JEE Main questions
34495 published questions with worked solutions.
- The linear mass density of a thin rod AB of length L varies from A to B as (x)= _0 (1+ x L ), where x is the distance from A. If...
- When a particle of mass m is attached to a vertical spring of spring constant k and released, its motion is described by y(t) =...
- In a dilute gas at pressure P and temperature T, the mean time between successive collisions of a molecule varies with T as :
- A fluid is flowing through a horizontal pipe of varying cross-section, with speed v ms ^ -1 at a point where the pressure is P...
- Assuming the nitrogen molecule is moving with r.m.s. velocity at 400 K, the de-Broglie wavelength of nitrogen molecule is close...
- Particle A of mass m_1 moving with velocity ( 3 i + j ) ms ^ -1 collides with another particle B of mass m_2 which is at rest...
- A charged particle going around in a circle can be considered to be a current loop. A particle of mass m carrying charge q is...
- A square loop of side 2a and carrying current I is kept in xz plane with its centre at origin. A long wire carrying the same...
- When a car is at rest, its driver sees rain drops falling on it vertically. When driving the car with speed v, he sees that rain...
- The centre of mass of a solid hemisphere of radius 8 cm is X cm from the centre of the flat surface. Then value of x is ________ .
- In a series LR circuit, power of 400 W is dissipated from a source of 250 V, 50 Hz. The power factor of the circuit is 0.8. In...
- A Young's double-slit experiment is performed using monochromatic light of wavelength . The intensity of light at a point on the...
- The value of K_C is 64 at 800 K for the reaction N_2(g)+3H_2(g) 2NH_3(g) . The value of K_C for the following reaction is :...
- The element that can be refined by distillation is :Not in JEE Main or NEET syllabus
- The correct match between Item-I and Item-II : Item-I: (a) Natural rubber (b) Neoprene (c) Buna-N (d) Buna-S Item-II: (I) 1,...Not in JEE Main or NEET syllabus
- Mischmetal is an alloy consisting mainly of:
- Reaction of an inorganic sulphite X with dilute H_2SO_4 generates compound Y. Reaction of Y with NaOH gives X. Further, the...
- Match the following : List-I: (i) Lucas Test (ii) Dumas method (iii) Kjeldahl's method (iv) Hinsberg Test List-II: (a)...
- For the given cell ; Cu(s)|Cu^ 2+ (C_1M)||Cu^ 2+ (C_2M)|Cu(s) change in Gibbs energy ( G) is negative, if :
- A crystal is made up of metal ions 'M1' and 'M2' and oxide ions. Oxide ions form a ccp lattice structure. The cation 'M1'...Not in JEE Main or NEET syllabus