Arrange by acidic values : phenol, nitrotolouene and o-cresol?
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Explain the Chemical change?
Define Atom ?
A dynamite catridge struck in a rock makes the rock burst in being fired. How dies it happen ?
Acid rain is caused due to pollution of atmosphere by
What is the composition of gun-powder ?
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 ?
What is the effect of the flashes of lightning during a thunderstorm ?
Why is clinical thermometer used in preference to and ordinary Fahrenheit thermometer ?
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 buffer?
What is wave length?
What are the electrodes used in the measurement of ph for the determination of pka?