NEET questions
18092 published questions with worked solutions.
- In a longitudinal section of a root, starting from the tip upward, the four zones occur in the following order :-
- Which one of the following is living fossil :-
- Which form of RNA has a structure resembling clover leaf ?
- Common indicator organism of water pollution is :-
- If you are provided with root-tips of onion in your class and are asked to count the chromosomes which of the following stages...
- When a diploid female plant is crossed with a tetraploid male, the ploidy of endosperm cells in the resulting seed is :-
- A rectangular block of mass m and area of cross-section A floats in a liquid of density . If it is given a small vertical...
- A Carnot engine whose sink is at 300 K has an efficiency of 40%. By how much should the temperature of source be increased so as...
- When a charged particle moving with velocity V is subjected to a magnetic field of induction B , the force on it is non-zero....
- Two cells, having the same e.m.f., are connected in series through an external resistance R. Cell have internal resistances r_1...
- A black body at 1227^ C emits radiations with maximum intensity at a wavelength of 5000 . The temperature of the body is...
- Two circular coil 1 and 2 are made from the same wire but the radius of the 1st coil is twice that of the 2nd coil. What...
- A transistor-oscillator using a resonant circuit with an inductor L (of negligible resistance) and a capacitor C in series...
- The binding energy of deuteron is 2.2 MeV and that of ^4_2 He is 28 MeV . If two deuterons are fused to form one ^4_2 He then the...
- In a radioactive material the activity at time t_1 is R_1 and at a later time t_2, it is R_2. If the decay constant of the...
- A body of mass 3 kg is under a constant force which causes a displacement s in metres in it, given by the relation s = 1 3 t^2,...
- A particle moves along a straight line OX. At a time t (in seconds) the distance x (in metres) of the particle from O is given by...
- The velocity v of a particle at time t is given by v = at + b t + c , where a, b and c are constants. The dimensions of a, b and...
- A microscope is focused on a mark on a piece of paper and then a slab of glass of thickness 3 cm and refractive index 1.5 is...
- 300 J of work is done in sliding a 2 kg block up an inclined plane of height 10m. Taking g = 10 m/s ^2, work done against...