Solved papers for NEET AIPMT SOLVED PAPER MAINS 2011
done AIPMT SOLVED PAPER MAINS 2011 Total Questions - 120
question_answer1) Two identical piano wires kept under the same tension T have a fundamental frequency of 600 Hz. The fractional increase in the tension of one of the wires which will lead to occurrence of 6 beat/s when both the wires oscillate together would be
question_answer3) The threshold frequency for a photo-sensitive metal is 3.3 x1014 Hz. If light of frequency 8.2 x 1014 Hz is incident on this metal, the cut-off voltage for the photo-electric emission is nearly
question_answer4) A galvanometer of resistance, G is shunted by a resistance S ohm. To keep the main current in the circuit unchanged, the resistance to be put in series with the galvanometer is
question_answer5) A square loop, carrying a steady current \[\text{I}\], is placed in a horizontal plane near a long straight conductor carrying a steady current \[{{\text{I}}_{\text{1}}}\]at a distance d from the conductor as shown in figure. The loop will experience
A)
a net repulsive force away from the conductor
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B)
a net torque acting upward perpendicular to the horizontal plane
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C)
a net torque acting downward normal to the horizontal plane
question_answer6) A thermocouple of negligible resistance, produces an emf of \[\text{40 }\!\!\mu\!\!\text{ V}{{\text{/}}^{\text{o}}}\text{C}\]in the linear range of temperature. A galvanometer of resistance \[10\,\Omega \]whose sensitivity is\[\text{1 }\!\!\mu\!\!\text{ A/div}\], is employed with the thermocouple. The smallest value of temperature difference that can be detected by the system will be
question_answer8) A coil has resistance \[30\,\Omega \] and inductive reactance \[20\,\Omega \]at 50 Hz frequency. If an AC source of 200 V, 100 Hz, is connected across the coil, the current in the coil will be
question_answer9) A particle of mass m is thrown upwards from the surface of die earth, with a velocity u. The mass and the radius of the earth are, respectively, M and R. G is gravitational constant and g is acceleration due to gravity on the surface of the earth. The minimum value of u so that the particle does not return back to earth, is
question_answer10) Pure Si at 500 K has equal number of electron \[({{n}_{e}})\] and hole \[({{n}_{h}})\] concentrations of \[1.5\times {{10}^{16}}{{m}^{-3}}\]. Doping by indium increases nh to \[4.5\times {{10}^{22}}{{m}^{-3}}\]. The doped semiconductor is of
A)
p-type with electron concentration \[{{n}_{e}}=5\times {{10}^{22}}\,{{m}^{-3}}\]
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B)
p-type with electron concentration \[{{n}_{e}}=2.5\times {{10}^{10}}\,{{m}^{-3}}\]
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C)
n-type with electron concentration \[{{n}_{e}}=2.5\times {{10}^{23}}\,{{m}^{-3}}\]
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D)
p-type having electron concentration \[{{n}_{e}}=5\times {{10}^{9}}\,{{m}^{-3}}\]
question_answer11) Charge q is uniformly spread on a thin ring of radius R. The ring rotates about its axis with a uniform frequency f Hz. The magnitude of magnetic induction at the centre of the ring is
question_answer12) A zener diode, having breakdown voltage equal to 15 V, is used in a voltage regulator circuit shown in figure. The current through the diode is
question_answer13) A particle covers half of its total distance with speed \[{{v}_{1}}\], and the rest half distance with speed \[{{v}_{2}}\], Its average speed during the complete journey is
question_answer14) The electric potential V at any point (.x, y, z), all in metres in space is given by V = 4x2 volt. The electric field at the point (1, 0, 2) in volt/metre is
question_answer15) A short bar magnet of magnetic moment \[0.4J\,{{T}^{-1}}\]is place in a uniform magnetic field of 0.16 T. The magnet is stable equilibrium when the potential energy is
question_answer16) A thin prism of angle \[15{}^\circ \] made of glass of refractive index \[{{\mu }_{1}}=1.5\] is combined with another prism of glass of refractive index \[{{\mu }_{2}}=1.75.\]The combination of the prism produces dispersion without deviation. The angle of the second prism should be
question_answer17) A conveyor belt is moving at a constant speed of 2 m/s. A box is gently dropped on it. The coefficient of friction between them is \[\mu =0.5.\]The distance that the box will move relative to belt before coming to rest on it taking \[g=10\,\,m{{s}^{-2}},\]is
question_answer18) A mass of diatomic gas (y = 1.4) at a pressure of 2 atm is compressed adiabatically so that its temperature rise from \[27{}^\circ \] C to\[927{}^\circ \text{ }C\]. The pressure of the gas is final state is
