The automobile emission can be reduced by adding the following in the petrol:
Correct answer: A. Barium salts
- A. Barium salts
- B. Cobalt salts
- C. Silicon oil
- D. Calcium salts
Explanation
Barium salts have been used as fuel additives to help reduce smoke and particulate emissions from engines. The other listed salts and silicone oil are not the standard additive identified for this purpose.
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