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प्रश्न
‘Litmus’, a natural dye is an extract of which of the following?
विकल्प
China rose (Gudhal)
Beetroot
Lichen
Blue berries (Jamun)
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उत्तर
Lichen
Explanation:
Litmus, a natural dye used as an indicator is extracted from lichen.
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संबंधित प्रश्न
Explain why An antacid tablet is taken when you suffer from acidity.
Explain why Calamine solution is applied on the skin when an ant bites.
Explain why factory waste is neutralised before disposing it into the water bodies.
What is a neutralization reaction?
State whether the following statement is true or false. Correct the false statement.
Common salt dissolved in water turns blue litmus red.
State whether the following statement is true or false. Correct the false statement.
Calamine can be used to treat ant’s sting.
You are provided with three test tubes A, B and C as shown in figure with different liquids. What will you observe when you put
- a piece of blue litmus paper in each test tube.
- a piece of red litmus paper in each test tube.
- a few drops of phenolphthalein solution to each test tube.
Explain two neutralisation reactions related to daily life situation.
Which chemical is used to neutralize the acidic soil?
Visit a doctor. Find out the medicines, he prescribes to treat acidity. Ask him how acidity can be prevented.
