Here are 10 One-Word Answer Type Questions from the topic Acids and Bases (from your provided PDF), with answers and explanations after each question as requested:
One-Word Answer Type Questions
Topic: Acids and Bases
1. Question: What is the taste of substances that contain acids?
• Answer: Sour
• Explanation: Acids have a sour taste, like lemon juice, vinegar, and curd.
2. Question: What is the taste of substances that contain bases?
• Answer: Bitter
• Explanation: Bases taste bitter and feel soapy to touch.
3. Question: What colour does blue litmus turn in acid?
• Answer: Red
• Explanation: Acids turn blue litmus paper red.
4. Question: What colour does red litmus turn in base?
• Answer: Blue
• Explanation: Bases turn red litmus paper blue.
5. Question: Name one base used in antacids.
• Answer: Magnesium
• Explanation: Magnesium hydroxide is a base used in antacid medicines to neutralise stomach acid.
6. Question: Name one acid present in curd.
• Answer: Lactic
• Explanation: Lactic acid is present in curd, giving it a sour taste.
7. Question: What is formed when acid reacts with a base?
• Answer: Salt
• Explanation: A salt and water are formed when an acid reacts with a base.
8. Question: Which acid is found in vinegar?
• Answer: Acetic
• Explanation: Vinegar contains acetic acid, responsible for its sour taste.
9. Question: What is the chemical nature of soap?
• Answer: Basic
• Explanation: Soaps are basic in nature and feel slippery to touch.
10. Question: Which acid is present in citrus fruits?
• Answer: Citric
• Explanation: Citrus fruits like lemon and orange contain citric acid.
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