- The reaction in which heat is released is called
👉 Exothermic reaction - Rusting of iron is an example of
👉 Oxidation - pH value of acidic solution is
👉 Less than 7 - Which salt is used for softening hard water?
👉 Washing soda - The metal stored in kerosene oil is
👉 Sodium - Ionic compounds conduct electricity in
👉 Molten state - Ethanol reacts with sodium to form
👉 Hydrogen gas - Soap does not work well in hard water because
👉 Scum is formed - Which gas is released when acid reacts with metal?
👉 Hydrogen - Which bond is present in carbon compounds?
👉 Covalent bond
These MCQs (or variations) appear almost every year.
