Which gas turns lime water milky?

What is the colour of copper sulfate crystals?

When copper sulfate is heated, it changes from blue to:

What gives the green colour to leaves?

Which metal gives a bright red colour to fireworks?

Which of the following indicators is pink in acid and colorless in base?

The blue colour of the sky is due to:

Which element gives a green colour to fireworks?

What is the colour of iron rust?

Which indicator turns red in acid and blue in base?