List of top Questions asked in KCET

The energy equivalent to a substance of mass 1 g is
In Karnataka, the normal domestic power supply AC is 220 V, 50 Hz. Here 220 V and 50 Hz refer to
Isotonic solutions are solutions having the same
$1.0 \, g$ of Mg is burnt with 0.28 g of $O_2$ in a closed vessel. Which reactant is left in excess and how much ?
The charge required for the reduction of $1$ mol of $MnO_4^-$ to $MnO_2$ is
A block rests on a rough inclined plane making an angle of $30^{\circ}$ with the horizontal. The coefficient of static friction between the block and the plane is 0.8. If the frictional force on the block is 10 N, the mass of the block is $(g = 10 \, ms^{-2})$
ABO blood type in man is an example of 1. Pleiotropy 2. Incomplete dominance 3. Co-dominance 4. Multiple allelism Select the code for the correct answer from the options given below :
The technique of bombarding plant cells with high velocity microparticles of gold or tungsten, coated with DNA, is
The microorganisms involved in floe formation during sewage treatment are
When pollen grain is shed at 3-celled stage, name the cells it contains.
The temperature coefficient of a reaction is 2. When the temperature is increased from $30^{\circ} C$ to $90^{\circ}C$, the rate of reaction is increased by
Which of the following statements are collect? (i) NaH(s) reacts violently with water to form $NaOH$ and $H_2$ (ii) An example for electron rich hydride is $NH_3$ (iii) Nickel forms saline hydride
A cup of tea cools from $65.5^{\circ} C$ to $62.5^{\circ} C$ in 1 minute in a room at $22.5^{\circ} C$. How long will it take to cool from $46.5^{\circ} C$ to $40.5^{\circ} C$ in the same room ?
Ohm?? Law is applicable to
Two wires A and B are stretched by the same load. If the area of cross-section of wire 'A' is double that of 'B', then the stress on 'B' is
The correct Biot-Savart law in vector form is
Phenol can be distinguished from ethanol by the reagent
The work done to move a charge on an equipotential surface is
Two capacitors of $3 \, \mu F$ and $6 \, \mu F$ are connected in series and a potential difference of 900 V is applied across the combination. They are then disconnected and reconnected in parallel. The potential difference across the combination is
First overtone frequency of a closed pipe of length $'l_1'$ is equal to the $2^{nd}$ harmonic frequency of an open pipe of length $'l_2'$ .The ratio $\frac{l_1}{l_2} = $
The locus represented by $xy + yz = 0$ is
The probability of happening of an event A is 0.5 and the of B is 0.3 .If A and B are mutually exclusive events, then the probability of neither A nor B is
Electrolytic refining is used to purify which of the following metals ?
For the reaction, $2SO_2 + O_2 <=> 2SO_3, $ the rate of disappearance of $O_2$ is $2 \times 10^{-4} \, mol \, L^{-1} \, s^{-1}$ . The rate of of appearance of $SO_3$ is
The relationship between $K_p$ and $K_c$ is $K_p=K_c (RT)^{\Delta n}$ What would be the value of $\Delta n$ for the reaction : $NH_4Cl_{(s)} <=> NH3_{(g)} +HCl_{(g)}$ ?