Chemistry
Grade-10
Easy

Question

Best chemical to clean metals & brick:

  1. HCl
  2. straight H subscript 2 SO subscript 4
  3. HNO subscript 3
  4. straight H subscript 2 PO subscript 4

hintHint:

Metal oxide is basic in nature.

The correct answer is: HCl


    • Metals for an oxide layer over it, which is basic in nature.
    • For cleaning basic oxides acids would work the best.
    • Best chemical to clean metals & brick is HCl.

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