Acids and Bases in inorganic chemistry

By: Prof. Dr. Fazal Rehman | Last updated: February 3, 2024

Set of Important MCQs on Acids and Bases in inorganic chemistry for the preparation of tests for chemistry and biology. 

What is the pH of tears?

  1. 7.0
  2. 7.8
  3. 7.4
  4. 8.2

Question’s Answer: 7.4

Which of the mentioned concept is also called electron pair-donor acceptor system?

    1. Lewis
    2. Bronsted-Lowery
  1. Lux-Flood
  2. Usanovich

Question’s Answer: Lewis

Bases and reducing agents are electron-giving agents and known as ___?

  1. Nucleophile
  2. Electrophile
  3. Electrodative
  4. None of A, B, and C

Question’s Answer: Nucleophile

Lewis concept explain the formation of which bond?

  1. Ionic bond
  2. Co-ordinate bond
  3. Covalent bond
  4. Chemical bond

Question’s Answer: Co-ordinate bond

Lux-Flood concept is a donor-acceptor system of which of the following?

  1. Proton
  2. Oxide ion
  3. Neutron
  4. Electron pair

Question’s Answer: Oxide ion

Which of the mentioned is not soft acid according SHAB concept?

  1. Ag+
  2. Cu+
  3. K+
  4. Au+

Question’s Answer: K+

According to _____, “Acids are substances whose aqueous solutions turned blue litmus red and tasted sour”.

  1. Davy
  2. Liebig
  3. Rouelle
  4. Boyle

Question’s Answer: Boyle

Arrhenius concept explained ______

  1. Catalytic property of acid
  2. Quantitative determination of acid/ base strength.
  3. Constant heat of neutralization
  4. All of A, B, and C

Question’s Answer: All of A, B, and C

As said by Usanovich, a base is defined as any species ________ .

  1. Capable of giving up anions
  2. Combining with cations
  3. Neutralizing an acid to give a salt
  4. All of A, B, and C

Question’s Answer: All of A, B, and C

Which of the mentioned is not Lowery-Bronsted Base?

  1. HS
  2. H₂O
  3. NH3
  4. CI

Question’s Answer: HS

What is the pH of milk?

  1. 6.0
  2. 6.7
  3. 7.0
  4. 7.5

Question’s Answer: 6.7

Which of the mentioned concept is also called proton-donor acceptor system?

  1. Bronsted-Lowery
  2. Lewis
  3. Lux-Flood
  4. Usanovich

Question’s Answer: Bronsted-Lowery

According to SHAB, Lewis acid are divided into how many classes?

  1. Two classes
  2. Three classes
  3. Four classes
  4. None of A, B, and C

Question’s Answer: Two classes

What is the relative order of acidity of HF, HCl, HBr and HI acids?

  1. HCI > HBr > HI> HF
  2. HF > HCl > HBr > HI
  3. HI > HBr > HCl > HE
  4. HF > HI> HCl > HBr

Question’s Answer: HI > HBr > HCl > HE

What is the relative order of acidity of oxy acid?

  1. HCIO > HCIO2 > HCIO3 > HCIO4
  2. HCIO4 > HCIO3 > HCIO₂ > HCIO
  3. HCIO3 > HCIO2 > HCIO > HCIO4
  4. HCIO2 > HCIO4 > HCIO3 > HCIO

Question’s Answer: HCIO4 > HCIO3 > HCIO₂ > HCIO

What is the pH of pure water at 25°C. Kw = 1x 10-4?

  1. 1
  2. 7
  3. 12
  4. None of A, B, and C

Question’s Answer: 7

As said by SHAB concept, which of the mentioned is not hard acid?

  1. Cu+
  2. Li+
  3. K+
  4. Na+

Question’s Answer: Cu+

What is the ionic product equilibrium constant?

  1. Ka
  2. Kb
  3. Kc
  4. Kw

Question’s Answer: Kw

The value of Kw increases with temperature due to the ionization of water  _______ .

  1. Decreases
  2. Remains constant
  3. Increases
  4. None of A, B, and C

Question’s Answer: Increases

According to SHAB concept, the Lewis bases were classified on the basis of which of the following?

  1. Charge ion size
  2. Polarization consideration
  3. Electron and coordinating ability:
  4. All of A, B, and C

Question’s Answer: All of A, B, and C

The one in which the acceptor atom is of low positive charge, large size and has numerous outer electrons which can be easily excited is a ________ base.

  1. Soft Base
  2. Hard Base
  3. Soft Acid
  4. Hard Acid

Question’s Answer: Soft Acid

According to ______ phenomenon, All the strong acids have very close pKa value and they seem to have nearly equal strengths in aqueous solutions.

