1.

A piece of zinc (Zn) - a reactive metal - was dropped into a test tube containing a substance. A zinc salt was formed and hydrogen gas was liberated. This is shown in the equation below.Zn + _____ ----------> zinc salt + H2 gasWhich of the following can be the substance that zinc was dropped into?P) water Q) hydrochloric acid R) a solution of a zinc saltA. only P B. only Q C. only R D. either P or R

Answer»

Correct option is: B. only Q



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