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Match each structure in List I with its characteristic in List II.

List I

A. Bag store

B. Metal silo

C. Concrete silo

D. Hermetic structure

List II

1. Cheap and quick to erect but thermally responsive

2. Easy stock identification but costly handling

3. Depends absolutely on an airtight seal

4. Thermal mass evens temperature swings

Select the correct match.

  • A.A-2, B-4, C-1, D-3
  • B.A-3, B-1, C-4, D-2
  • C.A-2, B-1, C-4, D-3
  • D.A-1, B-2, C-4, D-3

Answer: C

Correct answer: A-2, B-1, C-4, D-3

Each structure is matched to its defining characteristic. A bag store (A) offers easy stock identification but costly handling (2), since every sack is moved individually. A metal silo (B) is cheap and quick to erect but thermally responsive (1), following ambient swings closely.

A concrete silo (C) has the thermal mass to even those swings out (4), which is why it suffers less moisture migration. A hermetic structure (D) depends absolutely on an airtight seal (3), because its whole action rests on the atmosphere the contents create.

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