What is mole?
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Explain the Purification of Organic Compounds ?
what is the detector used in ir spectroscopy
In winter, on a cold morning, the cement feels colder to the foot than a carpet. Why ?
what is the valence of nitrogen?
Which is heavier, water or ice ?
How is the viscosity of liquid related to its mobility?
What are the electrodes used in the measurement of ph for the determination of pka?
which acid present in soda water?
Explain the Hard and Soft water ?
What are constituents of brass?
Why is disodium salt of edta preferred to edta?
Which gas is used in hospitals for the artificial respiration ?