Correct answer
B. Photochemical reaction
Explanation
The correct answer is Photochemical reaction.
Damage to metal surface by mechanical action is called________?
Dense soda ash used in the manufacture of glass, is chemically represented by________?
Reforming________?
For Indian standard (IS) screens, the mesh number is equal to its aperture size expressed to the nearest deca-micron (0.01 mm). Aperture width of IS screen of mesh number 50 will be approximately ________ microns?
________ forces do not act in case of fluid flow?
Specific gravity of a metal, which weighs 5 kg in air and 4 kg when submerged in water, will be________?