List of top Questions asked in VITEEE

HBr reacts with \( \text{CH}_2 = \text{CH} - \text{OCH}_3 \) under anhydrous conditions at room temperature to give:

Acetic anhydride reacts with diethyl ether in the presence of anhydrous AlCl₃ to give:

The resistance of a 0.01 N solution of an electrolyte was found to be 220 ohm at 298 K using a conductivity cell with a cell constant of 0.88 cm\(^{-1}\). The value of equivalent conductance of solution is:

\( p \)-cresol reacts with chloroform in alkaline medium to give the compound A which adds hydrogen cyanide to form the compound B. The latter on acidic hydrolysis gives chiral carboxylic acid. The structure of the carboxylic acid is:

The radius of \( \text{La}^{3+} \) (Atomic number of La = 57) is 1.06 Å. Which one of the following given values will be closest to the radius of \( \text{Lu}^{3+} \) (Atomic number of Lu = 71)?

In a compound, atoms of element Y form ccp lattice and those of element X occupy \( \frac{2}{3} \)rd of tetrahedral voids. The formula of the compound will be:

The molecular formula of diphenyl methane, \( \text{C}_{13}\text{H}_{12} \), is \( \text{C}_{13}\text{H}_{12} \). How many structural isomers are possible when one of the hydrogens is replaced by a chlorine atom?

Calculate the enthalpy change for the change \( \text{S}_8(g) \rightarrow \text{S}_g(g) \), given that: \[ H_2S_2(g) \rightarrow 2H(g) + 2S(g), \quad \Delta H = 239.0 \, \text{kcal/mol} \] \[ H_2S(g) \rightarrow 2H(g) + S(g), \quad \Delta H = 175.0 \, \text{kcal/mol} \]

Which of the following is best method for reducing 3-bromopropanal to 1-bromopropane?

Which one of the following has an optical isomer?

An element occurring in the bcc structure has \( 12.08 \times 10^{23} \) unit cells. The total number of atoms of the element in these cells will be:

The major product of the following reaction is:

Compound ‘A’ of molecular formula \( C_6H_10O \) on treatment with Lucas reagent at room temperature gives compound ‘B’. When compound ‘B’ is heated with alcoholic KOH, it gives isobutene. Compound ‘A’ and ‘B’ are respectively:

The reagent(s) which can be used to distinguish acetophenone from benzophenone is (are):

In the extraction of Cu, the metal is formed in the Bessemer converter due to the reaction: \[ \text{Cu}_2S + O_2 \rightarrow 2Cu + SO_2 \] The correct equation is:

For which of the following systems at equilibrium, at constant temperature, will the doubling of the volume cause a shift to the right?

A body cools from 50.0°C to 49.9°C in 5s. How long will it take to cool from 40.0°C to 39.9°C? Assume the temperature of surroundings to be 30.0°C and Newton’s law of cooling to be valid:

Consider the junction diode is ideal. The value of current flowing through AB is:

A metal disc of radius 100 cm is rotated at a constant angular speed of 60 rad/s in a plane at right angles to an external field of magnetic induction 0.5 Wb/m\(^2\). The emf induced between the centre and a point on the rim will be:

Ionisation energy of \( \text{He}^+ \) is \( 19.6 \times 10^{-18} \, \text{J} \, \text{atom}^{-1} \). The energy of the first stationary state (n = 1) of \( \text{Li}^{2+} \) is:

The chirality of the compound:

Which of the following compounds is formed when a mixture of \( K_2Cr_2O_7 \) and NaCl is heated with conc. \( H_2SO_4 \)?

For the process \( H_2O(g) \, (1 \, \text{bar}, 373 \, \text{K}) \rightarrow H_2O(g) \, (1 \, \text{bar}, 373 \, \text{K}) \), the correct set of thermodynamic parameters is:

In the circuit shown the cells A and B have negligible resistances. For \( V_A = 12 \, \text{V} \), \( R_1 = 500 \, \Omega \) and \( R = 1000 \, \Omega \), the galvanometer \( G \) shows no deflection. The value of \( V_B \) is:

A steel wire of length \( \ell \) has a magnetic moment \( M \). It is then bent into a semicircular arc. The new magnetic moment is: