Which of the following unit operation is based on difference in freezing point?
  • a) Adsorption
  • b) Extraction
  • c) Crystallization
  • d) Distillation
Which of the following relation between driving force and unit operation is correct?
  • a) Crystallization – relative solubility in different solvents
  • b) Extraction – relative volatilities
  • c) Absorption – freezing point difference
  • d) Adsorption – relative adherence
Which one of the following is a wrong statement?
  • a) Pressure and temperature requirements are higher for catalytic cracking
  • b) Rate of polymerization is increased by increasing pressure
  • c) Thermal pyrolysis of methane and ethane require quenching
  • d) Higher the molecular weight, higher is the coking tendency
Match the following? Feed (thermal pyrolysis) Process i. Methane A. coking ii. Ethane B. Acetylene production iii. Residual crude C. Ethylene production
  • a) i-A, ii-B, iii-C
  • b) i-B, ii-C, iii-A
  • c) i-C, ii-B, iii-A
  • d) i-B, ii-A, iii-C
Which catalyst doesn’t have high tolerance towards S when it is reactivated with steam in catalytic cracking process?
  • a) Iron
  • b) Chromium
  • c) Copper
  • d) Nickel
Increase in pressure during catalytic cracking process ____________ octane number.
  • a) Decreases
  • b) Increases
  • c) Doesn’t effect
  • d) Remains same
Which of the following is not a distinctive feature of catalytic cracking process?
  • a) Less polymerization
  • b) High quality petrol
  • c) Less coke production
  • d) Less Isomerization
Thermodynamically dehydrogenation reactions are favorable at ___________
  • a) High temperature, low pressure
  • b) Low temperature, high pressure
  • c) High temperature, high pressure
  • d) Low temperature, low pressure
Which of the following statement is wrong regarding Catalytic reformates?
  • a) They contain no olefins
  • b) They are resistant to oxidation
  • c) They have low sulfur and gum content
  • d) They are low in octane number
Match the following? Process Catalyst used i. Reforming A. Platinum ii. Polymerization B.sulfuric acid iii. Isomerization C. Aluminum tri chloride
  • a) i-C, ii-B, iii-A
  • b) i-B, ii-C, iii-A
  • c) i-A, ii-B, iii-C
  • d) i-C, ii-A, iii-B
Match the following? Process Type of reactor used i. Catalytic cracking A. Tubular reactor ii. Polymerization B. Cascade reactor iii. Alkylation ( HF catalyzed) C. Moving bed reactor
  • a) i-C, ii-B, iii-A
  • b) i-B, ii-C, iii-A
  • c) i-A, ii-B, iii-C
  • d) i-C, ii-A, iii-B
0 h : 0 m : 1 s