Question { Reddy Labs, 37676 }

How will you convert a 6 Normal solution to 8 Normal
solution?

Answer

If it is 1N of solid check the weight. Assume x grams in 1000 ml. For converting to 3N add remaining weight of solid material. Dissolve thoroughly.
Ex: 1N sodium hydroxide is 40 grams in 1000 ml. If asked three normal, add another 80 grams so that total would be 40 * 3 to get 3N . Similarly from 6 to 8

Question { Mylan, 11922 }

One Raw material failed assay test is there any chance for
failing purity of that material ?

Answer

For this question the answer is here. Assay is amount of analyte present in the given sample. If assay fails does not mean that it is impure. A sample with 90% w/w assay will still have 100% purity. Purity defines the impurities in it. The possibility to check would be if any weighing error otherwise perform Related substances test to check the number of impurities.
Then we can get clarity. In simple basis assay and purity are correlated. But if assay is less does not mean it is impure.

Question { Lupin, 10261 }

in performing of disintigration test in wich condition we use
the disc&in wich condition we nt use the disk clarify wit
reasn?

Answer

As per USP, it is said that disks reduce the disintegration time. hence if we are formulating a faster release drug, then disks are used.

For example: oral dispersible tablets are evaluated using disks.

Question { Alembic, 7779 }

What diffrence between reviewed by and Checked By

Answer

Reviewing is done by Quality Assurance Head
Checking is done by In department concerning the Document