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)	Quick lime	(i)	Setting fractured bones
(B)	Plaster of Paris	(ii)	A constituent of chewing gum
(C)	Slaked lime	(iii)	Manufacture of bleaching powder
(D)	Limestone	(iv)	Manufacture of dyestuffs

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

Answer 1

Answer: (B)

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

• Quick lime(Calcium oxide) is a key ingredient for the process of making cement. As a cheap and widely available alkali.It is also used in manufacturing of dyestuffs.
  
• POP(Plaster of Paris) has vast use in medicine. It is mainly used as a plaster to stop the movement of broken bones while they heal. It is also used in radiotherapy to make shells for patients.
  
• Slaked lime reacts with chlorine gas to produce the bleaching agent calcium hypochlorite – a common form of 'swimming pool' chlorine.Bleaching powder is produced by the action of a chlorine on slaked lime.
  
• Limestone is the raw material for the manufacture of quicklime (calcium oxide), slaked lime (calcium hydroxide), cement and mortar. It is also a constituent of chewing gum.
• Hence option B matches the correct answers.