MCQ
In thiosulphuric acid
- Aeach sulphar atom is in identical oxidation state
- ✓there is a $S = S$ linkage present
- Cone $S$ atom is in $+2$ and other sulpher atom is in $+4$ oxidation state
- Dthere is only one replaceabe hydrogen atom

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| Test | Interference |
| $(a)$ $2, 4-DNP$ test | Colorued precipitate |
| $(b)$ Iodoform test | Yellow precipitate |
| $(c)$ Azo-dye test | No dye formation |
Compound $‘X’$ is