MEDIUM
7th CBSE
IMPORTANT
Earn 100

Why a turmeric stain on a piece of white cloth turns red when it is washed with soap?

Important Questions on Acids, Bases and Salts

HARD
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 5 - Acids, Bases and Salts>Test Your Learning Outcome>Q 5
How would you determine the acidic or basic nature of substance with a help of yellow stain from turmeric?
MEDIUM
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 5 - Acids, Bases and Salts>Test Your Learning Outcome>Q 6
What is the use of Litmus?
EASY
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 5 - Acids, Bases and Salts>Test Your Learning Outcome>Q 6
What is the use of Methyl orange?
MEDIUM
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 5 - Acids, Bases and Salts>Test Your Learning Outcome>Q 6
What is the use of phenolphthalein?
EASY
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 5 - Acids, Bases and Salts>Test Your Learning Outcome>Q 7
What happens when a drop of litmus solution is added to vinegar?
EASY
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 5 - Acids, Bases and Salts>Test Your Learning Outcome>Q 7
What happens when a drop of litmus solution is added to Limewater?
MEDIUM
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 5 - Acids, Bases and Salts>Test Your Learning Outcome>Q 7
What happens when a drop of litmus solution is added to water or syrup?
MEDIUM
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 5 - Acids, Bases and Salts>Test Your Learning Outcome>Q 8
What does pH value of a solution denote?