Question

Name two metals which will displace hydrogen from dilute acids and two metals which will not.

Answer 1

In reactive series of metals the metals above hydrogen will displace hydrogen for example Sodium , Potassium etc . and the metals below hydrogen will not displace it for example Gold , Platinum etc
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Answer 2

ɴᴀᴍᴇ ᴛᴡᴏ ᴍᴇᴛᴀʟs ᴡʜɪᴄʜ ᴡɪʟʟ ᴅɪsᴘʟᴀᴄᴇ ʜʏᴅʀᴏɢᴇɴ ғʀᴏᴍ ᴅɪʟᴜᴛᴇ ᴀᴄɪᴅs, ᴀɴᴅ ᴛᴡᴏ ᴍᴇᴛᴀʟs ᴡʜɪᴄʜ ᴡɪʟʟ ɴᴏᴛ. ᴀɴsᴡᴇʀ: ɪʀᴏɴ ᴀɴᴅ ᴀʟᴜᴍɪɴɪᴜᴍ ᴡɪʟʟ ᴅɪsᴘʟᴀᴄᴇ ʜʏᴅʀᴏɢᴇɴ ғʀᴏᴍ ᴅɪʟᴜᴛᴇ ᴀᴄɪᴅs ᴀs ᴛʜᴇʏ ᴍᴏʀᴇ ʀᴇᴀᴄᴛɪᴠᴇ ᴛʜᴇɴ ʜʏᴅʀᴏɢᴇɴ. ᴍᴇʀᴄᴜʀʏ ᴀɴᴅ ᴄᴏᴘᴘᴇʀ ᴄᴀɴɴᴏᴛ ᴅɪsᴘʟᴀᴄᴇ ʜʏᴅʀᴏɢᴇɴ ғʀᴏᴍ ᴅɪʟᴜᴛᴇ ᴀᴄɪᴅs ᴀs ᴛʜᴇʏ ᴀʀᴇ ʟᴇss ʀᴇᴀᴄᴛɪᴠᴇ ᴛʜᴀɴ ʜʏᴅʀᴏɢᴇɴ.