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Answer:
prevent for rusting
are
- painting
- galvanizing
- Store in dry place
- makin alloy (steel = Fe + C )
Answer:
Q.4 (Answer)
In a physical change the appearance or form of the matter changes but the kind of matter in the substance does not. However in a chemical change, the kind of matter changes and at least one new substance with new properties is formed. The distinction between physical and chemical change is not clear cut.In a physical change the appearance or form of the matter changes but the kind of matter in the substance does not. However in a chemical change, the kind of matter changes and at least one new substance with new properties is formed. The distinction between physical and chemical change is not clear cut.
Q.5 (Answer)
Burning of paper is an chemical change and irreversible as it forms a new substance and we cannot reverse it but some how cutting of paper is a physical change as there is no new substance formed
Q.6 (Answer)
Wax of the candle is made of carbon and hydrogen which reacts with oxygen on burning and changes into carbon dioxide gas and water which escapes into the air. This is a chemical change. As a result, candle melts and reduces in size. This is a physical change
Q.1 (Answer)
Galvanizing. Galvanizing is a method of rust prevention. ...
Corten or Weathering Steel. ...
Stainless Steel. ...
Proper Pre-Design. ...
Bluing. ...
Regular maintenance. ...
FOZZ. ...
Powder coating.