List of top Questions asked in NEET (UG)

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)
Artificial sweetener which is stable under cold conditions only is
Which of the following hormones is produced under the condition of stress which stimulates glycogenolysis in the liver of human beings?
Identity Z in the sequence of reactions, $CH_3 CH_2 CH=CH_2 \xrightarrow{HBr/H_2 O_2}Y \xrightarrow{C_2H_5 ON_a}Z$
Calculate the energy in joule corresponding to light of wavelength 45 nm (Planck's constant, $h=6.63\times10^{-34}$ Js; speed of light, $c=3\times 10^{8}$.
$Be^{2+}$ is isoelectronic with which of the following ions?
A balloon with mass m is descending down with an acceleration a (where a < g). How much mass should be removed from it so that it starts moving up with an acceleration $a$?
A black hole is an object whose gravitational field is so strong that even light cannot escape from it. To what approximate radius would earth (mass $= 5.98 \times 10^{24} \, kg$) have to be compressed to be a black hole?
Copper of fixed volume $V$ is drawn into wire of length $l$. When this wire is subjected to a constant force $F$, the extension produced in the wire is $ \Delta l $. Which of the following graphs is a straight line?
Certain quantity of water cools from 70$^{\circ}$C to 60$^{\circ}$C in the first 5 minutes and to 54$^{\circ}$C in the next 5 minutes. The temperature of the surroundings is
A conducting sphere of radius $R$ is given a charge $Q$. The electric potential and the electric field at the centre of the sphere respectively are
Two cities are $150\, km$ apart. Electric power is sent from one city to another city through copper wires. The fall of potential per km is $8\, volt$ and the average resistance per km is $0.5\, \Omega$. The power loss in the wire is
In a region, the potential is represented by V(x, y, z) = 6x - 8xy - 8y + 6yz, where $V$ is in volts and $x, y, z$ are in metres. The electric force experienced by a charge of $2$ coulomb situated at point $(1, 1, 1)$ is
A body of mass $(4m)$ is lying in $x-y$ plane at rest. It suddenly explodes into three pieces. Two pieces, each of mass $(m)$ move perpendicular to each other with equal speeds $(v)$. The total kinetic energy generated due to explosion is
The hormone releasing IUD is
Which is the particular type of drug that is obtained from the plant whose one flowering branch is shown here?
In the Young's double- slit experiment, the intensity of light at a point on the screen where the path difference is λ is K, (λ being the wave length of light used). The intensity at a point where the path difference is \(\frac{λ}{4}\), will be:
Equal masses of $H_2, O_2$ and methane have been taken in a container of volume V at temperature $27^\circ$C in identical conditions. The ratio of the volumes of gases ${H_2 : O_2 :CH_4}$ would be
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 :
A marine cartilaginous fish that can produce electric current is:
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)
The main function of mammalian corpus luteum is to produce
Viruses have
Which one of the following living organisms completely lacks a cell wall?
Stimulation of a muscle fiber by a motor neuron occurs at