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प्रश्न
An element is sonorous and highly ductile. Under which category would you classify this element? What other characteristics do you expect the element to possess?
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उत्तर
It is metal. The element is expected to be a lustrous, malleable and good conductor of heat and electricity.
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संबंधित प्रश्न
Fill in the blank
Use of a ................. to separate the components of a mixture of solids is based on the difference in the size of the components
What is the difference between a pure substance and a mixture ?
Give two examples of Noble gases.
Give three differences between metals and non-metals.
Define: Atom
Fill in the blank
The most abundant element in the atmosphere is _______.
Elements are classified into – Metals – Non-metals – Metalloids – Noble gases. State which of A, B, C, D is a –
1. Metallic element
2. Non-metallic element
3. Metalloid
4. Noble gas.
A: Is non-malleable, non-ductile & a poor conductor of electricity ___________
B: Has lustre, is malleable and ductile & a good conductor of heat ___________
C: Is unreactive and inert and present in traces in the air _________
D: Shows properties of both metals and non-metals ___________
Match the separation of components in List I with the most appropriate process in List II.
| List I | List II |
| 1. Naphthalene from naphthalene & sodium chloride. | A: Separating funnel |
| 2. Cream from milk. | B: Sublimation |
| 3. Kerosene oil from kerosene oil & water. | C: Boiling |
| 4. Lead nitrate from an aqueous solution of lead nitrate. | D: Centrifugation |
| 5. Ammonia from an aqueous solution of ammonia. | E: Distillation |
Select the correct answer from the choice given below to complete the sentence :
Compounds are ____________ in nature.
Classify the following as elements and compounds.
Water, Common salt, Sugar, Carbon dioxide, Iodine and Lithium
