MEDIUM
7th CBSE
IMPORTANT
Earn 100

Account for each of the following: When an ant bites, baking soda is rubbed on the skin.

Important Questions on Different Kinds of Materials

MEDIUM
7th CBSE
IMPORTANT
Start Up Science 7>Chapter 5 - Different Kinds of Materials>EXERCISES FOR FORMATIVE AND SUMMATIVE ASSESSMENT>Q A
Account for each of the following: Quicklime is added to acidic soil.
MEDIUM
7th CBSE
IMPORTANT
Start Up Science 7>Chapter 5 - Different Kinds of Materials>EXERCISES FOR FORMATIVE AND SUMMATIVE ASSESSMENT>Q A
Account for each of the following:
When one suffers from acidity, he/she is advised to take an antacid tablet.
MEDIUM
7th CBSE
IMPORTANT
Start Up Science 7>Chapter 5 - Different Kinds of Materials>EXERCISES FOR FORMATIVE AND SUMMATIVE ASSESSMENT>Q B
Differentiate between acidic and basic substances.
MEDIUM
7th CBSE
IMPORTANT
Start Up Science 7>Chapter 5 - Different Kinds of Materials>EXERCISES FOR FORMATIVE AND SUMMATIVE ASSESSMENT>Q B
What are indicators? Give examples.
MEDIUM
7th CBSE
IMPORTANT
Start Up Science 7>Chapter 5 - Different Kinds of Materials>EXERCISES FOR FORMATIVE AND SUMMATIVE ASSESSMENT>Q B
Window cleaning solution contains ammonium hydroxide. When a drop of this solution is put on red litmus paper, it turns blue. Explain.
MEDIUM
7th CBSE
IMPORTANT
Start Up Science 7>Chapter 5 - Different Kinds of Materials>EXERCISES FOR FORMATIVE AND SUMMATIVE ASSESSMENT>Q B
Why do you need indicators?
MEDIUM
7th CBSE
IMPORTANT
Start Up Science 7>Chapter 5 - Different Kinds of Materials>EXERCISES FOR FORMATIVE AND SUMMATIVE ASSESSMENT>Q B
How is China rose indicator prepared?
MEDIUM
7th CBSE
IMPORTANT
Start Up Science 7>Chapter 5 - Different Kinds of Materials>EXERCISES FOR FORMATIVE AND SUMMATIVE ASSESSMENT>Q B
Sodium chloride salt is used for cooking. It is formed when hydrochloric acid is added to sodium hydroxide solution, both of which are corrosive in nature. But sodium chloride is not. Give reasons.