Three test tubes are taken and marked as .X., .Y. and .Z.. In test tube X, iron nail is dipped in water. In test tube Y, iron nail is dipped in mixture of water and oil. In test tube Z, iron nail is added with dry CaCl_(2). In which test tube, the iron nail will rust ? Why ?

Three test tubes are taken and marked as .X., .Y. and .Z.. In test tub

1.	Three test tubes are taken and marked as .X., .Y. and .Z.. In test tube X, iron nail is dipped in water. In test tube Y, iron nail is dipped in mixture of water and oil. In test tube Z, iron nail is added with dry CaCl_(2). In which test tube, the iron nail will rust ? Why ?
Answer» SOLUTION :The iron NAIL will RUST in TEST tube X, because it provides the essential moist conditions for rusting SINCE both moisture as well as air is present in the test tube.