What is Indicators and its Classification

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What is Indicators and its Classification

Posted by Varshini Nachinarkkiniyan 5 years, 4 months ago

CBSE > Class 07 > Science

2 answers

Shubham Singh 5 years, 4 months ago

INDICATORS: An indicator is a substance that changes its colour in acidic and basic medium.An indicator shows one colour in acidic medium and different colour in basic medium so that they are called indicators. eg:-Litmus , turmeric There are 3 types of indicators: ● Natural lndicators lndicators derived from natural sources are called natural indicators. eg:- Litmus , red cabbage , turmeric , china rose petals etc.. ● Synthetic indicators lndicators prepared in laboratary are callwd synthetic indicators. eg:- Phenophtaline , methyl orange etc.. ● Olfactory indicators lndicators which give different odours in acidic and basic medium. eg:-Onion , vanila essence etc

2Thank You

Gaurav Seth 5 years, 4 months ago

INDICATORS:
An indicator is a substance that changes its colour in acidic and basic medium.An indicator shows one colour in acidic medium and different colour in basic medium so that they are called indicators.
eg:-Litmus , turmeric

There are 3 types of indicators:

● Natural lndicators
lndicators derived from natural sources are called natural indicators.
eg:- Litmus , red cabbage , turmeric , china rose petals etc..

● Synthetic indicators
lndicators prepared in laboratary are callwd synthetic indicators.
eg:- Phenophtaline , methyl orange etc..

● Olfactory indicators
lndicators which give different odours in acidic and basic medium.
eg:-Onion , vanila essence etc