Interview Questions Answers in Pharmacy, Analytical Chemistry

rambabu yavarna

{ City } hyderabad
< Country > india
* Profession * scientific officer
User No # 104495

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Total Answers Posted # 4

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Question { 7626 }

what do you mean by end capping

Answer

A column is said to be endcapped when a small silylating
agent (e.g., trimethylchlorosilane) is used to bond residual
silanol groups on a packing surface.

Is This Answer Correct ?

7 Yes

3 No

Question { DRL, 13474 }

Why using 0.5% acetone in methanol mobile phase for HPLC
Gradient performance check.

Answer

Acetone wavelength maxima is 260nm and it is freely soluble in water or methanol

Is This Answer Correct ?

6 Yes

1 No

Question { Enaltec Labs, 22242 }

What is the difference between kf and LOD

Answer

As per LOD at higher temperature we identify the total volatile substances including water. LOD at lower temperature (60°C to 70°C)under vacuum we can't identify the water, then we will fined water through K.F reagent

Is This Answer Correct ?

6 Yes

3 No

Question { Hetero, 20449 }

What is chiral and why this performing in HPLC

Answer

Also we know the percentage of ee

Is This Answer Correct ?

1 Yes

4 No