Chemistry

Acids and Bases

579 Questions

Acids and bases questions cover the chemical properties, common examples, and theoretical concepts of acidic and basic substances. Topics include identifying proton acceptors, recognizing amphoteric substances, and knowing the sources of everyday organic acids. These foundational chemistry questions are common across SSC, banking, and railways examinations.

Acid and base propertiesOrganic acidsAmphoteric substancesProton donors and acceptorsChemical formulas

Acids and Bases Questions

Multiple choice general knowledge science & technology
  1. Hydrochloric acid

  2. Carbolic Acid

  3. Sulphuric Acid

  4. Acetic Acid

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Oil of Vitriol is the historical common name for sulphuric acid (H2SO4). The name comes from the vitriol (sulfate) minerals used to produce it. Hydrochloric acid is muriatic acid, carbolic acid is phenol, and acetic acid is found in vinegar.

Multiple choice general knowledge
  1. H2No3

  2. H2CO3

  3. HCL

  4. H2SO4

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Carbonic acid (H2CO3) is formed when carbon dioxide is dissolved in water under pressure, creating the characteristic fizz in soft drinks. HCL and H2SO4 are strong, corrosive mineral acids, and H2No3 is an incorrect chemical formula for nitric acid (HNO3).

Multiple choice general knowledge
  1. Nitric Acid

  2. Sulphuric Acid

  3. Hydrocloric Acid

  4. None of the above

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

H2SO4 is the chemical formula for sulphuric acid, a strong mineral acid. The 'H' represents hydrogen (2 atoms), 'S' represents sulphur (1 atom), and 'O4' represents oxygen (4 atoms). Nitric acid is HNO3 and hydrochloric acid is HCl.

Multiple choice general knowledge
  1. Nitric Acid

  2. Sulphuric Acid

  3. Hydrocloric Acid

  4. None of the above

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

H2SO4 is the chemical formula for Sulphuric Acid (also spelled Sulfuric Acid). It is a strong diprotic acid with central sulfur atom bonded to two hydroxyl groups (OH) and two oxygen atoms via double bonds. Nitric Acid is HNO3, and Hydrochloric Acid (misspelled as 'Hydrocloric' in the option) is HCl.

Multiple choice general knowledge science & technology
  1. impure dilute methonaic acid

  2. pure dilute acetic acid

  3. impure dilute acetic acid

  4. pure dilute methonaic acid

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Vinegar is essentially impure dilute acetic acid, containing around 5-8% acetic acid in water along with other compounds that give it its characteristic flavor and aroma. It's not pure acetic acid, and it's definitely not methanoic (formic) acid. Option C correctly captures both the dilute and impure nature of vinegar.

Multiple choice general knowledge science & technology
  1. Hydrochloric Acid

  2. Chlorine

  3. Chloroform

  4. Sulphuric Acid

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

HCl is the chemical formula for hydrogen chloride, which in aqueous solution forms hydrochloric acid, a strong acid. Chlorine is Cl2, Chloroform is CHCl3, and Sulphuric Acid is H2SO4. Hydrochloric acid is found in gastric juice and used industrially.

Multiple choice general knowledge science & technology
  1. Sulfuric Acid

  2. HydroSulfuric Acid

  3. Hydrochloric Acid

  4. Chloric Acid

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

H2S represents hydrogen sulfide, which when dissolved in water forms a weak acid traditionally called hydrosulfuric acid. While technically H2S gas itself is hydrogen sulfide, in quiz contexts 'HydroSulfuric Acid' is the expected answer. Sulfuric acid is H2SO4, hydrochloric acid is HCl, and chloric acid is HClO3.

Multiple choice general knowledge science & technology
  1. N3H

  2. H3N

  3. N3HSN

  4. H3NS

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Hydrazoic acid has the chemical formula HN3 (or N3H as written in options). It's a highly explosive and toxic compound consisting of a linear chain of three nitrogen atoms bonded to hydrogen. The formula N3H correctly represents this structure.

Multiple choice general knowledge science & technology
  1. Hydrochloric acid

  2. Sulphuric acid

  3. Hydrogen sulphide

  4. Nitric acid

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Sulphuric acid (H2SO4) is called the 'King of Chemicals' due to its enormous industrial importance - it's used in fertilizer production, petroleum refining, and chemical manufacturing. It has the highest production volume of any industrial chemical worldwide.

Multiple choice general knowledge science & technology
  1. Hydrochloric acid

  2. Sulphuric acid

  3. Hydrogen sulphide

  4. Nitric acid

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Sulfuric acid (H2SO4) is called the 'King of chemicals' because of its immense industrial importance and widespread use in manufacturing. It's the most-produced industrial chemical worldwide and a key indicator of a country's industrial development.

Multiple choice general knowledge science & technology
  1. Hydrochloric acid

  2. Sulphuric acid

  3. Hydrogen sulphide

  4. Nitric acid

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Sulphuric acid (H2SO4) is called the 'King of chemicals' because of its immense industrial importance and widespread use. It has the highest production volume among all chemicals globally. Hydrochloric acid, hydrogen sulfide, and nitric acid are important chemicals but don't have this title.

Multiple choice general knowledge science & technology
  1. Hydrochloric acid

  2. Sulphuric acid

  3. Hydrogen sulphide

  4. Nitric acid

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Sulphuric acid (H2SO4) is called the 'King of chemicals' because of its enormous industrial importance - it's used in fertilizer production, petroleum refining, chemical manufacturing, and more. It's the most-produced industrial chemical worldwide by volume.

Multiple choice general knowledge science & technology
  1. Hydrochloric acid

  2. Sulphuric acid

  3. Hydrogen sulphide

  4. Nitric acid

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Sulphuric acid (H2SO4) is called the 'King of chemicals' because of its enormous industrial importance - it's used in fertilizer production, petroleum refining, chemical manufacturing, and more. It's the most-produced industrial chemical worldwide by volume.

Multiple choice general knowledge
  1. Pottasium Sulphate

  2. Tri-Sulphate aluminum oxide

  3. Aluminum sulfate

  4. Sulphuric Acid

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Al2(SO4)3 is Aluminum sulfate - Al is Aluminum (not Potassium), and SO4 is the sulfate ion. The formula shows 2 aluminum ions balancing 3 sulfate ions. Options B and D are incorrect chemical names, and option A misidentifies the metal.