A sample of soil is mixed with water and allowed to settle. The clear supernatant solution turns the pH paper yellowish-orange. Which of the following would change the colour of this pH paper to greenish-blue?
A fruit juice is tested for its pH value. What could be its possible pH if the colour is changed to yellow?
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Which of the following will be the strongest base?
Four student (a), (b), (c) and (d) measured the pH values of water, lemon juice and sodium bicarbonate solution. What is the correct decreasing order of pH values?
A student dipped a pH paper in an unknown liquid. Orange colour was obtained. The unknown solution can be:
A drop of solution ‘X’ is placed on a strip of pH paper. A deep red colour is produced. The solution ‘X’ is:
The pH of a solution which is neither acidic nor basic is:
11 videos|50 docs|17 tests
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11 videos|50 docs|17 tests
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