MEDIUM
7th CBSE
IMPORTANT
Earn 100

Choose the odd-one-out giving reason:
 Acids, Bitter taste, Soapy, Bases, Caustic soda

Important Questions on Acids, Bases and Salts

EASY
7th CBSE
IMPORTANT
Science 7>Chapter 5 - Acids, Bases and Salts>Summative ASSESSMENT>Q 1
Define: Mineral acids 
 
MEDIUM
7th CBSE
IMPORTANT
Science 7>Chapter 5 - Acids, Bases and Salts>Summative ASSESSMENT>Q 2
Define: Acid-base indicators 
 
EASY
7th CBSE
IMPORTANT
Science 7>Chapter 5 - Acids, Bases and Salts>Summative ASSESSMENT>Q 3
Define: Natural and synthetic indicators
 
MEDIUM
7th CBSE
IMPORTANT
Science 7>Chapter 5 - Acids, Bases and Salts>Summative ASSESSMENT>Q 4
Define: Neutralisation reaction 
HARD
7th CBSE
IMPORTANT
Science 7>Chapter 5 - Acids, Bases and Salts>Summative ASSESSMENT>Q 5
Define: Treatment of indigestion
HARD
7th CBSE
IMPORTANT
Science 7>Chapter 5 - Acids, Bases and Salts>Summative ASSESSMENT>Q 1

The observations made during an experiment are recorded below:

Solution A B C D
Blue litmus Reddish  Deep Red  No change  Mauve
Red litmus  No change    No change    Blue  

 Mauve

 (i) Which of these is Strongly acidic, Weakly acidic, Neutral, Basic?
(ii) Which of the two solutions will react to illustrate the neutralisation reaction?
 

HARD
7th CBSE
IMPORTANT
Science 7>Chapter 5 - Acids, Bases and Salts>Summative ASSESSMENT>Q 2
Turmeric stains on white clothes are yellow. These stains turn red when such clothes are washed with soap. Give a reason for it.
EASY
7th CBSE
IMPORTANT
Science 7>Chapter 5 - Acids, Bases and Salts>FORMATIVE & SUMMATIVE ASSESSMENTS>Q 1
The acid present in curd/ sour milk is