1.

Which one is a combination reaction?

A.  Formation of a mixture of carbon monoxide and hydrogen. When steam is passed over red hot iron.
B.  Reaction of water with sodium metal to form sodium hydroxide and hydrogen.
C.  \[Ca{{(OH)}_{2}}+N{{a}_{2}}C{{O}_{3}}\to 2NaOH+CaC{{O}_{3}}\downarrow \]
D.  Preparation of stannic chloride (Tin (iv) chloride) by passing chlorine gas into molten tin (Sn).  
Answer» E.


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