List of top Questions asked in KCET- 2009

For the constructive interference the path difference between the two interfering waves must be equal to
An organic compound on heating with $CuO$ produces $CO_2$, but no water. The organic compound may be
A door of $1.6\, m$ wide requires a force of $1 \,N$ to be applied at the free end to open or close it. The force that is required at a point $0.4\, m$ distant from the hinges for opening or closing the door is
A cow is tied to a post by a rope. The cow moves along the circular path always keeping the rope tight. If it describes $44\, metres$, when it has traced out $72^\circ$ at the centre, the length of the rope is
The complex number $\frac {1+2i}{1-i}$ lies in
For the parabola $y^2 = 4x$, the point $P$ whose focal distance is $17$, is
The area bounded between the parabola $y^2= 4x$ and the line $y = 2x - 4$ is equal to
Nosema bombycis which causes pebrine in silk worms is a
The number of subgroups of the group $(Z_5, +_5)$is
Damage to thymus in a child may lead to
The characteristic that is shared by urea, uric acid and ammonia is/are A. They arc nitrogenous wastes B. They all need very large amount of water for excretion C. They are all equally toxic D. They are produced in the kidneys
Most of the endangered species are the victims of
Transpiration facilitates
Match the names of the economically important plants (or their products) listed in Column-I with the families to which they belong given in column-II. Choose the answer which gives the correct combination of alphabets of the two columns : Column-I - Column II A. Sunflower - p. Acanthaceae B. Tulsi - Composite C.Cofee - r. Labiatae D.Vasaka - s. Rubiaceae - t Euphorbiaceae
The respiratory quotient during cellular respiration would depend on
The agents which are known to cause CJD are
IUPAC name of $(CH_3)_3CCl$
Ribose sugar is present in
The rate equation for a reaction : $A \rightarrow B$ is $r = K[A]^\circ$. If the initial concentration of the reactant is a mol $dm^{-3}$, the half life period of the reaction is
An electric heater rated $220\, V$ and $550\, W$ is connected to $AC$ mains. The current drawn by it is
According to Newton's Corpuscular Theory, the speed of light is
The oxidation state of $Fe$ in the brown ring complex : $[Fe(H_2O)_5 NO]SO_4$ is
The incorrect statement in respect of Chromyl chloride test is

Argon is used:

Hydrogen atom from excited state comes to the ground state by emitting a photon of wavelength $\lambda$. If $R$ is the Rydberg constant, the principal quantum number $'n'$ of the excited state is