Qūê§ţįøñ:-
ʏᴏᴜ ᴀʀᴇ ɢɪᴠᴇɴ ᴛʜʀᴇᴇ ᴛᴇsᴛ ᴛᴜʙᴇs. ᴛʜᴇ ᴛʜʀᴇᴇ ᴛᴇsᴛ ᴛᴜʙᴇs ᴄᴏɴᴛᴀɪɴ ᴅɪsᴛɪʟʟᴇᴅ ᴡᴀᴛᴇʀ, ᴀᴄɪᴅɪᴄ sᴏʟᴜᴛɪᴏɴ ᴀɴᴅ ᴛʜᴇ ʙᴀsɪᴄ sᴏʟᴜᴛɪᴏɴ ʀᴇsᴘᴇᴄᴛɪᴠᴇʟʏ. ᴛʜᴇʀᴇ ɪs ᴏɴʟʏ ʀᴇᴅ ʟɪᴛᴍᴜs ᴘᴀᴘᴇʀ ᴀᴠᴀɪʟᴀʙʟᴇ ɪɴ ᴏʀᴅᴇʀ ᴛᴏ ɪᴅᴇɴᴛɪғʏ ᴡʜᴀᴛ ɪs ᴛʜᴇʀᴇ ɪɴ ᴇᴀᴄʜ ᴛᴇsᴛ ᴛᴜʙᴇ. ʜᴏᴡ ᴡɪʟʟ ʏᴏᴜ ғɪɴᴅ ᴏᴜᴛ ᴡʜᴀᴛ ɪs ɪɴ ᴇᴀᴄʜ ᴏғ ᴛʜᴇ ᴛᴇsᴛ ᴛᴜʙᴇs?
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dip the all substance in red litmus ppr
the thing which changes the red litmus into blue is base
now use that blue litmus to check acid solution
the substance which does n 't show any change in both red nd blue litmus it means it is water
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