12th Chemistry One Mark Questions with Answers. We covered all the 12th Chemistry One Mark Questions with Answers in this post for free so that you can practice well for the exam.
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12th Chemistry One Mark Objective Questions with Answers for Students
The strongest Lewis acid among the following is
(A) BF3
(B) BCl3
(C) BBr3
(D) Bl3
Option d – BI3
According to Bronsted concept, the base is
(A) Proton doner
(B) Proton loser
(C) Proton accepter
(D) Electron accepter
Option c – Proton accepter
Which of the following is not a Lewis acid?
(A) KCI
(B) SnCl4
(C) BF3
(D) FeCl3
Option a – KCl
The conjugate acid of a strong base is
(A) Strong acid
(B) Weak acid
(C) Strong base
(D) Weak base
Option b – Weak acid
Water is a
(A) protic solvent
(B) Amphoteric acid
(C) Proton accepter
(D) None of these
Option c – Proton accepter
Among the following examples, Arrhenius acid is
(A) NH3
(B) SO2
(C) HNO3
(D) AICl3
Option c – HNO3
Which of the following is not an Arrhenius base?
(A) NaOH
(B) NH3
(C) Ba(OH)2
(D) KOH
Option b – NH3
An electrolyte
(A) Gives complex ions in solution.
(B) Dissolved in water to give ions.
(C) Ionized in the solid state.
(D) Produce ions only when electricity passed through it.
Option b – Dissolved in water to give ions
The degree of dissociation does not depend on
(A) the Nature of the solvent
(B) the Nature of the Solute
(C) Temperature
(D) the Electric current
Option d – the Electric current
Lewis acid
(A) Presence of H atom
(B) Electron pair doner
(C) Electron pair acceptor
(D) Electron-rich molecule
Option c – Electron pair acceptor
Lewis acids are
(A) Electron-rich molecules or species
(B) Electron deficient species.
(C) Nucleophiles
(D) Both ‘A’ and ‘C’
Option a – Electron-rich molecules or species
The degree of ionization of a compound depends on
(A) Size and solute particles.
(B) Nature of solute
(C) Nature of vessel used
(D) Quantity of electricity passed.
Option b – Nature of solute
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