When non-metals dissolve in water, they produce acidic oxides. This means that the resulting solution will have acidic properties.

To understand this, we need to look at the nature of non-metals. Non-metals are generally not able to lose electrons easily, so they tend to gain electrons in chemical reactions. When non-metals react with oxygen, they form oxides.

Non-metals can form different types of oxides depending on the conditions. When non-metals react with oxygen in the presence of water, they tend to form acidic oxides. These acidic oxides then dissolve in water to form acids.

For example, when sulfur (a non-metal) reacts with oxygen, it forms sulfur dioxide (SO2), which is an acidic oxide. When sulfur dioxide dissolves in water, it forms sulfurous acid (H2SO3), which is an acid.

Therefore, the correct statement is that non-metals produce acidic oxides when dissolved in water.