What happens when :
(a)`K_(2)Cr_(2)O_(7)`
(b)Silent electric discharge is passed through pure and dry `O_(2)`
(c )Ozone reacts with dry iodine
(d)`2`-Ethyl anthraquinol undergoes air oxidation
(e)`H_(2)S` and `SO_(2)` react in presence of moisture
(f)Burning magnesium is kept in the atmosphere of `SO_(2)`
(g)Acidified iodates react with `SO_(2)`
(h)Conc. `H_(2)SO_(4)` is made to react with phosphorus pentaoxide

Answer

(a)`4K_(2)Cr_(2)O_(7)overset(Delta)to4K_(2)CrO_(4)+2Cr_(2)O_(3)+3O_(2)` , (b)`3O_(2) underset("electric discharge")overset("silent")2O_(3)`
`(##RES_INO_CHM_XII_V02_C02_E01_137_A01##)`
, (e)`2H_(2)S+SO_(2)overset("moisture")to 2H_(2)O + 3S` , (f)`3Mg+SO_(2)to 2MgO+ MgS`
(g)`2KIO_(3)+5SO_(2) + 4H_(2)O to K_(2)SO_(4) + 4H_(2)SO_(4) +I_(2)` , (h)`H_(2)SO_(4)+P_(2)O_(5) to 2HPO_(3)+SO_(3)`