Question

what is indicator? how many types of indicator​

Answer 1

ᴀ ᴛʜɪɴɢ ᴛʜᴀᴛ ɪɴᴅɪᴄᴀᴛᴇs ᴛʜᴇ sᴛᴀᴛᴇ ᴏʀ ʟᴇᴠᴇʟ ᴏғ sᴏᴍᴇᴛʜɪɴɢ.

"ᴄᴀʀ ᴏᴡɴᴇʀsʜɪᴘ ɪs ғʀᴇϙᴜᴇɴᴛʟʏ ᴜsᴇᴅ ᴀs ᴀɴ ɪɴᴅɪᴄᴀᴛᴏʀ ᴏғ ᴀғғʟᴜᴇɴᴄᴇ"

Mᴏsᴛ ɪɴᴅɪᴄᴀᴛᴏʀs ᴀʀᴇ ᴛʜᴇᴍsᴇʟᴠᴇs ᴡᴇᴀᴋ ᴀᴄɪᴅs ᴀɴᴅ ʀᴇsᴘᴏɴᴅ ᴛᴏ ᴄʜᴀɴɢᴇs ɪɴ ᴛʜᴇ ʜʏᴅʀᴏɢᴇɴ ɪᴏɴ ᴄᴏɴᴄᴇɴᴛʀᴀᴛɪᴏɴ.

ᴘH Sᴄᴀʟᴇ ᴀɴᴅ Aᴄɪᴅ ᴀɴᴅ Bᴀsᴇ Iɴᴅɪᴄᴀᴛᴏʀs. Tʜᴇ ᴘH ʀᴀɴɢᴇ ғᴜɴᴄᴛɪᴏɴs ʙᴇᴛᴡᴇᴇɴ ⓿ ᴛᴏ ➊➍ ᴡɪᴛʜ ➐ ʙᴇɪɴɢ ɴᴇᴜᴛʀᴀʟ. ...

Lɪᴛᴍᴜs Pᴀᴘᴇʀ. ...

Pʜᴇɴᴏʟᴘʜᴛʜᴀʟᴇɪɴ Iɴᴅɪᴄᴀᴛᴏʀ. ...

Bʀᴏᴍᴏᴛʜʏᴍᴏʟ Bʟᴜᴇ Iɴᴅɪᴄᴀᴛᴏʀ. ...

Mᴇᴛʜʏʟ Rᴇᴅ Iɴᴅɪᴄᴀᴛᴏʀ. ...

Uɴɪᴠᴇʀsᴀʟ Iɴᴅɪᴄᴀᴛᴏʀ.

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Answer 2

Answer:

INDICATORS

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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

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There are 3 types of indicators》》

● Natural lndicators

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lndicators derived from natural sources are called natural indicators.

eg:- Litmus , red cabbage , turmeric , china rose petals etc..

● Synthetic indicators

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lndicators prepared in laboratary are callwd synthetic indicators.

eg:- Phenophtaline , methyl orange etc..

● Olfactory indicators

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lndicators which give different odours in acidic and basic medium.

eg:-Onion , vanila essence etc...

Explanation:

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