List of practice Questions

'X' is a polymer, which is mainly used for making unbreakable cups and laminated sheets. The monomers of 'X' are

Which one of the following is not an ambidentate ligand?

In acidic medium one mole each of \( \text{MnO}_4^- \) and \( \text{Cr}_2\text{O}_7^{2-} \) is reduced by x and y moles of ferrous ions. The sum of x and y is

Which of the following pairs of oxoacids has basicity as 2?

Xenon hexafluoride on partial hydrolysis gives 'X' and HF. The shape of 'X' is

Phosphorus on reaction with sulphuryl chloride gives a compound X, which on complete hydrolysis gives Y. X and Y are respectively

Which of the following is not related to extraction of copper?

For the reaction \( R \to P \), half life is independent of initial concentration of the reactant, R. Which one of the following graphs is not correct for this reaction?

At 298 K, if emf of the cell corresponding to the reaction, \( \text{Zn(s)} + 2\text{H}^+ \text{(aq)} \to \text{Zn}^{2+} (0.01 \text{ M}) + \text{H}_2 \text{(g)} \) (1 atm) is 0.28 V, then the pH of the solution at the hydrogen electrode is \( \left( \frac{2.303 RT}{F} = 0.06 \text{ V} \right) \), \( E^0_{\text{Zn}^{2+}|\text{Zn}} = -0.76 \text{ V} \)

A substance has a density of \( 2 \, \text{g cm}^{-3} \). It crystallizes in the fcc crystal with an edge length of 600 pm. The molar mass of the substance (in \( \text{g mol}^{-1} \)) is (\( N_A = 6 \times 10^{23} \, \text{mol}^{-1} \))

For the alkyne with formula \( \text{C}_6\text{H}_{10} \), the number of alkynes with acidic hydrogens is \( x \) and number of alkynes with no acidic hydrogens is \( y \). \( x \) and \( y \) are respectively

Which of the following compounds will be suitable for estimation of nitrogen by Kjeldahl's method?
Structures:

Which one of the following represents hyperconjugation effect?

Consider the following sequence of reactions. In 'Z' the number of sp\(^3\) carbons is 'a' and sp\(^2\) carbons is 'b'. Value of (a + b) is

Among the following compounds, which one is not primarily responsible for depletion of ozone layer in stratosphere?

Observe the following oxides. The number of amphoteric oxides from the given list is
\( \text{CO}, \text{B}_2\text{O}_3, \text{SiO}_2, \text{PbO}_2, \text{Ga}_2\text{O}_3, \text{SnO}, \text{PbO}, \text{CO}_2 \)

When burnt in excess of oxygen, sodium forms a compound X and potassium forms a compound Y. The magnetic natures of X and Y respectively are

Oxidation state of hydrogen in compound X is -1 and in compound Y is +1. X and Y are respectively

For the reaction \( \text{N}_2\text{O}_4(g) \rightleftharpoons 2\text{NO}_2(g) \), the correct relation between degree of dissociation (\(\alpha\)) of \( \text{N}_2\text{O}_4(g) \) and equilibrium constant, \( K_p \) is (P = total pressure of mixture)

At 298 K, the enthalpy change (in kJ) for the reaction given below is: \( \text{CH}_4(g) + \text{O}_2(g) \to \text{C}(s) + 2\text{H}_2\text{O}(l) \) (Given: \( \text{H}_2(g) + \frac{1}{2}\text{O}_2(g) \to \text{H}_2\text{O}(l); \Delta H^\ominus = -286 \text{ kJ} \) \( \text{C}(s) + \text{O}_2(g) \to \text{CO}_2(g); \Delta H^\ominus = -394 \text{ kJ} \) \( \text{CH}_4(g) + 2\text{O}_2(g) \to \text{CO}_2(g) + 2\text{H}_2\text{O}(l); \Delta H^\ominus = -890 \text{ kJ} \))

The RMS velocity of dihydrogen is \( \sqrt{7} \) times more than that of dinitrogen. If \( T_{\text{H}_2} \) and \( T_{\text{N}_2} \) are the temperatures of dihydrogen and dinitrogen, then the correct relationship between them is

Consider the following statements.
I. In the conversion of \( \text{O}_2 \) to \( \text{O}_2^{2+} \) bond order decreases.
II. In the conversion of \( \text{O}_2 \) to \( \text{O}_2^{+} \) magnetic property is not changed.
III. In the conversion of \( \text{O}_2 \) to \( \text{O}_2^{+} \) bond length decreases.
IV. \( \text{O}_2^{2-} \) and \( \text{B}_2 \) have same bond order.
Identify the correct statements

Identify the pair of molecules in which the hybridization of the central atom is \( sp^2 \) with bent geometry

The radius of stationary state (\(n=2\)) of hydrogen atom is \(x\) pm. The radius of stationary state (\(n=3\)) of \( \text{He}^{+} \) ion (in pm) is