Question

A piece of calcium metal is put in a trough of water there is above effervescence and white
turbidity is formed. Answer the following questions.
i) Name the gas formed in the reaction.
it) Write a balanced equation for the reaction. iil) Why does the solution turns turbid.

Answer 1

Hydrogen gas, It can be tested by litmus paper as it turns blue from red.

When a mixture (A) of unknown gases is passed into the dichromate solution, then orange color turns to green; when the solution is boiled and gas passed into lime water, then lime water turns milky. Find out (A).