JEE Main questions
34495 published questions with worked solutions.
- Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : The...
- The dimension of _0 _0 is equal to that of : ( _0 = Vacuum permeability and _0 = Vacuum permittivity)
- A capillary tube of radius 0.1 mm is partly dipped in water (surface tension 70 dyn/cm and glass water contact angle ≈ 0°) with...
- Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) :...
- Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : The...
- A photoemissive substance is illuminated with a radiation of wavelength _i so that it releases electrons with de-Broglie...
- An object with mass 500 g moves along x-axis with speed v = 4 x m/s. The force acting on the object is :
- Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : The...
- Which one of the following forces cannot be expressed in terms of potential energy ?
- A mirror is used to produce an image with magnification of 1 4 . If the distance between object and its image is 40 cm, then the...
- The equation of a wave travelling on a string is y = sin [20πx + 10πt], where x and t are distance and time in SI units. The...
- The electric field in a region is given by E = (2 i +4 j +6 k ) 10^3 N/C. The flux of the field through a rectangular surface...
- An inductor of reactance 100 Ω, a capacitor of reactance 50 Ω, and a resistor of resistance 50 Ω are connected in series with an...
- Two cylindrical rods A and B made of different materials, are joined in a straight line. The ratios of lengths, radii and thermal...
- A parallel plate capacitor has charge 5 10^ -6 C. A dielectric slab is inserted between the plates and almost fills the space...
- Given below are two statements : 1 M aqueous solutions of each of Cu(NO₃)₂, AgNO₃, Hg₂(NO₃)₂ ; Mg(NO₃)₂ are electrolysed using...
- Mixture of 1 g each of chlorobenzene, aniline and benzoic acid is dissolved in 50 mL ethyl acetate and placed in a separating...
- A(g) B(g) + C(g) is a first order reaction. Time: t, ∞ P_ system : p_t, p_ The reaction was started with reactant A only. Which...
- "P" is an optically active compound with molecular formula C₆H₁₂O. When 'P' is treated with 2, 4–dinitrophenlhydrazine, it gives...
- The number of unpaired electrons responsible for the paramagnetic nature of the following complex species are respectively:...