NEET 2002 Question Paper with Solutions

A rod of length is 3 m and its mass acting per unit length is directly proportional to distance x from one of its end then its centre of gravity from that end will be at:

A whistle revolves in a circle with angular speed \(\omega=20\ \text{rad/s}\) using a string of length 50 cm. If the frequency of sound from the whistle is 385 Hz, then what is the minimum frequency heard by an observer which is far away from the centre (velocity of sound = 340 m/s)

Which of the following is best close to an ideal black body?

A circular disc is to be made by using iron and aluminium so that it acquired maximum moment of inertia about geometrical axis. It is possible with

The efficiency of Carnot engine is 50% and temperature of sink is 500 K. If temperature of source is kept constant and its efficiency raised to 60%, then the required temperature of sink will be

Heat of combustion \(\Delta H^\circ\) for C(s), \(H_2(g)\) and \(CH_4(g)\) are -94, -68 and -213 kcal/mol, then \(\Delta H^\circ\) for C(s)+2\(H_2(g)\rightarrow CH_4(g)\) is

2 mole of ideal gas at \(27^\circ C\) temperature is expanded reversibly from 2 lit. to 20 lit. Find entropy change. (R = 2 cal/mol K)

In hydrogen atom, energy of first excited state is -3.4 eV. Then find out K.E. of same orbit of hydrogen atom

Van der Waal's real gas, acts as an ideal gas, at which conditions?

Which reaction is not feasible?

Which of the following is not the property of cathode rays?

The given truth table is for which logic gate

The magnetic field of given length of wire for single turn coil at its centre is B then its value for two turns coil for the same wire is

In a p-n junction

Two bar magnets having same geometry with magnetic moments M and 2M, are firstly placed in such a way that their similar poles are same side then its time period of oscillation is \(T_1\). Now the polarity of one of the magnet is reversed then time period of oscillation is \(T_2\), then

Which of the following statement is true?

When phenol is treated with \(CHCl_3\) and NaOH, the product formed is

\(CuSO_4\) when reacts with KCN forms CuCN, which is insoluble in water. It is soluble in excess of KCN, due to formation of the following complex

In electrolysis of NaCl when Pt electrode is taken then \(H_2\) is liberated at cathode while with Hg cathode it forms sodium amalgam

In the following reaction product P is