List of top Questions asked in NEET (UG)

The enolic form of ethyl acetoacetate as below has
The heart of a man pumps $5$ litres of blood through the arteries per minute at a pressure of $150 \,mm$ of mercury. If the density of mercury be $13.6 \times 10^3$ $kg/m^3$ and $g$ = $10\, m/s^2$ then the power
The fundamental frequency of a closed organ pipe of length $20\,cm$ is equal to the second overtone of an organ pipe open at both the ends. The length of organ pipe open at both the ends is
The enzyme that is not present in succus entericus is
Which structures perform the function of mitochondria in bacteria?
Transformation was discovered by
During which phase(s) of cell cycle, amount of DNA in a cell remains at 4C level if the initial amount is denoted as 2C?
Which one of the following statements is correct?
Which one of the following shows isogamy with non-flagellated gametes?
Geitonogamy involves
1.0 g of magnesium is burnt with 0.56 g O2 in a closed vessel. Which reactant is left in excess and how much ?
(At. wt. Mg =24; O=16)
When 22.4 litres of H2(g) is mixed with 11.2 litres of Cl2 (g), each at S.T.P., the moles of HCl (g) formed is equal to :
Equal masses of H2, O2 and methane have been taken in a container of volume V at temperature 27°C in identical conditions. The ratio of the volumes of gases H2 : O2 : methane would be :
Acidity of diprotic acids in aqueous solutions increases in the order:
(a) \(H_2O_2 + O_3 → H_2O + 2O_2\)
(b) \(H_2O_2 + Ag_2O → 2Ag + H_2O + O_2\)
Role of hydrogen peroxide in the above reactions is respectively:
Which of the following molecules has the maximum dipole moment?
Which one of the following species has plane triangular shape?
A conducting sphere of radius R is given a onducting charge Q. The electric potential and the electric field at the centre of the sphere respectively are:
A certain number of spherical drops of a liquid of radius 'r' coalesce to form a single drop of radius 'R' and volume 'V'. If 'T' is the surface tension of the liquid, then:
If n1, n2 and n3 are the fundamental frequencies of three segments into which a string is divided, then the original fundamental frequency n of the string is given by:
The number of possible natural oscillations of air column in a pipe closed at one end of length 85 cm whose frequencies lie below 1250Hz are: (velocity of sound = 340 ms-1)
A beam of light of λ = 600 nm from a distant source falls on a single slit 1 mm wide and the resulting diffraction pattern is observed on a screen 2 m away. The distance between first dark fringes on either side of the central bright fringe is:
A projectile is fired from the surface of the earth with a velocity of 5 ms-1 and angle θ with the horizontal. Another projectile fired from another planet with a velocity of 3 ms-1 at the same angle follows a trajectory which is identical with the trajectory of the projectile fired from the earth. The value of the acceleration due to gravity on the planet is (in ms-2) is: (given g=9.8 ms-2)
A system consists of three masses m1, m2 and m3 connected by a string passing over a pulley P. The mass m1 hangs freely and m2 and m3 are on a rough horizontal table (the coefficient of friction = μ).
The pulley is frictionless and of negligible mass. The downward acceleration of mass m1 is:
(Assume m1=m2=m3=m)
A system consists of three masses m1, m2 and m3
The ratio of the accelerations for a solid sphere (mass 'm' and radius 'R') rolling down an incline of angle 'θ' without slipping and slipping down the incline without rolling is: