JEE Main questions
34495 published questions with worked solutions.
- The time taken by a block of mass m to slide down from the highest point to the lowest point on a rough inclined plane is 50%...
- Two nuclei of mass number 3 combine with another nucleus of mass number 4 to yield a nucleus of mass number 10. If the binding...
- A solid sphere of mass M and radius R is divided into two unequal parts. The smaller part having mass M/8 is converted into a...
- Two projectiles are projected with the same initial velocities at the 15° and 30° with respect to the horizontal. The ratio of...
- A string A of length 0.314 m and Young's modulus 2 × 10¹⁰ N/m² is connected to another string B of length and Young's modulus...
- One gas of n₁ mole of molecules at temperature T₁, volume V₁, and pressure P₁, and another gas of n₂ mole of molecules at...
- A voltmeter with internal resistance of x Ω can be used to measure upto 20 V. In order to increase its measuring range to 30 V,...
- A parallel plate air capacitor is connected to a battery. The plates are pulled apart at uniform speed v. If x is the separation...
- A telescope with objective diameter R is used to observe a distant star emitting light of wavelength 500 nm, at a resolution of 5...
- A 1 kg block subjected to two simultaneous forces (2î+3ĵ+4k̂) N and (3î−ĵ−2k̂) N is moved a distance of 25 m along (3î−4ĵ)...
- The surface tension of a soap solution is 3.5 × 10⁻² N/m. The work required to increase the radius of a soap bubble from 1 cm to...
- The velocity of a particle executing simple harmonic motion along x-axis is described as v² = 50 − x², where x represents...
- A body of mass 2 kg begins to move under the influence of time dependent force F = (2t i + 6t^2 j) N, where î and ĵ are unit...
- An inductor of 10 mH, capacitor of 0.1 μF and a resistor of 100 Ω are connected in series across an a.c power supply 220 V, 70...
- Which of the following is correct set of 4 quantum numbers of 19th electron in Chromium (Atomic number = 24) in accordance with...
- At T(K), the equilibrium constant of A₂(g) + B₂(g) ⇌ C(g) is 2.7 × 10⁻⁵. What is the equilibrium constant for 13A₂(g) + 13B₂(g) ⇌...
- In order to oxidise a mixture of 1 mole each of FeC₂O₄, Fe₂(C₂O₄)₃, FeSO₄ and Fe₂(SO₄)₃ in acidic medium, the number of moles of...
- A monoatomic anion (A⁻) has 45 neutrons and 36 electrons. Atomic mass, group in the periodic table and physical state at room...
- Given below are two statements: Statement I: The covalency of oxygen is generally two but it can exceed upto four. The oxidation...
- The correct statements among the following are, A. Mo(VI) and W(VI) are less stable than Cr(VI). B. Ce⁴⁺ and Tb⁴⁺ are oxidant...