List of top Chemistry Questions on p -Block Elements asked in VITEEE

In which of the following pairs both the ions are coloured in aqueous solutions?

In the following sequence of reactions, \[ \text{CH}_3\text{CH}_2\text{OH} \xrightarrow{P_1,2} A \xrightarrow{\text{Mg/ether}} B \xrightarrow{\text{HCHO}} C \xrightarrow{H_2O} D \] The compound D is:

Secondary structure of protein refers to:

Consider the following reactions: \[ \text{NaCl} + \text{K}_2\text{Cr}_2\text{O}_7 + \text{H}_2\text{SO}_4 (\text{Conc.}) \rightarrow (A) + \text{Side products} \] \[ (B) + \text{H}_2\text{SO}_4 (\text{dilute}) + \text{H}_2\text{O}_2 \rightarrow (C) + \text{Side products} \] The sum of the total number of atoms in one molecule each of (A), (B) and (C) is __________.

The edge length of unit cell of a metal having molecular weight 75 g/mol is 5 Å which crystallizes in cubic lattice. If the density is 2 g/cc, then find the radius of the metal atom. (\( N_A = 6 \times 10^{23} \)) Give the answer in pm.

Among the following molecules, those having the same number of lone pairs on Xe are: (i) \( XeO_3 \) (ii) \( XeOF_4 \) (iii) \( XeF_6 \)

Phosphine is generally prepared in the laboratory:

Which element gives the maximum number of oxides?

Deep sea divers used to respirate a mixture of

The correct order of the thermal stability of hydrogen halides (H-X) is:

Which of the following compounds is formed when a mixture of \( K_2Cr_2O_7 \) and NaCl is heated with conc. \( H_2SO_4 \)?

Which of the following has maximum number of lone pairs associated with Xe?

Which of the following oxy-acids has the maximum number of hydrogens directly attached to phosphorus?

Which of the following reactions of xenon compounds is not feasible?

\( \text{XeF}_4 \) disproportionate in water to give

With excess of water, both \( P_2O_5 \) and \( PCl_5 \) give

Which two sets of reactants best represent the amphoteric character of \( Zn(OH)_2 \)? Set I \( Zn(OH)_2(s) \) and \( OH^-(aq) \)
Set II \( Zn(OH)_2(s) \) and \( H_2O(l) \)
Set III \( Zn(OH)_2(s) \) and \( H^+(aq) \)
Set IV \( Zn(OH)_2(s) \) and \( NH_3(aq) \)

Which of the following oxides is strongly basic?

MnO\(_2\) dissolves in water to give an acid. The color of the acid is:

$Mn_2O_7$ dissolves in water to give an acid. The colour of the acid is

Fluorine reacts with dilute NaOH and forms a gaseous product \(A\). The bond angle in molecule of \(A\) is

The number of \(\pi\) and \(\pi^\ast\) \(\pi_{z}\) bonds present in \(XeO_3\) and \(XeO_4\) molecules, respectively are

The type of bonds present in sulphuric anhydride are