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IIT JEE Advanced 2008 Paper 1

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Question : 31

Total: 69

A solution of colourless salt H on boiling with excess NaOH produces a non-flammable gas. The gas evolution ceases after sometime. Upon addition of Zn dust to the same solution, the gas evolution restarts. The colourless salt(s) H is(are)

NH4NO3
NH4NO2
NH4Cl
(NH4)2SO4

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