Four test-tubes were taken and marked A, B, C and D respectively. 2 ml of solution of Al2(SO4)3 in water was filled in each of the four test-tubes. Clean piece of metal Zn was placed in test-tube A, clean iron nail was put in test-tube B, clean copper wire was placed in test-tube C and a clean aluminium wire was placed in test-tube D. It was observed that no change occurred in any of the test-tubes. The correct inference drawn is:
(a)	Zinc is more active than aluminium	(b)	Zinc is more active than copper
(c)	Copper is more active than aluminium	(d)	Zinc, iron and copper are less active than aluminium

Question ID - 54415 | SaraNextGen Top Answer

Four test-tubes were taken and marked A, B, C and D respectively. 2 ml of solution of Al2(SO4)3 in water was filled in each of the four test-tubes. Clean piece of metal Zn was placed in test-tube A, clean iron nail was put in test-tube B, clean copper wire was placed in test-tube C and a clean aluminium wire was placed in test-tube D. It was observed that no change occurred in any of the test-tubes. The correct inference drawn is:
(a)	Zinc is more active than aluminium	(b)	Zinc is more active than copper
(c)	Copper is more active than aluminium	(d)	Zinc, iron and copper are less active than aluminium