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MHT-CET 2023 (11 May Shift 2), Paper II, Physics & Chemistry question paper

100 questions · 100 marks · 90 minutes · +1 per correct answer, no negative marking

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Physics

50 questions

  1. 1
    An electric dipole will have minimum potential energy when it subtends an angle

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  2. 2
    A particle is performing S.H.M. about its mean position with an amplitude 'a' and periodic time 'T'. The speed of the particle when its displacement from mean position is a3\frac{a}{\sqrt{3}} will be

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  3. 3
    In case of photoelectric effect, the graph of measured stopping potential V0V_0 against frequency 'v' of incident light is a straight line. The slope of this line multiplied by the charge of electron (e) gives

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  4. 4
    Critical angle of light passing from glass to air is minimum for wavelength of

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  5. 5
    What is the pressure of hydrogen in a cylinder of volume 10 litre if its total energy of translation is 7.5×1037.5\times10^3 J?

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  6. 6
    A particle 'A' has charge '+q' and a particle 'B' has charge '+4q'. Each has same mass 'm'. When they are allowed to fall from rest through the same potential, the ratio of their speeds will become (particle A to particle B)

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  7. 7
    When 100 V d.c. is applied across a solenoid, a current of 1 A flows in it. When 100 V a.c. is applied across it, the current drops to 0.5 A. If the frequency is 50 Hz, the impedance and inductance is

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  8. 8
    When n-p-n junction transistor is used as an amplifier in common emitter mode,

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  9. 9
    An infinitely long straight conductor carrying current 'I' is bent in a shape as shown in figure. The radius of the circular part of loop is 'r'. The magnetic induction at the centre 'C' is (μ0=\mu_0 = permeability of free space)

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  10. 10
    A piece of wood has length, breadth and height, 'a', 'b' and 'c' respectively. Its relative density is 'd'. It is floating in water such that the side 'a' is vertical. It is pushed down a little and released. The time period of S.H.M. executed by it is (g=g = acceleration due to gravity)

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  11. 11
    Assuming that junction diode is ideal, the current in arrangement shown in figure

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  12. 12
    Four thin metal rods each of mass 'M' and length 'L', are welded end to end to form a square. The moment of inertia of the system about an axis passing through the centre of the square and perpendicular to its plane is

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  13. 13
    Considering interference between two sources of intensities 'I' and '4I', the intensity at a point where the phase difference is π\pi is (cos⁡π=−1)(\cos\pi = -1)

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  14. 14
    If number of turns per unit length in a solenoid is tripled, the self-inductance of solenoid will

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  15. 15
    A sphere 'A' of radius 'R' has a charge 'Q' on it. The field at point B outside the sphere is 'E'. Now another sphere of radius '2R' having a charge '–2Q' is placed at B. The total field at the point midway between A and B due to both the spheres is

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  16. 16
    Two rain drops of same radius are falling through air each with a steady speed of 5 cm/s. If the drops coalesce, the new steady velocity of big drop will be

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  17. 17
    Which of the following statements is NOT true?

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  18. 18
    In a hydrogen atom in its ground state, the first Bohr orbit has radius r1r_1. The electron's orbital speed becomes one-third when the atom is raised to one of its excited states. The radius of the orbit in that excited state is

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  19. 19
    'N' molecules of gas A, each having mass 'm' and '2N' molecules of gas B, each of mass '2m' are contained in the same vessel which is at constant temperature 'T'. The mean square velocity of B is V2V^2 and mean square of x-component of A is ω2\omega^2. The value of ω2V2\frac{\omega^2}{V^2} is

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  20. 20
    For a satellite moving in an orbit around the earth at height 'h' the ratio of kinetic energy to potential energy is

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  21. 21
    The number of turns in the primary of a transformer are 1000 and in secondary 3000. If 80 V a.c. is applied to the primary, the potential difference per turn of the secondary coil is

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  22. 22
    A current carrying circular loop of radius 'R' and current carrying long straight wire are placed in the same plane. The current through circular loop and long straight wire are 'ICI_C' and 'IwI_w' respectively. The perpendicular distance between centre of the circular loop and wire is 'd'. The magnetic field at the centre of the loop will be zero when separation 'd' is equal to

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  23. 23
    All the springs in fig. (a), (b) and (c) are identical, each having force constant K. Mass attached to each system is 'm'. If Ta,TbT_a, T_b and TcT_c are the time periods of oscillations of the three systems respectively, then

