The composition of aqua-regia is 

Options

A. `{:(,"Dil. HCl",:,"Conc. " HNO_(3)),(," "3,:,1):}`
B. `{:(,"Dil. HCl",:,"Conc. " HNO_(3)),(," "3,:,1):}`
C. `{:(,"Conc. HCl",:,"Conc. " HNO_(3)),(," "3,:,1):}`
D. `{:(,"Dil. HCl",:,"Dil. " HNO_(3)),(," "3,:,1):}`

Answer

c

Explanation

Conc. HCI and conc. `HNO_(3)` in 3 : 1 ratio form aqua-regia. 
Aqua-regia is a highly corrosive. fuming liquid. It can dissolve all metals even gold and platinum also.