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Stoichiometry

Stoichiometry
Which of the following is not a unit of length?

Parsec
Angstrom
Barn
Fermi

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Stoichiometry
Weight of 56 litres of ammonia at N.T.P. is __________ gm.

56
2.5
42.5
2800

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Stoichiometry
A gas at 0°C is cooled at constant pressure until its volume becomes half the original volume. The temperature of the gas at this state will be

-273°C
0°K
-136.5°C
- 136.5°K

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Stoichiometry
The vapor pressure of water at 100°C is

100N/m²
760 mm wc
76 cms of Hg
13.6 cms of Hg

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Stoichiometry
80 kg of Na₂SO₄ (molecular weight = 142) is present in 330 kg of an aqueous solution. The solution is cooled such that. 80 kg of Na₂SO₄ .10H₂O crystals separate out. The weight fraction of Na₂SO₄ in the remaining solution is

1
0.24
0.18

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Stoichiometry
Pick out the wrong unit conversion of calorific value.

1 BTU/lb = 2.3 kcal/kg
1 kcal/m³ = 0.1124 BTU/ft³
1 kcal/kg = 1.8 BTU/lb = 4.186 kJ/kg
1 BTU/ft³ = 8.9 kcal/m³ = 0.038 MJ/m³

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