MHT CET (PCB) 2025 9th April Morning Shift | MHT CET (Biology) Year Wise Previous Years Questions

Biology

Chemistry

Physics

1. When forward bias is applied to a p-n junction, then the potential barrier and the width of the depletion region respect 2. Four solid spheres each of mass ' $m$ ' and radius ' $r$ ' are arranged as shown in the figure. The moment of inertia of 3. A wave is travelling in the negative x direction having displacement 3 cm along Y direction, wavelength $2 \pi \mathrm{~ 4. A straight wire of mass ' M ' and length 2 m is placed in a magnetic field of 2 T which is acting perpendicular to the l 5. A photon and an electron have equal energy ' $E$ '. The ratio of wavelength of photon to wavelength of electron is propo 6. A passenger is sitting in a train which is moving fast. The engine blows a whistle of frequency ' n '. If the apparent f 7. If the shape of the liquid surface is curved, then the 8. ' n ' polarising sheets are arranged such that each makes an angle $45^{\circ}$ with the proceeding sheet. An unpolarise 9. An alternating voltage $\mathrm{V}=100 \sqrt{2} \sin (50 \mathrm{t})$ is connected to $2 \mu \mathrm{~F}$ capacitor thro 10. A gas at $800^{\circ} \mathrm{C}$ is cooled until both its pressure and volume are halved. The final temperature of the 11. When the r.m.s. velocity of a gas is denoted by ' V ' and temperature of the gas by T , which of the following relations 12. An inductor of 0.5 mH , capacitor of $20 \mu \mathrm{~F}$ and resistance of $20 \Omega$ are connected in series with a 2 13. A particle vibrating simple harmonically has an acceleration of $16 \mathrm{~cm} / \mathrm{s}^2$, when it is at a distan 14. Two inductors of 88 mH each are joined in parallel. The current passing through this combination is 4 A . The energy sto 15. In a projectile motion shown in figure, which one of the following statements is NOT CORRECT? 16. A string of length $L$ is fixed at one end and carries a mass m at the other end. The string makes $\frac{3}{\pi}$ revol 17. When three capacitors of capacitances ' C ', ' 2 C '? and ' 3 C ' are connected in series. The potential difference appl 18. In the spectrum of hydrogen atom the ratio of the longest wavelength in the Balmer series to the longest wavelength in t 19. A spherical liquid drop of radius R is divided into 64 equal droplets. If surface tension is $T$ then the work done in t 20. A lens of power +5 D is put in contact with a lens of power -3 D . The combination will behave like a 21. A glass capillary of radius 0.35 mm is inclined at $60^{\circ}$ with the vertical in water. The length of water column i 22. In a given circuit, AB is a uniform potentiometer wire. If the value of resistance ' $R$ ' is slightly increased, the ba 23. In common emitter configuration, $\beta, \mathrm{R}_{\mathrm{L}}$ and r are the a.c. current gain, load resistance and t 24. A rigid body weighs 25 gram and has a measured volume of $5 \mathrm{~cm}^3$. The possible error in the measurement of ma 25. The average kinetic energy of a molecule of the gas is 26. In an a.c. circuit $I=50 \sin 100 \pi t$. The time required for the current to achieve its peak value will be 27. The average velocity of a particle performing S.H.M. in one complete vibration is ( $\mathrm{A}=$ amplitude of S.H.M., $ 28. The range of voltmeter of resistance $300 \Omega$ is 5 V . The resistance required to be connected to convert it into an 29. The value of acceleration due to gravity (g) becomes $\left(\frac{g}{3}\right)$ at height ' $h$ ' above the earth's surf 30. A bicycle wheel of diameter ' $D$ ' has ' $N$ ' number of spokes. Wheel is rotating at the rate of ' $x$ ' revolutions p 31. Four thin rods of same mass M and same length L form a square as shown in figure. Moment of inertia of this system about 32. Two spherical black bodies of radius $\mathrm{R}_1$ and $\mathrm{R}_2$ with surface temperatures $\mathrm{T}_1$ and $\ma 33. A simple pendulum has mass 2 gram and charge $2 \mu \mathrm{C}$. In a uniform horizontal electric field of intensity $10 34. A mass ' $M$ ' is suspended from a spring of negligible mass. The spring is pulled a little and then released so that th 35. The energy of a photon is equal to the kinetic energy of proton. If $\lambda_1$ is the de-Broglie wavelength of a proton 36. In an adiabatic change, the pressure and temperature of a diatomic gas are related as $\mathrm{P} \propto \mathrm{T}^{\m 37. If $|\vec{A} \times \vec{B}|=\sqrt{3}(\vec{A} \cdot \vec{B})$ then the value of $|\vec{A}+\vec{B}|$ is $\left(\tan 60^{\ 38. In an interference experiment, the phase difference between the waves reaching a first dark point is 39. The magnetic field at the centre of a current carrying circular coil of area ' $A$ ' is ' $B$ '. The magnetic moment of 40. A capacitor of capacitance ' C ' is connected across a.c. source of voltage V as $\mathrm{V}=\mathrm{V}_0 \sin \omega \m 41. The series limit for the frequency of Balmer series is ' $\mathrm{v}_{\mathrm{B}}$ ', then the series limit frequency of 42. In Young's double slit experiment, the intensities at two points, for the path difference $\frac{\lambda}{4}$ and $\frac 43. A system is compressed adiabatically, then its temperature 44. A solenoid has core of a material with relative permeability 301 and its winding carries a current of 2 A . The number o 45. Two points on a travelling wave having frequency 500 Hz and velocity $300 \mathrm{~m} / \mathrm{s}$ are $30^{\circ}$ out 46. The charges are arranged at the four corners of square $A B C D$ of side ' $d$ ' as shown in figure. The work required t 47. If current ' i ' is passing through the solenoid of diameter ' $d$ ' having number of turns per unit length ' $n$ ', the 48. Force is applied to a body of mass 2 kg at rest on a frictionless horizontal surface as shown in the force against time 49. The order of (a) transformer (b) diode rectifier (c) filter (d) voltage regulator in a block diagram of simple rectifier 50. A simple harmonic progressive wave is given by $y=A \sin 2 \pi\left(n t-\frac{x}{\lambda}\right)$. If the wave velocity

