🧪 Organic Chemistry – Basic Principles and Techniques
Test Name: Nemade Classes
Class: 11
Chapter: Basic Concepts of Organic Chemistry
Total Questions: 30
Total Marks: 30
Instructions:
All questions carry 1 mark each.
Choose the correct option.
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🔹 Section A: Carbon and Its Properties
Q1. What is catenation?
A. Ability to donate electrons
B. Ability of an atom to form chains with other atoms of the same element
C. Formation of double bonds
D. Formation of salts
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Q2. Which element shows the maximum tendency for catenation?
A. Silicon
B. Sulfur
C. Carbon
D. Phosphorus
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Q3. The tetravalency of carbon means it can form:
A. One bond
B. Two bonds
C. Four bonds
D. Six bonds
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Q4. Which hybridization allows carbon to form four single bonds?
A. sp
B. sp²
C. sp³
D. dsp³
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Q5. Carbon forms a large number of compounds due to:
A. Electronegativity
B. Low atomic number
C. Catenation and tetravalency
D. Large atomic size
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🔹 Section B: Classification of Organic Compounds
Q6. Which of the following is an alicyclic compound?
A. Cyclohexane
B. Ethene
C. Benzene
D. Ethanoic acid
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Q7. Aromatic compounds are those that contain:
A. Double bonds
B. Carboxylic groups
C. Benzene rings or similar structures
D. Hydroxyl groups
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Q8. Which one is an example of an open-chain compound?
A. Cyclopentane
B. Acetone
C. Benzene
D. Naphthalene
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Q9. Which of the following is a heterocyclic compound?
A. Pyridine
B. Cyclohexane
C. Hexane
D. Toluene
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Q10. A compound that contains both carbon and hydrogen is classified as:
A. Inorganic compound
B. Hydrocarbon
C. Carbohydrate
D. Salt
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🔹 Section C: Functional Group Identification
Q11. The functional group in CH3COOH is:
A. –OH
B. –CHO
C. –COOH
D. –CO–
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Q12. CH3CH2OH is an example of:
A. Aldehyde
B. Alcohol
C. Ketone
D. Ester
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Q13. CH3COCH3 has which functional group?
A. Alcohol
B. Acid
C. Ketone
D. Amine
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Q14. –CHO is the functional group of:
A. Aldehyde
B. Alcohol
C. Acid
D. Ketone
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Q15. Which of the following is a carboxylic acid?
A. CH3CHO
B. CH3CH2OH
C. CH3COOH
D. CH3COCH3
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Q16. CH3NH2 belongs to which class?
A. Aldehyde
B. Ketone
C. Amine
D. Alcohol
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Q17. CH3–CO–O–CH3 is:
A. Ester
B. Acid
C. Ether
D. Amide
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Q18. A compound with –O– linkage between two carbon atoms is called:
A. Ester
B. Ether
C. Amide
D. Acid
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Q19. R–CO–R’ is the general structure of:
A. Aldehyde
B. Acid
C. Ketone
D. Alcohol
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Q20. The functional group –NO2 is:
A. Nitrate
B. Nitrite
C. Nitro
D. Amino
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🔹 Section D: Mixed Conceptual Questions
Q21. The presence of a double or triple bond is indicated by:
A. Functional group
B. Saturation
C. Unsaturation
D. Chain structure
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Q22. In IUPAC naming, the priority is first given to:
A. Chain length
B. Branch
C. Functional group
D. Position of carbon
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Q23. Which compound is saturated?
A. Ethene
B. Ethyne
C. Ethane
D. Benzene
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Q24. The smallest alkane is:
A. Methane
B. Ethane
C. Propane
D. Butane
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Q25. Which one of the following is NOT an organic compound?
A. Methane
B. Glucose
C. NaCl
D. Ethanol
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Q26. Functional isomerism is shown by:
A. CH3COOH and HCOOCH3
B. CH3CH2OH and CH3OCH3
C. C2H6 and C3H8
D. C6H6 and C6H12
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Q27. The functional group in CH3–CH2–Cl is:
A. Alcohol
B. Alkyl halide
C. Ether
D. Amine
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Q28. Ethene contains:
A. Triple bond
B. Single bond only
C. Double bond
D. Aromatic ring
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Q29. Which group is present in CH3CONH2?
A. Amide
B. Ketone
C. Ester
D. Alcohol
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Q30. The general formula of an ether is:
A. R–OH
B. R–COOH
C. R–O–R’
D. R–NH2