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प्रश्न
Three liquids are given to you. One is hydrochloric acid, another is sodium hydroxide and the third is a sugar solution. How will you identify them? You have only turmeric indicator.
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उत्तर
Test the liquids one by one by placing a few drops of the three liquids on the turmeric indicator.
- If yellow colour is obtained then the liquid will be hydrochloric acid.
- If red or pink colour is obtained then it will be sodium hydroxide.
- If there is no change then it is a sugar solution.
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संबंधित प्रश्न
What colour does the following indicator turn when added to an acid (such as hydrochloric acid)?
Litmus
Onion and vanilla extract are ______ indicators.
The indicators which turn red in acid solution are ______.
Alkalis have a pH ______ than 7.
Neutral substances have a pH of ______.
What would you expect the pH of pure water to be?
A solution turns blue litmus red. Its pH is likely to be ______.
Assertion: Methyl orange and phenolphthalein are natural indicators.
Reason: Methyl orange is yellow in colour while phenolphthalein is pink.
What is the colour of phenolphthalein in the basic solution?
Take some lemon juice in a tumbler and add baking soda slowly. What do you see? What do you infer from this?
