Which is not the purpose of using a paper towel to dab off your metal?

Remove the outer layer of sodium oxide that formed to allow for a quicker reaction

Remove the kerosene or oil used as a storage medium to allow for a quicker reaction

Remove the kerosene or oil used as a storage medium so that side reactions do not occur, generating a sooty flame

Remove the outer layer of sodium oxide that formed to allow for a quicker reaction

Explanation:

The purpose of not using a paper towel to dab off your metal is:

Remove the outer layer of sodium oxide that formed to allow for a quicker reaction.

The process of Dabbing is nothing but applying doses of a cannabis concentrate that gets vaporized on a surface which is heated up.

The daboff the metal by normal paper towel cannot remove the outer oxide layer.