List of top Questions asked in NEET (UG)- 2019

Bicarpellary ovary with obliquely placed septum is seen in :-

Which one of the following statements regarding post-fertilization development in flowering plants is incorrect ?

The given figure shows transport of two molecules $A$ and $B$ through three different modes of facilitated diffusion. Select the correct option regarding it.

Respiratory Quotient (RQ) value of tripalmitin is -

In the dicot root the vascular cambium originates from :-

Following table summarises the comparisons between phyllodades and cladodes (cladophylls). Pick up the wrong differences and select the correct option,

What type of pollination takes place in Vallisneria?

Which of the following ecological pyramids is generally inverted ?

In pteridophytes, main plant body is a , which is into true roots, stem and leaves. Fill the blanks in above statement and select the correct option.

The number of sigma ($\sigma$)and pi ($\pi$) bonds in pent-2-en-4-yne is :

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 two antibiotic resistance genes on vector pBR322 are for

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?

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:

Among the following, the narrow spectrum antibiotic is:

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

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 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: (\(g=10 \frac{m}{s^2}\)