JEE Main questions
34495 published questions with worked solutions.
- A capacitor has air as dielectric medium and two conducting plates of area 12 cm² and they are 0.6 cm apart. When a slab of...
- A given object takes n times the time to slide down 45° rough inclined plane as it takes the time to slide down an identical...
- A coil of negligible resistance is connected in series with 90 Ω resistor across 120 V, 60 Hz supply. A voltmeter reads 36 V...
- There are 100 divisions on the circular scale of a screw gauge of pitch 1 mm. With no measuring quantity in between the jaws, the...
- A proton and an electron have the same de Broglie wavelength. If K_p and K_e be the kinetic energies of proton and electron...
- The coercivity of a magnet is 5 × 10³ A/m. The amount of current required to be passed in a solenoid of length 30 cm and the...
- Small water droplets of radius 0.01 mm are formed in the upper atmosphere and falling with a terminal velocity of 10 cm/s. Due to...
- An alternating emf E = 110√2 sin 100t volt is applied to a capacitor of 2μF, the rms value of current in the circuit is ………. mA.
- Two slits are 1 mm apart and the screen is located 1 m away from the slits. A light wavelength 500 nm is used. The width of each...
- An object of mass 0.2 kg executes simple harmonic motion along x axis with frequency of ( 25 ) Hz. At the position x = 0.04 m the...
- A body of mass M thrown horizontally with velocity v from the top of the tower of height H touches the ground at a distance of...
- In qualitative test for identification of presence of phosphorous, the compound is heated with an oxidising agent. Which is...
- The shape of carbocation is:
- Given below are two statements: Statement (I): S_N2 reactions are 'stereospecific', indicating that they result in the formation...
- Match List-I with List-II. List-I (Test): (A) Bayer's test (B) Ceric ammonium nitrate test (C) Phthalein dye test (D) Schiff's...
- Identify the incorrect statements about group 15 elements: (A) Dinitrogen is a diatomic gas which acts like an inert gas at room...
- The equilibrium Cr₂O₇²⁻ ⇌ 2CrO₄²⁻ is shifted to the right in:
- Given below are two statements: Statement (I): A Buffer solution is the mixture of a salt and an acid or a base mixed in any...
- The correct sequence of acidic strength of the following aliphatic acids in their decreasing order is: CH₃CH₂COOH, CH₃COOH,...
- Given below are two statements: Statement (I): All the following compounds react with p-toluenesulfonyl chloride. C₆H₅NH₂,...