List of top Questions asked in VITEEE

The molarity of \( NO_3^- \) in the solution after 2L of 3M \( AgNO_3 \) is mixed with 3L of 1M BaCl2 is
Amongst \( NO_3^- \), \( SO_3^{2-} \), \( CO_3^{2-} \), \( SO_4^{2-} \) the non-planar species are
A and B respectively are
A certain metal when irradiated by light (\( r = 3.2 \times 10^{16} \, \text{Hz} \)) emits photoelectrons with twice kinetic energy as did photoelectrons when the same metal is irradiated by light (\( r = 2.0 \times 10^{16} \, \text{Hz} \)). The \( \nu \) of metal is
Gaseous benzene reacts with hydrogen gas in presence of a nickel catalyst to form gaseous cyclohexane according to the reaction, \[ C_6H_6(g) + 3H_2(g) \xrightarrow{Ni} C_6H_{12}(g) \] A mixture of \( C_6H_6 \) and excess \( H_2 \) has a pressure of 60 mm of Hg in an unknown volume. After the gas had been passed over a nickel catalyst and all the benzene converted to cyclohexane, the pressure of the gas was 30 mm of Hg in the same volume at the same temperature. The fraction of \( C_6H_6 \) (by volume) present in the original volume is
An alloy of copper, silver and gold is found to have copper atom constituting the ccp lattice. If silver atoms occupy the edge centres and gold atoms are present at body centres, the alloy has a formula
Given, \( \Delta G^\circ = -nFE_{\text{cell}} \) and \( \Delta G^\circ = -RT \ln K \). The value of \( n = 2 \) will be given by the slope of which line in the figure
The rate of volume occupied by an atom to the volume of the nucleus is
When copper is treated with a certain concentration of nitric acid, nitric oxide and nitrogen dioxide are liberated in equal volumes according to the equation, \[ xCu + yHNO_3 \rightarrow Cu(NO_3)_2 + NO + NO_2 + H_2O \] The coefficients of \( x \) and \( y \) are respectively
A saturated solution of \( H_2S \) in 0.1M HCl at 25°C contains \( S^{2-} \) ion concentration of \( 10^{-23} \, \text{mol L}^{-1} \). The solubility product of some sulfides are \( CuS = 10^{-44} \), \( FeS = 10^{-14} \), and \( MnS = 10^{-25} \). If 0.01M solution of these salts in 1M HCl are saturated with \( H_2S \), which of these will be precipitated?
Consider the water gas equilibrium reaction, \[ C(s) + H_2O(g) \rightleftharpoons CO(g) + H_2(g) \] Which of the following statements is true at equilibrium?
The chemical composition of slag formed during the smelting process in the extraction of copper is
\( XCl_2 \) (excess) + \( YCl_2 \) \( \rightarrow XCl_4 + YI \) Ore of \( Y \) formed is
For the given reaction, \[ H_2(g) + Cl_2(g) \rightleftharpoons 2HCl(aq) + 2ClT(aq); \, \Delta G = -262kJ \] The value of free energy of formation (\( \Delta G_f \)) for the ion C\( T_1 \) is
Two convex lenses of power 2D and 5D are separated by a distance \( \frac{1}{3} \, \text{m} \). The power of optical system formed is
Two light rays having the same wavelength in vacuum are in phase initially. Then, the first ray travels a path \( L_1 \) through a medium of refractive index \( \mu_1 \), while the second ray travels a path \( L_2 \) through a medium of refractive index \( \mu_2 \). The two waves are then combined to observe interference. The phase difference between the two waves is
Two polaroids are kept crossed to each other. If one of them is rotated an angle 60°, the percentage of incident light now transmitted through the system is
An electromagnetic wave propagating along north lies its electric field vertically upward. The magnetic field vector points towards
Pick out the wrong statement.
When sunlight is scattered by atmospheric atoms and molecules the amount of scattering of light of wavelength 880 nm is \( A \). Then, the amount of scattering of light of wavelength 330 nm is approximately
An induced emf has
A coil of area 5 cm² having 20 turns is placed in a uniform magnetic field of \( 10^3 \, \text{gauss} \). The normal to the plane of coil makes an angle 30° with the magnetic field. The flux through the coil is
The current graph for resonance in an \( LC \) circuit is
The value of inductance \( L \) for which the current is maximum in series \( LCR \) circuit with \( C = 10 \, \mu F \) and \( R = 1000 \, \Omega \) is
A ray of light is incident on a plane mirror at an angle of 30°. At what angle with the horizontal must a plane mirror be placed so that the reflected ray becomes vertically upwards?