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Stoichiometry

Stoichiometry
N₂ content in a urea sample was found to be only 42%. What is the actual urea content of the sample ? (molecular weight of urea = 60)

0.98
0.9
0.95
0.8

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Stoichiometry
pH value of H₂SO₄ (5% concentration) is

> 7
< 7
7
5

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Stoichiometry
The atomic heat capacities of all solid elements __________ with decrease in temperature.

Approach zero at 0°C
Decreases
Increases
Remains unchanged

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Stoichiometry
The boiling points for pure water and pure toluene are 100°C and 110.6°C respectively. Toluene and water are completely immiscible in each other. A well agitated equimolar mixture of toluene and water are prepared. The temperature at which the above mixture will exert a pressure of one standard atm. is

100°C
Less than 100°C
Between 100 and 110°C
110.6°C

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Stoichiometry
The effect of pressure on the heat capacity of the gases __________ is negligible.

Both A & B
Neither A nor B
Below the critical temperature
At pressure below one atmosphere

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Stoichiometry
1 kg/cm² is equal to

10 metres of water column
1 metre of water column
1KPa
760 torr

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