List of top Questions asked in NEET (UG)

The correct structure of tribromooctaoxide is

Two similar thin $equi-convex$ lenses, of focal length $f$ each, are kept coaxially in contact with each other such that the focal length of the combination is $F_1$. When the space between the two lenses is filled with glycerin (which has the same refractive index $(p = 1.5)$ as that of glass) then the equivalent focal length is $F_2$. The ratio $F_1$ : $F_2$ will be :

How does steroid hormone influence the cellular activities?

A selectable marker is used to:

The correct order of the basic strength of methyl substituted amines in aqueous solution is :

A copper rod of $88 \,cm$ and an aluminium rod of unknown length have their increase in length independent of increase in temperature. The length of aluminium rod is $(a_{C_{u}}=1.7 \times 10^{-5}\,K^{-1}$ and $\left.a_{A_{l}}=2.2 \times 10^{-5} K^{-1}\right)$

Use of an artificial kidney during hemodialysis may result in : (a) Nitrogenous waste build-up in the body (b) Non-elimination of excess potassium ions (c) Reduced absorption of calcium ions from gastro-intestinal tract (d) Reduced RBC production Which of the following options is the most appropriate?

Crossing over takes place between which chromatids and in which stage of the cell cycle ?

The two antibiotic resistance genes on vector pBR322 are for

A cycle wheel of radius $0.5\, m$ is rotated with constant angular velocity of $10 \,rad/s$ in a region of magnetic field of $0.1\, T$ which is perpendicular to the plane of the wheel. The $EMF$ generated between its centre and the rim is,

$\alpha$-particle consists of:

For an ideal solution, the correct option is :

For a cell involving one electron \(E^\ominus cell=0.59V\) at 298 K, the equilibrium constant for the cell reaction is: [Given that \(\frac{ 2.303 RT }{F}\) \(=0.059 V\) at\( T 298 K \)] 

The major product of the following reaction is:

For an ideal solution, the correct option is:

Which of the following is incorrect statement?

Among the following, the narrow spectrum antibiotic is:

A block of mass \(10 kg\) is in contact against the inner wall of a hollow cylindrical drum of radius \( 1 m.\) The coefficient of friction between the block and the inner wall of the cylinder is \( 0.1\). The minimum angular velocity needed for the cylinder to keep the block stationary when the cylinder is vertical and rotating about its axis, will be: (\(g=10 \frac{m}{s^2}\)

A copper rod of \(88 cm \) and an aluminium rod of unknown length have their increase in length independent of increase in temperature. The length of aluminium rod is: (\(\alpha_{cu}-1.7\times 10^{-5}K^{-1} \)and \(\alpha_{Al}=2.2×10^{-5}K^{-1}\)) 

A body weighs 200 N on the surface of the earth. How much will it weigh half way down to the centre of the earth?

The total energy of an electron in an atom in an orbit is 3.4 eV. Its kinetic and potential energies are, respectively:

In total internal reflection when the angle of incidence is equal to the critical angle for the pair of media in contact, what will be angle of refraction?

Cells in \(G_0\) phase:

What is the fate of the male gametes discharged in the synergid?

Pinus seed cannot germinate and establish without fungal association. This is because