Materials Around Us Class 6 Long Question Answer
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Materials Around Us Class 6 Long Question Answer
Materials Around Us Class 6 Long Question Answer
Question 1.
Comment on solubility of gas in water.
Answer:
Some gases are soluble in water whereas others are not. Water, usually, has small quantities of some gases dissolved in it. For example, oxygen gas dissolved in water is very important for the survival of animals and plants that live in water. Carbon dioxide is dissolved in carbonated drinks.
Question 2.
Explain opaque substances with examples.
Answer:
There are some materials through which we are not able to see. These materials are called opaque. We cannot see what is kept in a closed wooden box, a cardboard carton or a metal container. Wood, cardboard and metals are examples of opaque materials.