NEET 2013 Question Paper with Solutions

A uniform force of \((3\hat{i} + \hat{j})\) newton acts on a particle of mass 2 kg. Hence the particle is displaced from position \((2\hat{i} + \hat{k})\) metre to position \((4\hat{i} + 3\hat{j} - \hat{k})\) metre. The work done by the force on the particle is 13 J 15 J 9 J 6 J

During an adiabatic process the pressure of a gas is found to be proportional to the cube of its temperature. The ratio of \(\frac{C_p}{C_v}\) for the gas is 3/5 2/3 3/4 2

A body of mass 'm' is taken from the earth's surface to the height equal to twice the radius (R) of the earth. The change in potential energy of body will be 3mgR \(\frac{1}{3}mgR\) mg2R \(\frac{2}{3}mgR\)

An explosion breaks a rock into three parts in a horizontal plane. Two of them go off at right angles to each other. The first part of mass 1 kg moves with a speed of \(12\ \text{m s}^{-1}\) and the second part of mass 2 kg moves with \(8\ \text{m s}^{-1}\) speed. If the third part flies off with \(4\ \text{m s}^{-1}\) speed then its mass is: 7 kg 17 kg 3 kg 5 kg

If an experiment four quantities a b c and d are measured with percentage error 1%0.02 3% and 4% respectively. Quantity P is calculated as follows \(P = \frac{a^3b^2}{cd}\) % error in P is 7% 4% 14% 10%

Among the following ethers which one will produce methyl alcohol on treatment with hot concentrated HI?

Structure of the compound whose IUPAC name is 3-Ethyl-2-hydroxy-4-methylhex-3-en-5-ynoic acid is

The value of Planck's constant is \(6.63 \times 10^{-34}\ \text{J s}\). The speed of light is \(3 \times 10^{17}\ \text{nm s}^{-1}\). Which value is closest to the wavelength in nanometer of a quantum of light with frequency of \(6 \times 10^{15}\ \text{s}^{-1}\)? 50 75 10 25

Which of the following is paramagnetic? \(CN^-\) \(NO^+\) CO \(O_2^-\)

Identify the correct order of solubility in aqueous medium. \(Na_2S > CuS > ZnS\) \(Na_2S > ZnS > CuS\) \(CuS > ZnS > Na_2S\) \(ZnS > Na_2S > CuS\)

The condition under which a microwave oven heats up a food item containing water molecules most efficiently is Microwaves are heat waves so always produce heating. Infra-red waves produce heating in a microwave oven. The frequency of the microwaves must match the resonant frequency of the water molecules. The frequency of the microwaves has no relation with natural frequency of water molecules.

When a proton is released from rest in a room it starts with an initial acceleration \(a_0\) towards west. When it is projected towards north with a speed \(v_0\) it moves with an initial acceleration \(3a_0\) towards west. The electric and magnetic fields in the room are \(\frac{ma_0}{e}\) east \(\frac{3ma_0}{ev_0}\) up \(\frac{ma_0}{e}\) east \(\frac{3ma_0}{ev_0}\) down \(\frac{ma_0}{e}\) west \(\frac{2ma_0}{ev_0}\) up \(\frac{ma_0}{e}\) west \(\frac{2ma_0}{ev_0}\) down

A parallel beam of fast moving electrons is incident normally on a narrow slit. A fluorescent screen is placed at a large distance from the slit. If the speed of the electrons is increased which of the following statements is correct? The angular width of the central maximum will decrease. The angular width of the central maximum will be unaffected. Diffraction pattern is not observed on the screen in the case of electrons. The angular width of the central maximum of the diffraction pattern will increase.

In a n-type semiconductor which of the following statement is true. Holes are minority carriers and pentavalent atoms are dopants. Holes are majority carriers and trivalent atoms are dopants. Electrons are majority carriers and trivalent atoms are dopants. Electrons are minority carriers and pentavalent atoms are dopants.

A B and C are three points in a uniform electric field. The electric potential is maximum at C same at all the three points A B and C maximum at A maximum at B

Which of the following statements about the interstitial compounds is incorrect? They are much harder than the pure metal. They have higher melting points than the pure metal. They retain metallic conductivity. They are chemically reactive.

A reaction having equal energies of activation for forward and reverse reactions has \(\Delta H = 0\) \(\Delta H = \Delta G = \Delta S = 0\) \(\Delta S = 0\) \(\Delta G = 0\)

Which of the following does not give oxygen on heating? \(K_2Cr_2O_7\) \((NH_4)_2Cr_2O_7\) \(KClO_3\) \(Zn(ClO_3)_2\)

\(XeF_2\) is isostructural with \(SbCl_3\) \(BaCl_2\) \(TeF_2\) \(ICl_2^-\)

Which of these is not a monomer for a high molecular mass silicone polymer? \(Me_3SiCl\) \(PhSiCl_3\) \(MeSiCl_3\) \(Me_2SiCl_2\)