What is the bluish white precipitate formed after adding ammonia solution?
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What is given off on burning a candle ?
Of what substance are lead pencils made ?
Distinguish between lime water and milk of lime ?
Why does a rose appear black when the light of any other colour except red is made to fall on it ?
Why is it dangerous to have a coal fire burning with doors and windows closed ?
What is kentchin?
Why does water boil above 100 o C in mines ?
What is Poling ?
Why is disodium salt of edta preferred to edta?
Why is estimation of copper done at 620 nm wave length?
4.0 liters of oxygen are mixed with 8.0 liters of nitrogen. Identify the solute and solvent in this mixture:
Which element is liquid at ordinary temperature ?