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प्रश्न
Fill in the blank
The most abundant element in the earth’s crust is _______.
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उत्तर
The most abundant element in the earth’s crust is oxygen.
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संबंधित प्रश्न
Name: a Liquid Non-metal
Find the atomicity of the Following molecule:
Carbon Monoxide
Indicate whether the following statement is true or false:
Metals can be polished.
Indicate whether the following statement is true or false:
Noble gases are high reactive
Tick (√) the correct alternative from the choice given for the following statement.
The compound used as common salt is
Write the names of elements from the following symbol:
Xe
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 made up of______ kinds of atoms.
______ is the life-giving element is the air.
Reason out
Elements are called semimetals.
