We use Potassium Dichromate solution for the calibration of UV-Visible Spectrophotometer in UV region. My question is to calibrate visible region which solution could be used in photometric accuracy

1842

how can I make the copper get white bye any salt or acit?

2153

What is the role of a catalyst? : Polymer Chemistry

961

Describe the role of Protactinium in neutron sources and its significance for research in nuclear physics.

512

What is the diffrence in japan mkt requirement in analytical method validation over US?

682

How do we quantify crystaline and amarpous forms by using (NMR, XRD)spectroscopic techniques? Which any others instruments are useful for this quantification? explain

2343

How many electrons does benzene have?

991

what is turbidimetric titration?Give 2 examples.

2587

there is something which we call as the basicity of an acid i wanted to ask is that is there something like the basicity of an alkali if yes than how can we define it?

2003

How many moles of sodium hydrogen phosphate can be prepared from 3 mol of sodium hydroxide and phosphoric acid?

2343

what is mean by ambient temperature?

874

1.What is the difference between method validation and method verification 2.Which guidelines proposed to method transfer

1803

Does domestic/household used kerosene oil which is available in blue color (In India) can change its color over the due course of time say 8-10 years if keeping in plastic bottle? If so, in which color it will be turned to change, yellow or transparent or any other color. Please provide me the reply with strong technical approach. Since it has been asked during an interview. Please reply fast. I will be thankful to you if anyone can provide the supporting journals/write-ups/reference to favour of response.

1378

what is mean by dissolution hydrodynamics?

780

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

2183