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. Which functional group is present in alkenes?
A.
Hydroxyl
B.
Carbonyl
C.
Alkene
D.
Alkyne
Show solution
Solution
Alkenes are characterized by the presence of a carbon-carbon double bond, which is the alkene functional group.
Correct Answer:
C
— Alkene
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Q. Which functional group is present in alkynes?
A.
Double bond
B.
Triple bond
C.
Alcohol
D.
Ester
Show solution
Solution
Alkynes are characterized by the presence of a triple bond between carbon atoms.
Correct Answer:
B
— Triple bond
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Q. Which functional group is present in all alcohols?
A.
Aldehyde
B.
Ketone
C.
Hydroxyl
D.
Carboxylic acid
Show solution
Solution
All alcohols contain a hydroxyl group (-OH) as their functional group.
Correct Answer:
C
— Hydroxyl
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Q. Which functional group is present in all amino acids?
A.
Carboxylic acid
B.
Alcohol
C.
Aldehyde
D.
Ketone
Show solution
Solution
All amino acids contain a carboxylic acid group (-COOH) along with an amino group (-NH2).
Correct Answer:
A
— Carboxylic acid
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Q. Which functional group is present in amines?
A.
-OH
B.
-NH2
C.
-COOH
D.
-C=O
Show solution
Solution
Amines contain an amino group (-NH2) as their functional group.
Correct Answer:
B
— -NH2
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Q. Which functional group is present in amino acids?
A.
Carboxyl group
B.
Hydroxyl group
C.
Carbonyl group
D.
Aldehyde group
Show solution
Solution
Amino acids contain both an amino group and a carboxyl group.
Correct Answer:
A
— Carboxyl group
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Q. Which functional group is present in both amino acids and proteins?
A.
Carboxyl group
B.
Hydroxyl group
C.
Carbonyl group
D.
Aldehyde group
Show solution
Solution
Amino acids contain both an amino group and a carboxyl group, which are also present in proteins.
Correct Answer:
A
— Carboxyl group
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Q. Which functional group is present in carboxylic acids?
A.
Hydroxyl
B.
Carbonyl
C.
Carboxyl
D.
Amino
Show solution
Solution
Carboxylic acids contain the carboxyl functional group (-COOH), which is a combination of a carbonyl and a hydroxyl group.
Correct Answer:
C
— Carboxyl
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Q. Which functional group is present in haloalkanes?
A.
Alcohol
B.
Aldehyde
C.
Halogen
D.
Carboxylic acid
Show solution
Solution
Haloalkanes contain a halogen functional group, which is responsible for their reactivity and properties.
Correct Answer:
C
— Halogen
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Q. Which functional group is present in phenols?
A.
Aldehyde
B.
Ketone
C.
Hydroxyl
D.
Carboxyl
Show solution
Solution
Phenols contain a hydroxyl group (-OH) directly attached to an aromatic ring.
Correct Answer:
C
— Hydroxyl
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Q. Which functional group is present in the compound 4-hydroxy-3-methoxybenzaldehyde?
A.
Aldehyde
B.
Ketone
C.
Alcohol
D.
Ether
Show solution
Solution
The compound contains a benzaldehyde functional group (aldehyde) along with hydroxy and methoxy substituents.
Correct Answer:
A
— Aldehyde
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Q. Which functional group is present in the compound CH3-CH2-COOH?
A.
Alcohol
B.
Aldehyde
C.
Carboxylic acid
D.
Ketone
Show solution
Solution
The compound CH3-CH2-COOH contains a carboxylic acid functional group, characterized by the -COOH group.
Correct Answer:
C
— Carboxylic acid
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Q. Which functional group is present in the compound CH3-CO-CH2-CH3?
A.
Alcohol
B.
Ketone
C.
Aldehyde
D.
Carboxylic acid
Show solution
Solution
The compound contains a carbonyl group (C=O) between two carbon atoms, classifying it as a ketone.
Correct Answer:
B
— Ketone
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Q. Which functional group is present in the compound CH3-CO-CH2-COOH?
A.
Alcohol
B.
Aldehyde
C.
Ketone
D.
Carboxylic acid
Show solution
Solution
The compound contains a carboxylic acid functional group (-COOH) at the end of the carbon chain.
Correct Answer:
D
— Carboxylic acid
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Q. Which functional group is present in the compound CH3-CO-CH3?
A.
Ketone
B.
Aldehyde
C.
Alcohol
D.
Ester
Show solution
Solution
The compound contains a carbonyl group (C=O) between two carbon atoms, which is characteristic of ketones.
Correct Answer:
A
— Ketone
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Q. Which functional group is present in the compound CH3-COOH?
A.
Alcohol
B.
Aldehyde
C.
Carboxylic acid
D.
Ester
Show solution
Solution
The compound CH3-COOH contains a carboxylic acid functional group, characterized by the -COOH group.
Correct Answer:
C
— Carboxylic acid
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Q. Which functional group is present in the compound CH3CH2COOH?
A.
Alcohol
B.
Aldehyde
C.
