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प्रश्न
Classify the following into true solutions and colloidal solutions:
Ink, Salt solution, Starch solution, Blood, Sugar solution
उत्तर
True Solutions: Salt solution and sugar solution.
Colloidal Solutions: Starch solution, ink, and blood
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संबंधित प्रश्न
Intermolecular force of attraction is maximum in ............ less in .......... and the least in .............
Liquids have definite volume but do not have definite shape.
Differentiate between an atom and a molecule.
Fill in the blank
All matter is made up of tiny particles called ______
Fill in the following blanks with suitable words :
An element is made up of only one kind of ........
Iron powder and sulphur powder were mixed together and divided into two parts A and B. When part A was heated strongly over a burner, then a substance C was formed. The part B was, however, not heated at all. When dilute hydrochloric acid was added to substance C, then gas D was evolved and when dilute hydrochloric acid was added to part B then gas E was evolved.
- What type of substance is B ?
- What type of substance is C ?
- Name the gas (i) D, and (ii) E ?
- State one characteristic property of gas D.
- Write one test to identify gas E.
State whether colloidal solutions are homogeneous or heterogeneous.
Fill in the following blank :
Milk is a .................... solution but vinegar is a .................... solution.
How will you test whether a given solution is a colloidal solution ?
One of the following represents the solution of solid in a solid. This one is :
Name the process by which common salt is obtained from sea-water.
Which technique can be used to detect and identify traces of poison present in the stomach wash of a person ?
How will you separate camphor, common salt and iron nails from their mixture ?
Pure copper sulphate can be obtained from an impure sample by the process of :
Justify your answer.
| Figure 1 | Figure 2 | Figure 3 |
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 |
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The arrangement of particles in three different phases of matter is shown above.
- Which state is represented by Fig. 1?
- In which state will the inter-particle attraction be maximum?
- Which one of them cannot be contained in an open vessel?
- Which one can take the shape of its container?
Solids possess very high kinetic energy.
Higher the temperature, the higher the kinetic energy of particles.
The phenomenon of Evaporation takes place at the ______ of a liquid.
Gas-solid is ______.
Define the term matter.
