Question
Download Solution PDFBase changes the colour of the red litmus to ______.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is Blue.
- The colour of red litmus paper turns blue when it reacts with base.
Key Points
- The base is a chemical substance that donates electrons, accepts protons, or releases hydroxide (OH-) ions in aqueous solution.
- It tastes bitter and changes the colour of red litmus into blue. It reacts with acids to form salts.
- Phenolphthalein changes from colourless to pink in the presence of a basic solution.
- Litmus paper is a paper that is treated with a specific indicator which is a mixture of 10 to 15 natural dyes obtained from lichens.
- It is helpful in determining whether the solution is acidic or basic.
Additional Information
Solution | Red Litmus | Blue Litmus |
Acidic | stays red | turns red |
Basic | turns blue | stays blue |
Alkaline | turns blue | stays blue |
Last updated on Jul 8, 2025
-> The Staff Selection Commission released the SSC GD 2025 Answer Key on 26th June 2025 on the official website.
-> The SSC GD Notification 2026 will be released in October 2025 and the exam will be scheduled in the month of January and February 2026.
-> Now the total number of vacancy is 53,690. Previously, SSC GD 2025 Notification was released for 39481 Vacancies.
-> The selection process includes CBT, PET/PST, Medical Examination, and Document Verification.
-> The candidates who will be appearing for the 2026 cycle in the exam must attempt the SSC GD Constable Previous Year Papers. Also, attempt SSC GD Constable Mock Tests.