Question
As per the CPWD Specifications (2019), the material used for cleaning marble flooring after polishing is ______
The correct answer is
Oxalic Acid
CPWD Marble Flooring Cleaning Post-Polishing
The Central Public Works Department (CPWD) Specifications (2019) provide guidelines for construction and maintenance materials. For cleaning marble flooring specifically after polishing, the designated material is Oxalic Acid.
Reasoning:
- Oxalic Acid: It is a mild acid effective in removing stains, efflorescence (white deposits), and tarnish from marble surfaces without causing significant etching or damage, making it suitable for post-polishing cleaning.
- Caustic Soda: This is a strong alkaline substance. Using it on marble can lead to discoloration or surface damage.
- Bleaching Powder: A strong oxidizing agent, it can damage the polished surface of marble and cause permanent discoloration.
- White Cement: This is a binding material used in construction and grouting, not suitable for cleaning polished marble.
Therefore, as per the CPWD Specifications (2019), Oxalic Acid is the appropriate material for cleaning marble flooring after polishing.
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