Why will a solution of aspirin without acid or basic hydrolysis give yellow colour with a solution of Ferric chloride?

1 Answers  

---

How do you increase the number of theoretical plates?

1 Answers   Cipla,

---

what is the meaning of stress study?

2 Answers   Reddy Labs,

---

if v use HELIUM & ARGON instead of NITROGEN as a mobile phase what happen in GC SYSTEM ?

5 Answers   Cipla, Reddy Labs,

---

difference between quality and quantity

3 Answers  

---

In C8,C18....etc have 4&5 etc... microns Columns is there like that how to separate Chiral columns as per Micron size?

1 Answers  

---

Is it compulsory to prepare KBr disc with sample in identification test by FTIR?

2 Answers  

---

wt is rsd in and explain

4 Answers   Cadila, Reddy Labs,

---

In pharmaceuticals formulation OOS applicable in Raw Material(which is not manufacturing in the company. and purchase by approved vendor)).Why?

1 Answers   Orchid,

---

we calibrate HPLC once in 6 months while iam doing calibration i came to know that calibration was failed. then how can i justify that the samples analyzed on the system during this 6 months was wright? how can i forward in to the next step for those batches?

5 Answers  

---

How you can calculate pKa ?

6 Answers   Dr Reddys,

---

how to prepare 25 ppm acetone. explian with formula

4 Answers  

---