How to revoke Token Approvals?

If you see an error while Approving a transaction in MetaMask “Transaction Error. Exception thrown in contract code.”
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It is possible to revoke your token approvals using:
Ethereum - Etherscan 
Polygon - Polygonscan 
BSC - Bscscan​
Avalanche C-chain - Snowtrace​
HECO - Hecoinfo 
FTM - Ftmscan 
1.Go to the block explorer of the chain where you need to revoke your token approvals.
2.Press on Misc.
  3. Press on Token Approvals.
  4. Enter your wallet address in the field.
  5. You will see all of your token approvals.
  6. Find a required token which you can see in the Contract field and a required Bridge contract address in the Approved Spender field.
  7. Connect your wallet by pressing “Connect to Web3” button
  8. Press on revoke button.
  9. Approve revoke in your wallet.

Which CEXes you can use to send gas tokens?

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Wrapped tokens indexation explained

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