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प्रश्न
Name the property of one of the constituents which can be used to separate a mixture of salt and iodine
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उत्तर
Iodine’s property of sublimation can be used to separate the mixture of salt and iodine.
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संबंधित प्रश्न
Match the following
| Column A | Column B | ||
| (a) | Molecules | (i) | Water boils |
| (b) | 100° C | (ii) | Evaporation |
| (c) | 0° C | (iii) | Changes from solid to gas |
| (d) | At all temperatures | (iv) | Matter |
| (e) | Camphor | (v) | Water freezes |
The inter-molecular force is maximum in
What name is given to those elements which are neither good conductors of electricity like copper nor insulators like sulphur ?
Fill in the following blanks with suitable words :
The elements which are sonorous are called ..........................
What are the two types of pure substances? Give one example of each type.
Name a metal which forms amalgams.
What are the three general classes of matter ? Give one example of each type.
What is the name of the clear liquid formed when a solid dissolves in a liquid ?
Which of the following contains less solute at a given temperature and pressure ? Unsaturated solution or Saturated solution.
Classify the following into true solutions and colloidal solutions:
Ink, Salt solution, Starch solution, Blood, Sugar solution
Define solubility of a substance. How does it vary with temperature ?
Which one of the following is not a chemical change ?
When the solid A is added to water, it dissolves with the evolution of a lot of heat and making little explosions to form two products B and C. The properties of products B and C are entirely different from those of solid A as well as water. Moreover, products B and C cannot be reconverted into solid A and water. When another solid D is added to water, it dissolves with the absorption of a little heat to form a product E which cools down. The product E shows the properties of both, solid D as well as water. Moreover, product E can be converted into solid D and water.
(a) What type of change occurs when solid A is dissolved in water ? Why ?
(b) What type of change occurs when solid D is dissolved in water ? Why ?
(c) Name a metal which you think could behave like solid A. Also name the products B and C.
(d) Name the solid D if it is the one which is used in making ordinary dry cells.
(e) Name the process by which D can be recovered from E.
State whether the following statement are true or false :
Salt and water can be recovered from an aqueous salt solution by the process of evaporation.
Name the process by which all the dye can be recovered from black ink.
Which technique is used in a washing machine to squeeze out water from wet clothes while drying ?
The best way to recover sugar from an aqueous sugar solution is :
Name one pair of liquids which can be separated by using a separating funnel.
Justify your answer.
| Figure 1 | Figure 2 | Figure 3 |
 |
 |
 |
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?
State whether true or false. If false, correct the statement.
Oil and water are immiscible with each other.
