Some Chemical Reactions MCQs with Answers

Addition of HBr to isobutylene mainly gives

• A.sec-butyl bromide
• B.tert-butyl bromide
• C.n-butyl bromide
• D.isobutyl bromide

Which of the following increases the rate of a chemical reaction?

• A.Catalyst
• B.Inhibitor
• C.Reactant
• D.Product

By decreasing the size of solute particles, the solubility of solid in liquid will _?

• A.Increase
• B.Decrease
• C.Remain unchanged
• D.First increase then decrease

Smoke is an example of _?

• A.Liquid in gas
• B.Gas in solid
• C.Solid in gas
• D.Gas in liquid

The reagent used to reduce carboxylic group to an alcohol is ?

• A.H2SO4
• B.KMnO4
• C.NaBH4
• D.LiAlH4

What is the value of the equilibrium constant for the decomposition of ozone at 25°C?

• A.10⁶⁵
• B.10⁻⁶⁵
• C.10³²
• D.10⁻³²

The reaction of an alcohol with sodium produces

• A.Alkoxide
• B.Aldehyde
• C.Carboxylic acid
• D.Ester

When salt of strong and weak acid is dissolved in water, the anion of salt undergoes hydrolysis and a basic solution results. What is the equilibrium constant for this reaction?

• A.Kw/Ka
• B.Ka/Kw
• C.Kw × Ka
• D.Ka × Kb

3-Ethyl-2-Pentene on ozonolysis gives?

• A.3-Pentanone and Ethanal
• B.2-Pentanone and Propanal
• C.3-Pentanone and Propanal
• D.2-Pentanone and Ethanal

The rate of E1 reactions depend upon?

• A.Concentration of substrate
• B.Concentration of nucleophile
• C.Concentration of both substrate and nucleophile
• D.None of these