Question

Choose the correct answer form the alternatives given.
Match the column I with column II and mark the appropriate choice.

	Column I		Column II
(A)	$Li$	(i)	Role in biological system
(B)	$K$	(ii)	Golden yellow flame
(C)	$Na$	(iii)	Photoelectric cell
(D)	$Cs$	(iv)	Carbonate decomposes on heating

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

Answer 1

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

${Li}_{2}C{O}_3$ decomposes on heating. $K$ plays vital role in biological systems. $Na$ imparts golden yellow colour to the flame. $Cs$ is used in devising photoelectric cells.