HARD
7th CBSE
IMPORTANT
Earn 100

What is neutralisation? How is neutralisation helpful in the treatment of indigestion?

Important Questions on Acids, Bases and Salts

MEDIUM
7th CBSE
IMPORTANT
Science Booster>Chapter 6 - Acids, Bases and Salts>PRACTICE TIME>Q D
Why is it wise to neutralise the factory wastes before disposing them into rivers or lakes?
MEDIUM
7th CBSE
IMPORTANT
Science Booster>Chapter 6 - Acids, Bases and Salts>PRACTICE TIME>Q D
What are salts? What are their uses? Name some salts commonly used in a laboratory.
HARD
7th CBSE
IMPORTANT
Science Booster>Chapter 6 - Acids, Bases and Salts>PRACTICE TIME>Q D
Why does the pain caused due to an ant’s sting get relieved by rubbing baking soda solution at the place of sting?
MEDIUM
7th CBSE
IMPORTANT
Science Booster>Chapter 6 - Acids, Bases and Salts>PRACTICE TIME>Q E
Describe an activity to show that an acid neutralises the property of a base.
MEDIUM
7th CBSE
IMPORTANT
Science Booster>Chapter 6 - Acids, Bases and Salts>PRACTICE TIME>Q E
List the differences between an acid and a base.
MEDIUM
7th CBSE
IMPORTANT
Science Booster>Chapter 6 - Acids, Bases and Salts>PRACTICE TIME>Q E
How would you prepare a china rose indicator and use it to test the nature of different substances?
HARD
7th CBSE
IMPORTANT
Science Booster>Chapter 6 - Acids, Bases and Salts>PRACTICE TIME>Q F

You were provided with five solutions labeled as A, B, C, D and E to test them with natural indicators, blue and red litmus papers. You noted down your observations in the table given on the next page. Think and answer the following questions:

Solution Blue litmus Red litmus
A Red Red
B Red Red
C Blue  Blue
D Blue Red
E Red Red

Which solution is a base? Which solution is neutral? How many acids have been tested?

 

HARD
7th CBSE
IMPORTANT
Science Booster>Chapter 6 - Acids, Bases and Salts>PRACTICE TIME>Q F

You were provided with five solutions labelled as A, B, C, D and E to test them with natural indicators, blue and red litmus papers. You noted down your observations in the table given on next page. Think and answer the following questions:

Solution Blue litmus Red litmus
A Red Red
B Red Red
C Blue  Blue
D Blue Red
E Red Red

What would be the colour of turmeric paper indicator in solution C?