Chemistry (General Concepts) MCQs with Answers

One-liner

An aqueous solution is formed by dissolving a solute in water, which acts as the solvent.

One-liner

The particles in a solid are held together tightly packed because of strong intermolecular forces.

One-liner

The N₂ molecule is isoelectronic with CN⁻ (cyanide ion), as both have 14 electrons.

One-liner

He+ is not a molecular ion; it is a monatomic ion formed by the loss of one electron from a single helium atom.

One-liner

Dry ice sublimation is not a chemical change because it is a physical change where solid CO₂ directly turns into gas without forming a new substance.

One-liner

The equilibrium constant expression in non-aqueous medium can be applied to an aqueous solution of table salt because the equilibrium constant concept is universal and applies regardless of the solvent medium.

One-liner

K₃[CoF₆] possesses sp³d² hybridization because Co³⁺ uses two d-orbitals, one s-orbital, and three p-orbitals to form six hybrid orbitals in an octahedral geometry.

One-liner

A solution containing a major (large) quantity of solute is called a concentrated solution.

One-liner

Potassium permanganate, potassium dichromate, and hydrogen peroxide are all strong oxidizing agents, so the correct answer is All of these.

One-liner

VSEPR theory is used to predict the molecular shape of molecules based on electron-pair repulsion around the central atom.