Answer Posted / nisha (college student)

primary std thats stdrd solution can be prepare but secondry thats stdnrd solution can not be prepared

eg. acetic acid is primary std but sulfuric acid is secondry

Why perchloric acid used for potentiometric titration

2735

---

WHICH STANDARD WE USE IN SILICA ANALYSIS IN SILICA-GEL METHOD FOR SOLID SAMPLE

2186

---

A ha tc is actual defination of retention time?

1662

---

What should be the level/ Percentage of Arsenic in Arsenic free zinc.

2276

---

if your impurity coeluting with each other in that situation how require to set specification? is it acceptable?

1045

---

what is the acceptance criteria for enteric coated tablets in 0.1n hcl validation in each parameter?

943

---

function of detecter in hplc ,gc and spectroscopy? function of carrier gas in gc?

2721

---

WHAT IS THE PARAMETER FOR THE SELECTION OF MOBILE PHASE IN HPLC?

1250

---

How we choose the mobile phase for method development.?

1270

---

how require to interprit the method precision data of hptlc?

870

---

calibrtion procedue of LC-MS

2760

---

What are modes of quantification in related substances

2213

---

we can use expired sample for validation and analyst qualification?

862

---

what is mean by 40 in the dissolution basket mesh size?

839

---

what is different when impergnated silica plates are used in separation of azo dyes using column chromatography?

2078

---