Consider the following reactions A $\xrightarrow[\text{(ii) } H_3O^+]{\text{(i) } CH_3MgBr}$ B $\xrightarrow[573\text{ K}]{Cu}$ 2-methyl-2-butene The mass percentage of carbon in A is ______.

JEE Main 2020 · ChemistryNumerical answerNumerical valueMediumMulti-step

JEE Main 9 January 2020, Shift 2, Chemistry Q50

Question 50 of 75 in this shift, Chemistry question 25 of 25, Section B.

Consider the following reactions A

\xrightarrow[\text{(ii) } H_3O^+]{\text{(i) } CH_3MgBr}

\xrightarrow[573\text{ K}]{Cu}

2-methyl-2-butene The mass percentage of carbon in A is ______.

Official answer

66.65 to 66.70

NTA final key (Jan 2020). Any value in the range scored.