What is the min constitutes of haematite ore?
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What is the role of mercuric sulphate?
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?
what are the role of chemistry education in sustainable development
What is the application of hardness date in environmental engineering practice?
What is Electrovalence?
Explain the following ? Matter, Element, Atom, Compound, Molecule, Mixture, Physical change, Chemical change
Define Vulcanization?
What is ignition point ?
What is weak acid?
Why does a diamond cut glass?
What is General Properties of Acids ?
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What is the basicity/acidity of na2co3