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10All substances can be safely identified by tasting them.
Some substances may be harmful to taste.
Indicator is used to identify acid, base or salt.
Litmus paper is an example of indicator.
Indicator does not change its color.
Methyl orange is a simple indicator.
Phenolphthalein is used as an indicator.
Indicator helps to identify properties of substances.
Indicators are chemical substances.
It is always safe to taste unknown substances.
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Indicator is used to identify:
Which of the following is an indicator?
Indicators change their:
Which is a simple indicator?
It is not safe to identify substances by:
Phenolphthalein is used to test:
Indicator is a:
Indicator helps to study the:
Litmus paper is used to test:
Indicator changes color in:
It is not easy to identify all substances by ______.
Some substances may be ______ to our body.
Indicator is a ______ substance.
Indicator helps to identify acid, ______ or salt.
Litmus paper is an example of ______.
Indicator changes its ______.
Methyl orange is a simple ______.
Phenolphthalein is used as an ______.
Indicator helps to study the ______ of substances.
We should not ______ unknown substances.