List of top Questions asked in VITEEE

Choose the complex which is paramagnetic:

Phosphine is generally prepared in the laboratory:

The reaction \( 2NO(g) + O_2(g) \rightarrow 2NO_2(g) \) is of first order. If volume of the reaction vessel is reduced to \( \frac{1}{3} \) times, the rate of reaction would be:

Which are the starting materials for the preparation of the compound shown in the figure?

Which element gives the maximum number of oxides?

An organic compound 'A' has the molecular formula \( C_3H_6O \), it undergoes iodoform test. When saturated with dil. HCl it gives 'B' of molecular formula \( C_9H_{14}O \). A and B respectively are:

Here Z is

Calculate the entropy change in melting 1 mole of ice at 273 K, \( \Delta H_f^o = 6.025 \, \text{kJ/mol} \):

In a closed insulated container, a liquid is stirred with a paddle to increase its temperature. In this process, which of the following is true?

At low pressure, the van der Waals equation is reduced to:

Copper sulfate solution reacts with KCN to give:

For the reaction \[ \text{H}_2 \text{(g)} + \frac{1}{2} \text{O}_2 \text{(g)} \rightarrow \text{H}_2 \text{O}(\ell), \Delta H = -285.8 \, \text{kJ/mol}^{-1} \] \text{The value of free energy change at 27°C for the reaction is:}

A reaction involving \( K_2 \text{Cr}_2 \text{O}_7 \) is treated with hydrogen sulfide. The oxidation number of chromium changes from +3 to +6, +2, or remains unchanged. Which of the following correctly reflects the change in oxidation number?

Bragg's law is given by which of the following equation?

The value of \( K_c \) for the reaction: \[ A + 3B \rightleftharpoons 2C \text{ at } 400^\circ C \text{ is } 0.5. \text{ Calculate the value of } K_p. \]

Tautomerism is net exhibited by:

The electrode potentials for \[ \text{Cu}^{2+}(aq) + e^- \rightleftharpoons \text{Cu}(s) \] \text{and} \[ \text{Cu}^{2+}(aq) + e^- \rightleftharpoons \text{Cu}(aq) \] \text{are +0.15 V and +0.50 V, respectively. The value of \( E^\circ_{\text{Cu}^{2+}/\text{Cu}} \) will be:}

Deep sea divers use to respire a mixture of:

The wavelengths of two photons are 2000Å and 4000Å, respectively. What is the ratio of their energies?

Ethylene glycol, on oxidation with periodic acid, gives:

What is X in the following change?

In Young’s double slit experiment, the central point on the screen is:

The work done in ergs for the reversible expansion of one mole of an ideal gas from a volume of 10 litres to 20 litres at 25°C is:

A Fischer projection of (2R, 3S)-2,3-butanediol is:

Arrange the following particles in increasing order of values of \( e/m \) ratio: electron (e), proton (p), neutron (n) and \( \alpha \)-particle (\( \alpha \)):