Seema Saini Solutions for Chapter: p-Block Group 14 (The Carbon Family), Exercise 2: DPP

Which of the following carbides on treatment with water give methane?

Which of the metal oxides are reduced by $\mathrm{CO}$?

Which of the following statement is/are incorrect regarding the compounds of carbon family elements?

Select compound which is/are isoelectronic with ${\mathrm{Si}}_3{\mathrm{O}}_9^{6-}$ type cyclic silicate.

Which of the following is/are produced by the hydrolysis of ${\left({\mathrm{CH}}_3\right)}_2{\mathrm{SiCl}}_2?$

Identify (X) to (Z) in the following sequence of reactions:

$\mathrm{BeO}+\mathrm{C}\stackrel{2000°\mathrm{C}}{⟶}\left(\mathrm{X}\right)\stackrel{\text{ dil.acid }}{⟶}\left(\mathrm{Y}\right)+\left(\mathrm{Z}\right)$

Solid compounds of carbon with elements other than hydrogen are generally called carbides. Carbides are of three types: (i) ionic or salt like carbides; (ii) interstitial carbides, formed by transition metals in which carbon atoms occupy tetrahedral holes in the closed packed arrays of metal atoms, these are generally very hard and very high melting solids; and (iii) covalent hydrides are formed by metalloids like Si, B, etc.

Identify (X) to (Z) in the following sequence of reactions:

${\mathrm{Mg}}_2{\mathrm{C}}_3$ on hydrolysis in the presence of acid gives a major product $\left(\mathrm{X}\right)$. The product is: