Civil Engineering - UPSC Civil Service Exam Questions - Discussion

Discussion Forum : UPSC Civil Service Exam Questions - Section 27 (Q.No. 19)

UPSC Civil Service Exam Questions

19.

What is efflorescence ?

Formation of white patches on the brick surface due to insoluble salts in the brick clay

Swelling of brick due to presence of carbonaceous matter and gas

Deformation of brick due to exposure to rain

Impurities in the brick clay which show after burning

Answer: Option

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