Q. Which of the following compounds contains hydrogen in a negative oxidation state? (2021)
-
A.
HCl
-
B.
NaH
-
C.
H2O
-
D.
NH3
Solution
In sodium hydride (NaH), hydrogen has an oxidation state of -1.
Correct Answer: B — NaH
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Q. Which of the following compounds has a triple bond? (2022)
-
A.
Ethylene
-
B.
Acetylene
-
C.
Propylene
-
D.
Butane
Solution
Acetylene (C2H2) contains a triple bond between the two carbon atoms.
Correct Answer: B — Acetylene
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Q. Which of the following compounds is a branched alkane? (2022)
-
A.
C5H12
-
B.
C4H10
-
C.
C3H8
-
D.
C2H6
Solution
C5H12 can exist as both straight-chain (pentane) and branched (isopentane) forms.
Correct Answer: A — C5H12
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Q. Which of the following compounds is a common oxidation state of vanadium? (2022)
-
A.
V2O5
-
B.
VO
-
C.
V2O3
-
D.
All of the above
Solution
All the listed compounds represent common oxidation states of vanadium: +5 in V2O5, +2 in VO, and +3 in V2O3.
Correct Answer: D — All of the above
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Q. Which of the following compounds is a common oxidizing agent? (2019)
-
A.
HCl
-
B.
KMnO4
-
C.
NaCl
-
D.
CaO
Solution
Potassium permanganate (KMnO4) is a well-known oxidizing agent used in various chemical reactions.
Correct Answer: B — KMnO4
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Q. Which of the following compounds is a cyclic alkane? (2022)
-
A.
Cyclopropane
-
B.
Butene
-
C.
Hexane
-
D.
Pentene
Solution
Cyclopropane is a cyclic alkane with three carbon atoms in a ring.
Correct Answer: A — Cyclopropane
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Q. Which of the following compounds is a hydrogen halide? (2022)
-
A.
H2O
-
B.
NH3
-
C.
HCl
-
D.
CH4
Solution
Hydrogen chloride (HCl) is a hydrogen halide, which is a binary compound of hydrogen and a halogen.
Correct Answer: C — HCl
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Q. Which of the following compounds is a strong acid that contains hydrogen? (2022)
-
A.
HCl
-
B.
NaOH
-
C.
NH3
-
D.
H2O
Solution
Hydrochloric acid (HCl) is a strong acid that contains hydrogen.
Correct Answer: A — HCl
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Q. Which of the following compounds is a tertiary amine? (2022)
-
A.
Methylamine
-
B.
Ethylamine
-
C.
Trimethylamine
-
D.
Aniline
Solution
Trimethylamine is a tertiary amine as it has three alkyl groups attached to the nitrogen atom.
Correct Answer: C — Trimethylamine
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Q. Which of the following compounds is a typical example of a complex ion? (2022)
-
A.
NaCl
-
B.
CuSO4
-
C.
Ag(NH3)2+
-
D.
Fe2O3
Solution
Ag(NH3)2+ is a complex ion formed by silver and ammonia.
Correct Answer: C — Ag(NH3)2+
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Q. Which of the following compounds is a typical example of a transition metal complex? (2022)
-
A.
NaCl
-
B.
CuSO4
-
C.
Fe(CN)6^4-
-
D.
MgO
Solution
Fe(CN)6^4- is a typical example of a transition metal complex.
Correct Answer: C — Fe(CN)6^4-
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Q. Which of the following compounds is an amphoteric oxide? (2022)
-
A.
Na2O
-
B.
MgO
-
C.
Al2O3
-
D.
SiO2
Solution
Aluminum oxide (Al2O3) is an amphoteric oxide, meaning it can react with both acids and bases.
Correct Answer: C — Al2O3
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Q. Which of the following compounds is an aromatic amine? (2019)
-
A.
Ethylamine
-
B.
Aniline
-
C.
Cyclohexylamine
-
D.
Propylamine
Solution
Aniline is an aromatic amine as it contains a benzene ring attached to the amine group.
Correct Answer: B — Aniline
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Q. Which of the following compounds is an aryl halide? (2019)
-
A.
Chloroethane
-
B.
Bromobenzene
-
C.
Iodobutane
-
D.
Chloropropane
Solution
Bromobenzene is an aryl halide as it contains a halogen atom bonded to an aromatic ring.
Correct Answer: B — Bromobenzene
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Q. Which of the following compounds is an example of a coordination complex? (2022)
-
A.
NaCl
-
B.
CuSO4
-
C.
[Cu(NH3)4]SO4
-
D.
Fe2O3
Solution
[Cu(NH3)4]SO4 is a coordination complex where copper is coordinated to ammonia ligands.
Correct Answer: C — [Cu(NH3)4]SO4
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Q. Which of the following compounds is an example of a covalent compound formed by a p-block element? (2022)
-
A.
NaCl
-
B.
MgO
-
C.
SiCl4
-
D.
