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प्रश्न
State whether the statement given below is true or false. If false write the correct statement.
Graphite is a lustrous non-metal which conducts electricity.
पर्याय
True
False
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उत्तर
True.
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संबंधित प्रश्न
Explain how painting of an iron gate prevents it from rusting.
What is anodising? Give its applications.
Fill in the following blank with suitable word:
The process of depositing a thin layer of zinc on iron articles is called .............
Write scientific reasons.
Lemon or tamarind is used for cleaning copper vessels turned greenish.
Which of the following method is used to prevent the accumulation of greenish layer on brass due to corrosion?
Pressure cooker : Anodizing : : Silver plated spoons : _______
Bronze : _______ : : Stainless steel : Fe + Cr + C
State two conditions necessary for rusting of iron.
Copper objects lose their shine and form green coating of ____________.
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.
