Multiple choice

Directions: Fill the blanks. Biogas fuel contains (i) _______ gas and is used for (ii) _______.

  1. 75% oxygen, combustion

  2. 75% chlorine, lighting

  3. 75% sulphur, combustion

  4. 75% methane, lighting
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Biogas fuel contains 75% methane gas and is used for lighting.

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