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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
Fill in the blank
Any matter which has a definite _______ but no definite shape is called a _______
Which one is a kind of matter:
Which of the following is a mixture ?
Salt, Air, Water, Alum, Sugar
What are pure substances ? Give two examples of pure substances.
State two physical properties on the basis of which metals can be distinguished from non-metals.
You are given two liquids, one a solution and the other a compound. How will you distinguish the solution from the compound ?
Choose the correct answer.
A 15% alcohol solution means :
What happens when the temperature of a saturated sugar solution is increased ?
What is a suspension ? Give two examples of suspensions.
Which technique is used in a washing machine to squeeze out water from wet clothes while drying ?
Explain how, impure copper sulphate can be purified by crystallisation.
Which of the following cannot be separated from air by the process of fractional distillation ?
Which one of the following scrap metal cannot be separated by magnetic separation ?
If there is a sudden shower, we take shelter under a roof at the roadside. Even though the rain does not fall on us directly, we get wet to some extent. Why ?
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?
Stars including Sun are covered in ______.
The non S I and S I units of some physical quantities are given in column A and column B respectively. Match the units belonging to the same physical quantity:
| (A) | (B) | ||
| (a) | degree celsius | (i) | kilogram |
| (b) | centimetre | (ii) | pascal |
| (c) | gram per centimetre cube | (iii) | metre |
| (d) | bar | (iv) | kelvin |
| (e) | milligram | (v) | kilogram per metre cube |
Gas-solid is ______.
Write a scientific reason.
Lemon sherbat has a sweet, sour and salty taste and it can be poured in a glass.
