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Airdrops come under Myetherwallet on any ERC20 and you can eaisly transfer your fund from MYetherwallet to any exchange without wasting much time.

you got your airdrop in form of token and when token got listed on any exchange you can sell them at that exchange .

When the crypto that offered the airdrops is

officially on the exchange market then it means

you can begin to trade that coin,so since you have earned the coin already you can simply visit

the exchangers that trades the coin then just sell
the coin and get your money or exchange the

coin to a more popular coin like bitcoin then cash out the bitcoin,the decision is yours to make