JEE Main questions
34568 published questions with worked solutions.
- Escape velocity of a body from earth is 11.2 km/s. If the radius of a planet be one third the radius of earth and mass be...
- A block of mass m is placed on a surface having vertical cross-section given by y = x²/4. If coefficient of friction is 0.5, the...
- If three moles of monoatomic gas (γ = 5/3) is mixed with two moles of a diatomic gas (γ = 7/5), the value of adiabatic exponent γ...
- If 50 Vernier divisions are equal to 49 main scale divisions of a traveling microscope and one smallest reading of main scale is...
- When a potential difference V is applied across a wire of resistance R, it dissipates energy at a rate W. If the wire is cut into...
- A power transmission line feeds input power at 2.3 kV to a step-down transformer with its primary winding having 3000 turns. The...
- The current of 5 A flows in a square loop of sides 1 m is placed in air. The magnetic field at the centre of the loop is X√2 ×...
- Two discs of moment of inertia I₁ = 4 kg m² and I₂ = 2 kg m², about their central axes and normal to their planes, rotating with...
- Two resistance of 100 Ω and 200 Ω are connected in series with a battery of 4 V and negligible internal resistance. A voltmeter...
- A vector has magnitude same as that of A = 3 i + 4 j and is parallel to B = 4 i + 3 j. The x and y components of this vector in...
- A simple pendulum is placed at a place where its distance from the earth's surface is equal to the radius of the earth. If the...
- A big drop is formed by coalescing 1000 small identical drops of water. If E₁ be the total surface energy of 1000 small drops of...
- Choose the correct statements about the hydrides of group 15 elements. A. The stability of the hydrides decreases in the order...
- Given below are two statements : Statement-I : Since Fluorine is more electronegative than nitrogen, the net dipole moment of NF₃...
- Reduction potential of ions are given below: ClO₄⁻ E° = 1.19 V, IO₄⁻ E° = 1.65 V, BrO₄⁻ E° = 1.74 V. The correct order of their...
- Given below are two statements: Statement I : High concentration of strong nucleophilic reagent with secondary alkyl halides...
- The correct stability order of carbocations is
- The solution from the following with highest depression in freezing point/lowest freezing point is
- Given below are two statements: Statement-I : Along the period, the chemical reactivity of the elements gradually increases from...
- A and B formed in the following reaction are : CrO₂Cl₂ + 4NaOH → A + 2NaCl + 2H₂O, A + 2HCl + 2H₂O₂ → B + 3H₂O