Some Chemical Reactions MCQs with Answers

Which of the following process is endothermic?

• A.Combustion of methane
• B.Neutralization of HCl with NaOH
• C.The electrolysis of water
• D.Condensation of steam

One mole of an organic compound is completely burnt in oxygen. Which compound produces exactly three moles of water?

• A.Methane (CH₄)
• B.Glucose (C₆H₁₂O₆)
• C.Ethanol (C₂H₅OH)
• D.Methanol (CH₃OH)

Alkaline KMnO4 converts ethylene into _?

• A.Ethanol
• B.Acetaldehyde
• C.Formaldehyde
• D.Ethylene glycol

Hydroxylation of alkene can be carried out by?

• A.Concentrated H2SO4
• B.Acidic K2Cr2O7
• C.Alkaline KMnO4
• D.Dilute HCl

Reversible reaction is represented by which symbol?

• A.→
• B.=
• C.←
• D.⇌

Which type of reaction involves the exchange of ions?

• A.Combination reaction
• B.Decomposition reaction
• C.Double displacement reaction
• D.Neutralization reaction

When an acid reacts with a base, it forms ?

• A.Only salt
• B.Salt and hydrogen gas
• C.Salt and carbon dioxide
• D.Salt and water

Salt of weak bases react with strong acid to give _?

• A.Basic solution
• B.Neutral solution
• C.Acidic solution
• D.Colloidal solution

Le Chatelier's principle predicts?

• A.Catalyst effect on equilibrium
• B.Rate of reaction only
• C.Equilibrium shift due to changes
• D.Molecular weight of products

Alkalies react with fats to produce soap and _?

• A.Glycerin
• B.Ethanol
• C.Methanol
• D.Glycol