The main component of single superphosphate is: MCQ with Answer and Explanation

Explanation:
H₂SO₄ is used in production of fertilizers, detergents, dyes, explosives, petroleum refining, and many other chemicals. Its wide industrial use earns it the title. It's not the strongest (e.g., HClO₄ is stronger).

Explanation:
Cooking of food involves chemical reactions (e.g., denaturation of proteins, caramelization of sugars) that form new substances, making it a chemical change. Dissolving sugar in water is a physical change because no new substance is formed (sugar can be recovered by evaporation). Breaking glass is a physical change (change in size/shape). Melting wax is a physical change (change of state).

Explanation:
According to Faraday's First Law of Electrolysis, the mass (m) of a substance deposited at an electrode is directly proportional to the total quantity of electricity (Q) passed through the electrolyte. Since Q = Current (I) × Time (t), the mass is directly proportional to both the current and the time.