MCQ
When sulphur is boiled with $N{a_2}S{O_3}$ solution, the compound formed is
- ASodium sulphide
- BSodium sulphate
- CSodium persulphate
- ✓Sodium thiosulphate
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${C_2}{H_4}O\left( g \right) \to C{H_4}\left( g \right) + CO\left( g \right)$
if the initial pressure of $C_2H_4O(g)$ is $80\ mm$ and the total pressure at the end of $20\ minutes$ is $120\ mm$ ........... $mm$
