2023 JEE PYQ

Q JEE MAIN 2023

In an ice crystal, each water molecule is hydrogen bonded to ……... neighbouring molecules.

JEE Main Chemistry Easy

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Q JEE MAIN 2023

If the radius of the first orbit of hydrogen atom $\mathbf{a}_0$, then de-Broglie's wavelength of electron in $3^{\text {rd }}$ orbit is

JEE Main Chemistry Medium

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Q JEE MAIN 2023

In an experiment with Vernier callipers of least count 0.1 mm, when two jaws are joined together the zero of Vernier scale lies right to...

JEE Main Physics Hard

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Q JEE MAIN 2023

A stone tied to 180 cm long string at its end is making 28 revolutions in horizontal circle in every minute. The magnitude of acceleration...

JEE Main Physics Medium

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Q JEE MAIN 2023

Which one of the following elements will remain as liquid inside pure boiling water?

JEE Main Chemistry Medium

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Q JEE MAIN 2023

A gas mixture consists of 2 moles of oxygen and 4 moles of neon at temperature T. Neglecting all vibrational modes, the total internal energy...

JEE Main Physics Easy

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Q JEE MAIN 2023

The acceleration due to gravity at height h above the earth if h <

JEE Main Physics Easy

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Q JEE MAIN 2023

The reaction $2 \mathrm{NO}+\mathrm{Br}_2 \rightarrow 2 \mathrm{NOBr}$ takes places through the mechanism given below: $\mathrm{NO}+\mathrm{Br}_2 \Leftrightarrow \mathrm{NOBr}_2$ (fast) $\mathrm{NOBr}_2+\mathrm{NO} \rightarrow 2 \mathrm{NOBr}$ (slow) The overall...

JEE Main Chemistry Medium

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Q JEE MAIN 2023

In the following reaction ‘B’ is

JEE Main Chemistry Hard

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