Engineering Questions — JEE Main
379 solved questions with detailed explanations
Q.34. Two charged conducting spheres S and S of radii cm and cm are connected to each other by a wire. After equilibrium is established, the ratio of electric fields on S and S spheres are and res
Q.7. The number of elements in the set is :
Q.16. If , then is equal to:
Q.68. Identify the incorrect statement about tertiary structure of proteins.
Q.72. The osmotic pressure of a living cell in 12 atm at 300 K. The strength of sodium chloride solution that is isotonic with the living cell at this temperature is g L⁻¹. (Nearest integer) (Given :
Q.53. Match the List-I with List-II : List-I (Orbital) | List-II (Radial nodes and nodal plane) A. 2s | I. 1 Radial node + two nodal planes B. 3s | II. 1 Radial node + one nodal plane C. 3p | III. 2 R
Q.22. If , then is equal to
Q.50. In a double slit experiment, when one of the slits is covered by a transparent mica sheet of refractive index 1.56, the central fringe shifts to the position of bright fringe, obtained with bot
Q.72. For the following reaction at 50°C and 2 atm pressure, 2N₂O₃ (g) ⇌ 2N₂O₄(g) + O₂(g) N₂O₃ is 50% dissociated The magnitude of standard free energy change at this temperature is x. x = ______ J mo
Q.32. A solid cylinder having radius R and length L is slipping on a rough horizontal plane. At time t = 0 the cylinder has a translational velocity v = 49 m/s, perpendicular to its axis and a rotatio
Q.48. The energy released when kg of is converted into by proton bombardment is eV. The value of is ________ (Nearest integer) (Mass of u, mass of u, mass of proton u and 1 u MeV/c and Avogad
Q.50. Two masses of 3.4 kg and 2.5 kg are accelerated from an initial speed of 5 m/s and 12 m/s, respectively. The distances traversed by the masses in the 5th second are 104 m and 129 m, respectively
Q.68. Given below are two statements : Statement I: Compound (X), shown below, dissolves in NaHCO₃ solution and has two chiral carbon atoms [Figure: Compound (X)]. Statement II: Compound (Y), shown be
Q.32. A water spray gun is attached to a hose of cross sectional area . The gun comprises of 10 perforations each of cross sectional area of . If the water flows in the hose with the speed of , calcul
Q.67. Consider the following reaction. [Figure: Reaction scheme starting with a cyclic ketone with an ester group, undergoing reduction with NaBH4/MeOH, then NaOH(aq)/Δ, and finally H3O+.] The major p
Q.47. The heat extracted out of x gram of water initially at 50°C to cool it down to 0°C is sufficient to evaporate (1000 - x) gram of water also initially at 50°C. The value of x (closest integer) is
Q.36. A rigid dipole undergoes a simple harmonic motion about its centre in the presence of an electric field . If another electric field is introduced to the system, what will be the percentage chan
Q.43. K₁ and K₂ be the maximum kinetic energies of photoelectrons emitted from a surface of a given material for the light of wavelength λ₁ and λ₂, respectively. If λ₁ = 2 λ₂, then the work function o
Q.11. If , then the value of is :
Q.27. The charge stored by the capacitor C in the given circuit in the steady state is .......... C. [Figure: Circuit diagram with capacitor]