Ethers should not be heated to dryness. Why ?

"Evolution should not be equated with progress". Why?

Why should acids be handled with care?

Why sodium metal cannot be used to dry alcohols but it can be used to dry ethers ?

While diluting an acid, why is it recommended that the acid should be added to water and not water to the acid ?

The coolant in a chemical or a nuclear plant should have high specifice heat. Why ?

On heating 1.763 g of hydrated BaCl_(2) to dryness, 1.505 g of anhyrous salt remained, What is the formula of hydrate?

Why should oils and fats be not released in the drain? Explain.