Question

Change in colour and smell of water in some water samples? What are your reasons?

Answer 1

Listed below are some of the reasons :

1. Color changes as well as smell changes occurs in water when the water gets polluted by wastes materials or substances or by certain microbes.

2. Also, when elements like iron, lead, gets accumulated in water in large amounts, then the color as well as the smell gets changed. The color might be yellowish or reddish kind.

So, it is very necessary to drink filtered water to be protected from diseases.

Answer 2

Change in color and the smell of water in different water samples occur, due to the chemicals or minerals or microbes present in the water.  

Explanation:

• Groundwater contains a number of minerals in it. When the presence of a specific mineral is more in water, the appearance of water starts showing a unique color and exhibits a specific smell.
• Namely, water containing excessive iron tends to have a yellow tinge and distinctly smells of iron.
• Similarly, when pollutants mix with water, the color changes and smells might arise. It is hence important to filter one’s own water prior to use.

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