A STUDENT ADDED DIL HCL TO A TEST TUBE CONTAINING Zn GRANUELS AND MADE FOLLOWING OBSERVATIONS:-
1.THE SURFACE OF Zn BECOMES BLACK
2.A GAS EVOLVED WHICH BURNED WITH A POP SOUND
3.THE SOLUTIN REMAINS COLOURLESS
WHICH OF THEM ARE TRUE
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A colour less gas is evolved which burns with a pop sound is hydrogen gas
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