Sample Quiz

Choose the correct option for the total pressure (in atm.) in a mixture of \(4 \mathrm{~g}  \mathrm{O}_{2}\) and \(2 \mathrm{~g}  \mathrm{H}_{2}\) confined in a total volume of one litre at \(0^{\circ} \mathrm{C}\) is :
[Given \(\mathrm{R}=0.82 \mathrm{~L}\) atm \(\mathrm{mol}^{-1} \mathrm{~K}^{-1}, \mathrm{~T}=273 \mathrm{~K}\) ]

Which of the following molecules is non-polar in nature?

From the following pairs of ions which one is not an iso-electronic pair?

For the irreversible expansion of an ideal gas under isothermal condition, the correct option is:

The reagent ‘R’ in the given sequence of chemical reaction is:

The slope of Arrhenius Plot \(\left(\operatorname{In} \mathrm{K} / \mathrm{vs} \frac{1}{\mathrm{~T}}\right)\) of first order reaction is \(-5 \times 10^{3} \mathrm{~K}\). The value of \(\mathrm{E}_{\mathrm{a}}\) of the reaction is. Choose the correct option for your answer.
[Given \(\mathrm{R}=8.314 \mathrm{JK}^{-1} \mathrm{~mol}^{-1}\) ]

The correct option for the value of vapour pressure of a solution at 45ºC with benzene to octane in molar ratio 3 : 2 is :
[At 45ºC vapour pressure of benzene is 280 mm Hg and that of octane is 420 mm Hg. Assume Ideal gas]

\(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{COO}^{-} \mathrm{Na}^{+} \frac{\mathrm{NaOH}_{2}+?}{\text { Heat }} \longrightarrow \mathrm{CH}_{3} \mathrm{CH}_{3}+\mathrm{Na}_{2} \mathrm{CO}_{3}\).

Consider the above reaction and identify the missing reagent/chemical.

Dihedral angle of the least stable conformer of ethane is:

The following solutions were prepared by dissolving \(10 \mathrm{~g}\) of glucose \(\left(\mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6}\right)\) in \(250 \mathrm{ml}\) of water \(\left(P_{1}\right), 10 \mathrm{~g}\) of urea \(\left(\mathrm{CH}_{4} \mathrm{~N}_{2} \mathrm{O}\right)\) in \(250 \mathrm{ml}\) of water \(\left(\mathrm{P}_{2}\right)\) and \(10 \mathrm{~g}\) of sucrose \(\left(\mathrm{C}_{12} \mathrm{H}_{22} \mathrm{O}_{11}\right)\) in \(250 \mathrm{ml}\) of water \(\left(P_{3}\right)\).

The right option for the decreasing order of osmotic pressure of these solution is: