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प्रश्न
Name the property which enables metals to be drawn into wires.
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उत्तर
Ductility is the property of metals that enables them to be drawn into wires.
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संबंधित प्रश्न
Fill in the blank :
The state of matter with definite volume and definite shape is called______
Fill in the blank
All matter is made up of tiny particles called ______
Fill in the blank
Liquids have a definite ______
Which of the following statements are true for pure substances ?
- pure substances contain only one kind of particles
- pure substances may be compounds or mixtures
- pure substances have the same composition throughout
- pure substances can be exemplified by all elements other than nickel
There is a large group of materials P which can be divided into three groups Q, R and S on the basis of their properties. The substances belonging to group Q can be solids, liquids or gases. The solids belonging to group Q are usually electrical insulators. Most of the substances of group R are solids which are good conductors of electricity. The substances belonging to group S are neither insulators like Q nor good conductors like R. The properties of S are intermediate between those of Q and R.
- What could the group of materials P be ?
- Name the substances Q. Give two examples of such substances.
- Name the substances R. Write two examples of such substances.
- Name the substances S. Give two examples of such substances.
- Out of Q, R and S, which substances are malleable and ductile ?
What is the most common way of expressing the concentration of a solution ?
Define Foam Give one example.
9.72 g of potassium chloride dissolves in 30 g of water at 70°C. Calculate the solubility of potassium chloride at that temperature.
One of the following does not show Tyndall effect. This one is :
Which of the following represents the solubility of sugar in water at 20°C ?
What difference in the property of two miscible liquids enables their separation by fractional distillation ?
Name the process by which the various gases of the air are separated.
Fill in the following blanks with suitable words :
The gases of air can be separated by fractional distillation of liquid air because they have different..............
How is scrap iron separated from a heap of waste materials in factories?
How is the impurity of iron present in several substances removed in industries ?
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?
State whether true or false. If false, correct the statement.
Oil and water are immiscible with each other.
Rusting of an article made up of iron is called
Complete the following table:
| S.No. | CELSIUS | KELVIN |
| 1. | 90°C | 363 K |
| 2. | ______ | 283 K |
| 3. | 63 °C | ______ |
| 4. | 250°C | ______ |
| 5. | ______ | 303 K |
Which statement is not correct for a mixture
