In estimation of halide from sodium fusion extract which compound is used before adding AgNO3?
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Indium is refined by which of the following methods? (1) Van-Arkel (2) Zone-refining (3) Distillation (4) Liquation
Which of the following cannot form CO on reaction with H2O? (1) CH4 (2) C3H8 (3) CO2 (4) C
What is composition of German silver? (1) Cu Zn Ni (2) Ag Ni Cu (3) Zn Ni Ag (4) Ag Au Zn