Chemistry (General Concepts) MCQs with Answers

Metallic bonding is best described as?

• A.Sharing of electrons between two non-metal atoms
• B.Transfer of electrons from one atom to another
• C.Sea of delocalized electrons
• D.Electrostatic attraction between oppositely charged ions

Which are mixtures in which the solute particles are dispersed?

• A.Solutions
• B.Emulsions
• C.Colloids
• D.Suspensions

Substances that react with both acids and bases are called?

• A.Neutral substances
• B.Acidic substances
• C.Basic substances
• D.Amphoteric substances

Which of the following is not a nucleophile?

• A.OH⁻
• B.NH₃
• C.AlCl₃
• D.CN⁻

In a resonance structure of a molecule ?

• A.There is a change in the molecular formula
• B.There is a change in the position of atoms
• C.There is a change in the number of atoms
• D.There is a change in the distribution of electrons

When one atom forms cation by losing electron and other forms anion by accepting that electron then bond form between them is ?

• A.Covalent bond
• B.Ionic bond
• C.Hydrogen bond
• D.Metallic bond

Correct order of bond energy will be:

• A.HCl > HBr > HI
• B.HI > HBr > HCl
• C.HBr > HCl > HI
• D.HCl > HI > HBr

Which of the following does not give iodoform test?

• A.Acetone
• B.Ethanol
• C.Benzophenone
• D.Acetaldehyde

Bond energy refers to?

• A.Energy released when 1 mole of bonds is formed
• B.Energy required to form 1 mole of bonds
• C.Energy required to break 1 mole of bonds
• D.Energy released when 1 mole of bonds is broken

Avogadro’s number may represent?

• A.Number of molecules
• B.Number of particles
• C.Number of atoms only
• D.Number of electrons only