What is photoelectric colorimeter?
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Explain the difference between the Metals and Metallurgy ?
What is the difference between caustic soda and washing soda ?
What are filters? Why are they used?
when we covert any substance into vapour state from solid state, is it ionized or not?
What is the function of diethyl amine?
Explain the Element?
Is water element or compound ?
Explain the structure of a dna molecule?
which of the following is the best conductor of electricity?
What happens when the excess of stannous chloride is not removed
Explain the process of spontaneous combustion?
What is the effect of the flashes of lightning during a thunderstorm ?