Answer Posted / arul

old coloumn inside some particles may be formed, new coloumn no particles that is reason

mahagenco syllabus for the post of chemist

6426

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We use hicrome 10 cxs column in hplc analysis....pls tell me.. what is the meaning of 10 cxs?

1673

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using gradient pressure in gas chromatography are not ?using gradient pressure why

3333

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what is lod and loq ?,why use k2cr2o7 , kcl h2so4 in uv calibration ?,why use benzophenone & caffene acetone in hplc calibration ?,what is leading peak in hplc ?why we do the calibration of limit of stry light in hplc & uv ?

3620

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2. Two grams of Benzoic acid are dissolved in 200 ml of water and extracted with 200 ml of diethyl ether. The distribution coefficient of benzoic acid is 100, and its dissociation constant is 6.5 10-5. Calculate the distribution ratio (D) of benzoic acid at pH 2, 5, and 6. 3. Calculate D at pH 2 to 10 (1 unit apart) in the above problem, and plot D versus pH.

2170

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For limit test of heavy metals in BP, Method C require that the substance is ignited at a temperature not exceeding 800 °C. Why confines such the temperature?

4003

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on saturation solubility study data how we can find out the bcs class of drug?

827

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From where require to take the RLD sample?

706

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How to determine the EDTA content by potentiometry titration in Ceftriaxine sodium

2486

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in which situation require to take incident in validation?

1651

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What is the formula for relative diffrence for standard solution in solution stability in validation?

738

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is it nessesary to do solution stability for 7 days?

719

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Why acetonitrile and water are used as extraction solvent when analysis melamine? I thought they are miscible and won't be able to separate...

1633

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In performance Check of GC Why Hexadecane Peak is Considered 

2987

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Home heating oil or furnace oil what is made from? Can (base oil plus diesel/kerosen) = home heating oil?

2132

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