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2021 JEE PYQ

Get chapter-wise JEE Main & Advanced questions with solutions

Q JEE-MAIN 2021
Number of paramagnetic oxides among the following given oxides is __________.
$\mathrm{Li}_2 \mathrm{O}, \mathrm{CaO}, \mathrm{Na}_2 \mathrm{O}_2, \mathrm{KO}_2, \mathrm{MgO}$ and $\mathrm{K}_2 \mathrm{O}$
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Q JEE MAIN 2021
Number of paramagnetic oxides among the following given oxides is $\_\_\_\_$ $\mathrm{Li}_2 \mathrm{O}, \quad \mathrm{CaO}, \quad \mathrm{Na}_2 \mathrm{O}_2, \quad \mathrm{KO}_2$, MgO and $\mathrm{K}_2 \mathrm{O}$
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Q JEE MAIN 2021
In the following sequence of reactions, the final product D is :
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Q JEE-MAIN 2021
The oxide without nitrogen-nitrogen bond is :
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Q JEE-MAIN 2021
The potassium ferrocyanide solution gives a Prussian blue colour, when added to :
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Q JEE-MAIN 2021
Which one of the following gives the most stable Diazonium salt
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Q JEE MAIN 2021
The potassium ferrocyanide solution gives a Prussian blue colour, when added to
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Q JEE-MAIN 2021
Given below are two statements :
Statement I : The nucleophilic addition of sodium hydrogen sulphite to an aldehyde or a ketone involves proton transfer...
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Q JEE-MAIN 2021
The compounds B and C respectively are :
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Q JEE-MAIN 2021
Hydrogen peroxide reacts with iodine in basic medium to give :
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