NEET 2003 Question Paper with Solutions

A stationary particle explodes into two particles of masses \(m_1\) and \(m_2\) which move in opposite directions with velocities \(v_1\) and \(v_2\). The ratio of their kinetic energies \(E_1/E_2\) is:

The potential energy of a simple harmonic oscillator when the particle is half way to its end point is

A monkey of mass 20 kg is holding a vertical rope. The rope will not break when a mass of 25 kg is suspended from it but will break if the mass exceeds 25 kg. What is the maximum acceleration with which the monkey can climb up along the rope? (g = 10 \(\text{m/s}^2\))

A particle moves along a circle of radius \((\frac{20}{\pi})\) m with constant tangential acceleration. If the velocity of the particle is 80 m/s at the end of the second revolution after motion has begun, the tangential acceleration is

An observer moves towards a stationary source of sound with a speed 1/5th of the speed of sound. The wavelength and frequency of the source emitted are \(\lambda\) and f respectively. The apparent frequency and wavelength recorded by the observer are respectively

What is the entropy change (in J K\(^{-1}\) mol\(^{-1}\)) when one mole of ice is converted into water at \(0^\circ C\)? (The enthalpy change for the conversion of ice to liquid water is \(6.0\ \text{kJ mol}^{-1}\) at \(0^\circ C\)).

Formation of solution from two components can be considered as (i) Pure solvent \(\rightarrow\) separated solvent molecules, \(\Delta H_1\) (ii) Pure solute \(\rightarrow\) separated solute molecules, \(\Delta H_2\) (iii) Separated solvent and solute molecules \(\rightarrow\) solution, \(\Delta H_3\). Solution so formed will be ideal if

The value of Planck's constant is \(6.63\times10^{-34}\) J s. The velocity of light is \(3.0\times10^8\ \text{m s}^{-1}\). Which value is closest to the wavelength in nanometers of a quantum of light with frequency of \(8\times10^{15}\ \text{s}^{-1}\)?

Which of the following pairs of compounds are enantiomers?

In Haber process 30 litres of dihydrogen and 30 litres of dinitrogen were taken for reaction which yielded only 50% of the expected product. What will be the composition of gaseous mixture under the aforesaid condition in the end?

If a full wave rectifier circuit is operating from 50 Hz mains, the fundamental frequency in the ripple will be

Three capacitors each of capacity \(4\ \mu F\) are to be connected in such a way that the effective capacitance is \(6\ \mu F\). This can be done by

A diamagnetic material in a magnetic field moves

A bar magnet is oscillating in the Earth's magnetic field with a period T. What happens to its period and motion if its mass is quadrupled?

Which of the following rays are not electromagnetic waves?

The final product C, obtained in this reaction would be

If the rate of the reaction is equal to the rate constant, the order of the reaction is

In this reaction: \(CH_3CHO+HCN\rightarrow CH_3CH(OH)CN\xrightarrow{H_2O}CH_3CH(OH)COOH\) an asymmetric centre is generated. The acid obtained would be

The e.m.f. of a Daniell cell at 298 K is \(E_1\). When the concentration of \(ZnSO_4\) is 1.0 M and that of \(CuSO_4\) is 0.01 M, the e.m.f. changed to \(E_2\). What is the relationship between \(E_1\) and \(E_2\)?

In a set of the given reactions, acetic acid yielded a product C. Product C would be