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प्रश्न
Give a reason for the following statement :
The filter paper made into a cone & placed in a funnel for filtering out the solid particles in a solid-liquid mixture should be moistened before placing it.
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उत्तर
Moistening the filter paper cone sticks to the walls of the funnel and also makes filtration convenient.
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संबंधित प्रश्न
Give two applications of chromatography.
Answer the following question:
When iron is mixed with sulphur at room temperature, it does not form a compound. Why?
Indicate whether the following statement is true or false:
Molecules combine to form atoms
Classify substances into pure and impure substances in the form of a chart or tabulation.
Select the correct answer from the choice given below.
A group of atoms of elements
Write the names of elements from the following symbol:
Zn
Write the names of elements from the following symbol:
Ti
Select the correct answer from A, B, C, D & E for the statement given below :
A diatomic molecule.
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 |
What is the Latin name of Sodium?
