What makes a rainbow have so many colours?

Which chemical is used in turmeric that turns red with soap?

Which liquid is used to check if something is acidic or basic?

What colour does blue litmus paper turn in acid?

Which natural juice can act like an indicator?

What colour is copper sulfate?

What gas turns lime water milky?

Which of these is used in fireworks to give red colour?

Why are leaves green?

What happens when vinegar and baking soda are mixed?