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Chemistry
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Non Metals and Their Compounds
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Non Metals and Their Compounds
Easy Questions
Moderate Questions
Chemistry
Nature and Composition of Substances
Atomic Structure
Radioactivity
Periodic classification of element
Chemistry in Every Day Life
Biomolecules
Hydrocarbons and Its Derivatives
Non Metals and Their Compounds
Metals and Their Compounds
Surface Chemistry
Electrolytes & Electrochemistry
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Thermodynamics and Energetics
Catalysis
Properties of Gases
Acids, Bases and Salt
Oxidation and Reduction
Chemical Bonding
Chemistry miscellaneous
Sapphire is a mineral of
Cu
Ca
Fe
Al
Correct Option:
D
NA
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