p-Block Elements

Assertion (A) HCl gas is dried by passing through concentrated H\(_2\)SO\(_4\).
Reason (R) HCl gas reacts with NH\(_3\) that gives white fumes.

Identify the correct statements about boron.
I. It has high melting point.
II. It has high density.
III. It has high electrical conductivity.
IV. B-10 isotope of it has high ability to absorb neutrons.

Among \(\mathrm{P}_4, \mathrm{~S}_8\) and \(\mathrm{N}_2\) the elements which undergo disproportionation when heated with NaOH solution.

Which of the following is formed when \(\mathrm{SO}_3\) is absorbed by concentrated \(\mathrm{H}_2 \mathrm{SO}_4\) ?

Identify the correct statements about the anomalous behaviour of boron.
I. Boron trihalides can form dimeric structures.
II. Boron shows +1 as stable oxidation state.
III. Maximum covalency of boron is four.
IV. Boron does not form $$\mathr...

What would be the product of following reaction?
\(\mathrm{SiCl}_4 \stackrel{\text { Excess of } \mathrm{H}_2 \mathrm{O}}{\longrightarrow} \text { ? (Major product) }\)

In the following reactions (i) and (ii), the number of moles of chlorine gas released respectively are
(i) \(\mathrm{MnO}_2+4 \mathrm{HCl} \longrightarrow\)
(ii) \(\mathrm{KMnO}_4+16 \mathrm{HCl} \longrightarrow\)

The correct order of acidic character of the following is

Xenon best reacts with

\(\mathrm{H}_3 \mathrm{BO}_3\) or \(\mathrm{B}(\mathrm{OH})_3\) is considered as an acid because its molecule

Match the following compounds with their corresponding physical properties.

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Identify (P) and (Q) in the following reaction.