Why is acetone used for cleaning viscometer?
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What is the reaction that occurring between fas and potassium dichromate?
How can the iron sheets be prevented from rusting ?
Why is clinical thermometer used in preference to and ordinary Fahrenheit thermometer ?
What is an indicator electrode?
What s the difference between hard and soft coal ?
What is a potentiometer titration?
Explain the Valency?
Why and how is short-circuit caused ?
Why is dew formed more readily on clear nights than on cloudy ones ?
Why mud houses are cooler in summer and warmer in winter ?
Why does a pond of clear water appear less deep than it really is?
Why we use potassium dichromate in control of absorbance in uv region and copper sulphate in control of absorbance in visible region?