List of top Questions asked in NEET (UG)

Match the organism with its use in biotechnology:

In Young’s double slit experiment, if the separation between coherent sources is halved and the distance of the screen from the coherent sources is doubled, then the fringe width becomes :

A charged particle having drift velocity of \(7.5×10^{−4} m s^{−1} \) in an electric field of  has a mobility in  \(m^2 V^{−1} s^{−1}\) of :

The quantities of heat required to raise the temperature of two solid copper spheres of radii \(r _1\) and \(r_2\)  \((r_1=1.5 r_2 )\) through \(1 K\) are in the ratio

A capillary tube of radius r is immersed in waterand water rises in it to a height h. The mass of the water in the capillary is 5 g. Another capillary tube of radius 2r is immersed in water. The massof water that will rise in this tube is

The average thermal energy for a mono-atomic gasis : (kBis Boltzmann constant and T, absolute temperature)

Match the following diseases with the causative organism and select the correct option

Column I		Column II
a	Typhoid	i	Wuchereria
b	Pneumonia	ii	Plasmodium
c	Filariasis	iii	Salmonella
d	Malaria	iv	Haemophilus

The Brewsters angle $i_b$ for an interface should be:

Goblet cells of alimentary canal are modified from

Bilaterally symmetrical and acoelomate animals are exemplified by :

Which of the following refer to correct example(s) of organisms which have evolved due to changes in environment brought about by anthropogenic action? 
(a) Darwin Finches of Galapagos islands. 
(b) Herbicide resistant weeds. 
(c) Drug resistant eukaryotes. 
(d) Man-created breeds of domesticated animals like dogs.

Which of the following statements are true for the phylum-Chordata? 
(a) In Urochordata notochord extends from head to tail and it is present throughout their life. 
(b) In Vertebrate notochord is present during the embryonic period only. 
(c) Central nervous system is dorsal and hollow. 
(d) Chordata is divided into 3 subphyla ; Hemichordata, Tunicata and Cephalochordata.

Cuboidal epithelium with brush border of microvilli is found in:

Dissolution of the synaptonemal complex occurs during:

Bt cotton variety that was developed by the introduction of toxin gene of Bacillus thuringiensis (Bt) is resistant to

Some dividing cells exit the cell cycle and enter vegetative inactive stage. This is called quiescent stage ($G_0$). This process occurs at the end of :

How many true breeding pea plant varieties did Mendel select as pairs, which were similar except in one character with contrasting traits ?

Experimental verification of the chromosomal theory of inheritance was done by:

Flippers of Penguins and Dolphins are examples of:

From his experiments. S.L.Miller produced amino acids by mixing the following in a closed flask

The total energy of an electron in the $n^{th}$ stationary orbit of the hydrogen atom can be obtained by

A force\( F=20+10y \)acts on a particle in \(y-\)direction where \(F\) is in newton and y in meter. Work done by this force to move the particle from \(y=0\) to \( y=1\) m is: 

A particle starting from rest, moves in a circle of radius 'r'. It attains a velocity of V0 m/s in the $n^{th}$ round. Its angular acceleration will be :-

A circuit when connected to an $AC$ source of $12\, V$ gives a current of $0.2\, A$. The same circuit when connected to a $DC$ source of $12\, V$, gives a current of $0.4 \,A$. The circuit is

The density of 2 M aqueous solution of NaOH is 1.28 g/cm$^3$. The molality of the solution is [Given that molecular mass of NaOH = 40 g mol$^{-1}$]