List of top Questions asked in KCET

The type of linkage present between nucleotides is:

Sodium ethanoate on heating with soda lime gives ‘X’. Electrolysis of aqueous solution of sodium ethanoate gives ‘Y’. ‘X’ and ‘Y’ respectively are:

The compound is

Which one of the following is a cationic detergent?

$\alpha$-D-(+)-glucose and $\beta$-D-(+)-glucose are:

Which of the following set of polymers are used as fibre?
(i) Teflon
(ii) Starch
(iii) Terylene
(iv) Orlon

The biodegradable polymer obtained by polymerisation of Glycine and Aminocaproic acid is:

One mole of an ideal monatomic gas is taken round the cyclic process \( MNOM \). The work done by the gas is

A solid cube of mass \( m \) at a temperature \( \theta_0 \) is heated at a constant rate. It becomes liquid at temperature \( \theta_1 \), and vapor at temperature \( \theta_2 \). Let \( s_1 \) and \( s_2 \) be specific heats in its solid and liquid states respectively. If \( L \) and \( L_v \) are latent heats of fusion and vaporization respectively, then the minimum heat energy supplied to the cube until it vaporises is

A thick metal wire of density \( \rho \) and length \( L \) is hung from a rigid support. The increase in length of the wire due to its own weight

Water flows through a horizontal pipe of varying cross-section at a rate of 0.314 m³/s. The velocity of water at a point where the radius of the pipe is 10 cm is

The value of acceleration due to gravity at a height equal to half the radius of the Earth, from its surface

A body of mass 1 kg is suspended by a weightless string which passes over a frictionless pulley of mass 2 kg as shown in the figure. The mass is released from a height of 1.6m from the ground. With what velocity does it strike the ground?

A ceiling fan is rotating around a fixed axle as shown. The direction of angular velocity is along

Dimensional formula for activity of a radioactive substance is

A block of certain mass is placed on a rough inclined plane. The angle between the plane and the horizontal is \( 30^\circ \). The coefficients of static and kinetic frictions between the block and the inclined plane are 0.6 and 0.5 respectively. Then the magnitude of the acceleration of the block is

A particle of mass 500 g is at rest. It is free to move along a straight line. The power delivered to the particle varies with time according to the following graph:

Among the given pair of vectors, the resultant of two vectors can never be 3 units. The vectors are

Depletion region in an unbiased semiconductor diode is a region consisting of

The natural logarithm of the activity \( R \) of a radioactive sample varies with time \( t \) as shown. At \( t = 0 \), there are \( N_0 \) undecayed nuclei. Then \( N_0 \) is equal to \([\text{Take} \ e^{7.5}] \)

The upper level of valence band and lower level of conduction band overlap in the case of

An athlete runs along a circular track of diameter 80m. The distance travelled and the magnitude of displacement of the athlete when he covers \( \frac{3}{4} \) of the circle is (in m)

A p-n junction diode is connected to a battery of emf 5.7 V in series with a resistor 5k \( \Omega \) such that it is forward biased. If the barrier potential of the diode is 0.7 V, neglecting the diode resistance, the current in the circuit is

In alpha particle scattering experiment, if \( v \) is the initial velocity of the particle, then the distance of closest approach is

Light of energy \( E \) falls normally on a metal of work function \( W_0 \). The kinetic energies \( K \) of the photoelectrons are