Question Bank Directory

Chloropicrin is obtained by the reaction of:

Match the oxide given in Column-I with its property given in Column-II: **Column-I** (i) $Na_2O$ (ii) $Al_2O_3$ (iii) $N_2O$ (iv) $Cl_2O_7$ **Column-II** (a) Neutral (b) Basic (c) Acidic (d) Amphoteric Which of the following options is correct?

Considering the state of hybridisation of carbon atoms, find out the molecule among the following which is linear.

Which pair of ions among the following list do not constitute an iso-electronic pair?

Amongst the following, which one will have maximum 'lone pair - lone pair' electron repulsions?

The tendency of $\text{BF}_3$, $\text{BCl}_3$, and $\text{BBr}_3$ to behave as Lewis acid decreases in the sequence:

Which molecule among the following is non-polar?

Dipole-induced dipole interactions are present in which of the following pairs?

The Van't Hoff factor for 0.1 M Ba(NO₃)₂ solution is 2.74. The degree of dissociation is:

The correct order of ionic character among CaH$$_2$$, BeH$$_2$$ and BaH$$_2$$ is:

The rate of the reaction $2N_2O_5 \rightarrow 4NO_2 + O_2$ can be written in three ways: $-\frac{d[N_2O_5]}{dt} = k[N_2O_5]$ $\frac{d[NO_2]}{dt} = k'[N_2O_5]$ $\frac{d[O_2]}{dt} = k''[N_2O_5]$ The relationship between $k$ and $k'$ and between $k$ and $k''$ are:

The correct order of increasing thermal stability of $\text{K}_2\text{CO}_3$, $\text{MgCO}_3$, $\text{CaCO}_3$ and $\text{BeCO}_3$ is:

Beans get cooked earlier in a pressure cooker, because:

The correct shape and hybridisation of BrF$_5$ is:

If the rate of reaction doubles when the temperature is raised from $20^\circ\text{C}$ to $35^\circ\text{C}$, then the activation energy for the reaction will be : ($R = 8.314 \text{ J mol}^{-1} \text{ K}^{-1}$)

For the reaction, $5Br^- + BrO_3^- + 6H^+ \rightarrow 3Br_2 + 3H_2O$, the correct representation of the consumption and formation of reactants and products is:

Which one of the following statements is correct?

A reaction having equal energies of activation for forward and reverse reactions has

The rate constants $k_1$ and $k_2$ for two different reactions are $10^{16} e^{-2000/T}$ and $10^{15} e^{-1000/T}$, respectively. The temperature at which $k_1 = k_2$ is:

Mark the correct order of repulsion among the following according to the VSEPR theory.