What is a saturated salt solution? What happens when you heat a saturated solution?

Explain decantation as a method of separation with an example.

Explain evaporation as the method of separation with an example.

Study the figures and explain how alum purifies water.

Read the following passage and answer the questions.
Food adulteration is the act of intentionally adding cheaper or inferior substances to food items to increase profits. For example, brick dust is added to chilly powder, coloured chalk powder to turmeric, papaya seeds to black pepper and sawdust to coriander powder. Adulterated food is harmful.

Suggest three ways to create awareness about harmful food adulterants.

Read the following passage and answer the questions.
Food adulteration is the act of intentionally adding cheaper or inferior substances to food items to increase profits. For example, brick dust is added to chilly powder, coloured chalk powder to turmeric, papaya seeds to black pepper and sawdust to coriander powder. Adulterated food is harmful.

Suggest measures that should be taken by the government to prevent food adulteration.