Chemical Reactions and Equations
Top questions
See all →- Explain the following terms with one example each. (a) Corrosion (b) Rancidity Corrosion is defined as a process where materials, usually metals, deteriorate as a result of a chemical reaction with air, moisture, chemic... 1
- Oil and fat containing food items are flushed with nitrogen. Why? Oil and fat containing food items flushed with nitrogen because nitrogen acts as an antioxidant and it prevents them from being oxidised 2
- Why do we apply paint on iron articles? Iron articles are painted because it prevents them from rusting. When painted, the contact of iron articles from moisture and air is cut off... 1
- A shiny brown-coloured element ‘X’ on heating in air becomes black in colour. Element 'X' is copper and the black coloured compound is copper (11) oxide Equation: 2Cu_((s)) + O_(2(g) )→ 2CuO_((s)) 1
- Explain the following in terms of gain or loss of oxygen with two examples each. Oxidation: Addition of oxygen or electronegative element to a atom, molecule, or ion or removal of hydrogen or electropositive element from... 1
- What do you mean by a precipitation reaction? Explain by giving examples. A reaction in which an insoluble solid (called precipitate) is formed is called a precipitation reaction.For Example: Na₂CO₃ (aq) + CaCl₂ (a... 1