defence exam ITBP (Telecommunication) Head Constable Mock Test 2024 Chemistry Some Basic Concepts of Chemistry Mole Concept
A solution of Gallic acid in ethanol was made by dissolving 0.05 mg in 250 mL of ethanol(w/v). This solution in ppm would be ______________.
1
0.05 ppm
2
1 ppm
3
0.2 ppm
4
0.5 ppm