Class 7 Science
Chapter 5: Acids, Bases and Salts
MCQs and Practice Worksheet
Part A: Multiple Choice Questions (MCQs)
Q1. Which of the following tastes sour?
A. Soap
B. Lemon juice
C. Baking soda
D. Washing soda
Answer: B
Q2. Which of the following is a base?
A. Vinegar
B. Lemon juice
C. Soap solution
D. Orange juice
Answer: C
Q3. Which indicator turns red in acidic solution?
A. Red litmus
B. Blue litmus
C. Turmeric
D. China rose
Answer: B
Q4. Which substance is neutral?
A. Vinegar
B. Soap solution
C. Common salt solution
D. Lemon juice
Answer: C
Q5. Which indicator is obtained from plants?
A. Phenolphthalein
B. Litmus
C. Methyl orange
D. Hydrochloric acid
Answer: B
Q6. Which of the following is a salt?
A. Soap
B. Vinegar
C. Baking soda
D. Common salt
Answer: D
Part B: Practice Worksheet
1. Fill in the blanks:
- Acids taste __________.
- Bases taste __________.
- Blue litmus turns __________ in acid.
- Common salt is a __________.
2. Very Short Answer:
(a) Name one natural indicator.
(b) Name one acid found in fruits.
(c) What is formed when an acid reacts with a base?
3. Short Answer:
(a) What happens when turmeric is added to a base?
(b) Write two examples of bases.
4. Long Answer:
Explain acids, bases, and salts with examples.
Answer Key (For Teachers & Parents)
Fill in the blanks:
- Sour
- Bitter
- Red
- Salt
Very Short Answers:
- Litmus
- Citric acid
- Salt and water
Shaktimatha CBSE Learning
Class 7 Science – Chapter 5: MCQs & Worksheet
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