question_answer19) A mass m moving horizontally (along the x-axis) with velocity v collides and sticks to mass of 3m moving vertically upward (along the y-axis) with velocity 2v. The final velocity of the combination is
question_answer20) Two particle are oscillating along two close parallel straight lines side by side, with the same frequency and amplitudes. They pass each other, moving in opposite directions when their displacement is half of the amplitude. The mean positions of the two particles lie on a straight line perpendicular to the paths of the two particles. The phase difference is
question_answer21) A small mass attached to a string rotates on frictionless table top as shown. If the tension is the string is increased by pulling the string causing the radius of the circular motion to decrease by a factor of 2, the kinetic energy of the mass will
question_answer22) The density of material in CGS system of units is\[4g/c{{m}^{3}}\]. In a system of units in which unit of lengths is 10 cm and unit of mass is 100 g, the value of density of material will be'
question_answer23) An electron in the hydrogen atom jumps from excited state n to the ground state. The wavelength so emitted illuminates a photo-sensitive material having work function 2.75 eV. If the stopping potential of the photo-electron is 10 V, the value of n is
question_answer24) A particle of mass M is situated at the centre of spherical shell of mass and radius a. The magnitude of the gravitational potential at a point situated at \[\frac{a}{2}\] distance from the centre, will be
question_answer25) Two radioactive nuclei P and Q, in a given sample decay into a stable nucleous R. At time t = 0, number of P species are 4No and that of Q are \[{{N}_{0}}\] Half-life of P (for conversion to K) is 1 min where as that of Q is 2 min. Initially there are no nuclei of R present in the sample. When number of nuclei of P and Q are equal, the number of nuclei of R present in the sample would be
question_answer26) A projectile is fired at an angle of \[45{}^\circ \] with the horizontal. Elevation angle of the projectile at its highest point as seen from the point of projection is
question_answer27) Out of the following which one is not a possible energy for a photon to be emitted by hydrogen atom according to Bohr's atomic model?
question_answer29) A conversing beam of rays is incident on a diverging lens. Having passed through the lens the rays intersect at a point 15 cm from the lens on the opposite side. If the lens is removed the point where the rays meets will move 5 cm closer to the lens. The focal length of the lens is
question_answer30) Three charges, each + q, are placed at the comers of an isosceles triangle ABC of sides BE and AC, 2a. D and£ are the mid points of BE and CA. The work done in taking a charge Q from D to E is
question_answer34) The half-life of a substance in a certain enzyme-catalyses reaction is 138 s. The time required for the concentration of the substance to fall from 1.28 mg \[{{\text{L}}^{\text{-1}}}\] to 0.04 mg \[{{\text{L}}^{\text{-1}}}\] is
question_answer37) A 0.1 molal aqueous solution of a weak acid is 30% ionised. If \[{{K}_{f}}\] for water is\[1.86{}^\circ C/m\], the freezing point of the solution will be
question_answer38) The rate of reaction \[2{{N}_{2}}{{O}_{5}}\xrightarrow[{}]{{}}4N{{O}_{2}}+{{O}_{2}}\]can be written in three ways \[\frac{-d[{{N}_{2}}{{O}_{5}}]}{dt}=k[{{N}_{2}}{{O}_{5}}]\] \[\frac{d[NO_{7}^{2}]}{dt}=k'[{{N}_{2}}{{O}_{5}}]\]\[\frac{d[O_{2}^{{}}]}{dt}=k''[{{N}_{2}}{{O}_{5}}]\] The relationship between k and k' and between k?? and k'' are
question_answer48) A solution contains \[F{{e}^{2+}},F{{e}^{3+}}\]and \[{{\text{I}}^{-}}\] ions. This solution was treated with iodine at\[35{}^\circ C\]. \[E{}^\circ \] for \[F{{e}^{3+}}/F{{e}^{2+}}\]is + 0.77 V and \[E{}^\circ \] for \[{{\text{I}}_{\text{2}}}\text{/2}{{\text{I}}^{-}}=\text{0}\text{.536}\,\text{V}\text{.}\]The favorable redox reaction is
A)
\[{{\text{I}}_{\text{2}}}\] will be reduced to \[{{\text{I}}^{-}}\]
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B)
There will be no redox reaction
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C)
\[{{\text{I}}^{-}}\] will be oxidised to \[{{\text{I}}_{\text{2}}}\]
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D)
\[\text{F}{{\text{e}}^{\text{2+}}}\]will be oxidised to \[\text{F}{{\text{e}}^{\text{3+}}}\]
question_answer49) What is the value of electron gain enthalpy of \[\text{N}{{\text{a}}^{\text{+}}}\]if \[\text{I}{{\text{F}}_{\text{1}}}\]of Na = 5.1 eV?
