Social & Preventive Medicine Proposed guideline values for Radioactivity in Drinking water is A Gross a activity 1.0 Bq/L and Gross b activity 10.0 Bq/L B Gross a activity 1.0 Bq/L and Gross b activity 0.1 Bq/L C Gross a activity 0.1 Bq/L and Gross b activity 1.0 Bq/L D Gross a activity 10 Bq/L and Gross b activity 1.0 Bq/L 💡 Explanation Proposed guideline values for Radioactivity in Drinking water is ✓ Correct Answer: C. Gross a activity 0.1 Bq/L and Gross b activity 1.0 Bq/L