Some Chemical Reactions MCQs with Answers

When combustion is completed, we get?

• A.CO₂
• B.CO
• C.O₂
• D.H₂O

Which of the following is NOT a characteristic of the burning process?

• A.It results in the formation of new substances
• B.It produces heat and light
• C.It involves a chemical reaction with oxygen
• D.It is a physical process

An equilibrium constant of 1 for a reaction means that the reaction is _?

• A.One that does not proceed at all, leaving only reactants
• B.One that goes to completion, yielding almost all products
• C.One that will yield 50% products and 50% reactants left over
• D.One that yields more reactants than products at equilibrium

Acid ferric chloride (FeCl₃) solution reduces to ferrous chloride (FeCl₂) solution by ?

• A.Nascent Hydrogen
• B.Molecular Hydrogen
• C.Atomic Oxygen
• D.Nascent Oxygen

Which metal can replace Cr in the formula of Cr₂O₃?

• A.Aluminum
• B.Iron
• C.Copper
• D.Zinc

When Qc < Kc, which one of the following statements is true?

• A.The reaction will stop completely
• B.The reaction will proceed in the reverse direction
• C.The reaction is at equilibrium
• D.The reaction will proceed in the forward direction

The reaction 2KMnO₄ + Cl₂ → 2KMnO₄ + 2KCl is:

• A.Oxidation reduction reaction
• B.Decomposition reaction
• C.Combination reaction
• D.Neutralization reaction

Loss of electron and proton is called?

• A.Reduction reaction
• B.Oxidation reaction
• C.Neutralization reaction
• D.Hydrolysis reaction

Reaction of acids with alcohol is also known as ?

• A.Esterification
• B.Saponification
• C.Hydrogenation
• D.Fermentation

If reactants and products do not change over time, the reaction is in?

• A.Static state
• B.Equilibrium
• C.Completion
• D.Termination