question_answer51) In qualitative analysis, the metals of group I can be separated from other ions by precipitating them as chloride salts. A solution initially contains \[A{{g}^{+}}\] and \[P{{b}^{2+}}\] at a concentration of 0.10 M. Aqueous HCl is added to this solution until the \[C{{l}^{-}}\] concentration is 0.10 M. What will be the concentration of \[A{{g}^{+}}\] and \[P{{b}^{2+}}\] be at equilibrium? (\[{{K}_{sp}}\]for \[AgCl=1.8\times {{10}^{-10}},\,\,{{K}_{sp}}\] for\[\text{PbC}{{\text{l}}_{\text{2}}}\text{=1}\text{.7 }\!\!\times\!\!\text{ 1}{{\text{0}}^{\text{-5}}}\])
question_answer52) A bubble of air is underwater at temperature \[15{}^\circ C\] and the pressure 1.5 bar. If the bubble rises to the surface where the temperature is \[25{}^\circ C\] and the pressure is 1.0 bar, what will happen to the volume of the bubble?
question_answer54) The pairs of species of oxygen and their magnetic behaviors are noted below. Which of the following presents the correct description?
question_answer57) 200 mL of an aqueous solution of a protein contains its 1.26 g. The osmotic pressure of this solution at 300 K is found to be \[2.57\times {{10}^{-3}}\] bar. The molar mass of protein will be \[(R=0.083\,\,L\,\,bar\,\,mo{{l}^{-1}})\]
question_answer59) The following reactions take place in the blast furnace in the preparation of impure iron. Identify the reaction pertaining to the formation of the slag.
question_answer60) An organic compound 'A' on treatment with \[N{{H}_{3}}\] gives 'B' which on heating gives 'C' , 'C' when treated with \[B{{r}_{2}}\] in the presence of KOH produces ethylamine. Compound 'A' is
question_answer73) The figure below shows the structure of a mitochondrion with its four parts labelled (A), (B), (C) and (D). Select the part correctly matched with its function.
A)
D-Outer membrane-gives-rise to inner membrane by splitting
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B)
B-Inner membrane-forms infolding called cristae
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C)
C-Cristae-possess single circular DNA molecule and ribosomes
question_answer74) Read the following statement having two blanks (1 and 2). A drug used for...... (1)...... patients is obtained from a species of the organism...... (2)....... The one correct option for the two blanks is.
question_answer90) Consider the following four statements (I-IV) related to the common frog Rana tigrina, and select the correct option stating which ones are true (T) and which ones are false (F).
I. On dry land it would die due to lack of \[{{O}_{2}}\]its mouth is forcibly kept closed for a few days.
II. It has four-chambered heart.
III. On day land it turns uricotelic from ureotelic.
IV. Its life-history is carried out in pond water.
question_answer92) Given below is the ECG or a normal human. Which one of its components is human, which one of its components is correctly interpreted below.
A)
complex QRS-One complete pulse
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B)
peak T-Initiation of total cardiac contraction
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C)
peak P and peak R together-systolic and diastolic blood pressures
question_answer105) The figure shows four animals [A], [B], [C], [D]. Select the correct answer with respect to a common characteristics of two these animals.
question_answer116) Three of the following pairs of the human skeletal parts are correctly matched with their respective inclusive skeletal category and one pair is not matched. Identify the non-matching pair.