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Classification of Solids Multiple Questions and Answers.
| 1. | Which one of the following is the property of an ionic compound? | ||
| A. | High melting and boiling points | ||
| B. | Low melting and boiling points | ||
| C. | Weak inter-atomic forces | ||
| D. | Non conductors of electricity | ||
| 2. | When do ionic compounds conduct electricity? | ||
| A. | In gaseous state | ||
| B. | In solid state | ||
| C. | When dissolved in water | ||
| D. | They never conduct | ||
| 3. | Which of the following covalent compounds conduct electricity? | ||
| A. | Silica | ||
| B. | Graphite | ||
| C. | Diamond | ||
| D. | Hydrogen chloride | ||
| 4. | Which of the following is a crystalline solid? | ||
| A. | Anisotropic substances | ||
| B. | Isotropic substances | ||
| C. | Supercooled liquids | ||
| D. | Amorphous solids | ||
| 5. | Why are the glasses of building milky? | ||
| A. | Because of unwanted deposits | ||
| B. | Because it becomes old | ||
| C. | Because it is brittle | ||
| D. | Because it changes in properties | ||
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