Brownie science quiz

Answer six practical baking questions. The result explains every answer and links to the relevant science or troubleshooting resource, so the quiz works as a learning tool rather than a score counter.

1. What usually moves a brownie toward a cakier crumb? More flour and stronger aeration More melted chocolate and less flour More oil with no other change

2. Why can a larger pan change the bake even when the recipe is unchanged? It always raises oven temperature It creates a thinner batter layer It dissolves more sugar

3. Which statement about a shiny crackly top is most accurate? It depends only on baking powder Sugar dissolution and egg proteins can help form the surface film It proves the centre is fully baked

4. Why is cocoa powder not a direct one-to-one substitute for melted chocolate? Cocoa contains no chocolate flavour Melted chocolate also contributes cocoa butter and usually sugar Cocoa cannot be baked

5. For a fudgy brownie, what does a completely clean toothpick often mean? It may be baked beyond the moistest useful endpoint It is definitely raw The sugar was measured incorrectly

6. Why can oil increase chew compared with butter? Oil stays liquid at room temperature Oil contains gluten Oil always creates more air