Advertisements
Advertisements
प्रश्न
State any five physical properties of a metal.
Physical properties of a metal :
उत्तर
- State : Metals are generally solid at room temperature. Mercury and gallium are liquid metals.
- Hardness : Metals are generally hard.
- Conductivity : Metals in general are good conductors of heat and electricity. Bismuth and tungsten are exceptions.
- Malleability : The property by which metals can be beaten into sheets is called malleability. Metals are generally malleable.
- Ductility : Metals are generally ductile i.e., can be drawn into wires.
APPEARS IN
संबंधित प्रश्न
Give reasons for the following.
Immersion rods for heating liquids are made up of metallic substances.
For the electro-refining of copper: What is the cathode made up of?
Name the non-metal which is used to make electrodes of dry cells.
Name one property which is characteristic of metals.
Which property of copper metal is utilised in making thin wires?
How do non-metals react with oxygen? Explain with an example. Give equation of the reaction involved. What is the nature of the product formed? How will you demonstrate it?
Fill in the blank.
A non-metal used to purify water is ______.
Write ‘True’ or ‘False’ in front of following statement.
Graphite is used in making filaments of electric bulb.
Name a non-metal which is good conductor of electricity.
Name a non-metal whose compounds help in the growth of plants.
Name:
a metal whose oxide is reduced only by carbon
Explain the term Minerals.
Identify the odd term.
Name a non-metal which can form a positive ion.
Give the common name and chemical name of an ore of:
(a) zinc (b) aluminium (c) iron.
Complete the statement given below, by filling in the blank with the correct word:
A non-metal added to swimming pools to kill germs_____.
Select the appropriate option for the following statement:
The element from the halogen family which is most abundant
Diamond is a hard substance.
Which of the following non-metals is a liquid?
The metal is stored in kerosene ______.