List of top Questions asked in KCET

The change in hybridisation (if any) of the 'Al' atom in the following reaction is
AlCl3 + Cl- → AlCl4-

Match List-I with List-II and select the correct option: 

The electronic configuration of X and Y are given below:
X: 1s22s22p63s23p3
Y: 1s22s22p63s23p5
Which of the following is the correct molecular formula and type of bond formed between X and Y?

Match List-I with List-II and choose the correct answer from the options given below. 

In the following pairs, the one in which both transition metal ions are colourless is

The variations of resistivity \( \rho \) with absolute temperature \( T \) for three different materials X, Y, and Z are shown in the graph below. Identify the materials X, Y, and Z. 

Given, a current carrying wire of non-uniform cross-section, which of the following is constant throughout the length of the wire?

The graph between variation of resistance of a wire as a function of its diameter keeping other parameters like length and temperature constant is 

Two thin long parallel wires separated by a distance \( r \) from each other in vacuum carry a current of 1 ampere in opposite directions. Then, they will
A solenoid is 1 m long and 4 cm in diameter. It has five layers of windings of 1000 turns each and carries a current of 7 A. The magnetic field at the centre of the solenoid is
Two similar galvanometers are converted into an ammeter and a millammeter. The shunt resistance of ammeter as compared to the shunt resistance of millammeter will be
Which of the following statements is true in respect of diamagnetic substances?
Identify the correct statement:

Which of the following graphs represent the variation of magnetic field \( B \) with perpendicular distance \( r \) from an infinitely long, straight conductor carrying current? 

If we consider an electron and a photon with the same de-Broglie wavelength, then they will have the same

The anode voltage of a photocell is kept fixed. The frequency of the light falling on the cathode is gradually increased. Then the correct graph which shows the variation of photo current \( I \) with the frequency \( f \) of incident light is 

When a bar magnet is pushed towards the coil, along its axis, as shown in the figure, the galvanometer pointer deflects towards X. When this magnet is pulled away from the coil, the galvanometer pointer 

A square loop of side 2 m lies in the Y-Z plane in a region having a magnetic field \(\mathbf{B} = (5 \hat{i} - 3 \hat{j} - 4 \hat{k}) \, \text{T}\). The magnitude of magnetic flux through the square loop is
In domestic electric mains supply, the voltage and the current are
A sinusoidal voltage produced by an AC generator at any instant \( t \) is given by an equation \( V = 311 \sin (314t) \). The rms value of voltage and frequency are respectively
A series LCR circuit containing an AC source of 100V has an inductor and a capacitor of reactances 24\(\Omega\) and 16\(\Omega\) respectively. If a resistance of 6\(\Omega\) is connected in series, then the potential difference across the series combination of inductor and capacitor will be
Match the following types of waves with their wavelength ranges
A ray of light passes from vacuum into a medium of refractive index \( n \). If the angle of incidence is twice the angle of refraction, then the angle of incidence in terms of refractive index \( n \) is

A convex lens has power \( P \). It is cut into two halves along its principal axis. Further, one piece (out of two halves) is cut into two halves perpendicular to the principal axis as shown in the figure. Choose the incorrect option for the reported lens pieces. 

The image formed by an objective lens of a compound microscope is