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If 4 g of methane is to be completely burnt, the amount of oxygen needed is

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If 4 g of methane is to be completely burnt, the amount of oxygen needed is

(a) 4 g

(b) 8 g

(c) 16 g

(d) 32 g

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Correct option is (c) 16 g

CH4 + 2O2 → CO2 + 2H2O

Weight of O2 required = \(\frac{2 \times 32 \times 4}{16}\) = 16 g

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