Question

match the column I with column II and mark the appropriate choice.

	Column I		Column II
(A)	Galena	(i)	Abrasive
(B)	Diamond	(ii)	Metal carbonyls
(C)	Carbon monoxide	(iii)	Hydrides of Si
(D)	Silanes	(iv)	An ore of lead

• A. $\left(A\right)\to \left(iv\right),\left(B\right)\to \left(ii\right),\left(C\right)\to \left(i\right),\left(D\right)\to \left(iii\right)$
• B. $A)\to (iv),(B)\to (i),(C)\to (ii),(D)\to (iii)$
• C. $A)\to (ii),(B)\to (i),(C)\to (iii),(D)\to (iv)$
• D. $A)\to (i),(B)\to (ii),(C)\to (iii),(D)\to (iv)$

Answer 1

The correct option is B $A)\to (iv),(B)\to (i),(C)\to (ii),(D)\to (iii)$

Answer:-

(A) Galena $\to$ Galena, also called lead glance, is the natural mineral form of lead(II) sulfide $\left(PbS\right)$. It is the most important ore of lead $\Rightarrow \left(iv\right)\text{An ore of lead}$.

(B) Diamond $\to$ Since diamonds are very hard (ten on the Mohs scale) they are often used as an abrasive $\Rightarrow \left(i\right)\text{Abrasive}$.

(C) Carbon monoxide $\to$ Metal carbonyls are coordination complexes of transition metals with carbon monoxide ligands $\Rightarrow \left(ii\right)\text{Metal Carbonyls}$.

(D) Silanes $\to$ Silane is an inorganic compound with chemical formula, $Si{H}_4\Rightarrow \left(iii\right)\text{Hydrides of Si}$.