Question

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

	Column I		Column II
(A)	Borax - bead	(i)	Alum
(B)	Inorganic benzene	(ii)	Diborane
(C)	Antiseptic	(iii)	Metaborate
(D)	Bridged hydrogens	(iv)	Borazine

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

Answer 1

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

Answer:- (B) $\left(A\right)\to \left(iii\right),\left(B\right)\to \left(iv\right),\left(C\right)\to \left(i\right),\left(D\right)\to \left(ii\right)$

(A) Borax-bead $\to$ Borax on heating gives metaborate which is used in borax bead test $\left(iii\right)$.

(B) Inorganic benzene $\to$ Borazine is known as inorganic benzene due to it's isoelectronic and isostructural properties to organic benzene $\left(iv\right)$.

(C) Antiseptic $\to$ As a natural astringent and antiseptic, alum block helps to cleanse and tighten the skin and close the pores, which helps to prevent razor burn and alleviate irritation. As it tightens the skin, alum block also helps to close up any minor nicks or cuts. Thus, used as an antiseptic $\left(i\right)$.

(D) Bridged hydrogens $\to$ The bridged hydrogens are present in $B_2{H}_6$. It is a 3centered - 2electron bond ..ie 3 atoms share one pair of electrons $\left(ii\right)$.