India, Nov. 7 -- State-run oil marketing companies on Friday rejected Karnataka's claim that petrol sold at some retail outlets in the state contained up to 31 per cent ethanol, saying the findings were not based on testing carried out under prescribed procedures.

The Karnataka government had alleged that major oil marketing companies were supplying petrol with ethanol content above the prescribed 20 per cent limit, with tests recording levels as high as 31.2 per cent, and sought action against the companies. Food, Civil Supplies, Consumer Affairs and Legal Metrology Minister Rizwan Arshad said the allegations were based on tests on samples collected from Bengaluru, Kolar, Chikkaballapura, Bengaluru Rural, Ramanagara, Mangaluru and Tumak...