Major Competitive Exams
Q. Which of the following compounds can undergo elimination reaction to form an alkene?
-
A.
1-chloropropane
-
B.
2-chloropropane
-
C.
3-chloropropane
-
D.
chlorobenzene
Solution
2-chloropropane can undergo elimination to form propene, while the others are less favorable for elimination.
Correct Answer: B — 2-chloropropane
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Q. Which of the following compounds can undergo Friedel-Crafts alkylation?
-
A.
Benzene
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B.
Cyclohexane
-
C.
Ethylene
-
D.
Acetylene
Solution
Benzene can undergo Friedel-Crafts alkylation, a reaction where an alkyl group is introduced to the aromatic ring.
Correct Answer: A — Benzene
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Q. Which of the following compounds can undergo nucleophilic substitution?
-
A.
Benzene
-
B.
Chloroethane
-
C.
Cyclohexane
-
D.
Ethylene
Solution
Chloroethane can undergo nucleophilic substitution due to the presence of a good leaving group (Cl).
Correct Answer: B — Chloroethane
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Q. Which of the following compounds can undergo oxidation to form a ketone?
-
A.
1-Butanol
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B.
2-Butanol
-
C.
Cyclohexanol
-
D.
Ethyl alcohol
Solution
2-Butanol can be oxidized to form butanone (a ketone).
Correct Answer: B — 2-Butanol
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Q. Which of the following compounds can undergo polymerization to form polyethylene?
-
A.
Propylene
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B.
Butylene
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C.
Ethylene
-
D.
Isobutylene
Solution
Ethylene can undergo addition polymerization to form polyethylene, a common plastic.
Correct Answer: C — Ethylene
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Q. Which of the following compounds cannot be oxidized?
-
A.
Aldehyde
-
B.
Primary alcohol
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C.
Secondary alcohol
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D.
Ketone
Solution
Ketones cannot be oxidized further under normal conditions, unlike aldehydes and alcohols.
Correct Answer: D — Ketone
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Q. Which of the following compounds contains a carboxylic acid functional group? (2021)
-
A.
C2H5OH
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B.
C3H6O
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C.
C2H4COOH
-
D.
C4H10
Solution
C2H4COOH (acetic acid) contains the carboxylic acid functional group (-COOH).
Correct Answer: C — C2H4COOH
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Q. Which of the following compounds contains a coordinate bond? (2023)
-
A.
NH3
-
B.
H2O
-
C.
CO
-
D.
NaCl
Solution
Carbon monoxide (CO) contains a coordinate bond between carbon and oxygen.
Correct Answer: C — CO
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Q. Which of the following compounds contains a double bond? (2023)
-
A.
H2O
-
B.
CO2
-
C.
NH3
-
D.
CH4
Solution
Carbon dioxide (CO2) contains double bonds between carbon and oxygen.
Correct Answer: B — CO2
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Q. Which of the following compounds contains a p-block element?
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A.
NaCl
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B.
MgO
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C.
AlCl3
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D.
Fe2O3
Solution
AlCl3 contains aluminum, which is a p-block element.
Correct Answer: C — AlCl3
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Q. Which of the following compounds contains a p-block element? (2022) 2022
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A.
NaCl
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B.
MgO
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C.
SiO2
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D.
Fe2O3
Solution
Silicon dioxide (SiO2) contains silicon, which is a p-block element.
Correct Answer: C — SiO2
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Q. Which of the following compounds contains hydrogen in a +1 oxidation state?
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A.
H2O
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B.
H2S
-
C.
NaH
-
D.
LiH
Solution
In water (H2O), hydrogen has an oxidation state of +1.
Correct Answer: A — H2O
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Q. Which of the following compounds contains hydrogen in a negative oxidation state? (2021)
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A.
HCl
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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 does NOT exhibit geometric isomerism?
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A.
Cis-2-butene
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B.
Trans-2-butene
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C.
1,2-dichloroethene
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D.
Ethane
Solution
Ethane does not have a double bond or any substituents that would allow for geometric isomerism.
Correct Answer: D — Ethane
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Q. Which of the following compounds does NOT exhibit isomerism?
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A.
C2H4
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B.
C3H6
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C.
