Question

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Answer 1

B) Zn + 2HCl ---> ZnCl2 + H2

C) The splinter burns off with a pop sound which indicates the evolution of H2 gas.

Answer 2

Answer:

b) Zn + HCl → ZnCl + H2( gas)

c) Holding a fire in front of the mouth of the test tube will make a pop pop sound and catch fire. Because there will be emission of hydrogen which is shown in the reaction above.