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Which one of the following has the smallest heat of hydrogenation per mole?
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Let `a_1 , a_2 , a_3 cdots cdots` be in harmonic progression with `a_1=5` and `a_20=25`. The least p
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If the series limit frequency of the Lyman series is `v_L`, then the series limit frequency of the P
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` \lim_{x\rightarrow 0} \ frac {(1 - \cos 2x)^{2}}{2x\ \tan x - x\ \tan 2x}` is:
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The lines `2x + 3y + 19 = 0` and `9x + 6y - 17 = 0` intersects the coordinate axes in concyclic poin
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When metal `'M'` is treated with `NaOH,` a white gelatinous precipitate `'X'` is obtained, which is
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