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BooksPhysics Teaser

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A chain having 125 links is 125 cm long. Its mass is 2 kg. Its two ends are connected together and the chain is rotated with a frequency 50 rev/sec. then centripetal force on each link will be
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LogicalChemistry Teaser

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Bidentate ligand are
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Oxalate
Ethylenediamine
Carbonate
Diethylene triamine

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Notice BoardMathematics Teaser

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tan-1x + tan-1y = π/4, then
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x + y + xy = 1
x + y - xy = 1
x + y + xy + 1 = 0
x + y - xy + 1 = 0