JEE Main questions
34495 published questions with worked solutions.
- A tuning fork vibrates with frequency 256 Hz and gives one beat per second with the third normal mode of vibration of an open...
- The number of amplitude modulated broadcast stations that can be accommodated in a 300 kHz band width for the highest modulating...Not in JEE or NEET syllabus
- A body of mass m is moving in a circular orbit of radius R about a planet of mass M. At some instant, it splits into two equal...
- Light of wavelength 550 nm falls normally on a slit of width 22.0 10^ -5 cm. The angular position of the second minima from the...
- A given object takes n times more time to slide down a 45° rough inclined plane as it takes to slide down a perfectly smooth 45°...
- A Carnot's engine works as a refrigerator between 250 K and 300 K. It receives 500 cal heat from the reservoir at the lower...
- An automobile, travelling at 40 km/h, can be stopped at a distance of 40 m by applying brakes. If the same automobile is...
- Take the mean distance of the moon and the sun from the earth to be 0.4 10^6 km and 150 10^6 km respectively. Their masses are 8...
- A body of mass M and charge q is connected to a spring of spring constant k. It is oscillating along x-direction about its...
- In a screw gauge, 5 complete rotations of the screw cause it to move a linear distance of 0.25 cm. There are 100 circular scale...
- A solution containing active cobalt ^ 60 _ 27 Co having activity of 0.8 µCi and decay constant is injected in an animal's body....
- A monochromatic beam of light has a frequency v = 3 2 10^ 12 Hz and is propagating along the direction i + j 2 . It is polarized...
- Identify the pair in which the geometry of the species is T-shape and square pyramidal, respectively
- In hydrogen azide, the bond orders of bonds (I) and (II) are _______. H - N (I) ---- N (II) ---- N
- For Na^+, Mg^ 2+ , F^- and O^ 2- ; the correct order of increasing ionic radii is:
- The correct match between items of List-I and List-II is: List-I: (i) Coloured impurity (ii) Mixture of o-nitrophenol and...
- The copolymer formed by addition polymerization of styrene and acrylonitrile in the presence of peroxide is :Not in JEE Main or NEET syllabus
- Which of the following statements about colloids is false?Not in JEE Main or NEET syllabus
- In graphite and diamond, the percentage of p-character of the hybrid orbitals in hybridisation are respectively:
- The minimum volume of water required to dissolve 0.1 g lead (II) chloride to get a saturated solution (K_ sp of PbCl_2 = 3.2 10^...