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प्रश्न
Complete the table.
| Property of metal | Use in everyday life |
| i. Ductility | |
| ii. Malleability | |
| iii. Conduction of heat | |
| iv. Conduction of electricity | |
| v. Sonority |
उत्तर
| Property of metal | Use in every day life |
| i. Ductility | In electrical wires, cable wires etc. |
| ii. Malleability | Aluminium foil |
| iii. Conduction of heat | Cooking wares, microwave, electric press, straightening machine, electric belts |
| iv. Conduction of electricity | Bulb, tubelight, lamp, refrigerator, television |
| v. Sonority | Cymbals, doorbells |
संबंधित प्रश्न
Explain the meaning of malleable.
You are given a hammer, a battery, a bulb, wires and a switch.
- How could you use them to distinguish between samples of metals and non-metals?
- Assess the usefulness of these tests in distinguishing between metals and non-metals.
Mark ‘T’ if the statement is true and ‘F’ if it is false.
Coal can be drawn into wires. ( )
Some properties are listed in the following Table. Distinguish between metals and non-metals on the basis of these properties
| Properties | Metals | Non-metals |
| 1. Appearance | Lustrous | Dull |
| 2. Hardness | Hard | Soft |
| 3. Malleability | Can be beaten into thin sheets | Cannot be beaten into thin sheets |
| 4. Ductility | Can be drawn into wires | Cannot be drawn into wires |
| 5. Heat Conduction | Good conductors of heat | Poor conductors of heat |
| 6. Conduction of Electricity | Good conductors of electricity | Poor conductors of electricity |
Choose the correct answer from the options given below:
Anhydrous iron(III) chloride is prepared by:
1) direct combination
2) simple displacement
3) decomposition
4) neutralization
Give the name and formulae of two basic oxides.
Name the non-metal which is used to convert vegetable oil into vegetable ghee (solid fat).
Name one property which is characteristic of non-metals.
Metals are said to be shiny. Why do metals generally appear to be dull? How can their brightness be restored?
Name a non-metal that is used to kill germs in water
Name the metals present in the following alloys
Bronze
Give four differences between metals and non-metals with reference to their:
- Melting point and boiling point
- The conductivity of heat and electricity
- Malleability
- Solubility
Write ‘True’ or ‘False’ in front of following statements.
Non-metals are poor conductors of electricity.
What do you understand by the term metal?
Name a non-metal whose compounds help in the growth of plants.
State two important uses of following non-metal
Uses of oxygen
State two important uses of following non-metal
iodine
Name:
a metal which can be cut with a knife.
Name:
two metallic oxides which are amphoteric
Name:
a metal whose oxide is reduced only by carbon
What are the metals that make the alloys brass and bronze?
Which metal occurs as a carbonate also gives the name of their respective ore.
Gold and silver are used to make jewellery. Give reason
Complete the statement given below, by filling in the blank with the correct word:
A metal which floats on water _____
Diamond is a hard substance.
Identify who I am!
Carbon allotropes- _______
Alloys are homogeneous mixtures of a metal with a metal or non-metal. Which among the following alloys contain non-metal as one of its constituents?
Non-metals are usually good conductors of heat and electricity.
