How is petroleum manufactured?
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When a glass rod is heated gradually and suddenly dipped in cold water, it cracks. What is the reason?? When a cool glass rod is suddenly heated, it cracks. Why?
Why we use potassium dichromate in control of absorbance in uv region and copper sulphate in control of absorbance in visible region?
How is cement manufactured ?
Which is the indicator used in the determination of cao I cement solution?
why all the concentration of chemical species are measured using water as solvent (for examole 1N NaOH means 40 g of NaOH in one litre of water)eventhough there are so many solvents available?
Explain the Purification of Organic Compounds ?
What is the difference between fractionation and distillation?
What is kentchin? Is it real?
What is buffer?
however ozone is havier than oxygen still ozone is up there in sky why?
What is the effect of the flashes of lightning during a thunderstorm ?
Is air mixture or compound ?