Question

What is electroplating? On which effect of current is it based? Give 2 examples of two metals which are electroplated on iron objects.​

Answer 1

• ᴛʜᴇ ᴍᴀᴛᴇʀɪᴀʟs ᴡʜɪᴄʜ ᴀʟʟᴏᴡ ᴇʟᴇᴄᴛʀɪᴄ ᴄᴜʀʀᴇɴᴛ ᴛᴏ ᴘᴀss ᴛʜʀᴏᴜɢʜ ᴀʀᴇ ᴄᴀʟʟᴇᴅ ɢᴏᴏᴅ ᴄᴏɴᴅᴜᴄᴛᴏʀs ᴏғ ᴇʟᴇᴄᴛʀɪᴄɪᴛʏ. ғᴏʀ ᴇxᴀᴍᴘʟᴇ, ᴍᴇᴛᴀʟs ʟɪᴋᴇ ᴄᴏᴘᴘᴇʀ ᴀɴᴅ ᴀʟᴜ ɪɴɪᴜᴍ.

• ᴛʜᴇ ᴍᴀᴛᴇʀɪᴀʟs ᴡʜɪᴄʜ ᴅᴏ ɴᴏᴛ ᴀʟʟᴏᴡ ᴇʟᴇᴄᴛʀɪᴄ ᴄᴜʀʀᴇɴᴛ ᴛᴏ ᴘᴀss ᴛʜʀᴏᴜɢʜ ᴛʜᴇᴍ ᴇᴀsɪʟʏ ᴀʀᴇ ᴄᴀʟʟᴇᴅ ᴘᴏᴏʀ ᴄᴏɴᴅᴜᴄᴛᴏʀ ᴏғ ᴇʟᴇᴄᴛʀɪᴄɪᴛʏ. ғᴏʀ ᴇxᴀᴍᴘʟᴇ, ʀᴜʙʙᴇʀ, ᴘʟᴀsᴛɪᴄ ᴀɴᴅ ᴡᴏᴏᴅ.

• ᴅᴜᴇ ᴛᴏ ᴛʜᴇ ʜ ᴇᴀᴛɪɴɢ ᴇғғᴇᴄᴛ ᴏғ ᴄᴜʀʀᴇɴᴛ, ᴛʜᴇ ғɪʟᴀᴍᴇɴᴛ ᴏғ ᴛʜᴇ ʙᴜʟʙ ᴏғ ᴛʜᴇ ᴛᴇsᴛᴇʀ ɢᴇᴛs ʜᴇᴀᴛᴇᴅ ᴛᴏ ᴀ ʜɪɢʜ ᴛᴇᴍᴘᴇʀᴀᴛᴜʀᴇ ᴀɴᴅ ɪᴛ sᴛᴀʀᴛs ɢʟᴏᴡɪɴɢ.

• ɪғ ᴛʜᴇ ᴄᴜʀʀᴇɴᴛ ᴛʜʀᴏᴜɢʜ ᴀ ᴄɪʀᴄᴜɪᴛ ɪs ᴛᴏᴏ ᴡᴇᴀᴋ, ᴛʜᴇ ғɪʟᴀᴍᴇɴᴛ ᴅᴏᴇs ɴᴏᴛ ɢᴇᴛ ʜᴇᴀᴛᴇᴅ sᴜғғɪᴄɪᴇɴᴛʟʏ ᴀɴᴅ ɪᴛ ᴅᴏᴇs ɴᴏᴛ ɢʟᴏᴡ.

• ʟᴇᴅ (ʟɪɢʜᴛ ᴇᴍɪᴛᴛɪɴɢ ᴅɪᴏᴅᴇs) ᴄᴀɴ ʙᴇ ᴜsᴇᴅ ɪɴ ᴘʟᴀᴄᴇ ᴏғ ᴛʜᴇ ᴇʟᴇᴄᴛʀɪᴄ ʙᴜʟʙ ɪɴ ᴛʜᴇ ᴛᴇsᴛᴇʀ, ʟᴇᴅ ɢʟᴏᴡs ᴇᴠᴇɴ ᴡʜᴇɴ ᴀ ᴡᴇᴀᴋ ᴇʟᴇᴄᴛʀɪᴄ ᴄᴜʀʀᴇɴᴛ ғʟᴏᴡs ᴛʜʀᴏᴜɢʜ ɪᴛ.

• s ᴇʟᴇᴄᴛʀɪᴄ ᴄᴜʀʀᴇɴᴛ ᴘʀᴏᴅᴜᴄᴇs ᴍᴀɢɴᴇᴛɪᴄ ᴄᴜʀʀᴇɴᴛ, ᴀ ᴛᴇsᴛᴇʀ ᴄᴀɴ ʙᴇ ᴘʀᴇᴘᴀʀᴇᴅ ʙʏ ᴜsɪɴɢ ᴀ ᴄᴏᴍᴘᴀss ɴᴇᴇᴅʟᴇ. ᴛʜᴇ ᴅᴇғʟᴇᴄᴛɪᴏɴ ᴏғ ᴛʜᴇ ᴍᴀɢɴᴇᴛɪᴄ ɴᴇᴇᴅʟᴇ ᴄᴀɴ ʙᴇ sᴇᴇɴ, ᴇᴠᴇɴ ᴡʜᴇɴ ᴄᴜʀʀᴇɴᴛ ɪs sᴍᴀʟʟ.