  1. Leveling effect
  2. Debye effect
  3. Electrophoretic effect
  4. Solvent effect

Question’s Answer: Leveling effect

The concentration of OH ions in a particular household ammonia solution is 0.0025. This ammonia solution is _______ .

  1. Basic
  2. Acidic
  3. Neutral
  4. None of A, B, and C

Question’s Answer: Basic

What is the pH of the 0.1 M HCl solution?

  1. 0.01
  2. 0.1
  3. 0.2
  4. 1

Question’s Answer: 1

The pH of the 1 M HCl is

  1. 0
  2. 0.1
  3. 1
  4. 0.2

Question’s Answer: 0

The sum of pH and pOH is equal to ___ .

A 12

  1. 13
  2. 14
  3. 2

Question’s Answer: 14

The most convenient and has nearest approach to a universal pH measurement is

  1. pH strips
  2. pH indicator
  3. The emf method
  4. The colorimetric

Question’s Answer: The emf method

Buffer solution are used to

  1. Increase the pH
  2. Decrease the pH
  3. Resist the pH
  4. None of A, B, and C

Question’s Answer: Resist the pH

A mixture of weak acid and its salt is ________.

  1. Alkaline buffer
  2. Acidic buffer
  3. Neutral buffer
  4. All of A, B, and C

Question’s Answer: Acidic buffer

Glass electrode cannot be used to measure the pH of pure

  1. Acetic acid
  2. Ethyl alcohol
  3. Gelatin
  4. All of A, B, and C

Question’s Answer: All of A, B, and C

Which of the following have pH value of 4.2?

  1. Vinegar
  2. Lemons
  3. Oranges
  4. Tomatoes

Question’s Answer: Tomatoes

If the pH of solution is 1, What will be its pOH?

  1. 13
  2. 16
  3. 7
  4. None of A, B, and C

Question’s Answer: 13

Which of the mentioned is not true regarding buffers?

A: are made up of weak acid and its salt

  1. They are made up of weak base and its salt
  2. They tend to resist a change in pH value
  3. They are made up of strong acid and weak base

Question’s Answer: They are made up of strong acid and weak base

Which of the mentioned mixture does not act as buffers?

  1. Acetic acid/sodium acetate
  2. Phosphoric acid/sodium phospahte
  3. Sodium chloride/hydrochloric acid
  4. Trisbase/HCI

Question’s Answer: Sodium chloride/hydrochloric acid

What is the pH of human stomach?

  1. 1.5 to 2.5
  2. 3.0 to 8.0
  3. 6.0 to 7.2
  4. None of A, B, and C

Question’s Answer: 1.5 to 2.5

Which of the mentioned is not Lowery-Bronsted acid?

  1. HCI
  2. H₂O
  3. HS
  4. CI

Question’s Answer: CI

Which of the mentioned is not Lewis acid?

  1. HCI
  2. BF3
  3. AICl3
  4. CI

Question’s Answer: CI

Which of the mentioned is not Lewis base?

  1. NH3
  2. H₂O
  3. Pyridine
  4. BF3

Question’s Answer: BF3

Which of the mentioned is not base according to Lux-Flood concept?

  1. Cao
  2. MgO
  3. PbO
  4. SiO2

Question’s Answer: SiO2

Which of the mentioned is not acid according to Lux-Flood concept?

  1. CaO

B: CO2

  1. SO3
  2. SiO2

Question’s Answer: CaO

Which of the mentioned is not soft base according SHAB concept?

  1. F
  2. CN-
  3. H
  4. R

Question’s Answer: F

Which of the mentioned is not hard base according SHAB concept?

  1. NH3
  2. N2H4
  3. RNH2
  4. F

Question’s Answer: F

More Inorganic Chemistry MCQs

  1. Chemical Bonding MCQs
  2. Acids and Bases in inorganic chemistry MCQs
  3. Boron And Aluminum MCQs
  4. Carbon and Silicon MCQs
  5. Hydrogen, Alkali, and Alkaline Earth Metals MCQs
  6. D-Block Elements MCQs [Chemistry]
  7. F-Block Elements MCQs
  8. Halogens MCQs
  9. Inert Gases MCQs
  10. Nitrogen and Phosphorus MCQs
  11. Oxygen and Sulphur MCQs
  12. Experimental Inorganic Chemistry MCQs
  13. Periodic Classification Of Elements And Periodicity Of Properties MCQs
  14. CHEMISTRY MCQs From all subjects of  Chemistry

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