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  24. 24
    The point charges +q,−q,−q,+q,+Q+q,-q,-q,+q,+Q and −q-q are placed at the vertices of a regular hexagon ABCDEF as shown in figure. The electric field at the centre of hexagon 'O' due to the five charges at A, B, C, D and F is thrice the electric field at centre 'O' due to charge +Q+Q at E alone. The value of Q is

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  25. 25
    A 1 μF1\ \mu\text{F} capacitor is charged to 50 V and is then discharged through 10 mH inductor of negligible resistance. The maximum current in the inductor is

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  26. 26
    The phase difference between two waves giving rise to dark fringe in Young's double slit experiment is (n is the integer)

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  27. 27
    A capillary tube stands with its lower end dipped into liquid for which the angle of contact is 90∘90^\circ. The liquid will

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  28. 28
    A body is projected in vertically upward direction from the surface of the earth of radius 'R' into space with velocity 'nVe' (n<1)(n<1). The maximum height from the surface of earth to which a body can reach is

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  29. 29
    The angular momentum of the electron in the third Bohr orbit of hydrogen atom is 'l'. Its angular momentum in the fourth Bohr orbit is

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  30. 30
    A battery of 6 V is connected to the ends of uniform wire 3 m long and of resistance 100 Ω100\ \Omega. The difference of potential between two points 50 cm apart on the wire is

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  31. 31
    The p-V diagram for a fixed mass of an ideal gas undergoing cyclic process is as shown in figure. AB represents isothermal process and CA represents adiabatic process. Which one of the following graphs represents the p-T diagram of this cyclic process?

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  32. 32
    A vessel is filled with two different liquids which do not mix. One is 40 cm deep and has refractive index 1.6 and other is 30 cm deep and has refractive index 1.5. The apparent depth of vessel when viewed normally is

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  33. 33
    In LCR resonant circuit, the current and voltage have phase difference

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  34. 34
    How is the interference pattern affected when violet light replaces sodium light?

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  35. 35
    A lead sphere of mass 'm' falls in viscous liquid with terminal velocity V0V_0. Another lead sphere of mass '8m' but of same material will fall through the same liquid with terminal velocity

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  36. 36
    Two cylinders A and B fitted with piston contain equal amount of an ideal diatomic gas at temperature 'T' K. The piston of cylinder A is free to move while that of B is held fixed. The same amount of heat is given to the gas in each cylinder. If the rise temperature of the gas in A is 'dTAdT_A', then the rise in temperature of the gas in cylinder B is (γ=CPCV)\left(\gamma=\frac{C_P}{C_V}\right)

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  37. 37
    A photoelectric surface is illuminated successively by monochromatic light of wavelength λ\lambda and (λ/3)(\lambda/3). If the maximum kinetic energy of the emitted photoelectrons in the second case is 4 times that in the first case, the work function of the surface of the material is (h=h = Planck's constant, c=c = speed of light)

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  38. 38
    A metal rod having coefficient of linear expansion 2×10−5/°C2\times10^{-5}/°C is 0.75 m long at 45°C45°C. When the temperature rises to 65°C65°C, the increase in length of the rod will be

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  39. 39
    If the two waves of same amplitude, having frequencies 340 Hz and 335 Hz, are moving in same direction, then the time interval between two successive maxima formed (in second) is

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  40. 40
    A closely wound coil of 100 turns and of cross-section 1 cm21\ \text{cm}^2 has coefficient of self inductance 1 mH. The magnetic induction at the centre of the core of a coil when a current of 2 A flows in it, will be (in Wb/m2\text{Wb/m}^2)

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  41. 41
    A particle of mass 'm' is performing uniform circular motion along a circular path of radius 'r'. Its angular momentum about the axis passing through the centre and perpendicular to the plane is 'L'. The kinetic energy of the particle is

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  42. 42
    Kirchhoff's second law is based on the law of conservation of

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  43. 43
    A moving body with mass 'm1m_1' strikes a stationary mass 'm2m_2'. What should be the ratio m1m2\frac{m_1}{m_2} so as to decrease the velocity of first by (1.5) times the velocity after the collision?

