JEE Main 2021 Question Paper (18-Mar-2021) (Shift 1)

Question 1

Considering the above reaction, $\mathrm{X}$ and $\mathrm{Y}$ respectively are:

Accepted Answer

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Answer

Answer

Answer

Question 2

The ionic radius of $\mathrm{Na}^{+}$ ions is $1.02\,	ext{\AA}$. The ionic radii (in $	ext{\AA}$) of $\mathrm{Mg}^{2+}$ and $\mathrm{Al}^{3+}$, respectively, are

Accepted Answer

$0.72$ and $0.54$

Answer

$1.05$ and $0.99$

Answer

$0.85$ and $0.99$

Answer

$0.68$ and $0.72$

Question 3

Reaction of Grignard reagent, $\mathrm{C}_2\mathrm{H}_5\mathrm{MgBr}$ with $\mathrm{C}_8\mathrm{H}_8\mathrm{O}$ followed by hydrolysis gives compound $\mathrm{A}$, which reacts instantly with Lucas reagent to give compound $\mathrm{B}\left(\mathrm{C}_{10}\mathrm{H}_{13}\mathrm{Cl}\right).$
The compound $\mathrm{B}$ is: