JEE Main 2022 · 26 Jun · Shift 2 · Chemistry Q90

ChemistryInteger+4 / -1Question 90 of 90

The moles of methane required to produce 81 g of water after complete combustion is ______ $\times10^{-2}$ mol. [nearest integer]

Your answer

Answer and worked solution

Official answer: 225

Water. $\frac{81}{18}=4.5$ mol; each $\mathrm{CH_4}$ gives 2 $\mathrm{H_2O}$ .

Methane $2.25$ mol $=225\times10^{-2}$ .

Answer: 225

JEE Main 2022 · 26 Jun · Shift 2, Chemistry question 90