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  44. 44
    The frequency of the third overtone of a pipe of length 'LcL_c', closed at one end is same as the frequency of the sixth overtone of a pipe of length 'L0L_0', open at both ends. Then the ratio Lc:L0L_c:L_0 is

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  45. 45
    For the following digital logic circuit, the correct truth-table is

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  46. 46
    The ratio of the velocity of sound in hydrogen gas (γ=75)\left(\gamma=\frac{7}{5}\right) to that in helium gas (γ=53)\left(\gamma=\frac{5}{3}\right) at the same temperature is

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  47. 47
    Moment of inertia of a disc about an axis passing through its centre and perpendicular to its plane is 'I'. The ratio of moment of inertia about a parallel axis tangential to its rim to passing through a point midway between the centre and the rim is

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  48. 48
    Two cars start from a point at the same time in a straight line and their positions are represented by x1(t)=at+bt2x_1(t) = at+bt^2 and x2(t)=Ft−t2x_2(t) = Ft-t^2. At what time do the cars have the same velocity?

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  49. 49
    Magnetic field at the centre of a circular loop of area 'A' is 'B'. The magnetic moment of the loop will be

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  50. 50
    A wire of length 'L' and linear density 'm' is stretched between two rigid supports with tension 'T'. It is observed that wire resonates in the Pth harmonic at a frequency of 320 Hz and resonates again at next higher frequency of 400 Hz. The value of 'p' is

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Chemistry

50 questions

  1. 51
    If instantaneous rate of reaction is given as −1ad[A]dt=−1bd[B]dt=1cd[C]dt=1dd[D]dt-\frac{1}{a}\frac{d[A]}{dt} = -\frac{1}{b}\frac{d[B]}{dt} = \frac{1}{c}\frac{d[C]}{dt} = \frac{1}{d}\frac{d[D]}{dt}, the reaction is represented as,

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  2. 52
    Which among the following is a correct decreasing order of thermodynamic stability of the complexes?

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  3. 53
    Identify the process from following such that volume of system remains constant.

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  4. 54
    Identify the instrument used to find crystal structure from following:

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  5. 55
    In a solution, mole fraction of solute is 0.2, when lowering in vapour pressure is 10 mm Hg. To get lowering of vapour pressure of 20 mm Hg, mole fraction of solute in solution is

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  6. 56
    Which among the following is an example of one-dimensional nanostructure?

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  7. 57
    Which among the following is an example of emulsion?

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  8. 58
    Which of the following solutions will not show flow of solvent in either direction when separated by semipermeable membrane?

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  9. 59
    Identify the correct stability order of following alkenes. (I) (CH3)2C=C(CH3)2(CH_3)_2C=C(CH_3)_2 (II) (CH3)2C=CH2(CH_3)_2C=CH_2 (III) (CH3)2C=CHCH3(CH_3)_2C=CHCH_3

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  10. 60
    Which of the following element in +1 oxidation state has largest ionic radius?

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  11. 61
    Identify the product in following reaction. Pent-3-enenitrile →AlH(i-Bu)2/H3O+\xrightarrow{\text{AlH(i-Bu)}_2 / \text{H}_3\text{O}^+} product

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  12. 62
    Which of the following molecules has zero dipole moment?

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  13. 63
    What is the concentration of an electrolyte solution to have molar conductivity of 101 Ω−1 cm2 mol−1101\ \Omega^{-1}\ \text{cm}^2\ \text{mol}^{-1} and conductivity of 1.01×10−2 Ω−1 cm−11.01\times10^{-2}\ \Omega^{-1}\ \text{cm}^{-1} at 298 K?

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  14. 64
    What is IUPAC name of following compound?

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  15. 65
    Which element from following is the last element of 5d-transition series?

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  16. 66
    The solubility of CaCO3\text{CaCO}_3 is 7×10−5 mol dm−37\times10^{-5}\ \text{mol dm}^{-3} at 25°C. What is its solubility product at same temperature?

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  17. 67
    Which of the following compounds is NOT obtained at any stage of Gabriel phthalimide synthesis?

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  18. 68
    The solution containing 18 g dm−3^{-3} glucose (molar mass 180) in water and another containing 6 g dm−3^{-3} of solute A in water boils at same temperature. What is molar mass of A?

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  19. 69
    Which among following polymers is used to manufacture water pipes?

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  20. 70
    Identify the correct pair of molecule and the heteroatom present in it respectively from following:

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  21. 71
    What type of unit cell from following is common to all seven types of crystal systems?

