JEE Advanced 2020 Full Test 3 Paper 1

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Question : 21 of 54

Marks: +1, -0

Which of the following pairs produce same gas?

(Ca3N2+ dil. HCl) and (NH4NO2 on heating)
[(NH4)2Cr2O7 on heating] and (NH4NO2 on heating)
(NH4NO3 on heating) and [Hg(NO3)2 on heating]
(NH4Cl on heating ) and [NaNO3+Zn+NaOH‌(aq. ‌) on heating]

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