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Chemistry Test ...

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    For the estimation of nitrogen, 1.4 g of organic compound was digested by Kjeldahl method and the evolved ammonia was absorbed in 60 mL of M/10 sulphuric acid. The unreacted acid required 20 ml of M/10 sodium hydroxide for complete neutralization. The percentage of nitrogen in the compound is:

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    The ratio of masses of oxygen and nitrogen in a particular gaseous mixture is 1 : 4. The ratio of number of their molecule is:

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    The reactivity of compound Z with different halogens under appropriate conditions is given above : The observed pattern of electrophilic substitution can be explained by

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    A compound H2 X with molar weight of 80g is dissolved in a solvent having density of 0.4 gml^–1. Assuming no change in volume upon dissolution, the molality of a 3.2 molar solution is

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    9.65 C of electric current is passed through fused anhydrous magnesium chloride. The magnesium metal thus obtained is completely converted into a Grignard reagent. The number of moles of the Grignard reagent obtained is ______.

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