Question

Write a test to identify the gas evolved (if any) during the reaction of these metals with water.

State two ways to prevent the rusting of iron.

Eight identical, iron blocks are placed on the ground in the two arrangements X and Y as shown below. The block arrangements are kept moist by sprinkling water every few hours Which of the arrangements is likely to gather more rust after ten days? Justify your answer.

A piece of iron rusts when it comes in contact with air and moisture. Prakash had two identical shiny iron pieces P and Q. To prevent the pieces from rusting, he coated piece P with oil paint and he galvanized piece Q with a coat of zinc metal. He noticed that the coatings were not complete and that a small part of the iron was exposed in both the pieces. What is Prakash likely to observe about the exposed parts of the two iron pieces after some days? Explain why.