किस क्रिया से ऑक्सीजन गैस प्राप्त होती है ?
(i) `KMnO_(4)+2KF+H_(2)O_(2)overset(50%)underset(HF)rarr`
(ii) `F_(2)+2NaOH rarr`
(iii) `XeF_(2)+2H_(2)O rarr`
(iv) `Hg_(2)CrO_(4)overset(Delta)rarr`

Options

A. (i), (ii), (iii)
B. (i), (iii), (iv)
C. (ii), (iii), (iv)
D. (i), (ii), (iv)

Answer

C

Explanation

(i), (ii) व (iii) `O_(2)(g)` देते है |
(i) `2KMnO_(4)+2H_(2)O_(2)+2KF overset(HF)underset(50%)rarr 2KMnO_(2)+3O_(2)+2H_(2)+2KOH+F_(2)`
(ii) `2F_(2)+4NaOH rarr 4NaF+O_(2)(g)+2H_(2)O`
(iii) `2XeF_(2)+2H_(2)O rarr 2Xe+4HF+O_(2)(g)`