AP EAPCET 19-Aug-2021 Shift 1 Paper

Section: Chemistry

Question : 145 of 160

Marks: +1, -0

In Lassaigne's test for halogens, it is necessary to remove X and Y from the sodium fusion extract, if nitrogen and Sulphur are present. This is done by boiling the extract with Z.
Identify X, Y and Z.

X=NaNO3,Y=Na2SO4,Z =conc.HNO3
X=Na‌NH2,Y=Na‌SH,Z= conc. HCl
X=Na2NO2,Y=Na‌SO3‌H,Z= conc. H2SO4
X=NaCN,Y=Na2S,Z =conc.HNO3

Validate

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