The Chemistry (School & UG) category covers the fundamental to advanced concepts of Chemistry , structured to support Class 11–12 students, competitive exam aspirants, and undergraduate learners . The content emphasizes conceptual clarity, problem-solving skills, and strong alignment with NCERT and university syllabi .
In this category, you will study:
Physical Chemistry – atomic structure, thermodynamics, chemical kinetics, equilibrium, electrochemistry, and solutions
Organic Chemistry – basic principles, reaction mechanisms, hydrocarbons, functional groups, biomolecules, and polymers
Inorganic Chemistry – periodic trends, chemical bonding, coordination compounds, metallurgy, and s-, p-, d-, and f-block elements
Numerical problem-solving – formula-based calculations, mole concept, and graph-based questions
Reaction mechanisms and derivations with step-by-step explanations
Comparisons, trends, and exceptions important for exams
NCERT-based theory , supported by diagrams, tables, MCQs, assertion–reason questions, numericals, and PYQs
The content is designed to build strong foundations , improve analytical and quantitative skills , and prepare students for school examinations, competitive exams, and undergraduate assessments .
Develop a clear, logical, and application-oriented understanding of Chemistry to excel academically and confidently tackle problem-based and conceptual questions at both school and UG levels .
Q. What is the ionization energy trend in the periodic table?
A.
Increases down a group
B.
Decreases across a period
C.
Increases across a period
D.
Decreases down a group
Show solution
Solution
Ionization energy generally increases across a period due to increasing nuclear charge.
Correct Answer:
C
— Increases across a period
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Q. What is the IUPAC name for CH3-CH(OH)-CH2-COOH?
A.
2-Hydroxybutanoic acid
B.
3-Hydroxybutanoic acid
C.
Butanoic acid
D.
Butanol
Show solution
Solution
The compound has a hydroxyl group on the second carbon and a carboxylic acid group, making it 2-hydroxybutanoic acid.
Correct Answer:
A
— 2-Hydroxybutanoic acid
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Q. What is the IUPAC name for the compound CH3-CH(OH)-CH2-COOH?
A.
3-Hydroxybutanoic acid
B.
2-Hydroxybutanoic acid
C.
Butanoic acid
D.
Butanol
Show solution
Solution
The compound has a hydroxyl group on the second carbon of a four-carbon chain with a carboxylic acid, making it 2-Hydroxybutanoic acid.
Correct Answer:
B
— 2-Hydroxybutanoic acid
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Q. What is the IUPAC name for the compound CH3-CH2-CH(CH3)-C(=O)OH?
A.
3-Methylbutanoic acid
B.
2-Methylbutanoic acid
C.
4-Methylbutanoic acid
D.
Pentanoic acid
Show solution
Solution
The longest chain has four carbons with a carboxylic acid group, making it 2-Methylbutanoic acid.
Correct Answer:
B
— 2-Methylbutanoic acid
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Q. What is the IUPAC name for the compound CH3-CH2-CH(CH3)-CH2-Br?
A.
1-bromo-3-methylbutane
B.
2-bromo-3-methylbutane
C.
3-bromo-2-methylbutane
D.
1-bromo-2-methylbutane
Show solution
Solution
The longest carbon chain has four carbons, and the bromine is on the first carbon when numbering from the end closest to the substituent.
Correct Answer:
A
— 1-bromo-3-methylbutane
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Q. What is the IUPAC name for the compound CH3-CH2-CH(CH3)-CH2-CH3?
A.
2-pentene
B.
3-pentanol
C.
3-methylpentane
D.
2-methylpentane
Show solution
Solution
The longest carbon chain has five carbons, and the methyl group is on the third carbon, making the IUPAC name 3-methylpentane.
Correct Answer:
C
— 3-methylpentane
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Q. What is the IUPAC name for the compound CH3-CH2-CH(CH3)-C≡C-CH2-CH3?
A.
3-heptyne
B.
2-heptyne
C.
4-heptyne
D.
1-heptyne
Show solution
Solution
The longest carbon chain containing the triple bond has 7 carbons, and the triple bond starts at carbon 3, making it 3-heptyne.
Correct Answer:
A
— 3-heptyne
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Q. What is the IUPAC name for the compound CH3-CH2-CH(CH3)-OH?
