What is the difference between fractionation and distillation?
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What is weak acid?
What is buffer?
Explain the Element?
describe the lewis dot structure of Mg2+?
Why are substances like caustic soda and calcium chloride called hygroscopic substances ?
How is temporary hardness be removed?
What test will you use to distinguish cotton from wool ?
Explain the Avogadro?s law
What is the prime constituents of cement?
Why is a vessel of water heats more quickly, when heat is applied at the bottom than it is heated at the top?
Explain the Matter?
How is electricity generated from water ?