Category : Chemistry

Mole SI Unit Quiz: How Much You Know About Mole SI Unit?

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Questions & Options


1. When 22.4L of H₂(g) is mixed with 11.2L of CL₂(g), each at STP, the moles of HCL(g) formed is equal to...

183054 1 mole of HCL(g)
183055 2 moles of HCL(g)
183056 0.5 moles of HCL(g)
183057 1.5 moles of HCL(g)

2. 20.0g of a magnesium carbonate sample decomposes on heating to give carbon dioxide and 8.0g magnesium oxide. What will be the percentage purity of magnesium carbonate in the sample? (atomic weight of Mg=24)

183058 75
183059 96
183060 60
183061 84

3. 6.02×10²ºmolecules of urea are present in 100 ml of its solution. The concentration of the solution is...

183062 0.02M
183063 0.01M
183064 0.001M
183065 0.1M

4. Volume occupied by one molecule of water (density=1g cmˉ³)...

183066 9.0×10×ˉ²³cm³
183067 6.023×10ˉ²³cm³
183068 3.0×10ˉ²³cm³
183069 5.5×10ˉ²³cm³

5. The number of moles of MnOˉ₄ required to oxidize one mole of ferrous oxalate completely in an acidic medium will be...

183070 0.6mole
183071 0.4mole
183072 7.5mole
183073 0.2mole

6. The number of moles of KMnO₄ reduced by one mole of Kl in alkaline medium is...

183074 One fifth
183075 Five
183076 One
183077 Two

7. Percentage of Se in peroxidase anhydrase enzyme is 0.5% by weight (at. weight=78.4), then minimum molecular weight of peroxidase anhydrase enzyme is...

183078 1.568×10³
183079 15.68
183080 2.168×10⁴
183081 1.568×10⁴

8. In the reaction- 4NH₃(g)+5O₂(g)+6H₂O(l) When 1 mole of ammonia and 1 mole of O₂ are made to react to completion, then...

183082 1.0 mole of H₂O is produced
183083 1.0 mole of NO will be produced
183084 All the oxygen will be consumed
183085 All the ammonia will be consumed

9. 0.24g of a volatile gas, upon vaporization, gives 45ml vapor at NTP. What will be the vapor density of the substance? (density of H₂=0.089)...

183086 95.93
183087 59.93
183088 95.39
183089 5.993

10. The percentage weight of Zn in white vitrol [ZnSO₄•7H₂O] is approximately equal to (at. mass of Zn=65, S=32, O=16 and H=1)...

183090 33.65%
183091 32.56%
183092 23.65%
183093 22.65%

11. The number of gram molecules of oxygen in 6.02×10²⁴ CO molecules is...

183094 10g molecules
183095 5g molecules
183096 1g molecule
183097 0.5g molecule

12. What is the weight of oxygen required for the complete combustion of 2.8kg of ethylene?

183098 2.8kg
183099 6.4kg
183100 9.6kg
183101 96kg
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