JEE Main questions
34495 published questions with worked solutions.
- Moment of inertia of a cylinder of mass M, length L and radius R about an axis passing through its centre and perpendicular to...
- Using screw gauge of pitch 0.1 cm and 50 divisions on its circular scale, the thickness of an object is measured. It should...
- In a radioactive material, fraction of active material remaining after time t is 9/16. The fraction that was remaining after t/2...
- When a diode is forward biased, it has a voltage drop of 0.5 V. The safe limit of current through the diode is 10 mA. If a...Not in JEE Advanced syllabus
- A charged particle carrying charge 1 is moving with velocity (2 i +3 j +4 k ) m/s. If an external magnetic field of (5 i +3 j -6...
- The magnetic field of a plane electromagnetic wave is B =3 10^ -8 [200 (y+ct)] i T where c = 3 10^8 m/s is the speed of light....
- In a Young's double slit experiment, light of 500 nm is used to produce an interference pattern. When the distance between the...
- When a long glass capillary tube of radius 0.015 cm is dipped in a liquid, the liquid rises to a height of 15 cm within it. If...
- A person of 80 kg mass is standing on the rim of a circular platform of mass 200 kg rotating about its axis as 5 revolutions per...
- A bakelite beaker has volume capacity of 500 cc at 30ºC. When it is partially filled with V_m volume (at 30ºC) of mercury, it is...
- A cricket ball of mass 0.15 kg is thrown vertically up by a bowling machine so that it rises to a maximum height of 20 m after...
- The electronic spectrum of [ Ti(H_2O)_6 ]^ 3+ shows a single broad peak with a maximum at 20,300 cm ^ -1 . The crystal field...
- An acidic buffer is obtained on mixing :
- An organic compound [A], molecular formula C_ 10 H_ 20 O_2 was hydrolyzed with dilute sulphuric acid to give a carboxylic acid...
- The complex that can show optical activity is-
- Henry's constant (in kbar) for four gases , , and in water at 298 K is given below : | | | | | | |---|---|---|---|---| | K_H | 50...
- Of the species, NO, NO^+ , NO^ 2+ and NO^- , the one with minimum bond strength is-
- Which one of the following compounds possesses the most acidic hydrogen ?
- The atomic number of the element unnilennium is-
- Glycerol is separated in soap industries by-