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31. 0.89 of impure (NH.), SO, was boiled with 100ml of a 0.2N NaOH solution till all the NH (8) evolved. The remaining solution was diluted to 250ml. 25ml of this solution was neutralized using 5ml of 0.2N H,SO. solution. The percentage purity of the (NH4), SO, sample is 41025 (A) 82.5 (B) 72.5 (C) 62.5 (D) 17.5 27 decapontide (M-796) on complete hydrolysis gives alycine (M = 75), alanine and Phenylalanine. Glycine

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