200 Best MCQs on downstream processing- biochemical engineering
Q25). The purity of a solute collected between two times t1 and t2 during chromatographic separation can be calculated as
a).amount of solute eluted – amount of impurity eluted
b).amount of solute eluted / amount of impurity eluted
c).amount of solvent eluted + amount of impurity eluted
d).amount of solvent eluted / amount of impurity eluted
Correct Answer:
amount of solute eluted / amount of impurity eluted
Explaination:
Q26). Chromatography is based on the
a).different rate of movement of the solute in the column
b).separation of one solute from other constituents by being captured on the adsorbent
c).different rate of movement of the solvent in the column
d).any of the above
Correct Answer:
different rate of movement of the solute in the column
Explaination:
Q27). A typical tubular centrifuge has a bowl of 2 to 5 inch in diameter and 9 to 30 inch in height with a maximum rotating speed of
a).15,000 to 50,000 rpm
b).50,000 to 100,000 rpm
c).100,000 to 150,000 rpm
d).150,000 to 200,000 rpm
Correct Answer:
15,000 to 50,000 rpm
Explaination: