INTERVIEW BASED QUETIONS (PART-01)

INTERVIEW BASED QUETIONS (PART-01)

 1. Define: Unit operation.

→ Useful Physical changes occur in the chemical industry is known as a Unit Operation. Example: Distillation, Filtration, Drying, Extraction, Gas absorption, Crystallization, etc. 

2. Define: Unit process.

 → Useful Chemical changes with or without physical change occur in chemical industry are known as a Unit Process. Example: - Oxidation, Reduction, Alkylation, Sulfonation, Chlorination, etc. . 

3. Define: Boiling Point and Bubble Point. 

→ Boiling Point: -It is a temperature of a liquid at which the vapour pressure of the liquid is equal to atmospheric pressure. Bubble Point: -It is a temperature at which first bubble of vapour is formed.

 4. When does liquid boil? 

→ When the vapour pressure of the liquid is equal to atmospheric pressure at that time liquid is boil. 

5. Define: - Volatile Liquid.

→  It is a tendency of a liquid to vaporize. 

6. Acetone and water out of this which is more volatile and why?

→ Acetone is more volatile than water because of boiling point of acetone (56.7 °C) is low compa re to boiling point of water (100° C)

 7. What is the Relative Volatility?

→  It is a ratio of concentration of more volatile component in vapour phase to liquid phase is called Relative Volatility 

8. What is important of Relative Volatility?

→  For separation of liquid mixture using distillation, Relative volatility should be more than 1. 

9. Why is Reflux done in distillation column? and Define Reflux Ratio.

→  For Increasing product purity. Reflux: -It is amount of distillate which is resend to distillation column is known as a reflux. Reflux Ratio: -Reflux ratio is the ratio of the portion of the overhead liquid product from a distillation column that is returned to the upper part of column to the portion of liquid collected as distillate.

10. What is effect of reflux ratio on the no. of plate required in distillation column?

→  At high reflux ratio no. of plate required less (Small column height) and at low reflux ratio no. of plate required more (Large column height). 

CLICK HERE FOR PART-02

JOIN OUR TELEGRAM GROUP FOR DAILY UPDATES(CLICK TO JOIN)