Question

which metal do not corrode easily ?
what are alloys​

Answer 1

Metals such as gold (Au) and platinum (Pt) present at the bottom of the activity series do not corrode easily.metal made by mixing two types of metal together is known as an alloy

मिश्र धातु

Answer 2

1).ɪɴ ᴛʜᴇ ᴀᴄᴛɪᴠɪᴛʏ sᴇʀɪᴇs, ᴍᴇᴛᴀʟs ᴀʀᴇ ᴏɴ ᴛʜᴇ ᴛᴏᴘ ᴏғ ᴛʜᴇ sᴇʀɪᴇs ʀᴇᴀᴄᴛ ᴀɴᴅ ᴄᴏʀʀᴏᴅᴇ ᴇᴀsɪʟʏ ᴀs ᴛʜᴇsᴇ ᴍᴇᴛᴀʟs ᴀʀᴇ ʜɪɢʜʟʏ ʀᴇᴀᴄᴛɪᴠᴇ ʟɪᴋᴇ ɪʀᴏɴ ᴄᴏʀʀᴏᴅᴇs ᴇᴀsɪʟʏ ɪɴ ᴛʜᴇ ᴘʀᴇsᴇɴᴄᴇ ᴏғ ᴡᴀᴛᴇʀ ᴀɴᴅ ᴀɪʀ ғᴏʀᴍɪɴɢ ɪᴛs ᴏxɪᴅᴇ ʟᴀʏᴇʀ ᴡʜɪʟᴇ ᴍᴇᴛᴀʟs ᴘʀᴇsᴇɴᴛ ᴀᴛ ᴛʜᴇ ʙᴏᴛᴛᴏᴍ ᴀʀᴇ ʟᴇᴀsᴛ ʀᴇᴀᴄᴛɪᴠᴇ ᴀɴᴅ ᴅᴏ ɴᴏᴛ ᴄᴏʀʀᴏᴅᴇ ᴇᴀsɪʟʏ ʟɪᴋᴇ ɢᴏʟᴅ, sɪʟᴠᴇʀ ᴀɴᴅ ᴘʟᴀᴛɪɴᴜᴍ ᴀʀᴇ sᴏᴍᴇ ᴏғ ᴛʜᴇᴍ.

2) ᴀʟʟᴏʏs ɪs ᴀ ᴍᴇᴛᴀʟ ᴍᴀᴅᴇ ʙʏ ᴍɪxɪɴɢ ᴛᴡᴏ ᴛʏᴘᴇs ᴏғ ᴍᴇᴛᴀʟ ᴛᴏɢᴇᴛʜᴇʀ