[amp_mcq option1=”Free from voids” option2=”Glossy” option3=”Durable” option4=”Uniform” correct=”option2″]
The correct answer is: B. Glossy.
Oxalic acid is a strong acid that can be used to clean and polish surfaces. When rubbed on a floor, it can remove dirt, grime, and stains, and leave the surface looking shiny and glossy.
The other options are incorrect because:
- A. Free from voids: Oxalic acid is not a substance that can fill in voids in a surface.
- C. Durable: Oxalic acid can make a surface more durable, but it is not the only factor that affects durability.
- D. Uniform: Oxalic acid can make a surface more uniform, but it is not the only factor that affects uniformity.
In conclusion, the floor is rubbed with oxalic acid to make its surface glossy.