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Technical Interview Questions - 12 contains questions about properties of Aromatics, What is cracking, What is Alkylation, What is Polymerization, Hydrogenation ,  Hydro De-sulfurization, Dew point, Dry bulb temperature, Wet bulb temperature.

121. What are the properties of Aromatics?
122. What is cracking?
123. What is Alkylation?
124. What is Polymerization?
125. What is Hydrogenation or Hydro finishing reaction?
126. What is Hydro De-sulfurization?
127. What is the reaction involved in decoking of furnace & regeneration of catalyst?
128. What is temperature? What is freezing point? What is the freezing point of kerosene?
129. What is Dew point?
130. What is Dry bulb temperature? What is Wet bulb temperature?

121. What are the properties of Aromatics?

  • They are not very reactive in spite of the presence of double bonds.
  • They behave more like saturated compounds.
  • Excellent anti-knock properties.
  • Used as commercial solvents due to their high solvent power.
  • Poor VI components.
  • Produces smoky flames

122. What is cracking?

Heavier hydro carbons are cracked or broken into smaller molecules to produce more valuable lighter products from the low priced heavier hydrocarbons.

123. What is Alkylation?

It is the process of combing two dissimilar hydrocarbons. A catalyst is used in this reaction of saturated compounds with unsaturated.

124. What is Polymerization?

Similar to Alkylation, except that in this case two un saturates are combined over a catalyst.

125. What is Hydrogenation or Hydro finishing reaction?

In this reaction hydrogen combines with unsaturated hydrocarbon make them a saturated compound over a catalyst.

126. What is Hydro De-sulfurization?

A reaction over a catalyst to remove sulfur by converting it to H2S with addition of hydrogen.

127. What is the reaction involved in decoking of furnace & regeneration of catalyst?

It is Oxidation. Using oxygen from the air the coke is burnt to CO2.

128. What is temperature? What is freezing point? What is the freezing point of kerosene?

It is a measure of how hot something is.

The temperature at which crystals first appear when a liquid is cooled under specified conditions.

Kerosene freezing point -47oC.

129. What is Dew point?

The temp at which condensation of water vapor from the air begin the temp of the air water vapor mixture falls.

130. What is Dry bulb temperature? What is Wet bulb temperature?

It is an indication of the sensible heat content of air water vapor mixtures

It is measure of total heat content or enthalpy. It is the temperature approached by the dry bulb and the dew point as saturation occurs.

Thanks for reading - Technical Interview Questions - 12
Naitik Patel
Industrial Guide

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