• ᴅɪsᴛɪʟʟᴇᴅ ᴡᴀᴛᴇʀ ɪs ᴘᴏᴏʀ ᴄᴏɴᴅᴜᴄᴛᴏʀ ᴏғ ᴇʟᴇᴄᴛʀɪᴄɪᴛʏ. ᴡᴀᴛᴇʀ ᴄᴏʟʟᴇᴄᴛᴇᴅ ғʀᴏᴍ ᴛᴀᴘs, ʜᴀɴᴅ ᴘᴜᴍᴘs, ᴡᴇʟʟs ᴀɴᴅ ᴘᴏɴᴅs ɪs ɴᴏᴛ ᴘᴜʀᴇ ᴍ ᴅ ᴄᴏɴᴛᴀɪɴ ᴅɪssᴏʟᴠᴇᴅ sᴀʟᴛs sᴏ ɪᴛ ɪs ɢᴏᴏᴅ ᴄᴏɴᴅᴜᴄᴛᴏʀ ᴏғ ᴇʟᴇᴄᴛʀɪᴄɪᴛʏ.

• ᴍᴏsᴛ ʟɪǫᴜɪᴅs ᴛʜᴀᴛ ᴄᴏɴᴅᴜᴄᴛ ᴇʟᴇᴄᴛʀɪᴄɪᴛʏ ᴀʀᴇ sᴏʟᴜᴛɪᴏɴs ᴏғ ᴀᴄɪᴅs, ʙᴀsᴇs ᴀɴᴅ sᴀʟᴛs.

• ᴄʜᴇᴍɪᴄᴀʟ ᴇғғᴇᴄᴛ ᴏғ ᴛʜᴇ ᴇʟᴇᴄᴛʀɪᴄ ᴄᴜʀʀᴇɴᴛ: ᴛʜᴇ ᴘᴀssᴀɢᴇ ᴏғ ᴀɴ ᴇʟᴇᴄᴛʀɪᴄ ᴄᴜʀʀᴇɴᴛ ᴛʜʀᴏᴜɢʜ ᴀ ᴄᴏɴᴅᴜᴄᴛɪɴɢ sᴏʟᴜᴛɪᴏɴ ᴄᴀᴜsᴇs ᴄʜᴇᴍɪᴄᴀʟ ʀᴇᴀᴄᴛɪᴏɴ. ᴛʜᴀᴛ ᴍᴀʏ ᴄᴀᴜsᴇ ғᴏʀᴍᴀᴛɪᴏɴ ᴏғ ʙᴜʙʙʟᴇs ᴏғ ᴀ ɢᴀs ᴏɴ ᴛʜᴇ ᴇʟᴇᴄᴛʀᴏᴅᴇs, ᴅᴇᴘᴏsɪᴛᴇs ᴏғ ᴍᴇᴛᴀʟ ᴏɴ ᴇʟᴇᴄᴛʀᴏᴅᴇs, ᴄʜᴀɴɢᴇs ᴏғ ᴄᴏʟᴏᴜʀ ᴏғ sᴏʟᴜᴛɪᴏɴs ᴇᴛᴄ.

• ᴇʟᴇᴄᴛʀᴏᴘʟᴀᴛɪɴɢ: ᴛʜᴇ ᴘʀᴏᴄᴇss ᴏғ ᴅᴇᴘᴏsɪᴛɪɴɢ ᴀ ʟᴀʏᴇʀ ᴏғ ᴀɴʏ ᴅᴇsɪʀᴇᴅ ᴍᴇᴛᴀʟ ᴏɴ ᴀɴᴏᴛʜᴇʀ ᴍᴀᴛᴇʀɪᴀʟ ʙʏ ᴍᴇᴀɴs ᴏғ ᴇʟᴇᴄᴛʀɪᴄɪᴛʏ ɪs ᴄᴀʟʟᴇᴅ ᴇʟᴇᴄᴛʀᴏᴘʟᴀᴛɪɴɢ. ɪᴛ ɪs ᴏɴᴇ ᴏғ ᴛʜᴇ ᴍᴏsᴛ ᴄᴏᴍᴍᴏɴ ᴀᴘᴘʟɪᴄᴀᴛɪᴏɴ ᴏғ ᴄʜᴇᴍɪᴄᴀʟ ᴇғғᴇᴄᴛs ᴏғ ᴇʟᴇᴄᴛʀɪᴄ ᴄᴜʀʀᴇɴᴛ.

