Match the following :
(1) Brass -- (i) Surgical instruments
(2) Stellite -- (ii) Skin ointment
(3) Lunar caustic -- (iii) Condenser tubes
(4) Calamine -- (iv) Hair dye

(a) (1)-(i), (2)-(iv), (3)-(iii), (4)-(ii)
(b) (1)-(iv), (2)-(iii), (3)-(ii), (4)-(i)
(c) (1)-(ii), (2)-(iv), (

Question

Match the following :
(1) Brass -- (i) Surgical instruments
(2) Stellite -- (ii) Skin ointment
(3) Lunar caustic -- (iii) Condenser tubes
(4) Calamine -- (iv) Hair dye

(a) (1)-(i), (2)-(iv), (3)-(iii), (4)-(ii)
(b) (1)-(iv), (2)-(iii), (3)-(ii), (4)-(i)
(c) (1)-(ii), (2)-(iv), (3)-(i), (4)-(iii)
(d) (1)-(iii), (2)-(i), (3)-(iv), (4)-(ii)

Accepted Answer

> [!TLDR]
> Brass→condenser tubes, Stellite→surgical instruments, Lunar caustic→hair dye, Calamine→skin ointment is the correct matching, giving option (d).
>
> Brass, a copper-zinc alloy prized for good thermal conductivity and corrosion resistance, is traditionally used for condenser/heat-exchanger tubes (iii). Stellite, a hard, wear- and corrosion-resistant cobalt-chromium(-tungsten) alloy, is used for surgical and cutting instruments (i) that must retain a sharp edge and resist corrosion from sterilisation. Lunar caustic is the traditional name for fused silver nitrate, $AgNO_3$; besides its cauterising use, silver nitrate solutions were historically used to blacken and dye hair (iv), since reduced silver deposits darken the hair shaft. Calamine, a zinc-based preparation (zinc oxide/carbonate), is the acti …

Q.Match the following :

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