Refer the diagram and answer the following questions pertaining to laboratory preparation of hydrogen [6] (i) State what is added through the thistle funnel ‘Y’. (ii) Name a solution which absorbs the impurity NO2. (iii) Write a chemical equation for the above preparation. (iv) Why nitric acid is not used in the preparation? (v) Why the lower end of the thistle funnel should dip below the level of the acid in the flask. (vi) Name a method used to collect hydrogen
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(ii) Silver nitrate solution
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