JEE Main questions
34495 published questions with worked solutions.
- A player caught a cricket ball of mass 150 g moving at a speed of 20 m/s. If the catching process is completed in 0.1 s, the...
- The diameter of a sphere is measured using a vernier caliper whose 9 divisions of main scale are equal to 10 divisions of vernier...
- An electron with kinetic energy 5 eV enters a region of uniform magnetic field of 3 μT perpendicular to its direction. An...
- Resistance of a wire at 0°C, 100°C and t°C is found to be 10 Ω, 10.2 Ω and 10.95 Ω respectively. The temperature t in Kelvin...
- An electric field, E = 2 i + 6 j + 8 k 6 passes through the surface of 4 m² area having unit vector n = ( 2 i + j + k 6 ). The...
- A liquid column of height 0.04 cm balances excess pressure of soap bubble of certain radius. If density of liquid is 8 × 10³ kg...
- A closed and an open organ pipe have same lengths. If the ratio of frequencies of their seventh overtones is ( a - 1 a ) then the...
- A parallel beam of monochromatic light of wavelength 600 nm passes through single slit of 0.4 mm width. Angular divergence...
- In an alpha particle scattering experiment distance of closest approach for the α particle is 4.5 × 10⁻¹⁴ m. If target nucleus...
- Combustion of glucose (C₆H₁₂O₆) produces CO₂ and water. The amount of oxygen (in g) required for the complete combustion of 900 g...
- Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R: Assertion A: The stability...
- Match List I with List-II List-I (Name of the test): A. Borax bead test B. Charcoal cavity test C. Cobalt nitrate test D. Flame...
- Match List I and with List II List-I (Molecule): A. NH₃ B. BrF₅ C. PCl₅ D. CH₄ List-II (Shape): I. Square pyramid II. Tetrahedral...
- For the given hypothetical reactions, the equilibrium constants are as follows: X ⇌ Y; K₁ = 1.0, Y ⇌ Z; K₂ = 2.0, Z ⇌ W; K₃ =...
- Thiosulphate reacts differently with iodine and bromine in the reaction given below: 2S₂O₃²⁻ + I₂ → S₄O₆²⁻ + 2I⁻ and S₂O₃²⁻ +...
- Among the following halogens F₂, Cl₂, Br₂ and I₂. Which can undergo disproportionation reaction?
- Given below are two statements: Statement I: N(CH₃)₃ and P(CH₃)₃ can act as ligands to form transition metal complexes. Statement...
- Match List I with List II List-I (Elements): A. Cl, S B. Ge, As C. Fr, Ra D. F, O List-II (Properties in their respective...
- Iron (III) catalyses the reaction between iodide and persulphate ions, in which A. Fe³⁺ oxidises the iodide ion B. Fe³⁺ oxidises...
- Match List I with List II List-I (Compound): A. Fe₄[Fe(CN)₆]₃·xH₂O B. [Fe(CN)₅NOS]⁴⁻ C. [Fe(SCN)]²⁺ D. (NH₄)₃PO₄·12MoO₃ List-II...