NEET 2011 Question Paper with Solutions

A particle of mass m is thrown upwards from the surface of the 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

A mass of diatomic gas (\(\gamma=1.4\)) at a pressure of 2 atmospheres is compressed adiabatically so that its temperature rises from \(27^\circ C\) to \(927^\circ C\). The pressure of the gas in the final state is

A small mass attached to a string rotates on a frictionless table top as shown. If the tension in 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

A mass m moving horizontally (along the x-axis) with velocity v collides and sticks to a mass of 3m moving vertically upwards (along the y-axis) with velocity 2v. The final velocity of the combination is

A conveyor belt is moving at a constant speed of \(2\ \text{ms}^{-1}\). 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

According to the Bohr theory, which of the following transitions in the hydrogen atom will give rise to the least energetic photon?

Which of the following structures is the most preferred and hence of lowest energy for \(SO_3\)?

Which has the maximum number of molecules among the following?

Consider the following processes: \(\Delta H\ (\text{kJ/mol})\) \(1/2A\rightarrow B\) +150; \(3B\rightarrow 2C+D\) -125; \(E+A\rightarrow 2D\) +350. For \(B+D\rightarrow E+2C\), \(\Delta H\) will be

Match List-I with List-II for the compositions of substances and select the correct answer using the code given above. List-I (Substances): (A) Plaster of Paris (B) Epsomite (C) Kieserite (D) Gypsum. List-II (Composition): (i) \(CaSO_4\cdot2H_2O\) (ii) \(CaSO_4\cdot\frac{1}{2}H_2O\) (iii) \(MgSO_4\cdot7H_2O\) (iv) \(MgSO_4\cdot H_2O\) (v) \(CaSO_4\)

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

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 prisms produces dispersion without deviation. The angle of the second prism should be

In the following figure, the diodes which are forward biased, are

A coil has resistance 30 ohm and inductive reactance 20 ohm at 50 Hz frequency. If an ac source, of 200 volt, 100 Hz, is connected across the coil, the current in the coil will be

The r.m.s. value of potential difference V shown in the figure is

What of the following compounds is most basic?

The order of reactivity of phenyl magnesium bromide (PhMgBr) with the following compounds:

The rate of the reaction: \(2N_2O_5\rightarrow 4NO_2+O_2\) can be written in three ways. \(-\frac{d[N_2O_5]}{dt}=k[N_2O_5]\), \(\frac{d[NO_2]}{dt}=k'[N_2O_5]\), \(\frac{d[O_2]}{dt}=k''[N_2O_5]\). The relationship between k and k' and between k and k'' are

The half-life of a substance in a certain enzyme-catalysed reaction is 138 s. The time required for the concentration of the substance to fall from \(1.28\ \text{mg L}^{-1}\) to \(0.04\ \text{mg L}^{-1}\) is

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.