Fill in the blanks: 1) A cannon after firing recoils due to _____ 2) Magnesium ribbon on burning produces an ash. The colour of the ash is _____ 3) What happens when a solution of sodium sulphate is added to barium chloride______ 4) Akash observed an onion peel under the microscope. The peel was stained and it appeared pink in colour. The stain used is____

1) A cannon after firing recoils due to Force exerted by cannon ball on the cannon.

2) Magnesium ribbon on burning produces an ash. The color of the ash is bright white.

3) Na₂ SO₄ (aqua) + Ba Cl₂ (aqua) → 2 Na Cl (solid) + Ba SO₄ (solid). Insoluble Barium Sulfate precipitate is formed

4) Akash observed an onion peel under the microscope. The peel was stained, and it appeared pink. The stain used is iodine.