Which wavelengths are visible to human eye?
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What is molality?
What causes smoke to curl up into the air ?
What is an alloy ?
What is photoelectric colorimeter?
What is specific conductivity?
Mention a few advantages of photoelectric colorimetric determination.
which gas is used in preaparation of bit salt
Explain the Physical change?
Why is sometimes a succession of echoes heard ?
What happens when the excess of stannous chloride is not removed
What is phase transfer catalyst?
Why we use potassium dichromate in control of absorbance in uv region and copper sulphate in control of absorbance in visible region?