CaF2
Solution
SiCl4 is a covalent compound formed by silicon, a p-block element.
Correct Answer: C — SiCl4
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Q. Which of the following compounds is an example of a covalent compound? (2019)
-
A.
NaCl
-
B.
MgO
-
C.
SiO2
-
D.
CaF2
Solution
SiO2 (silicon dioxide) is a covalent compound formed by the sharing of electrons between silicon and oxygen.
Correct Answer: C — SiO2
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Q. Which of the following compounds is an example of a haloarene? (2019)
-
A.
Chloroethane
-
B.
Bromobenzene
-
C.
Iodobutane
-
D.
Chloropropane
Solution
Bromobenzene is a haloarene as it contains a halogen atom directly attached to an aromatic ring.
Correct Answer: B — Bromobenzene
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Q. Which of the following compounds is an isomer of butane? (2021)
-
A.
2-methylpropane
-
B.
Pentane
-
C.
Propane
-
D.
Ethane
Solution
2-methylpropane is an isomer of butane, having the same molecular formula but a different structure.
Correct Answer: A — 2-methylpropane
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Q. Which of the following compounds is formed when magnesium reacts with oxygen? (2019)
-
A.
MgO
-
B.
MgO2
-
C.
Mg2O3
-
D.
Mg3O4
Solution
Magnesium reacts with oxygen to form magnesium oxide (MgO).
Correct Answer: A — MgO
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Q. Which of the following compounds is formed when magnesium reacts with water? (2022)
-
A.
MgO
-
B.
Mg(OH)2
-
C.
MgCl2
-
D.
MgSO4
Solution
When magnesium reacts with water, it forms magnesium hydroxide, Mg(OH)2.
Correct Answer: B — Mg(OH)2
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Q. Which of the following compounds is known for its antibacterial properties? (2023)
-
A.
Chlorhexidine
-
B.
Sodium chloride
-
C.
Glucose
-
D.
Fructose
Solution
Chlorhexidine is an antiseptic that is effective against a wide range of bacteria and is commonly used in medical settings.
Correct Answer: A — Chlorhexidine
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Q. Which of the following compounds is least reactive in nucleophilic substitution reactions? (2023)
-
A.
1-bromopropane
-
B.
2-bromopropane
-
C.
3-bromopropane
-
D.
Benzyl bromide
Solution
Benzyl bromide is less reactive in nucleophilic substitution due to the resonance stabilization of the benzyl cation formed during the reaction.
Correct Answer: D — Benzyl bromide
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Q. Which of the following compounds is least soluble in water? (2022)
-
A.
Chloroethane
-
B.
Bromobenzene
-
C.
Iodopropane
-
D.
Chlorobenzene
Solution
Bromobenzene is least soluble in water due to its non-polar nature and the presence of the aromatic ring.
Correct Answer: B — Bromobenzene
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Q. Which of the following compounds is responsible for ozone depletion? (2019)
-
A.
Methane
-
B.
Chlorofluorocarbons (CFCs)
-
C.
Carbon Dioxide
-
D.
Nitrous Oxide
Solution
Chlorofluorocarbons (CFCs) are known to deplete the ozone layer by breaking down ozone molecules in the stratosphere.
Correct Answer: B — Chlorofluorocarbons (CFCs)
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Q. Which of the following compounds is responsible for ozone layer depletion? (2019)
-
A.
Methane
-
B.
Chlorofluorocarbons (CFCs)
-
C.
Carbon Dioxide
-
D.
Nitrous Oxide
Solution
Chlorofluorocarbons (CFCs) are known to deplete the ozone layer by breaking down ozone molecules in the stratosphere.
Correct Answer: B — Chlorofluorocarbons (CFCs)
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Q. Which of the following compounds is used as a bleaching agent? (2022)
-
A.
H2O2
-
B.
NaCl
-
C.
CaO
-
D.
NH4Cl
Solution
Hydrogen peroxide (H2O2) is commonly used as a bleaching agent.
Correct Answer: A — H2O2
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Q. Which of the following compounds is used as a desiccant? (2022)
-
A.
Calcium chloride
-
B.
Calcium sulfate
-
C.
Calcium carbonate
-
D.
Calcium hydroxide
Solution
Calcium chloride is commonly used as a desiccant due to its hygroscopic nature.
Correct Answer: A — Calcium chloride
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Q. Which of the following compounds is used as a drying agent? (2023)
-
A.
Calcium chloride
-
B.
Sodium chloride
-
C.
Potassium bromide
-
D.
Magnesium sulfate
Solution
Calcium chloride (CaCl2) is commonly used as a drying agent due to its hygroscopic nature.
Correct Answer: A — Calcium chloride
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Q. Which of the following compounds is used as a fire retardant? (2021)
-
A.
Boric acid
-
B.
Phosphoric acid
-
C.
Aluminum chloride
-
D.
Gallium arsenide
Solution
Boric acid is commonly used as a fire retardant due to its ability to inhibit combustion.
Correct Answer: A — Boric acid
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