  3y/4 equivalent

4. 3y/2 equivalent

The chloride of a metal contains 71% chlorine by mass and the vapour density of it is 50. The atomic mass of the metal will be:

1. 29

2. 58

3. 35.5

4. 71