MEDIUM
7th CBSE
IMPORTANT
Earn 100

Match the columns A and B.
               A                     B
(a) Sodium iodate (i) A food preservative
(b) Calcium sulphate (ii) Used as a fertilizer
(c) Bleaching powder (iii) Present in plaster of Paris
(d) Ammonium sulphate (iv) A disinfectant
(e) Sodium benzoate (v) A supplement to common salt

 

Important Questions on Acids, Bases and Salts

EASY
7th CBSE
IMPORTANT
Basic Science For Class 7>Chapter 2 - Acids, Bases and Salts>Exercises>Q A

Classify the following substances into acidic and basic substances.

Tomato juice, soap solution, toothpaste, lemon juice, vinegar

EASY
7th CBSE
IMPORTANT
Basic Science For Class 7>Chapter 2 - Acids, Bases and Salts>Exercises>Q A
Name three mineral acids and give their formulae.
EASY
7th CBSE
IMPORTANT
Basic Science For Class 7>Chapter 2 - Acids, Bases and Salts>Exercises>Q A
Define acids.
EASY
7th CBSE
IMPORTANT
Basic Science For Class 7>Chapter 2 - Acids, Bases and Salts>Exercises>Q A
Define bases.
EASY
7th CBSE
IMPORTANT
Basic Science For Class 7>Chapter 2 - Acids, Bases and Salts>Exercises>Q A
What are soluble bases called? Give two examples.
EASY
7th CBSE
IMPORTANT
Basic Science For Class 7>Chapter 2 - Acids, Bases and Salts>Exercises>Q A
Define neutral substances.
MEDIUM
7th CBSE
IMPORTANT
Basic Science For Class 7>Chapter 2 - Acids, Bases and Salts>Exercises>Q B
Name an acidic gas which is discharged into the atmosphere on the burning of fuels like coal and natural gas. How is this gas formed?
MEDIUM
7th CBSE
IMPORTANT
Basic Science For Class 7>Chapter 2 - Acids, Bases and Salts>Exercises>Q B
What are the general properties of basic substances?