Class 10
#acids-basesCase Study

Indicators and Reactions

Practice a Class 10 Science case study on acids, bases, litmus, and hydrogen gas.

Indicators and Reactions

A student tests four solutions with blue and red litmus paper. Solution A turns blue litmus red, Solution B turns red litmus blue, Solution C shows no change, and Solution D reacts with zinc to produce a gas.

Question: Which solutions are acidic and basic? Explain the gas evolved from Solution D.

Select an option first. The solution will unlock after your attempt.
FAQ

How does litmus identify acids and bases?

Acids turn blue litmus red, while bases turn red litmus blue.

Quick Learning Notes

Start with the question, try the answer once, then open the solution. Use the FAQ to clear the common confusion before moving to the next tag.

Common mistake: Students often reverse the litmus colour changes for acids and bases.

Class 10 Acids Bases Case Study - Litmus Test

Practice a Class 10 chemistry case study on litmus tests and reactions with zinc.

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