Explain extraction of ephedrine from a mineral block?
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What is Salts ?
What is Atomic weight?
How is brass solution prepared?
Which gas is used in bleaching powder.
A dynamite catridge struck in a rock makes the rock burst in being fired. How dies it happen ?
What are the uses of glacial acetic acid?
What is phase transfer catalyst?
Explain the Molecule?
While standing on railway platform and heating the whistle of an engine coming towards us , we hear the sound increasing; bit when the engine is receding from us it appears to fall why ?
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 ?
which acid present in soda water?
Explain the Matter?