Some Chemical Reactions MCQs with Answers

What happens when oil is burnt?

• A.Oxygen is consumed and hydrogen gas is released
• B.Only water vapour is produced
• C.Nitrogen gas and ash are formed
• D.Carbon dioxide and energy will be released

If K > 1, the reaction favors?

• A.Reactants
• B.Products
• C.Neither reactants nor products
• D.Both reactants and products equally

As the reaction proceeds, the rate of reaction?

• A.Increases
• B.First increases then decreases
• C.Remains constant
• D.Decreases

Calcium propionate and calcium acetate on heating together produce ?

• A.Ethyl methyl ketone
• B.Acetone
• C.Diethyl ketone
• D.Methyl propionate

The speed at which a chemical reaction proceeds is?

• A.Rate of reaction
• B.Reaction quotient
• C.Activation energy
• D.Equilibrium constant

Which one of the following is likely to give a precipitate with AgNO₃ solution?

• A.Distilled water
• B.NaNO₃
• C.Glucose
• D.NaCl

Polymerization of HCHO and CH₃CHO occurs in the presence of?

• A.Conc. H₂SO₄
• B.Dil. HCl
• C.NaOH
• D.HNO₃

Among the following, select one substance which completes this equation: + Sodium hydroxide → Sodium chloride + Water.

• A.Hydrochloric acid
• B.Sulphuric acid
• C.Nitric acid
• D.Carbonic acid

An endothermic reaction is one in which _?

• A.Heat is absorbed
• B.Heat is released
• C.No heat change occurs
• D.Light is emitted

Ketones are prepared by the oxidation of _?

• A.Primary alcohol
• B.Tertiary alcohol
• C.Secondary alcohol
• D.Carboxylic acid