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The oxygen needed for complete combustio...

The oxygen needed for complete combustion of 4 gm `CH_(4)` may be obtained from decomposition of :

A

`(4)/(3)` moles of `KCIO_(3)` with 25% yield `(KCIO_(3) rarr KCI+(3)/(2)O_(2))`

B

50 ml, 10 m`H_(2)O_(2)` solution `(H_(2)O_(2)rarr H_(2)O+(1)/(2)O_(2))`

C

500 gm solution containing 17% (w/w) `NaNo_(3)` `(NaNo_(3)rarr NaNO_(2)+(1)/(2))`

D

410 gm impure sample of `Ca(NO_(3))_(2)` of 40% purity `(Ca(NO_(3))_(2) rarr CaO + 2NO_(2) +(1)/(2)O_(2))`

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The correct Answer is:
A, C, D
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