Differentiate between modern periodic table and mendeleevs table?
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What important property of water makes it possible for plants to grow under it and for animals to live it ?
Mention the different types of conductivities.
Explain the following ? Matter, Element, Atom, Compound, Molecule, Mixture, Physical change, Chemical change
What is the composition of air ?
Why is the indicator eriochrome black(ebt) shows wine red color at the beginning and blue color at the end?
What is the function of diethyl amine?
explain sour gas?
Explain the classification of oxides ?
Why does the filament of an electric lamp glow, when current passes through it ?
Explain the Chemical change?
What makes a molecule into organic molecule?
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.