List of top Questions asked in MHT CET- 2025

Which from following is a soft metal?

Identify product A in following reaction.

\[ \mathrm{C}_6 \mathrm{H}_5 \stackrel{+}{\mathrm{N}}_2 \mathrm{Cl}^{-} \xrightarrow{\mathrm{C}_2 \mathrm{H}_5 \mathrm{OH}} \mathrm{~A}+\mathrm{N}_2+\mathrm{CH}_3 \mathrm{CHO}+\mathrm{HCl} \]

Which among the following is vinylic halide?

Which of the following is Lewis base?

Which from following compounds the thermocol is obtained?

Three polarised sheets are co-axially placed. Pass axis of polaroids 2 and 3 make \(30^{\circ}\) and \(90^{\circ}\) with pass axis of polaroid sheet. If \(\mathrm{I}_0\) is the intensity of unpolarised light entering sheet 1 , the intensity of the emergent light through sheet 3 is

\[ \left(\cos 30^{\circ}=\sqrt{3} / 2, \cos 90^{\circ}=0, \cos 60^{\circ}=1 / 2\right) \]

The phenomenon, which is not due to total internal reflection is

Two cylinders A and B fitted with pistons contain equal amount of an ideal rigid diatomic gas at 303 K . The piston of cylinder \(A\) is free to move and that of cylinder B is held fixed. The same amount heat is given to the gas in each cylinder. If the rise in temperature of the gas in cylinder B is 49 K , then the rise in temperature of the gas in \(A\) is

\[ \text { The value of current I in the given circuit is } \]

The voltage between the plates of a parallel plate capacitor of capacity \(1 \mu \mathrm{~F}\) is changing at the rate of \(4 \mathrm{~V} / \mathrm{s}\). the displacement current in the capacitor is

In an n-p-n transistor amplifier, the collector current is 8 mA . If \(80 \%\) of the electrons from the emitter reach the collector, then ( \(\alpha\) and \(\beta\) are current ratios)

Three spheres, each of mass ' \(m\) ' and radius ' \(r\) ' are placed as shown in figure. Consider an axis \(\mathrm{YY}^{\prime}\), which is touching two spheres and passing through the diameter of third sphere. The moment of inertia of the system consisting of these three spheres about \(\mathrm{YY}^{\prime}\) axis is

An electric dipole having each charge of magnitude \(2 \mu \mathrm{C}\) is placed in an electric field of intensity \(8 \times 10^{+4} \mathrm{~N} / \mathrm{C}\). If the maximum torque acting on the dipole is \(4 \times 10^{-3} \mathrm{~N}-\mathrm{m}\), the length of the dipole is

Two sources of sound are emitting progressive waves \(\mathrm{y}_1=4 \sin 710 \pi \mathrm{t}\) and \(\mathrm{y}_2=3 \sin 702 \pi \mathrm{t}\). The sources are placed close to each other. The number of beats heard per second and intensity ratio between waxing and waning are respectively

An engine operating between temperatures \(T_1\) and \(T_2\) has efficiency \(\frac{1}{5}\). When \(T_2\) is lowered by 45 K , its efficiency becomes \(\frac{1}{2}\). Temperatures \(T_1\) and \(T_2\) are respectively

To manufacture a solenoid of length ' \(l\) ' and inductance ' \(L\) ', the length of the thin wire required is (Diameter of the solenoid is very less than length, \(\mu_0=\) permeability of free space)

An observer on sea-coast counts 45 waves in one minute. If the wavelength of the waves is 7 m , then the velocity of the waves will be

A simple pendulum has time period ' \(\mathrm{T}_1\) '. The point of suspension is now moved upward according to equation \(\mathrm{y}=\mathrm{kt}^2\) where \(\mathrm{k}=1 \mathrm{~m} / \mathrm{s}^2\). If new time period is ' \(\mathrm{T}_2\) ' then \(\mathrm{T}_1^2 / \mathrm{T}_2^2\) will be ( \(\mathrm{g}=10 \mathrm{~m} / \mathrm{s}^2\) )

The electric charges ' \(+2 q\) ', ' \(+2 q\) ', ' \(-2 q\) ' and ' \(-2 q\) ' are placed at the corners of square of side ' 2 L ' as shown in figure. The electric potential at point 'A', midway between the two charges ' \(+2 q\) ' and ' \(+2 q\) ' is

( \(\varepsilon_0=\) permittivity of free space)

Two circular loops P and Q of radii ' r ' and ' nr ' are made respectively from a uniform wire. Moment of inertia of loop Q about its axis is 4 times that of loop \(P\) about its axis. The value of \(n\) is

Photoelectric emission is observed from a metallic surface for frequencies \(v_1\) and \(v_2\) of the incident light rays \(\left(v_1>v_2\right)\). If the maximum values of kinetic energy of the photoelectrons emitted in the two cases are in the ratio of \(1: \mathrm{k}\), then the threshold frequency of metallic surface is

An incompressible fluid flows steadily through a cylindrical pipe having radius R at point A and \(\left(\frac{\mathrm{R}}{3}\right)\) at point B further along the direction of flow of liquid. If the velocity at point A is ' V ' then that at point B is

Two radioactive materials \(A\) and \(B\) having decay constant ' \(7 \lambda\) ' and ' \(\lambda\) ' respectively, initially have same number of nuclei. The time taken to have the ratio of number of nuclei of material B to that of A as ' e ' is