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Home⇒ Engineering⇒
Stoichiometry
1-Dont try to cram or spend more time here just read it fast and cover syllabus then practice MCQ's cheptor of same topic to check your progress. . |
2-Wrong options are also given but dont concentrate there, Right answer is in bold format. |
Q1 ⇒ With increase in temperature, the surface tension of water decreases [other wrong options] [Discuss in forum] increases remains constant increases linearly |
Q2 ⇒ Pick out the wrong statement. Density of dry air at N.T.P. is 1 gm/litre. [other wrong options] [Discuss in forum] One kg-mole of an ideal gas occupies 22.4 m3 at N.T.P. One lb-mole of an ideal gas occupies 359 ft3 at N.T.P. One gm-mole of an ideal gas occupies 22.4 litres (i.e., 22400 c.c) at N.T.P. |
Q3 ⇒ Boiling point of a solution as compared to that of the corresponding solvent is more [other wrong options] [Discuss in forum] less same either more or less; depends upon the solvent |
Q4 ⇒ One mole of methane undergoes complete combustion in a stoichiometric amount of air. The reaction proceeds as CH4 + 2O2 → CO2 + 2H2O. Both the reactants and products are in gas phase. ΔH°298 = - 730 kJ/mole of methane. If the average specific heat of all the gases/vapour is 40 J/mole.K, the maximum temperature rise of the exhaust gases in °C would be approximately equal to 1735 [other wrong options] [Discuss in forum] 1225 1335 1525 |
Q5 ⇒ How many phases are present at eutectic point ? 3 [other wrong options] [Discuss in forum] 1 2 unpredictable |
Q6 ⇒ 1 torr is equivalent to 1 mm Hg [other wrong options] [Discuss in forum] 1 Pascal 1 ata 1 mm wc |
Q7 ⇒ The molecules of a liquid which is in equilibrium with its vapor at its boiling point on an average have equal __________ in the two phases. kinetic energy [other wrong options] [Discuss in forum] potential energy intermolecular forces total energy |
Q8 ⇒ If the absolute temperature of an ideal gas is tripled and simultaneously the pressure is reduced to one third; then the volume of gas will increase nine fold [other wrong options] [Discuss in forum] remain unaltered increase three fold decrease three fold |
Q9 ⇒ Avogadro number is the number of molecules in one __________ of a gas. gm.mole [other wrong options] [Discuss in forum] gram kilogram litre |
Q10 ⇒ The atomic weight of helium is 4 times that of hydrogen. Its diffusion rate as compared to hydrogen will be __________ times. 2 [other wrong options] [Discuss in forum] 42737 4 42739 |
Q11 ⇒ Pick out the wrong statement about the recycle stream in a process. Recycling in a process does not help in getting higher extent of reaction. [other wrong options] [Discuss in forum] Recycling in a process stream helps in utilising the valuable reactants to the maximum with minimum loss of reactants. The ratio of the quantity of a reactant present in the reactor feed of a recycling operation to the quantity of the same reactant entering the process as fresh feed is called combined feed ratio. Recycling is exemplified by refluxing back a part of the distillate to the distillation column to maintain the quantity of liquid within the column. |
Q12 ⇒ 40 gms each of the methane and oxygen are mixed in an empty container maintained at 40°C. The fraction of the total pressure exerted by oxygen is 42738 [other wrong options] [Discuss in forum] 42737 42739 42769 |
Q13 ⇒ Boiling point of a non-homogeneous mixture of immiscible liquids is __________ that of any one of its separate components. lower than [other wrong options] [Discuss in forum] higher than equal to either (a) or (b); depends on the liquids |
Q14 ⇒ With rise in temperature, the solubility of ammonia in water at a fixed pressure decreases [other wrong options] [Discuss in forum] increases remains unchanged increases exponentially |
Q15 ⇒ Which of the following gases is the most soluble in water ? NH3 [other wrong options] [Discuss in forum] CO2 H2S CH4 |
Q16 ⇒ In case of vapor-liquid equilibria, which of the following does not account for gas phase deviation from ideality? Activity co-efficient [other wrong options] [Discuss in forum] Use of equation of state Fugacity co-efficient None of these |
Q17 ⇒ 1m3 is approximately equal to 35 ft3 [other wrong options] [Discuss in forum] 28 litres 4.5 litres 4.5 ft3 |
Q18 ⇒ Pick out the wrong unit conversion of thermal conductivity. 1 BTU/ft2.hr.°F/inch = 1.488 kcal/m2. hr.°C/m [other wrong options] [Discuss in forum] 1 BTU/ft2.hr.°F/ft = 1.488 kcal/m2. hr.°C/m 1 kcal/m.hr.°C = 0.672 BTU/ft.hr.°F = 1.163 W/m. °K 1 W/cm.°C = 85.985 kcal/m.hr.°C = 57.779 BTU/ft.hr.°F |
Q19 ⇒ The heat of vaporisation __________ with increase in pressure. both (b) and (c) [other wrong options] [Discuss in forum] increases decreases becomes zero at critical pressure |
Q20 ⇒ 1 Kcal/kg. °C is equivalent to __________ BTU/lb. °F. 1 [other wrong options] [Discuss in forum] 2.42 4.97 none of these |
Or |