What is the purpose of adding urea?
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What is the unit of ph?
Why does milk turn sour ?
Acid value defination is numbber milligrams of KOH required to nuetralise the acid present in one gram oil & fats but why not use NaOH for nuetralisation?
Why does a freely supended magnetic needle always point North and South ?
What is wave length?
why in atomic mass electron is not include while proton and neutron include? although electron is a part of atom.
Which is the indicator used in the determination of cao I cement solution?
Give the others form of iron ore.
Which gas is used, in laboratories etc. for burners ?
Define Atom ?
What is flash point ?
What is wave number?