Glass is soluble in A. H2SO4 B. HClO4 C. HNO3 D. HF

The correct answer is D. HF.

Glass is a non-crystalline solid made from silica, soda ash, and lime. It is typically hard and brittle, and does not dissolve in water. However, it is soluble in hydrofluoric acid (HF). This is because HF can break down the silica in glass, forming silicon tetrafluoride and water.

The other options are incorrect because they are not strong enough to break down the silica in glass. H2SO4, HClO4, and HNO3 are all strong acids, but they are not as strong as HF. They can dissolve some types of glass, but they will not dissolve ordinary glass.

In addition, HF is a very dangerous substance. It is a