What is a potentiometer titration?
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What is the role of mercuric sulphate?
How is petroleum manufactured?
Why does a rose appear black when the light of any other colour except red is made to fall on it ?
Why has every parachute a hole in the centre ?
On the cold morning, a gardener touches the iron blade of his spade with one hand and its wooden handle with other hand. Why does he feel the iron blade to be colder than the wooden handle ?
What is weak acid?
explain sour gas?
which of the following is the best conductor of electricity?
A balloon constructed in Calcutta during July-August was found to show cracks at most wooden joints when received at Ferozepore in December. What is the probable cause ?
How is the measurement of ph made?
Explain the Fuel gases ?
What is the difference between fractionation and distillation?