20. Explain the following terms with one example each.
(a) Corrosion
(b) Rancidity
Answers
Answer:
Hi!!
● Corrosion
Damage caused to metal, stone, or other materials by corrosion.
"engineers found the corrosion when checking the bridge"
● Rancidity
Rancidity is a very general term and in its most general meaning, it refers to the spoilage of a food in such a way that it becomes undesirable (and usually unsafe) for consumption.
An example of rancidity is when a chips pack is exposed to atmospheric air which results in a change in taste and odor.
Hope it helps ❤️❤️❤️
ᴄᴏʀʀᴏsɪᴏɴ:
ᴄᴏʀʀᴏsɪᴏɴ ɪs ᴅᴇғɪɴᴇᴅ ᴀs ᴀ ᴘʀᴏᴄᴇss ᴡʜᴇʀᴇ ᴍᴀᴛᴇʀɪᴀʟs, ᴜsᴜᴀʟʟʏ ᴍᴇᴛᴀʟs, ᴅᴇᴛᴇʀɪᴏʀᴀᴛᴇ ᴀs ᴀ ʀᴇsᴜʟᴛ ᴏғ ᴀ ᴄʜᴇᴍɪᴄᴀʟ ʀᴇᴀᴄᴛɪᴏɴ ᴡɪᴛʜ ᴀɪʀ, ᴍᴏɪsᴛᴜʀᴇ, ᴄʜᴇᴍɪᴄᴀʟs, ᴇᴛᴄ.
ғᴏʀ ᴇxᴀᴍᴘʟᴇ, ɪʀᴏɴ, ɪɴ ᴛʜᴇ ᴘʀᴇsᴇɴᴄᴇ ᴏғ ᴍᴏɪsᴛᴜʀᴇ, ʀᴇᴀᴄᴛs ᴡɪᴛʜ ᴏxʏɢᴇɴ ᴛᴏ ғᴏʀᴍ ʜʏᴅʀᴀᴛᴇᴅ ɪʀᴏɴ ᴏxɪᴅᴇ.
ᴛʜɪs ʜʏᴅʀᴀᴛᴇᴅ ɪʀᴏɴ ᴏxɪᴅᴇ ɪs ʀᴜsᴛ.
(ʙ) ʀᴀɴᴄɪᴅɪᴛʏ:
ᴛʜᴇ ᴘʀᴏᴄᴇss ᴏғ ᴏxɪᴅᴀᴛɪᴏɴ ᴏғ ғᴀᴛs ᴀɴᴅ ᴏɪʟs ᴛʜᴀᴛ ᴄᴀɴ ʙᴇ ᴇᴀsɪʟʏ ɴᴏᴛɪᴄᴇᴅ ʙʏ ᴛʜᴇ ᴄʜᴀɴɢᴇ ɪɴ ᴛᴀsᴛᴇ ᴀɴᴅ sᴍᴇʟʟ ɪs ᴋɴᴏᴡɴ ᴀs ʀᴀɴᴄɪᴅɪᴛʏ.
ғᴏʀ ᴇxᴀᴍᴘʟᴇ, ᴛʜᴇ ᴛᴀsᴛᴇ ᴀɴᴅ sᴍᴇʟʟ ᴏғ ʙᴜᴛᴛᴇʀ ᴄʜᴀɴɢᴇs ᴡʜᴇɴ ᴋᴇᴘᴛ ғᴏʀ ʟᴏɴɢ.
ʀᴀɴᴄɪᴅɪᴛʏ ᴄᴀɴ ʙᴇ ᴀᴠᴏɪᴅᴇᴅ ʙʏ:
1. sᴛᴏʀɪɴɢ ғᴏᴏᴅ ɪɴ ᴀɪʀ ᴛɪɢʜᴛ ᴄᴏɴᴛᴀɪɴᴇʀs
2. sᴛᴏʀɪɴɢ ғᴏᴏᴅ ɪɴ ʀᴇғʀɪɢᴇʀᴀᴛᴏʀs
3. ᴀᴅᴅɪɴɢ ᴀɴᴛɪᴏxɪᴅᴀɴᴛs
4. sᴛᴏʀɪɴɢ ғᴏᴏᴅ ɪɴ ᴀɴ ᴇɴᴠɪʀᴏɴᴍᴇɴᴛ ᴏғ ɴɪᴛʀᴏɢᴇɴ.