Name and define the two types of indicators based on their source science class 7
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Natural Indicator: Indicators that are obtained from naturally occurring substance are called NATURAL INDICATORS. Example: litmus, turmeric, China rose, etc. Synthetic Indicator: Indicators that are made in laboratory are called SYNTHETIC INDICATORS. Example: phenolphthalein, methyl orange, etc.
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Indicators are substances that are used to test whether a substance is acidic or basic ot neutral in nature. They change their color when added to a solution containing an acidic or a basic substance.
Indicators are of two types - natural and artificial.
Naturally occurring indicators are turmeric, litmus, china rose and red cabbage.
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