A.
2-Propanol
B.
1-Butanol
C.
3-Butanol
D.
2-Butanol
Show solution
Solution
The longest carbon chain has four carbons, and the hydroxyl group is on the second carbon, making it 2-Butanol.
Correct Answer:
D
— 2-Butanol
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Q. What is the IUPAC name for the compound CH3-CH2-CH2-CH2-NH2?
A.
Butanamine
B.
Pentanamine
C.
Hexanamine
D.
Propylamine
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Solution
The compound has four carbon atoms and an amine functional group, making it butanamine.
Correct Answer:
A
— Butanamine
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Q. What is the IUPAC name for the compound CH3-CH2-CH2-CH2-OH?
A.
Butanol
B.
Pentanol
C.
Hexanol
D.
Propyl alcohol
Show solution
Solution
The compound has four carbon atoms and a hydroxyl group, making it butanol.
Correct Answer:
A
— Butanol
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Q. What is the IUPAC name for the compound CH3-CH2-CH2-CH=CH2?
A.
1-pentene
B.
2-pentene
C.
3-pentene
D.
1-butene
Show solution
Solution
The longest carbon chain containing the double bond has 5 carbons, and the double bond starts at the first carbon, making it 1-pentene.
Correct Answer:
A
— 1-pentene
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Q. What is the IUPAC name for the compound CH3-CH2-CH2-CHO?
A.
Butanal
B.
Pentanal
C.
Propionaldehyde
D.
Butyric aldehyde
Show solution
Solution
The compound is butanal, as it has four carbon atoms and an aldehyde functional group.
Correct Answer:
A
— Butanal
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Q. What is the IUPAC name for the compound CH3-CH2-COOH?
A.
Propanoic acid
B.
Butanoic acid
C.
Acetic acid
D.
Methanoic acid
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Solution
The compound has three carbon atoms and a carboxylic acid functional group, making it propanoic acid.
Correct Answer:
A
— Propanoic acid
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Q. What is the IUPAC name for the compound CH3-CH2-O-CH2-CH3?
A.
Ethyl methyl ether
B.
Diethyl ether
C.
Ethoxyethane
D.
Methyl ethyl ether
Show solution
Solution
The correct IUPAC name for CH3-CH2-O-CH2-CH3 is ethoxyethane.
Correct Answer:
C
— Ethoxyethane
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Q. What is the IUPAC name for the compound CH3-CH=CH-CH2-CH3?
A.
1-Pentene
B.
2-Pentene
C.
3-Pentene
D.
Butene
Show solution
Solution
The compound is named 2-pentene because the double bond is located between the second and third carbon atoms.
Correct Answer:
B
— 2-Pentene
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Q. What is the IUPAC name for the compound CH3OCH2CH3?
A.
Ethyl methyl ether
B.
Methyl ethyl ether
C.
Dimethyl ether
D.
Ethoxyethane
Show solution
Solution
The compound CH3OCH2CH3 is commonly known as ethyl methyl ether, indicating the two different alkyl groups attached to the ether oxygen.
Correct Answer:
A
— Ethyl methyl ether
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Q. What is the IUPAC name for the compound CH₃-CH₂-CH(CH₃)-CH₂OH?
A.
2-Butanol
B.
3-Pentanol
C.
1-Butanol
D.
2-Pentanol
Show solution
Solution
The IUPAC name for CH₃-CH₂-CH(CH₃)-CH₂OH is 2-Pentanol, as the longest chain has five carbons and the hydroxyl group is on the second carbon.
Correct Answer:
D
— 2-Pentanol
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Q. What is the IUPAC name for the compound with the formula C2H4Cl2?
A.
1,1-dichloroethane
B.
1,2-dichloroethane
C.
2,2-dichloroethane
D.
Chloroethane
Show solution
Solution
The compound C2H4Cl2 has two chlorine atoms on the second carbon of the ethane chain, making its IUPAC name 1,2-dichloroethane.
Correct Answer:
B
— 1,2-dichloroethane
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Q. What is the IUPAC name for the compound with the formula C3H4?
A.
Propene
B.
Propyne
C.
Cyclopropane
D.