MHT CET (PCB) 2025 9th April Morning Shift

MCQ (Single Correct Answer)

-0

Identify an aldehyde used in margarine and food for its buttery odour.

Benzaldehyde

Butyraldehyde

Cinnamaldehyde

Oxaldehyde

MHT CET (PCB) 2025 9th April Morning Shift

MCQ (Single Correct Answer)

-0

Consider the reaction

$$ 3 \mathrm{I}_{(\mathrm{aq})}^{-}+\mathrm{S}_2 \mathrm{O}_{8(\mathrm{aq})}^{--} \longrightarrow \mathrm{I}_{3(\mathrm{aq})}^{-}+2 \mathrm{SO}_{4(\mathrm{aq})}^{2-} $$

rate of formation of $\mathrm{SO}_4^{2-}$ at a particular time is

$$ 2.2 \times 10^{-2} \mathrm{~mol} \mathrm{dm}^{-3} \mathrm{~s}^{-1} $$

What is the value of $\frac{d}{d t}\left[I_3^{-}\right]$?

$1.1 \times 10^{-2} \mathrm{~mol} \mathrm{dm}^{-3} \mathrm{~s}^{-1}$

$2.2 \times 10^{-2} \mathrm{~mol} \mathrm{dm}^{-3} \mathrm{~s}^{-1}$

$3.3 \times 10^{-2} \mathrm{~mol} \mathrm{dm}^{-3} \mathrm{~s}^{-1}$

$4.4 \times 10^{-2} \mathrm{~mol} \mathrm{dm}^{-3} \mathrm{~s}^{-1}$

MHT CET (PCB) 2025 9th April Morning Shift

MCQ (Single Correct Answer)

-0

Calculate the number of electrons required to reduce completely $0.1 \mathrm{~mol} \mathrm{Al}^{+3}$ ions from aqueous $\mathrm{Al}_2\left(\mathrm{SO}_4\right)_3$ solution.

$1.806 \times 10^{23}$

$3.011 \times 10^{22}$

$6.022 \times 10^{22}$

$3.011 \times 10^{23}$

MHT CET (PCB) 2025 9th April Morning Shift

MCQ (Single Correct Answer)

-0

Which of the following compounds has highest lattice energy?

CsF

NaF

RbF

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