defence exam Indian Navy Fireman/Fire Engine Driver Mock Test 2024 General Science Chemistry Equilibrium
Acidic drain cleaners made of ________ or ________ acid are powerful enough to clear heavy-duty hair, food, grease, soap scum, or paper-based clogs in 15 minutes or less.
1
sulphuric, hydrochloric
2
formic, citric
3
nitric, carbonic
4
malic, lactic