Meena is performing an experiment with two substances, X and Y. When she puts a few granules of X in Y, she decides to collect Z- the gas produced, into a balloon. When she leaves the balloon, it floats in the air. Which of the following can be the substances X, Y and Z?
1
X: Tin, Y: Hydrochloric Acid, Z: Hydrogen
2
X: Mercury, Y: Nitric Acid, Z: Nitric Oxide
3
X: Copper, Y: Sulphuric Acid, Z: Hydrogen
4
X: Potassium Permanganate, Y: Hydrogen Peroxide, Z: Hydrogen