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  22. 72
    If P1P_1 partial pressure of a gas and x1x_1 is its mole fraction in a mixture, then correct relation between P1P_1 and x1x_1 is

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  23. 73
    Which among the following is benzylic halide?

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  24. 74
    Which from following statements is NOT correct regarding Bohr model?

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  25. 75
    Cell constant of a conductivity cell is 0.9 cm−1^{-1} and resistance shown by AgNO3_3 solution is 6530 ohm. What is the conductivity of AgNO3_3 solution?

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  26. 76
    Which among the following minerals contains radioactive element in it?

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  27. 77
    The common name of Benzene-1,2,3-triol is

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  28. 78
    Rate law for a reaction is r=k[A]2[B]r = k[A]^2[B]. If rate constant is 6.25 mol−2dm6s−16.25\ \text{mol}^{-2}\text{dm}^6\text{s}^{-1}, what is the rate of reaction when [A]=1 mol dm−3[A] = 1\ \text{mol dm}^{-3} and [B]=0.2 mol dm−3[B] = 0.2\ \text{mol dm}^{-3}?

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  29. 79
    Which element from following is NOT considered as transition element on the basis of electronic configuration?

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  30. 80
    Two moles of an ideal gas are compressed isothermally and reversibly from 40 L to 20 L at 300 K. What is the work done? R=8.314 J K−1 mol−1R = 8.314\ \text{J K}^{-1}\ \text{mol}^{-1}

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  31. 81
    Identify the product 'A' obtained in following reaction. N-alkyl phthalimide →NaOH(aq)\xrightarrow{\text{NaOH(aq)}} Sodium phthalate + A

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  32. 82
    Which among the following is the conjugate base of HClO4\text{HClO}_4?

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  33. 83
    Which from following polymers contain -CO-NH- linkage in it?

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  34. 84
    Identify the product of ozonolysis of but-2-ene from following:

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  35. 85
    What is atomic radius of an element if it crystallises in BCC structure with edge length of unit cell 287 pm?

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  36. 86
    Identify the product 'B' in the following reaction sequence. C2H5Br→Mg/dry etherA→CH3OHB\text{C}_2\text{H}_5\text{Br} \xrightarrow{\text{Mg/dry ether}} A \xrightarrow{\text{CH}_3\text{OH}} B

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  37. 87
    Identify the correct statement for following reaction. 3Mg+N2⟶Mg3N23\text{Mg} + \text{N}_2 \longrightarrow \text{Mg}_3\text{N}_2

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  38. 88
    Which of the following cannot be used as standard solution for determination of cell constant of conductivity cell?

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  39. 89
    Which from following reagents is used in the conversion of phenol to picric acid?

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  40. 90
    Which element from following has largest atomic size as compared to other three?

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  41. 91
    Calculate the enthalpy change when 12 g carbon react with sufficient hydrogen to form methane. If enthalpy of formation of methane is −75 kJ mol−1-75\ \text{kJ mol}^{-1}.

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  42. 92
    What type of ligand is the oxalate ion?

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  43. 93
    What is pH of a centimolar solution of H2SO4\text{H}_2\text{SO}_4?

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  44. 94
    What is the time needed to reduce the initial concentration of reactant to 10% in a first order reaction if its half life time is 10 minutes?

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  45. 95
    Which from following proteins acts as an enzyme to break protein to α\alpha-amino acid?

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  46. 96
    Identify the orbital having highest energy from following:

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  47. 97
    A metal crystallises in bcc structure with edge length 4×10−84\times10^{-8} cm. If density of unit cell is 10 g cm−310\ \text{g cm}^{-3}. What is its molar mass?

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  48. 98
    Identify product 'B' in following reaction. Benzonitrile →C6H5MgBr/dry etherA→H3O+B\xrightarrow{\text{C}_6\text{H}_5\text{MgBr/dry ether}} A \xrightarrow{\text{H}_3\text{O}^+} B

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  49. 99
    How many molecules of carbon dioxide are formed when 0.6 g carbon is burnt in air?

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  50. 100
    Identify product 'B' in the following reaction. Sodium phenoxide →CO2, 398K, 6 atmA→H3O+B\xrightarrow{\text{CO}_2,\ 398\text{K},\ 6\ \text{atm}} A \xrightarrow{\text{H}_3\text{O}^+} B

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