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Solution


Q.

In Dumas method for the estimation of N2, the sample is heated with copper oxide and the gas evolved is passed over:          [2023]
1 Copper gauze  
2 Pd  
3 Ni  
4 Copper oxide  

Ans.

(1)

In Dumas method for the estimation of N2, the sample is heated with copper oxide and the gas evolved is passed over copper gauze to reduce traces of nitrogen oxides into nitrogen gas.