What causes water to boil?

Why does bread rise when baked?

Which process is used to separate stones from rice?

What happens when milk is converted into curd?

What is the main reason oil floats on water?

Which method is used to separate tea leaves from tea?

Which change is observed when ice melts?

What type of change occurs when sugar dissolves in water?

What happens when popcorn kernels are heated?

Which gas is released when baking soda reacts with lemon juice?