Stoichiometry 1 kg of calcium carbide (CaC₂) produces about 0.41 kg of acetylene gas on treatment with water. How many hours of service can be derived from 1 kg of calcium carbide in an acetylene lamp burning 35 litres of gas at NTP per hour? 15 5 10 20 15 5 10 20 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry At standard conditions, N₂ + 2O₂ ⇋ 2NO₂; ΔG° = 100 kJ/moleNO + ½O₂ ⇋ 2NO₂; ΔG° = -35 kJ/moleThe standard free energy of formation of NO in kJ/mole is 85 170 30 15 85 170 30 15 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry In case of a ternery system involving two liquid components and a solute, the ratio of the concentration of the solute in the two phases at equilibrium is called the distribution co-efficient. The distribution co-efficient depends upon the Both A & B Temperature Neither A nor B Solute concentration Both A & B Temperature Neither A nor B Solute concentration ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry 6 gms of magnesium (atomic weight = 24), reacts with excess of an acid, the amount of H₂ produced will be __________ gm. gm. 5 0.5 1 3 5 0.5 1 3 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Which of the following ratios defines the recycle ratio in a chemical process? Recycle stream/gross feed stream Gross feed stream/recycle feed stream None of these Recycle stream/fresh feed stream Recycle stream/gross feed stream Gross feed stream/recycle feed stream None of these Recycle stream/fresh feed stream ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Assume that benzene is insoluble in water. The normal boiling points of benzene and water are 80.1 and 100°C respectively. At a pressure of 1 atm, the boiling point of a mixture of benzene and water is Less than 80.1°C Greater than 80.1°C but less than 100°C 100°C 80.1°C Less than 80.1°C Greater than 80.1°C but less than 100°C 100°C 80.1°C ANSWER DOWNLOAD EXAMIANS APP
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