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A student added dilute HCL to a test tub...

A student added dilute HCL to a test tube containing Zn granules and made following observations. 1)The Zn surface became dull and black. 2 ) A gas evolved which burnt with a pop sound 3) the solution remained colorless

A

1,2

B

2,3

C

1,3

D

All the above

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