Propane
Show solution
Solution
C3H4 is an alkyne, specifically propyne, as it contains a triple bond.
Correct Answer:
B
— Propyne
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Q. What is the IUPAC name for the compound with the formula C3H6O?
A.
Propanal
B.
Propan-2-one
C.
Cyclopropanol
D.
Propene
Show solution
Solution
The compound C3H6O is propan-2-one, which is a ketone with the carbonyl group on the second carbon.
Correct Answer:
B
— Propan-2-one
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Q. What is the IUPAC name for the compound with the formula C4H10?
A.
Butane
B.
Butene
C.
Butyne
D.
Cyclobutane
Show solution
Solution
C4H10 is an alkane and is named butane, as it contains only single bonds.
Correct Answer:
A
— Butane
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Q. What is the IUPAC name for the compound with the formula C4H8 that has a double bond and a methyl group on the second carbon?
A.
2-methylbut-1-ene
B.
3-methylbut-1-ene
C.
2-methylbut-2-ene
D.
but-2-ene
Show solution
Solution
The correct IUPAC name is 2-methylbut-1-ene, as the double bond is between the first and second carbon.
Correct Answer:
A
— 2-methylbut-1-ene
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Q. What is the IUPAC name for the compound with the formula C4H8O2 that contains an ester functional group?
A.
Butanoic acid
B.
Ethyl acetate
C.
Butyl acetate
D.
Propanoic acid
Show solution
Solution
The compound is ethyl acetate, which is an ester derived from ethanol and acetic acid.
Correct Answer:
B
— Ethyl acetate
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Q. What is the IUPAC name for the compound with the formula C4H8O2 that has a double bond and a carboxylic acid functional group?
A.
Butenoic acid
B.
Butanoic acid
C.
2-Butenoic acid
D.
Butyric acid
Show solution
Solution
The compound is 2-Butenoic acid, as it has a double bond and a carboxylic acid functional group.
Correct Answer:
C
— 2-Butenoic acid
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Q. What is the IUPAC name for the compound with the formula C4H8O2 that has a double bond and a carboxylic acid group?
A.
Butenoic acid
B.
Butanoic acid
C.
2-Butenoic acid
D.
3-Butenoic acid
Show solution
Solution
The compound has a double bond and a carboxylic acid group, making it Butenoic acid.
Correct Answer:
A
— Butenoic acid
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Q. What is the IUPAC name for the compound with the formula C4H9Br?
A.
1-bromobutane
B.
2-bromobutane
C.
1-bromopropane
D.
2-bromopropane
Show solution
Solution
The compound C4H9Br corresponds to 1-bromobutane, as it has a straight-chain structure with the bromine on the first carbon.
Correct Answer:
A
— 1-bromobutane
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Q. What is the IUPAC name for the compound with the formula C5H10?
A.
Pentane
B.
Cyclopentane
C.
2-Pentene
D.
1-Pentene
Show solution
Solution
C5H10 is an alkene and can be named as pentene, but without specifying the position, it is simply pentane.
Correct Answer:
A
— Pentane
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Q. What is the IUPAC name for the compound with the formula C5H10O that contains a ketone functional group?
A.
2-Pentanone
B.
3-Pentanone
C.
1-Pentanone
D.
Pentanal
Show solution
Solution
The compound is a ketone with five carbon atoms. The longest carbon chain is pentane, and the ketone group is on the second carbon, making the IUPAC name 2-Pentanone.
Correct Answer:
A
— 2-Pentanone
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Q. What is the IUPAC name for the compound with the formula C5H10O that has a carbonyl group on the second carbon?
A.
2-pentanone
B.
3-pentanone
C.
2-pentanol
D.
Pentanal
Show solution
Solution
The compound is a ketone with the carbonyl group on the second carbon, making it 2-pentanone.
Correct Answer:
A
— 2-pentanone
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Q. What is the IUPAC name for the compound with the formula C5H10O2 that contains an ester functional group?
A.
Pentanoic acid
B.
Ethyl butanoate
C.
Butyl acetate
D.
2-Pentenoic acid
Show solution
Solution
The compound C5H10O2 is an ester, and the correct IUPAC name is ethyl butanoate, derived from butanoic acid and ethanol.
Correct Answer:
B
— Ethyl butanoate
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