Exploring Acids and Bases
Full explanation, worked examples & memory tricks in the app
Exploring Acids and Bases
English 6 leveled MCQs Free
Shared by a Veda learner · Generated with Veda AI
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6 marks Long answer
How can natural indicators be prepared? Explain by giving an example.
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Natural indicators can be prepared from plants; for example, red rose extract is made by washing, crushing, and filtering rose petals in hot water.
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6 marks Long answer
Three liquids are given to you. One is vinegar, another is a baking soda solution, and the third is a sugar solution. Can you identify them only using turmeric paper? Explain?
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Baking soda turns turmeric red, vinegar has no effect but has a suffocating smell, and sugar solution is odourless and has no effect.
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4 marks Medium answer
Manya is blindfolded. She is given two unknown solutions to test and determine whether they are acidic or basic. Which indicator should Manya use to test the solution and why?
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Manya should use an olfactory indicator like onion or vanilla extract.
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4 marks Medium answer
Grape juice was mixed with red rose extract. The mixture got a tint of red rose colour. What will happen if baking soda is added to this mixture? Justify the answer.
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The mixture becomes neutral when baking soda is added.
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4 marks Medium answer
The extract of red rose turns the liquid X to green. What will be the nature of liquid X? What will happen when excess of amla juice is added to liquid X?
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Liquid X is a base; adding excess amla juice makes it neutral.
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2 marks Short answer
Keerthi wrote a secret message to her grandmother on her birthday using orange juice. Can you assist her grandmother in revealing the message? Which indicator would you use to make it visible?
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Use indicators such as red rose extract to reveal the message.
The full exam-length answer is in the app.
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