___________________ defect occurs when surface to be painted


___________________ defect occurs when  surface to be painted is too smooth.

A. Sagging

B. Running

C. Grinning

D. Wrinkling

The question was asked in class test.

Enquiry is from Defects in Painting in division Painting, Varnishing, Distempering, etc of Construction & Building Materials

Right answer is B. Running

Easy explanation: The paint runs back and leaves small area of surface un covered. Hence running defect occurs when the surface to be painted is too smooth. Whereas, Saponification occurs due to the chemical action of alkaline.