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What is the purest form of water ?
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How does the viscosity vary with temperature?
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.
Mention a few application of cod test in environmental engineering practice.
why the pH scale range is 0-14?
1 Answers Clariant, MIU, Torrent Pharma,
Why are substances like caustic soda and calcium chloride called hygroscopic substances ?
why PH scale range is 14? why it is not less or not greater than 14? solution of HCl or hydrogen containing liquid has a PH. but if the solution is KMnO4 here not hydrogen power does it PH? explain plz....
Define what is avogadro’s law?
Acid value defination is numbber milligrams of KOH required to nuetralise the acid present in one gram oil & fats but why not use NaOH for nuetralisation?
Why does the water in tanks and ponds not freeze in winter ?
Which of the above conductivity measured during conductometric titration?
Why graphite rod is used in nuclear reactor?
Explain the Valency?
Organic Chemistry 
