The Inorganic Chemistry section covers the structure, properties, reactions, and applications of elements and their compounds , forming a core pillar of Class 11–12 Chemistry and undergraduate syllabi . This category is designed for school students, undergraduate learners, and competitive exam aspirants , with strong emphasis on NCERT alignment, conceptual clarity, and exam relevance .
In this section, you will study:
Periodic table and periodic trends – atomic size, ionization energy, electronegativity, and reactivity
Chemical bonding and molecular structure – ionic, covalent, metallic bonding, VBT, MOT, and hybridization
Hydrogen and s-block elements – properties, compounds, and applications
p-block elements – group-wise chemistry, important compounds, and trends
d- and f-block elements – transition metals, coordination behavior, and properties
Coordination compounds – nomenclature, isomerism, bonding theories, and applications
Qualitative inorganic analysis – identification of ions and systematic analysis
Industrial and biological importance of inorganic compounds
NCERT- and UG-aligned explanations , supported by reaction mechanisms, tables, diagrams, MCQs, numericals, and PYQs
The content is structured to build strong fundamentals , improve memorization through logic , and help students tackle both theoretical and application-based questions confidently.
Develop a solid foundation in Inorganic Chemistry to excel in school examinations, undergraduate courses, and competitive exams such as NEET, JEE, and CUET .
Q. Which of the following acids is a strong acid and can completely dissociate in water?
A.
Acetic acid
B.
Sulfuric acid
C.
Phosphoric acid
D.
Carbonic acid
Show solution
Solution
Sulfuric acid is a strong acid that completely dissociates in water, making it a strong electrolyte.
Correct Answer:
B
— Sulfuric acid
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Q. Which of the following acids is a strong acid in aqueous solution?
A.
HCl
B.
HF
C.
H2CO3
D.
CH3COOH
Show solution
Solution
HCl is a strong acid that completely dissociates in water, while HF, H2CO3, and CH3COOH are weak acids.
Correct Answer:
A
— HCl
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Q. Which of the following acids is a strong acid that can be used to dissolve metals?
A.
HCl
B.
H2SO4
C.
HNO3
D.
All of the above
Show solution
Solution
All of the listed acids (HCl, H2SO4, HNO3) are strong acids that can effectively dissolve metals.
Correct Answer:
D
— All of the above
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Q. Which of the following acids is a strong acid?
A.
HCl
B.
HF
C.
H2CO3
D.
CH3COOH
Show solution
Solution
HCl is a strong acid that completely dissociates in water, while HF, H2CO3, and CH3COOH are weak acids.
Correct Answer:
A
— HCl
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Q. Which of the following acids is commonly used in car batteries?
A.
Sulfuric acid
B.
Hydrochloric acid
C.
Nitric acid
D.
Acetic acid
Show solution
Solution
Sulfuric acid is the primary acid used in lead-acid batteries, which are commonly found in cars.
Correct Answer:
A
— Sulfuric acid
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Q. Which of the following acids is commonly used in the leaching process of gold extraction?
A.
Hydrochloric acid
B.
Nitric acid
C.
Sulfuric acid
D.
Cyanide solution
Show solution
Solution
Cyanide solution is used in the leaching process to dissolve gold from its ore.
Correct Answer:
D
— Cyanide solution
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Q. Which of the following acids is commonly used in the leaching process of gold?
A.
Hydrochloric acid
B.
Nitric acid
C.
Sulfuric acid
D.
Cyanide solution
Show solution
Solution
Cyanide solution is commonly used in the leaching process to extract gold from its ores.
Correct Answer:
D
— Cyanide solution
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Q. Which of the following acids is commonly used in the leaching process of metals?
A.
Sulfuric acid
B.
Hydrochloric acid
C.
Nitric acid
D.
Acetic acid
Show solution
Solution
Sulfuric acid is commonly used in the leaching process to dissolve metal ores.
Correct Answer:
A
— Sulfuric acid
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Q. Which of the following acids is commonly used in the pickling process of metals?
A.
Sulfuric acid
B.
Hydrochloric acid
C.
Nitric acid
D.
Acetic acid
Show solution
Solution
Hydrochloric acid is commonly used in the pickling process to remove rust and scale from metals.
Correct Answer:
B
— Hydrochloric acid
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Q. Which of the following acids is commonly used in the production of fertilizers?
A.
Sulfuric acid
B.
Hydrochloric acid
C.
Nitric acid
D.
Acetic acid
Show solution
Solution
Nitric acid is widely used in the production of fertilizers, particularly ammonium nitrate.
Correct Answer:
C
— Nitric acid
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Q. Which of the following acids is diprotic?
A.
HCl
B.
H2SO4
C.
HNO3
D.
CH3COOH
Show solution
Solution
H2SO4 (sulfuric acid) is a diprotic acid, meaning it can donate two protons (H+ ions) in solution.
Correct Answer:
B
— H2SO4
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Q. Which of the following acids is used in the production of fertilizers?
A.
Phosphoric acid
B.
Sulfuric acid
C.
Nitric acid
D.
All of the above
Show solution
Solution
All of the listed acids (phosphoric, sulfuric, and nitric) are used in the production of various fertilizers.
Correct Answer:
D
— All of the above
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Q. Which of the following bases is commonly used in the manufacture of soap?
A.
Sodium hydroxide
B.
Potassium hydroxide
C.
Calcium hydroxide
D.
Ammonium hydroxide
Show solution
Solution
Sodium hydroxide is commonly used in the saponification process to produce soap from fats and oils.
