MEDIUM
6th CBSE
IMPORTANT
Earn 100

How is inflating a balloon different from bursting an inflated balloon? Explain.

Important Questions on Changes Around Us

MEDIUM
6th CBSE
IMPORTANT
Perfect Science 6>Chapter 6 - Changes Around Us>EXERCISES>Q E
When a candle burns, both reversible and irreversible changes take place. Explain.
MEDIUM
6th CBSE
IMPORTANT
Perfect Science 6>Chapter 6 - Changes Around Us>EXERCISES>Q E
Give an example of how expansion and cooling of materials are used to our advantage?
EASY
6th CBSE
IMPORTANT
Perfect Science 6>Chapter 6 - Changes Around Us>EXERCISES>Q E
When is a change said to have taken place? Explain with an example.
MEDIUM
6th CBSE
IMPORTANT
Perfect Science 6>Chapter 6 - Changes Around Us>EXERCISES>Q E
Is it possible the same material undergoes both reversible and irreversible changes? Give two examples.
EASY
6th CBSE
IMPORTANT
Perfect Science 6>Chapter 6 - Changes Around Us>EXERCISES>Q F
What happens if we mix sugar in the water? What type of change is it?
MEDIUM
6th CBSE
IMPORTANT
Perfect Science 6>Chapter 6 - Changes Around Us>EXERCISES>Q F
Write on a paper with a toothpick dipped in lemon juice. Dry the paper then press it with a hot iron. The letter on the paper change and dark brown. Why?