who invented the first projector?
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What is the octane number range of te petrol used in India ? 1)90-95 2)90-99 3)80-90
How is cement manufactured ?
What is density of a liquid?
What is Potential Impurities?
Explain the Chemical Manures ?
Which substance has the highest specific heat ?
In the calculation of calorific value of any fuel why the latent heat of vap. of water is taken as 587 kj/mol whereas actually it is 540kj/mol?
how to do heavy metal test for colour sample?
Explain the difference between the Metals and Metallurgy ?
Why a hot day in Calcutta causes more discomfort than are equally hot day in Delhi ?
Explain about Oxide ?
What is water gas ?