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प्रश्न
What do you understand by the term non-metal?
उत्तर
The elements which are either gases or soft solids, have no lustre, are non-malleable and non-ductile and bad conductors of heat and electricity are called non-metals.
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संबंधित प्रश्न
Name one metal which has a low melting point.
Which of the following are amphoteric oxides:
MgO, ZnO, P2O3, Al2O3, NO2
Name the metal which is used in making thermometers.
Define non-metals. Give five examples of non-metals.
State any five physical properties of a non-metal.
State two important uses of following non-metal
Uses of chlorine
State the composition of given alloy:
Bronze
Name:
a metal which is a bad conductor of heat and electricity
Name:
a non-malleable metal
`Cl +e- → —`
Select from the following ist:
`Fe_2O_3, , NO, PbO, Mn_2O_7`
Neutral oxide ……………..
Explain how the activity series accounts for each of the following:
reaction with water
Which metals do not corrode easily?
Complete the table.
| Property of metal | Use in everyday life |
| i. Ductility | |
| ii. Malleability | |
| iii. Conduction of heat | |
| iv. Conduction of electricity | |
| v. Sonority |
Identify the odd term.
Write scientific reason.
Sodium metal is kept in kerosene.
Which metal occurs as an oxide also gives the name of their respective ore.
Select the appropriate option for the following statement:
The element which is a noble metal.
The metal is stored in kerosene ______.
Compounds obtained from non–living sources are called ______.
