What is the composition of gun-powder ?
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When kerosene oil is burnt, lamp black is produced it is a
from of carbon.
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Which substance has the highest specific heat ?
What is the monomer of polyethene?
What are the soldiers in an army, while crossing a bridge ordered to go out of step?
Why is ammonia added? Why is that same amount of ammonia added?
Arrange by acidic values : phenol, nitrotolouene and o-cresol?
What is the chief commercial use of Phosphorus ?
What is Basicity of an acid ?
What is Acidity of a base ?
Why is glass electrode called an ion selective electrode?
Why is salt thrown on the frozen road ?
Which gas is used, in laboratories etc. for burners ?
Which expands to the greatest, when heated : silids, liquids or gases ?