Chemical Process Calculations Mid - II, November - 2014

1.Liquid ammonia has _________ specific heatas compared to water
  • Higher
  • lower
  • equal
  • not comparable
Answer: A
2._______________ serves as reference for material balance computations
  • reactant
  • tie substance
  • recycle stream
  • products
Answer: B
3.In a recycle operation, the total feed is made up of ________
  • Fresh feed + product
  • fresh feed + purge
  • fresh feed + recycle stock
  • recycle stock + purge
Answer: C
4.Combustion reaction is
  • An endothermic reaction
  • An exothermic reaction
  • An autocatalytic reaction
  • A photochemical reaction
Answer: B
5.Trouton’s Ratio is defined as the ratio of the --- of a substance at its normal boiling point to the absolute temperature
  • Volume
  • Mass
  • Molal heatvaporization
  • Density
Answer: D
6.What is the % moisture removed, If 300g of a wet cake with 40% moisture is sent for drying to give the cake with 1% moisture
  • 98.5
  • 96.5
  • 97.5
  • 99.5
Answer: C
7.The kinetic energy of a body of mass, m,moving at an average velocity of ū
  • m/ū
  • mū
  • mū2
  • ½ mū2
Answer: D
8.The heat of reaction resulting from the oxidation of the substance with molecular oxygen is called as
  • Heat of dilution
  • Heat of formation
  • Heat of combustion
  • Heat of dissolution
Answer: C
9.1 Cal = ___________ J
  • 4.184
  • 1/4.184
  • 4184
  • 1/4184
Answer: A
10.The standard temperature and pressure for standard heat of reaction are
  • 250C, 2atm
  • 1000C, 2atm
  • 250C, 1atm
  • 1000C, 1atm
Answer: C
11.A process in which no continuous Streams of material enter or leave the system is ______________
Answer: Non flow Process
12.The total feed is made up of a mixture of the ____________ and _____________
Answer: Fresh feed & recycle stock
13.The reverse process ofDissolution is known as ________________
Answer: Crystallization
14.The energy required to heat one pound ofwater through a temperature range of 10F is _________
Answer: British thermal unit
15.The temperature attained when a fuel is burned in air or Oxygen without gain or loss of heat is termed the _____________ temperature
Answer: Theoretical Flame Temperature
16.Heat of formation is __________ for an exothermic compound
Answer: Negative
17.The reverse process of Dissolution is known as________________________
Answer: Crystalization
18.The ratio of the quantity of a reactant recycled to the quantity of thatsame reactant entering a recycling operation as fresh feed is called as _________________________
Answer: Recycle Ratio
19.1kg of cotton seeds from 80.4% oil to 2% oil by treating with a solvent. The percentage oil extracted is________________________
Answer: 83%
20.Empirically heat capacity can be expressed in terms of T as _______________________
Answer: a + bT + cT2