Introduction: The Realm of Rare and Precious Elements The periodic table, a testament to the fundamental building blocks of our universe, houses elements of varying abundance and utility. While some elements are readily available and integrated into our daily lives, others are exceedingly rare, requiring intricate extraction processes and possessing unique properties that command exorbitant…
In the reaction given below sulphuric acid acts as a /an:S + 2H2SO4 → 3SO2 + 2H2O (a) Non-volatile acid(b) Dibasic acid(c) Oxidising agent(d) Reducing agent Ans: (c) Oxidising Agent Here’s how to determine the role of sulfuric acid in the given reaction: 1. Analyze the Reaction: 2. Oxidation States: 3. Determine the Role: 4….
An organic compound has a vapour density of 22. The molecular formula of the organic compound is : (a) CH4(b) C2H4(c) C2H6(d) C3H8 Ans: (d) C3H8 To determine the molecular formula of the organic compound, we can use the vapour density and the atomic weights of carbon and hydrogen. Step 1: Calculate the molecular weight…
Which gas Decolourises potassium permanganate (KMnO4) solution? (a) Sulphur dioxide(b) Ammonia(c) Hydrogen chloride(d) Carbon dioxide Ans: Sulphur dioxide The Chemistry Behind the Decolorization Potassium permanganate (KMnO₄) is a strong oxidizing agent, meaning it readily accepts electrons. In its usual state, the permanganate ion (MnO₄⁻) imparts a deep purple color to the solution. Sulphur dioxide (SO₂)…
The metal whose oxide can be reduced by common reducing agents: (a) Copper(b) Sodium(c) Aluminium(d) Potassium Ans: (a) Copper Understanding Metal Oxide Reduction Metal oxides are compounds formed when metals react with oxygen. To extract the pure metal, the oxygen must be removed, a process known as reduction. This is achieved using a reducing agent,…
Which formula represents a saturated hydrocarbon? (a) C4H8(b) C5H12(c) C4H6(d) C5H10 Ans: (b) C5H12 Understanding Saturated Hydrocarbons Saturated hydrocarbons, also known as alkanes, are characterized by having only single bonds between their carbon atoms. This means that each carbon atom is bonded to the maximum possible number of hydrogen atoms. Let’s examine why the other…
