Q. Multi-stage counter-current extraction is expensive as more extractors are needed to strip the solid off the solvent.

View solution

Q. Statement 1: Multi-stage cross-current extraction – the solids contain some amount of solute after every extraction.
Statement 2: Single-stage batch extractor – Used in labs and not on large scale as a solvent is continuously subjected to heat.

View solution

Q. _____ is the diagonal of the x-y diagram.

View solution

Q. Statement 1: In counter-current extraction, equilibrium is reached at every stage.
Statement 2: Right angled triangle method also called a difference point method is used to calculate the ideal number of stages for extraction.

View solution

Q. Which of the following operations is carried out by extraction equipment?

View solution

Q. A multi stage continuous counter-current extractor has the advantages of both co and counter current processes.

View solution

Q. After extraction via solvent extraction, the cake serves to be a good source of _____

View solution

Q. _____ is an important solvent for wet and edible materials.

View solution

Q. What is extraction in paprika used for?

View solution

Q. Statement 1: Caffeine is the active principle in coffee. It cannot be stripped off it.
Statement 2: Caffeine can be stripped off coffee by extraction.

View solution

Q. Using hot water for decoction followed by spraying drying is the procedure used for making instant coffee.

View solution

Q. Statement 1: Presence of certain organic solvents in solvent extraction can prove to be carcinogenic.
Statement 2: CO₂ gas can be used in super critical fluid extraction.

View solution

Q. Which of the following is a major constraint of SCFE?

View solution

Q. Which of the following is the real extraction application of SCFE?

View solution

Q. Which of the following is the actual reason why CO₂ is used in CSFE?

View solution

Q. Celinium Sulphate is an exception of the solubility curve. When the temperature is increased, its solubility decreases.

View solution

Q. Which of the following is NOT an important criteria for crystal formation?

View solution

Q. Statement 1: The solubility of NaCl increases with the increase in temperature.
Statement 2: Crystal formation is hindered by nucleation taking place on the crystal surface.

View solution

Q. Statement 1: Solid food items containing water molecules are more soluble as the temperature increases.
Statement 2: This growth takes place in steps.

View solution

Q. Which of the following tells the significance of crystallization in food processing?

View solution