Which fuel am I?

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Across
  1. 3. Clean fuel used to power modern cars
  2. 6. A liquid fuel sometimes used in lanterns and stoves Clean energy used to power modern vehicles
  3. 7. Black solid fuel found in the ground
Down
  1. 1. Fuel used commonly in cars and scooters
  2. 2. Fuel used in trucks and buses
  3. 4. Gas Fuel used for cooking in homes
  4. 5. Traditional fuel used in villages which gives out smoke