Correct Answer:
A
— Sodium hydroxide
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Q. Which of the following bases is commonly used in the production of soap?
A.
Sodium hydroxide
B.
Potassium hydroxide
C.
Calcium hydroxide
D.
Ammonium hydroxide
Show solution
Solution
Sodium hydroxide is commonly used in the saponification process to produce soap.
Correct Answer:
A
— Sodium hydroxide
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Q. Which of the following bonds is the most polar?
A.
C-H
B.
O-H
C.
N-H
D.
S-H
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Solution
The O-H bond is the most polar due to the high electronegativity difference between oxygen and hydrogen.
Correct Answer:
B
— O-H
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Q. Which of the following complexes is an example of a square planar geometry?
A.
[Ni(CN)4]2-
B.
[Co(NH3)6]3+
C.
[Fe(H2O)6]2+
D.
[CuCl4]2-
Show solution
Solution
[Ni(CN)4]2- is a square planar complex, while the others typically exhibit octahedral geometry.
Correct Answer:
A
— [Ni(CN)4]2-
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Q. Which of the following compounds acts as a Brønsted-Lowry acid?
A.
NH3
B.
H2O
C.
HCl
D.
NaOH
Show solution
Solution
HCl acts as a Brønsted-Lowry acid because it donates a proton (H+).
Correct Answer:
C
— HCl
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Q. Which of the following compounds acts as a Brønsted-Lowry base?
A.
HCl
B.
NH3
C.
H2O
D.
CH3COOH
Show solution
Solution
NH3 acts as a Brønsted-Lowry base because it can accept a proton.
Correct Answer:
B
— NH3
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Q. Which of the following compounds acts as a Lewis acid?
A.
BF3
B.
NH3
C.
H2O
D.
NaOH
Show solution
Solution
BF3 (boron trifluoride) is a Lewis acid because it can accept an electron pair.
Correct Answer:
A
— BF3
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Q. Which of the following compounds contains hydrogen in the -1 oxidation state?
A.
H2O
B.
NH3
C.
HCl
D.
NaH
Show solution
Solution
In sodium hydride (NaH), hydrogen has an oxidation state of -1.
Correct Answer:
D
— NaH
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Q. Which of the following compounds is a coordination complex?
A.
NaCl
B.
CuSO4
C.
Ag(NH3)2Cl
D.
H2O
Show solution
Solution
Ag(NH3)2Cl is a coordination complex where silver is coordinated to two ammonia molecules.
Correct Answer:
C
— Ag(NH3)2Cl
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Q. Which of the following compounds is a coordination compound?
A.
NaCl
B.
Cu(NH3)4SO4
C.
H2O
D.
CCl4
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Solution
Cu(NH3)4SO4 is a coordination compound with a central metal ion surrounded by ligands.
Correct Answer:
B
— Cu(NH3)4SO4
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Q. Which of the following compounds is a Lewis acid?
A.
NH3
B.
BF3
C.
H2O
D.
NaCl
Show solution
Solution
Boron trifluoride (BF3) is a Lewis acid because it can accept an electron pair.
Correct Answer:
B
— BF3
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Q. Which of the following compounds is a salt?
A.
NaCl
B.
H2O
C.
NH3
D.
H2SO4
Show solution
Solution
NaCl (sodium chloride) is a salt formed from the neutralization of an acid (HCl) and a base (NaOH).
Correct Answer:
A
— NaCl
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Q. Which of the following compounds is a strong acid derived from hydrogen?
A.
HCl
B.
H2O
C.
NH3
D.
CH4
Show solution
Solution
Hydrochloric acid (HCl) is a strong acid, while water (H2O), ammonia (NH3), and methane (CH4) are not.
Correct Answer:
A
— HCl
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Q. Which of the following compounds is a strong acid?
A.
H2O
B.
H2SO4
C.
H2O2
D.
NH3
Show solution
Solution
H2SO4 (sulfuric acid) is a strong acid, while H2O is neutral, H2O2 is a weak oxidizer, and NH3 is a weak base.
Correct Answer:
B
— H2SO4
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Q. Which of the following compounds is an example of a coordination compound?
A.
NaCl
B.
CuSO4
C.
Ag(NH3)2Cl
D.
H2O
Show solution
Solution
Ag(NH3)2Cl is a coordination compound with a central silver ion coordinated to two ammonia ligands.
Correct Answer:
C
— Ag(NH3)2Cl
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Q. Which of the following compounds is an example of a hydrogen halide?
A.
H2O
B.
HCl
C.
NH3
D.
CH4
Show solution
Solution
Hydrochloric acid (HCl) is an example of a hydrogen halide, which consists of hydrogen and a halogen.
Correct Answer:
B
— HCl
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Q. Which of the following compounds is formed when hydrogen reacts with chlorine?
A.
Hydrochloric acid
B.
Hydrogen chloride
C.
Chlorine gas
D.
Hydrogen peroxide
Show solution
Solution
When hydrogen reacts with chlorine, it forms hydrogen chloride (HCl), which is a gas at room temperature.
Correct Answer:
B
— Hydrogen chloride
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Q. Which of the following coordination compounds contains a bidentate ligand?
A.
[Cu(NH3)4]2+
B.
[Ni(C2O4)2]2-
C.
[Fe(CN)6]3-
D.
[Ag(NH3)2]+
Show solution
Solution
Oxalate (C2O4) is a bidentate ligand that can form two bonds with a metal center.
Correct Answer:
B
— [Ni(C2O4)2]2-
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