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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
What is the difference between a pure substance and a mixture ?
Differentiate between:
Homogenous and heterogenous substances
Give the symbols of: Carbon, calcium, copper, chlorine, cobalt, argon.
Classify substances into pure and impure substances in the form of a chart or tabulation.
Complete the statement given below by filling in the blank with the correct word.
The basic unit of an element is an __________.
Write the names of elements from the following symbol:
Pt
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 |
Elements are the______ form of pure substances.
Matter is its simplest form is called ______.
Non-metals are usually poor conductors of heat and electricity. They are non-lustrous, non-sonorous, non-malleable and are coloured.
Name a non-metal which is required for combustion.
