Chapter-14 Acids and Bases — Online MCQ Test
SCIENCE · Samacheer Kalvi 8th · Tamil Nadu State Board
Practice Chapter-14 Acids and Bases with a free chapter-wise online MCQ test.
This chapter covers: acid base neutralization Covers properties uses and neutralization reactions of acids and bases.
AI-generated questions from basic to board-exam level, with instant results and explanations.
Chapter-14 Acids and Bases — Important Questions & Answers
Which of the following is a common property of acids?
- A. They taste bitter
- B. They turn blue litmus red
- C. They feel soapy to touch
- D. They turn red litmus blue
Answer: B. They turn blue litmus red
Acids change blue litmus paper to red. Bitter taste and soapy feel are properties of bases.
Acids change blue litmus paper to red. Bitter taste and soapy feel are properties of bases.
Which of the following is a base?
- A. Lemon juice
- B. Vinegar
- C. Baking soda solution
- D. Tamarind juice
Answer: C. Baking soda solution
Baking soda solution is basic in nature. Lemon juice, vinegar, and tamarind juice are acidic.
Baking soda solution is basic in nature. Lemon juice, vinegar, and tamarind juice are acidic.
An antacid tablet is used to relieve acidity in the stomach because it contains:
- A. An acid that increases digestion
- B. A base that neutralizes excess acid
- C. A salt that makes the stomach stronger
- D. An indicator that changes colour
Answer: B. A base that neutralizes excess acid
Antacids are mild bases. They neutralize the excess hydrochloric acid in the stomach and give relief.
Antacids are mild bases. They neutralize the excess hydrochloric acid in the stomach and give relief.
Which statement is correct about acids and bases?
- A. Acids are bitter and bases are sour
- B. Acids turn red litmus blue
- C. Bases feel soapy and slippery
- D. Bases turn blue litmus red
Answer: C. Bases feel soapy and slippery
Bases generally feel soapy and slippery. Acids are sour and turn blue litmus red.
Bases generally feel soapy and slippery. Acids are sour and turn blue litmus red.
A substance gives the following results: it turns red litmus blue, turns turmeric reddish-brown, and feels slippery. Which one is it most likely to be?
- A. Lemon juice
- B. Vinegar
- C. Soap solution
- D. Curd
Answer: C. Soap solution
These are all properties of a base. Soap solution is a common example of a basic substance.
These are all properties of a base. Soap solution is a common example of a basic substance.