Question

explain any3 natural indicated​

Answer 1

Answer:

Many plants contain their own indicators – turmeric, red cabbage juice and beetroot juice are three good examples. Other examples are tea and red grape juice. Hydrangea flowers are different colours depending on whether the soil is acid or alkali. In acid soil they are blue and in alkaline soil they are red!

Explanation:

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Answer 2

Question:

Explain any 3 natural indicators.

Answer:

Natural indicators are those indicators that are obtained from nature such as obtaining from flowers, roots, stems etc.

Explanation of 3 natural indicators-

Turmeric:

• Turmeric is one of the natural indicator.
• It is used in the the form of turmeric paper.
• Tumeric paper turns reddish-brown when it is tested with bases and there is no change in colour when tested with acids or neutral substances.

China rose:

• China rose is the natural indicator which is prepared by boiling the petals of the china rose and the apply that paste on the paper.
• It turns to dark pink when tested with acids and turns green when tested with bases.
• It shows no change when tested with neutral substances.

Litmus:

• Litmus is obtained from lichens.
• We use red or blue litmus paper to recognize whether the substance is acidic or basic.
• Blue litmus turns red when tested with acidic substance and red litmus turns blue when tested with basic substance.

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