• ᴜsᴇs ᴏғ ᴇʟᴇᴄᴛʀᴏᴘʟᴀᴛɪɴɢ: ᴇʟᴇᴄᴛʀᴏᴘʟᴀᴛɪɴɢ ɪs ᴡɪᴅᴇʟʏ ᴜsᴇᴅ ɪɴ ɪɴᴅᴜsᴛ ғᴏʀ ᴄᴏᴀᴛɪɴɢ ᴍᴇᴛᴀʟ ᴏʙᴊᴇᴄᴛs ᴡɪᴛʜ ᴀ ᴛʜɪɴ ʟᴀʏᴇʀ ᴏғ ᴀ ᴅᴇғᴇʀᴇɴᴛ ᴍᴇᴛᴀʟ. ᴛʜɪs ᴍᴀʏ ʙᴇ ᴅᴏɴᴇ ᴛᴏ

— ᴍᴀᴋᴇ ᴏʙᴊᴇᴄᴛs ᴀᴘᴘᴇᴀʀ sʜɪɴʏ,

— ᴘʀᴇᴠᴇɴᴛ ᴄᴏʀʀᴏsɪᴏɴ,

— ᴍᴀᴋᴇ ᴏʙᴊᴇᴄᴛs ʀᴇsɪsᴛᴀɴᴛ ᴛᴏ sᴄʀᴀᴛᴄʜᴇs.

— ᴄᴏᴀᴛ ʟᴇss ʀᴇᴀᴄᴛɪᴠᴇ ᴍᴇᴛᴀʟ ᴏɴ ᴍᴏʀᴇ ʀᴇᴀᴄᴛɪᴠᴇ ᴍᴇᴛᴀʟs ᴛᴏ ᴘʀᴏᴛᴇᴄᴛ ғʀᴏᴍ ɢᴇᴛᴛɪɴɢ sᴘᴏɪʟᴛ,

— ᴇʟᴇᴄᴛʀᴏᴘʟᴀᴛᴇ ʟᴇss ᴇxᴘᴇɴsɪᴠᴇ ᴍᴇᴛᴀʟs ᴡɪᴛʜ sɪʟᴠᴇʀ ᴀɴᴅ ɢᴏʟᴅ ᴛᴏ ᴍᴀᴋᴇ ᴏʀɴᴀᴍᴇɴᴛs.

ғᴏʀ ᴇxᴀᴍᴘʟᴇ:

— ᴄʜʀᴏᴍɪᴜᴍ ʜᴀs ᴀ sʜɪɴʏ ᴀᴘᴘᴇᴀʀᴀɴᴄᴇ, ᴅᴏᴇs ɴᴏᴛ ᴄᴏʀʀᴏᴅᴇ ᴀɴᴅ ɪs ʀᴇsɪsᴛᴀɴᴛ ᴛᴏ sᴄʀᴀᴛᴄʜᴇs. ʙᴜᴛ, ᴄʜʀᴏᴍɪᴜᴍ ɪs ᴇxᴘᴇɴsɪᴠᴇ ᴀɴᴅ ɪᴛ ɪs ɴᴏᴛ ᴇᴄᴏɴᴏᴍɪᴄᴀʟ ᴛᴏ ᴍᴀᴋᴇ ᴛʜᴇ ᴡʜᴏʟᴇ ᴏʙᴊᴇᴄᴛ ᴏᴜᴛ ᴏғ ᴄʜʀᴏᴍɪᴜᴍ. sᴏ, ᴛʜᴇ ᴏʙᴊᴇᴄᴛs, sᴜᴄʜ ᴀs ᴛᴀᴘs, ᴄᴀʀ ᴘᴀʀᴛs, ᴡʜᴇᴇʟ ʀɪᴍs ᴇᴛᴄ. ᴍᴀᴅᴇ ғʀᴏᴍ ᴀ ᴄʜᴇᴀᴘᴇʀ ᴍᴇᴛᴀʟ ᴀɴᴅ ᴇʟᴇᴄᴛʀᴏᴘʟᴀᴛᴇᴅ ᴡɪᴛʜ ᴄʜʀᴏᴍɪᴜᴍ.

— ᴊᴇᴡᴇʟʟᴇʀʏ ᴍᴀᴅᴇ ᴏғ ᴄʜᴇᴀᴘ ᴍᴇᴛᴀʟ ɪs ᴇʟᴇᴄʀᴏᴘʟᴀᴛᴇ ɪ ᴡɪᴛʜ sɪʟᴠᴇʀ ᴏʀ ɢᴏʟᴅ ᴛᴏ ᴀᴘᴘᴇᴀʀ ᴀs ɪғ ᴍᴀᴅᴇ ᴏғ sɪʟᴠᴇʀ ᴏʀ ɢᴏʟᴅ.

— ᴛɪɴ ɪs ʟᴇss ʀᴇᴀᴄᴛɪᴠᴇ ᴛʜᴀɴ ɪʀᴏɴ. sᴏ, ɪʀᴏɴ ᴄᴀɴs ᴜsᴇᴅ ғᴏʀ ғᴏᴏᴅ ɪᴛᴇᴍs ᴀʀᴇ ᴇʟᴇᴄᴛʀᴏᴘʟᴀᴛᴇᴅ ᴡɪᴛʜ ᴛɪɴ ᴛᴏ ᴘʀᴇᴠᴇɴᴛ sᴘᴏɪʟᴀɢᴇ ғʀᴏᴍ ᴄᴏɴᴛᴀᴄᴛ ᴡɪᴛʜ ɪʀᴏɴ.

l hope it will be help u ☺️✌☺️