What is the composition of ferroin?
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why in atomic mass electron is not include while proton and neutron include? although electron is a part of atom.
Why are some wires covered with insulating materials ?
Explain the Physical change?
What is the role of stannous chloride?
What is kentchin? Is it real? As much info on it as possible.
Explain the structure of a dna molecule?
When a glass rod is heated gradually and suddenly dipped in cold water, it cracks. What is the reason?? When a cool glass rod is suddenly heated, it cracks. Why?
which gas is used in preaparation of bit salt
Why dies thermos flask keep a hot liquid hot and a cold liquid cold ?
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What is Catalysis ?
What is Valency ?
Which gas is used in bulbus ?