Indicate the correct statement(s) from below :

1.	Indicate the correct statement(s) from below :
Answer» `K_(2)S_(2)O_(6)` , when heated with `K_(2)CrO_(4)` and conc. `H_(2)SO_(4)` and in the presence of diethyl ether GIVES a blue colouration. Presence of iodine in a sample of table salt can be tested by adding a few drops of `H_(2)SO_(4)` ona given amount of table salt FOLLOWED by addition of a few drops of `H_(2)SO_(4)` into the resulting mixture `H_(2)O_(2)` needs to be mixed with `FeSO_(4)` to exilise henveneto plienol Polyhydroxy compounds like SORBITOL, mannitolets are used in trace amounts to stabilise `H_(2)O_(2)` Solution :(1) `K_(2)S_(2)O_(8)` when heated with`K_(2)CrO_(4) and conc.H_(2)SO_(4)` and in the presence of diethyl ether gives a blue colouration (2) Presence of iodine in a sample of table salt can be tested by adding a few drops of `H_(2)SO_(4)` on a given amount of table salt followed by addition of a few drops of `H_(2)O_(2)` into the resulting mixture (3) `H_(2)O_(2)` needs to be mixed with `FeSO_(4)` to oxidise benzene to PHENOL (4) Poly hydroxy compounds like sorbitol, mannitol ets are used in trace amount to stabilise `H_(2)O_(2)`

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