Carboxylic acid
D.
Ester
Show solution
Solution
The compound CH3CH2COOH contains a carboxylic acid functional group, characterized by the -COOH group.
Correct Answer:
C
— Carboxylic acid
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Q. Which functional group is responsible for the chirality in amino acids?
A.
Carboxyl group
B.
Amino group
C.
Hydroxyl group
D.
Carbonyl group
Show solution
Solution
The amino group (-NH2) attached to the alpha carbon contributes to the chirality of amino acids.
Correct Answer:
B
— Amino group
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Q. Which gas law can be used to calculate the final volume of a gas when both pressure and temperature change?
A.
Ideal Gas Law
B.
Combined Gas Law
C.
Graham's Law
D.
Dalton's Law
Show solution
Solution
The Combined Gas Law (P1V1/T1 = P2V2/T2) allows for calculations involving changes in pressure, volume, and temperature.
Correct Answer:
B
— Combined Gas Law
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Q. Which gas law combines Boyle's, Charles's, and Avogadro's laws into one equation?
A.
Ideal Gas Law
B.
Dalton's Law
C.
Graham's Law
D.
Henry's Law
Show solution
Solution
The Ideal Gas Law (PV = nRT) combines Boyle's, Charles's, and Avogadro's laws.
Correct Answer:
A
— Ideal Gas Law
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Q. Which gas law combines Boyle's, Charles's, and Avogadro's laws?
A.
Dalton's Law
B.
Ideal Gas Law
C.
Graham's Law
D.
Henry's Law
Show solution
Solution
The Ideal Gas Law (PV = nRT) combines Boyle's, Charles's, and Avogadro's laws into one equation.
Correct Answer:
B
— Ideal Gas Law
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Q. Which gas law describes the direct relationship between volume and temperature at constant pressure?
A.
Boyle's Law
B.
Charles's Law
C.
Graham's Law
D.
Dalton's Law
Show solution
Solution
Charles's Law states that the volume of a gas is directly proportional to its absolute temperature at constant pressure (V1/T1 = V2/T2).
Correct Answer:
B
— Charles's Law
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Q. Which gas law describes the relationship between pressure and temperature at constant volume?
A.
Boyle's Law
B.
Charles's Law
C.
Avogadro's Law
D.
Gay-Lussac's Law
Show solution
Solution
Gay-Lussac's Law describes the relationship between pressure and temperature at constant volume, stating that pressure is directly proportional to temperature.
Correct Answer:
D
— Gay-Lussac's Law
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Q. Which gas law describes the relationship between the volume and temperature of a gas at constant pressure?
A.
Boyle's Law
B.
Charles's Law
C.
Avogadro's Law
D.
Graham's Law
Show solution
Solution
Charles's Law states that the volume of a gas is directly proportional to its absolute temperature at constant pressure.
Correct Answer:
B
— Charles's Law
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Q. Which gas law relates pressure and volume at constant temperature?
A.
Charles's Law
B.
Avogadro's Law
C.
Boyle's Law
D.
Graham's Law
Show solution
Solution
Boyle's Law states that the pressure of a gas is inversely proportional to its volume at constant temperature (PV = constant).
Correct Answer:
C
— Boyle's Law
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Q. Which indicator is commonly used for a strong acid-strong base titration?
A.
Phenolphthalein
B.
Methyl orange
C.
Bromothymol blue
D.
Litmus
Show solution
Solution
Phenolphthalein is commonly used as an indicator in strong acid-strong base titrations because it changes color at a pH around 8.2 to 10.
Correct Answer:
A
— Phenolphthalein
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Q. Which indicator is commonly used in a strong acid-strong base titration?
A.
Phenolphthalein
B.
Methyl orange
C.
Bromothymol blue
D.
Litmus
Show solution
Solution
Phenolphthalein is commonly used as an indicator in strong acid-strong base titrations because it changes color around pH 8.2 to 10.
Correct Answer:
A
— Phenolphthalein
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Q. Which indicator is commonly used in a titration involving hydrochloric acid and sodium hydroxide?
A.
Phenolphthalein
B.
Methyl orange
C.
Bromothymol blue
D.
Litmus
Show solution
Solution
Phenolphthalein is commonly used as an indicator in strong acid-strong base titrations because it changes color around pH 7-10.
Correct Answer:
A
— Phenolphthalein
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Q. Which indicator is commonly used in acid-base titrations?
A.
Phenolphthalein
B.
Bromothymol blue
C.
Methyl orange
D.
All of the above
Show solution
Solution
Phenolphthalein, Bromothymol blue, and Methyl orange are all indicators that can be used in acid-base titrations, depending on the pH range of the titration.
Correct Answer:
D
— All of the above
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Q. Which indicator is commonly used in strong acid-strong base titrations?
A.
Phenolphthalein
B.
Methyl orange
C.
Bromothymol blue
D.
Litmus
Show solution
Solution
Phenolphthalein is commonly used in strong acid-strong base titrations because it changes color at a pH around 8.2 to 10.
Correct Answer:
A
— Phenolphthalein
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