Question

define lactometer and it's use​

Answer 1

Answer:

Lactometer is a small glass instrument that is used to test the purity of the milk. It works on the principle of specific gravity of milk (Archimede's Principle). It measures the relative density of milk with respect to water. If the specific gravity of a sample of milk is within the approved ranges, the milk is pure.

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Answer 2

★ʟᴀᴄᴛᴏᴍᴇᴛᴇʀ ɪs ᴀ sᴍᴀʟʟ ɢʟᴀss ɪɴsᴛʀᴜᴍᴇɴᴛ ᴛʜᴀᴛ ɪs ᴜsᴇᴅ ᴛᴏ ᴛᴇsᴛ ᴛʜᴇ ᴘᴜʀɪᴛʏ ᴏғ ᴛʜᴇ ᴍɪʟᴋ. ɪᴛ ᴡᴏʀᴋs ᴏɴ ᴛʜᴇ ᴘʀɪɴᴄɪᴘʟᴇ ᴏғ sᴘᴇᴄɪғɪᴄ ɢʀᴀᴠɪᴛʏ ᴏғ ᴍɪʟᴋ (ᴀʀᴄʜɪᴍᴇᴅᴇ's ᴘʀɪɴᴄɪᴘʟᴇ). ɪᴛ ᴍᴇᴀsᴜʀᴇs ᴛʜᴇ ʀᴇʟᴀᴛɪᴠᴇ ᴅᴇɴsɪᴛʏ ᴏғ ᴍɪʟᴋ ᴡɪᴛʜ ʀᴇsᴘᴇᴄᴛ ᴛᴏ ᴡᴀᴛᴇʀ. ɪғ ᴛʜᴇ sᴘᴇᴄɪғɪᴄ ɢʀᴀᴠɪᴛʏ ᴏғ ᴀ sᴀᴍᴘʟᴇ ᴏғ ᴍɪʟᴋ ɪs ᴡɪᴛʜɪɴ ᴛʜᴇ ᴀᴘᴘʀᴏᴠᴇᴅ ʀᴀɴɢᴇs, ᴛʜᴇ ᴍɪʟᴋ ɪs ᴘᴜʀᴇ.