MEDIUM
7th CBSE
IMPORTANT
Earn 100

Describe the following properties of a base: Taste and Touch.

Important Questions on Acids, Bases and Salts

EASY
7th CBSE
IMPORTANT
Science 7>Chapter 5 - Acids, Bases and Salts>Oral Questions>Q 3
Name a base used in making an antacid. (Sodium hydroxide / Magnesium hydroxide)
HARD
7th CBSE
IMPORTANT
Science 7>Chapter 5 - Acids, Bases and Salts>Oral Questions>Q 4
Name a base used for the softening of water. (Calcium hydroxide/ magnesium hydroxide)
EASY
7th CBSE
IMPORTANT
Science 7>Chapter 5 - Acids, Bases and Salts>Oral Questions>Q 1
 Name a naturally-occurring indicator.
EASY
7th CBSE
IMPORTANT
Science 7>Chapter 5 - Acids, Bases and Salts>Oral Questions>Q 2
Name a synthetic indicator.
HARD
7th CBSE
IMPORTANT
Science 7>Chapter 5 - Acids, Bases and Salts>Oral Questions>Q 3
Write the original colour of the China Red rose indicator.
MEDIUM
7th CBSE
IMPORTANT
Science 7>Chapter 5 - Acids, Bases and Salts>Oral Questions>Q 4
Name the source of the red cabbage juice. (White cabbage/ Red cabbage/ Green cabbage)
HARD
7th CBSE
IMPORTANT
Science 7>Chapter 5 - Acids, Bases and Salts>Oral Questions>Q 5
What is the colour of this indicator in (a) Neutral (b) Acidic (c) Basic solution?
Red litmus 
 
HARD
7th CBSE
IMPORTANT
Science 7>Chapter 5 - Acids, Bases and Salts>Oral Questions>Q 5
What is the colour of this indicator in (a) Neutral (b) Acidic (c) Basic solution?
Blue litmus