List of top Chemistry Questions asked in VITEEE

Across the lanthanide series, the basicity of the lanthanide hydroxides

When p-nitrobromobenzene reacts with sodium ethoxide, the product obtained is

In the reaction sequence:
\[ \text{C}_2\text{H}_5\text{I} \xrightarrow{\text{Alcoholic KOH}} X \xrightarrow{\text{Br}_2/\text{CCl}_4} Y \xrightarrow{\text{KCN}} Z \xrightarrow{H_3O^+} A \] The product \(A\) is

For the reaction, $2 A(g)+B_{2}(g) \rightleftharpoons 2 A B_{2}(g)$ the equilibrium constant, $K_{p}$ at $300\, K$ is $16.0$. The value of $K_{p}$ for $A B_{2}(g) \rightleftharpoons A(g)+1 / 2 B_{2}(g)$ is

For which one of the following reactions will there be a positive $\Delta S$ ?

Which of the following is a Gattermann aldehyde synthesis?

Most crystals show good cleavage because their atoms, ions or molecules are

Enthalpy of a compound is equal to its

Which of the following converts $CH_3CONH_2$ to $CH_3NH_2$ ?

Frenkel defect is generally observed in

On treatment of propanone with dilute $Ba(OH)_2$, the product formed is

Nitrobenzene can be converted into azobenzene by reduction with

Which of the following compounds is not coloured?

$pH$ of a buffer solution decreases by $0.02$ units when $0.12\,g$ of acetic acid is added to $250\, mL$ of a buffer solution of acetic acid and potassium acetate at $27^{\circ} C$. The buffer capacity of the solution is

Consider the following reaction:
\[ C_2H_5Cl + AgCN \xrightarrow[\text{EtOH/H}_2O]{} X \;(\text{major}) \]
Which one of the following statements is true for \(X\)?
(I) It gives propionic acid on hydrolysis
(II) It has an ester functional group
(III) It has nitrogen linked to ethyl carbon
(IV) It has a cyanide group

Aluminium reacts with NaOH and forms compound \(X\). If the coordination number of aluminium in \(X\) is \(6\), the correct formula of \(X\) is

How many mL of perhydrol is required to produce sufficient oxygen which can be used to completely convert \(2L\) of \(SO_2\) gas to \(SO_3\) gas?

During the depression in freezing point experiment, an equilibrium is established between the molecules of

The concentration of an organic compound in chloroform is \(6.15\,g\) per \(100\,mL\) of solution. A portion of this solution in a 5 cm polarimeter tube causes an observed rotation of \(-1.2^\circ\). What is the specific rotation of the compound?

Which one of the following is the most effective in the coagulation of an \(As_2S_3\) sol?

For a first order reaction at \(27^\circ C\), ratio of time required for \(75%\) completion to \(25%\) completion of reaction is

The equilibrium constant for the given reaction is \(100\).
\[ N_2(g) + 2O_2(g) \rightleftharpoons 2NO_2(g) \]
What is the equilibrium constant for the reaction given below?
\[ NO_2(g) \rightleftharpoons \frac{1}{2}N_2(g) + O_2(g) \]

\(20\,mL\) of \(0.1\,M\) acetic acid is mixed with \(50\,mL\) of potassium acetate. \(K_a\) of acetic acid \(= 1.8\times 10^{-5}\). At \(27^\circ C\), calculate the concentration of potassium acetate if pH of the mixture is \(4.8\).

The cubic unit cell of a metal (molar mass = \(63.55\,g\,mol^{-1}\)) has an edge length of \(362\,pm\). Its density is \(8.92\,g\,cm^{-3}\). The type of unit cell is

For the following cell reaction:
\[ Ag|Ag^+||AgCl|Cl^-|Cl_2,Pt \]
\[ \Delta G_f^\circ(AgCl) = -109\,kJ/mol \]
\[ \Delta G_f^\circ(Cl^-) = -129\,kJ/mol \]
\[ \Delta G_f^\circ(Ag^+) = 78\,kJ/mol \]
\(E^\circ\) of the cell is