What is the min constitutes of haematite ore?
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Why is a halo formed round the moon, when the sky is clear ?
What is Acidity of a base ?
Explain the Mixture?
Why is it more efficient for a labourer to raise bricks up to a brick layer by the use of a rope and pully than by carrying them up a ladder ?
what is the process for separating the components of gunpowder?
What is si unit of viscosity-coefficient?
Why are wires used to carry electricity ?
What is determining factor in the oxidation reduction reaction?
What is importance of principles of solubility product ?
Why ate shadows longer at the end of the day ?
What is Bases ?
What is Refractory Materials?