Which of the following group is NOT Dobereiner Triads?
The upper part of the heterosphere is composed almost completely of which gas?
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Uraninite is an ore/mineral of _______.
Atomic number of which of the following elements is greater than that of Chlorine
What is the chemical formula of aluminium nitride?
Haematite is an ore/mineral of
The reactions in which oxidation and reduction occur simultaneously are called _______.
Activated Charcoal is used to remove colouring matter from pure substances by_______
Which of the following is not soluble in water?
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