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Why we use potassium dichromate in control of absorbance in uv region and copper sulphate in control of absorbance in visible region?
Explain the structure of a dna molecule?
Explain extraction of ephedrine from a mineral block?
What is colorimetry?
Fresh form of water is obtained from?
What are the constituents of cements?
What is an indicator electrode?
Why is eriochrome black t indicator cannot be used in this experiment?
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?
State beer-lambert’s law.
In the calculation of calorific value of any fuel why the latent heat of vap. of water is taken as 587 kj/mol whereas actually it is 540kj/mol?
What is the min constitutes of haematite ore?
What is a potentiometer titration?
What is mole?
Arrange by acidic values : phenol, nitrotolouene and o-cresol?
