Question

What‌ ‌is‌ ‌a‌ ‌pop‌ ‌sound‌ ‌test?‌ ‌

Answer 1

As the name suggests, the pop sound in the test shows that this test is used to detect the presence of a combustible gas, which is immediately going to catch the fire as soon as it comes in contact with sufficient heat or fire.

Complete answer: - In the question it is asked what a pop sound test is.
- By using the pop sound test we can detect the presence of hydrogen gas.
- Hydrogen gas is going to burn with pop sound due to its highly reactive nature
- To conduct this test we need the presence of the oxygen to carry out the process of combustion.
- The reaction between hydrogen gas and oxygen gas is very fast and liberates water as the product.
- The heat that we are going to create the combustion process causes the gases to expand.
- So whenever hydrogen is going to come in contact with heat it expands, and it breaks the sound barrier resulting in the hearing or listening of the pop sound.
- When metals are going to react with dilute acids they release the hydrogen gas as one of the products.

Note: We can conduct a small test by taking some amount of hydrogen gas in the test tube. We have to keep the mouth of the test tube near a burning splint. The conformation of the hydrogen gas can be made if we hear a pop sound.