What is chemical oxygen demand?
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Explain the ANS Isotope?
What is the effect of the flashes of lightning during a thunderstorm ?
How is cement manufactured ?
Mention a few important criteria for satisfactory colorimetric analysis.
What is the reaction that occurs between iodine and sodium thiosulphate?
Which gas is used in bleaching powder.
Explain the difference between the Metals and Metallurgy ?
What is Evaporation ?
Explain the Hydrogen and its Compounds ?
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.
Which is heavier, water or ice ?
Explain the process of spontaneous combustion?