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प्रश्न
What type of magnet is fitted on a crane to separate scrap iron objects from a heap of waste materials in factories ?
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उत्तर
Electromagnets are fitted in cranes to separate scrap iron objects from a heap of waste material in factories.
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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 |
Write true or false for each statement. Rewrite the false statement correctly.
Matter cannot exist in different states.
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Which of the following is a mixture ?
Salt, Air, Water, Alum, Sugar
What are pure substances ? Give two examples of pure substances.
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which one has the smallest particles ?
Name the different types of solutions. Give one example of each.
9.72 g of potassium chloride dissolves in 30 g of water at 70°C. Calculate the solubility of potassium chloride at that temperature.
What is a suspension ? Give two examples of suspensions.
One of the following does not show Tyndall effect. This one is :
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.
How will you separate water from mustard oil ?
Which method is better for recovering sugar from sugar solution : evaporation or crystallisation ? Give reason
for your answer.
What's the solution?
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Matter is made up of ______.
Seema visited a Natural Gas Compressing Unit and found that the gas can be liquefied under specific conditions of temperature and pressure. While sharing her experience with friends she got confused. Help her to identify the correct set of conditions
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Give an example of liquid in gas.
Define the term matter.
