JEE Main questions
34568 published questions with worked solutions.
- A cylinder is rolling down on an inclined plane of inclination 60°. It's acceleration during rolling down will be x 3 m/s², where...
- A ball rolls off the top of a stairway with horizontal velocity u. The steps are 0.1 m high and 0.1 m wide. The minimum velocity...
- When the displacement of a simple harmonic oscillator is one third of its amplitude, the ratio of total energy to the kinetic...
- A 16 Ω wire is bend to form a square loop. A 9 V battery with internal resistance 1 Ω is connected across one of its sides. If a...
- When a hydrogen atom going from n = 2 to n = 1 emits a photon, its recoil speed is x5 m/s. Where x = ________. (Use mass of...
- A square loop of side 10 cm and resistance 0.7 Ω is placed vertically in east-west plane. A uniform magnetic field of 0.20 T is...
- Match List I with List II. List I (Substances): A. Ziegler catalyst B. Blood pigment C. Wilkinson catalyst D. Vitamin B₁₂ List II...
- Given below are two statements : Statement I : The electronegativity of group 14- elements from Si to Pb, gradually decreases....
- In chromyl chloride test for confirmation of Cl⁻ ion, a yellow solution is obtained. Acidification of the solution and addition...
- Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : Aryl halides...
- Type of amino acids obtained by hydrolysis of proteins is :
- Appearance of blood red colour, on treatment of the sodium fusion extract of an organic compound with FeSO₄ in presence of...
- The difference in energy between the actual structure and the lowest energy resonance structure for the given compound is
- In alkaline medium, MnO₄⁻ oxidises I⁻ to
- Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R Assertion A : The first...
- The correct set of four quantum numbers for the valence electron of rubidium atom (Z = 37) is:
- The interaction between π bond and lone pair of electrons present on an adjacent atom is responsible for
- The osmotic pressure of a dilute solution is 7 × 10⁵ Pa at 273 K. Osmotic pressure of the same solution at 283 K is ______ × 10⁴...
- The mass of zinc produced by the electrolysis of zinc sulphate solution with a steady current of 0.015 A for 15 minutes is ______...
- From the compounds given below, number of compounds which give positive Fehling's test is ______. Benzaldehyde, Acetaldehyde,...