C4H8
-
D.
C5H10
Solution
C2H4 (ethylene) does not have enough carbon atoms to exhibit isomerism.
Correct Answer: A — C2H4
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Q. Which of the following compounds does NOT exhibit optical isomerism?
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A.
Lactic acid
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B.
Tartaric acid
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C.
2-butanol
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D.
Butane
Solution
Butane does not have a chiral center and therefore does not exhibit optical isomerism.
Correct Answer: D — Butane
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Q. Which of the following compounds does NOT show optical isomerism?
-
A.
Lactic acid
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B.
Tartaric acid
-
C.
2-Butanol
-
D.
Butane
Solution
Butane does not show optical isomerism as it does not have a chiral center.
Correct Answer: D — Butane
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Q. Which of the following compounds exhibits geometric isomerism?
-
A.
1-butene
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B.
2-butene
-
C.
butane
-
D.
cyclohexane
Solution
2-butene has a double bond between the second and third carbon atoms, allowing for cis and trans isomers.
Correct Answer: B — 2-butene
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Q. Which of the following compounds exhibits hydrogen bonding?
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A.
HCl
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B.
NH3
-
C.
CH4
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D.
NaCl
Solution
NH3 exhibits hydrogen bonding due to the presence of a nitrogen atom bonded to hydrogen.
Correct Answer: B — NH3
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Q. Which of the following compounds exhibits sp3d hybridization?
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A.
SF4
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B.
XeF2
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C.
NH3
-
D.
C2H4
Solution
In SF4, the sulfur atom is sp3d hybridized, resulting in a seesaw molecular geometry.
Correct Answer: A — SF4
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Q. Which of the following compounds has a dipole moment? (2023)
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A.
CO2
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B.
CH4
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C.
HCl
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D.
CCl4
Solution
HCl has a dipole moment because it is a polar molecule with a significant difference in electronegativity between hydrogen and chlorine.
Correct Answer: C — HCl
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Q. Which of the following compounds has a linear shape?
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A.
H2O
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B.
C2H2
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C.
NH3
-
D.
CH4
Solution
C2H2 (ethyne) has a linear shape due to sp hybridization of carbon.
Correct Answer: B — C2H2
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Q. Which of the following compounds has a trigonal planar geometry?
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A.
CH4
-
B.
BF3
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C.
NH3
-
D.
H2O
Solution
BF3 has a trigonal planar geometry due to the sp2 hybridization of boron.
Correct Answer: B — BF3
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Q. Which of the following compounds has the highest boiling point?
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A.
CH4
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B.
C2H6
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C.
C3H8
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D.
C4H10
Solution
C4H10 (butane) has the highest boiling point due to its larger molecular size and greater van der Waals forces.
Correct Answer: D — C4H10
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Q. Which of the following compounds has the highest electronegativity difference?
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A.
HCl
-
B.
NaCl
-
C.
CO
-
D.
CH4
Solution
Sodium chloride (NaCl) has the highest electronegativity difference between sodium and chlorine.
Correct Answer: B — NaCl
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Q. Which of the following compounds is a cyclic hydrocarbon?
-
A.
C6H12
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B.
C5H10
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C.
C4H8
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D.
C3H6
Solution
C6H12 can be cyclohexane, which is a cyclic hydrocarbon.
Correct Answer: A — C6H12
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Q. Which of the following compounds is a cycloalkane?
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A.
C3H6
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B.
C5H10
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C.
C4H8
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D.
C6H12
Solution
C5H10 can be a cycloalkane (cyclopentane) as it forms a ring structure.
Correct Answer: B — C5H10
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Q. Which of the following compounds is a derivative of carboxylic acid?
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A.
Alcohol
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B.
Ester
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C.
Aldehyde
-
D.
Ketone
Solution
Esters are derivatives of carboxylic acids formed by the reaction of an acid and an alcohol.
Correct Answer: B — Ester
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Q. Which of the following compounds is a haloarene?
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A.
Chloroethane
-
B.
Bromobenzene
-
C.
Iodobutane
-
D.
Fluoropropane
Solution
Bromobenzene contains a benzene ring with a bromine substituent, making it a haloarene.
Correct Answer: B — Bromobenzene
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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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