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2021 JEE PYQ

Get chapter-wise JEE Main & Advanced questions with solutions

Q JEE-MAIN 2021
A coaxial cable consists of an inner wire of radius ‘a’ surrounded by an outer shell of inner and outer radii ‘b’ and ‘c’ respectively....
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Q JEE MAIN 2021
Which one of the following given graphs represents the variation of rate constant (k) with temperature (T) for an endothermic reaction ?
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Q JEE MAIN 2021
At $20^{\circ} \mathrm{C}$, the vapour pressure of benzene is 70 torr and that of methyl benzene is 20 torr. The mole fraction of benzene in...
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Q JEE MAIN 2021
The number of significant figures in 0.00340 is ______ .
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Q JEE MAIN 2021
An average person needs about 10000 kJ energy per day. The amount of glucose (molar mass $=180.0 \mathrm{~g} \mathrm{~mol}^{-1}$ ) needed to meet this energy...
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Q JEE MAIN 2021
For a chemical reaction $\mathrm{A} \rightarrow \mathrm{B}$, it was found that concentration of B is increased by $0.2 \mathrm{~mol} \mathrm{~L}^{-1}$ in 30 min . The...
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Q JEE MAIN 2021
Four identical hollow cylindrical columns of mild steel support a big structure of mass $50 \times 10^3 \mathrm{~kg}$, The inner and outer radii of each...
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Q JEE MAIN 2021
Experimentally reducing a functional group cannot be done by which one of the following reagents ?
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Q JEE MAIN 2021
Consider the above chemical reaction. The total number of stereoisomers possible for Product 'P' is...
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Q JEE MAIN 2021
A coil having N turns is wound tightly in the form of a spiral with inner and outer radii 'a' and 'b' respectively. Find the...
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