Q1.Consider the following statements:
- Every activity in the quaternary sector is necessarily a part of the tertiary sector.
- The quinary sector is distinguished from the tertiary sector primarily on the basis of hierarchy of decision-making.
- Electricity generation is classified under the secondary sector because it involves transformation of inputs.
Which of the statements given above is/are correct?
A) 1 and 2 only
B) 2 and 3 only
C) 3 only
D) 1, 2 and 3
Q1. (B)
Explanation:
- Statement 1 – Incorrect.
Although some frameworks treat quaternary as a subset of services, in advanced sectoral classification it is analytically separated due to its knowledge-creation focus (R&D, innovation). Hence, it is not necessarily part of general tertiary services. - Statement 2 – Correct.
Quinary sector is distinguished by strategic decision-making and specialised leadership roles (policy, judiciary, corporate boards), not merely service provision. - Statement 3 – Correct.
Electricity generation involves conversion of primary energy into usable power, hence classified under secondary (value addition through transformation).
Q2.
Assertion (A): Disguised unemployment is structurally associated with the primary sector in developing economies.
Reason (R): Marginal productivity of additional labour in agriculture may approach zero.
A) Both A and R are correct and R is the correct explanation of A
B) Both A and R are correct but R is not the correct explanation
C) A is correct but R is incorrect
D) A is incorrect but R is correct
Q2. (A)
Explanation:
- In traditional agriculture, surplus labour does not increase output proportionately.
- When marginal productivity ≈ 0, removal of some workers does not reduce output → classic case of disguised unemployment.
- Hence, Reason correctly explains the Assertion.
Q3. Match List I with List II:
| List I | List II |
| A. Data analytics firm | 1. Secondary |
| B. Steel manufacturing | 2. Quaternary |
| C. Supreme Court | 3. Primary |
| D. Iron ore extraction | 4. Quinary |
Select the correct answer:
A) A-2, B-1, C-4, D-3
B) A-1, B-2, C-4, D-3
C) A-2, B-3, C-4, D-1
D) A-4, B-1, C-2, D-3
Q3. (A)
Explanation:
- Data analytics → Quaternary (knowledge-based activity).
- Steel manufacturing → Secondary (value addition).
- Supreme Court → Quinary (highest-level decision-making).
- Iron ore extraction → Primary (resource extraction).
Q4.A biotechnology company develops patented seeds using advanced genetic research. The activity primarily belongs to:
A) Primary sector
B) Secondary sector
C) Tertiary sector
D) Quaternary sector
Q4. (D)
Explanation:
- Core activity = knowledge creation + innovation + scientific R&D.
- Even though output supports agriculture, classification depends on nature of activity, not end use.
- Hence, Quaternary sector.
Q5.Consider the following activities:
- Cloud computing infrastructure services
- Construction of metro rail
- Artificial intelligence algorithm design
- Wholesale grain trade
How many of the above belong to the tertiary sector?
A) Only one
B) Only two
C) Only three
D) All four
Q5. (B)
Explanation:
- 1 → Tertiary (service provision).
- 2 → Secondary (construction = value addition).
- 3 → Quaternary (knowledge/innovation).
- 4 → Tertiary (commercial service).
Thus, 1 and 4 → Two.
