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Question
Give reason.
A wooden article should be polished.
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Solution
A wooden article should be polished because it protects the wooden article from sunlight and all other external conditions and also reduces the probability of wooden mites damaging the furniture.
RELATED QUESTIONS
Explain the terms Corrosion
Explain why rusting of iron objects is faster in coastal areas than in deserts.
The chemical reaction involved in the corrosion of iron metal is that of:
(a) oxidation as well as displacement
(b) reduction as well as combination
(c) oxidation as well as combination
(d) reduction as well as displacement
Why is an iron grill painted frequently?
Name a common metal which is highly resistant to corrosion.
Mention two uses of the following metals and non-metals
Iron
What is done to prevent corrosion of metals?
Which of the following method is used to prevent the accumulation of greenish layer on brass due to corrosion?
Observe the following diagram and give answers.
- Name this method of prevention of corrosion.
- For prevention of which metal this method is used?
- What is used as anode in this method?
The table shown below gives information about four substances: A, B, C and D.
| SUBSTANCE | MELTING POINT (K) | ELECTRICAL CONDUCTIVITY | |
| SOLID | LIQUID/ AQUEOUS | ||
| A | 295 | Good | Good |
| B | 1210 | Poor | Good |
| C | 1890 | Poor | Good |
| D | 1160 | Poor | Poor |
Identify Ionic compounds from the above given substances.
