Correct Answer: Methyl alcohol

Solution : The correct option is Methyl alcohol

When formaldehyde (CH2O) and potassium hydroxide (KOH) are heated together, they can undergo a reaction known as the Cannizzaro reaction. In the Cannizzaro reaction, formaldehyde is both oxidized to formic acid (HCOOH) and reduced to produce methanol (CH3OH). Here's the balanced chemical equation for this reaction:

2 CH2O + KOH → HCOOH + CH3OH

So, when formaldehyde and potassium hydroxide are heated, you get both formic acid and methanol as products.