List of top Questions asked in NEET (UG)

In the circuit shown in the figure, the input voltage $V_i$ is $20 \, V , V_{BE} = 0 $ and $V_{CE} = 0$ .The values of $I_B , I_C$ and $\beta$ are given by
In a $p-n$ junction diode, change in temperature due to heating
Which of the following gastric cells indirectly help in erythropoiesis ?
Which of the following terms describe human dentition ?
Stomata in grass leaf are
If the mass of the Sun were ten times smaller and the universal gravitational constant were ten times larger in magnitude, which of the following is not correct ?
A solid sphere is in rolling motion. In rolling motion a body possesses translational kinetic energy $(K_t)$ as well as rotational kinetic energy , $(K_r)$ simultaneously. The ratio $K_t : (K_t + K_r)$ for the sphere is
A solid sphere is rotating freely about its symmetry axis in free space. The radius of the sphere is increased keeping its mass same. Which of the following physical quantities would remain constant for the sphere ?
A body initially at rest and sliding along a frictionless track from a height $h$ (as shown in the figure) just completes a vertical circle of diameter $AB \,=\, D$. The height h is equal to
The correct statement regarding electrophile is :
The two nearest harmonics of a tube closed at one end and open at other end are 220 Hz and 260 Hz. What is the fundamental frequency of the system?
Two discs of same moment of inertia rotating about their regular axis passing through centre and perpendicular to the plane of disc with angular velocities ω1 and ω2. They are brought into contact face to face coinciding the axis of rotation. The expression for loss of energy during this process is
The acceleration due to gravity at a height 1 km above the earth is the same as at a depth d below the surface of earth. Then
The x and y coordinates of the particle at any time are x = 5t – 2t2 and y = 10t respectively, where x and y are in meters and t in seconds. The acceleration of the particle at t = 2 s is
Suppose the charge of a proton and an electron differ slightly. One of them is –e, the other is (e +△e). If the net of electrostatic force and gravitational force between two hydrogen atoms placed at a distance d (much greater than atomic size) apart is zero, then △e is of the order of [Given mass of hydrogen mh = 1.67 × 10–27 kg]
The ratio of wavelengths of the last line of Balmer series and the last line of Lyman series is
An arrangement of three parallel straight wires placed perpendicular to plane of paper carrying same current ‘I’ along the same direction is shown in Fig. Magnitude of force per unit length on the middle wire ‘B’ is given by
An arrangement of three parallel straight wires placed perpendicular to plane
Two blocks A and B of masses 3m and m respectively are connected by a massless and inextensible string. The whole system is suspended by a massless spring as shown in figure. The magnitudes of acceleration of A and B immediately after the string is cut, are respectively
wo blocks A and B of masses 3m and m respectively are connected by a massless
Match the following sexually transmitted diseases (Column - I) with their causative agent (Column - II) and select the correct option.
Column - IColumn- II
(a)Gonorrhea(i)HIV
(b)Syphilis(ii)Neisseria
(c)Genital Warts(iii)Treponema
(d)AIDS(iv)Human Papilloma virus
Capacitation occurs in
A disease caused by an autosomal primary non-disjunction is
Life cycle of Ectocarpus and Fucus respectively are
Out of 'X' pairs of ribs in humans only 'Y' pairs are true ribs. Select the option that correctly represents values of X and Y and provides their explanation :
Among the following characters, which one was not considered by Mendel in his experiments on pea?
Homozygous purelines in cattle can be obtained by