List of practice Questions

If the bond order in $ C_2 $ is $ x $, then the bond order in $ B_2 $ and $ O_2 $, respectively are:

Which one is an example of heterogenous catalysis?

Identify incorrectly matched set from the following

An ideal gas (X) present in a vessel of volume $ V $ exerted a pressure of 16.4 atm at 200 K. What is its concentration in mol $ L^{-1} $? Given Data Given $ R = 0.082 \, \text{L atm mol}^{-1} \text{K}^{-1} $

A 100 L cylinder containing H2 exerted a pressure of 4 atm at 300 K. It was accidentally opened and some H2 was escaped. When it was closed, it exerted a pressure of 3 atm at 300 K. The number of moles of H2 remaining in the cylinder is equal to

An ideal gas (X) present in a vessel of volume $ V $ exerted a pressure of 16.4 atm at 200 K. What is its concentration in mol $ L^{-1} $? % Given Data Given $ R = 0.082 \, \text{L atm mol}^{-1} \text{K}^{-1} $

If the standard enthalpy change ($\Delta H^o$) for a certain reaction at 298 K and constant pressure is -1860 kJ mol$^{-1}$, the standard entropy change ($\Delta S^o$) of the same reaction is -550 J K$^{-1}$ mol$^{-1}$, which of the following statements is correct?

If the standard enthalpy change ($\Delta H^o$) for reaction \[ \text{H}_2(g) + \text{Br}_2(l) \rightarrow 2 \text{HBr}(g) \] is $-72.8 \, \text{kJ}$, the standard enthalpy of formation ($\Delta H_f^o$) of $\text{HBr}(g)$ in $\text{kJ mol}^{-1}$ is:

At $ T(K) $, the equilibrium constant for $ A (g) \rightleftharpoons B (g) $ is $ 10^2 $. If the rate of forward reaction is 0.025 mol L$^{-1}$ s$^{-1}$, the rate of backward reaction (in mol L$^{-1}$ s$^{-1}$) is

One mole $\text{H}_2\text{O}(g)$ and one mole $\text{CO}(g)$ are taken in a 1L flask and heated to 725K. At equilibrium, 40% (by mass) of water reacted with $\text{CO}(g)$ as follows: \[ \text{H}_2\text{O}(g) + \text{CO}(g) \rightleftharpoons \text{H}_2(g) + \text{CO}_2(g) \] Its $K_c$ value is:

The O-H bond length in $ H_2O $ in gas phase is

Which of the following alloys are correctly matched with their uses? \[ \text{i) Li/Mg} \quad \text{armour plates} \] \[ \text{ii) Cu/Be} \quad \text{high strength springs} \] \[ \text{iii) Mg/Al} \quad \text{aircraft construction} \]

Match the following

Choose the acidic oxide from the following:

In the Kolbe electrolysis of sodium propanoate, the products X and Y are formed at the respective electrodes. What are X and Y?

Which of the following molecules is not aromatic?

An example of a network solid is:

20 mL of 0.1 M HCl is added to 30 mL of 0.1 M NaOH. To this solution, extra 50 mL of water was added. What is the molarity of the final solution formed?

20 mL of 0.1 M HCl is added to 30 mL of 0.1 M NaOH. To this solution, extra 50 mL of water was added. What is the molarity of the final solution formed?

The conductivity of a solution containing 2.08 g of anhydrous barium chloride in 200 mL solution is $6 \times 10^{-3} \, \text{ohm}^{-1} \, \text{cm}^{-1}$. The molar conductivity of the solution (in $\text{ohm}^{-1} \, \text{cm}^{2} \, \text{mol}^{-1}$) is $x \times 10^{2}$. The value of $x$ is (Atomic mass of Ba = 137, Cl = 35.5)

For the reaction A + B → C, the following data were obtained:

The order of reaction with respect to A and B are respectively

The correct statements about Zeolites are:
1. They are good shape selective catalysts
2. They contain Al-O-Si framework
3. They are not found in nature
4. They are used as catalysts for cracking hydrocarbons in the petrochemical industry.

Which of the following is not the application of adsorption?

How many of the following metals can be purified by using zone refining method? Ni, B, Ti, In, Ge, Mn, Ag, Si, Ga