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प्रश्न
Complete the following flow chart.
उत्तर
| Physical properties of metals | ||||
| Ductile and malleable | Good conductors of heat and electricity | Lustrous | Sonorous | Hard (except lithium, sodium, potassium) |
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संबंधित प्रश्न
Write the name and formulae of a metal hydride.
Which property of graphite is utilised in making electrodes?
State one use of Aluminium.
Name two alloys of iron. What elements are present in these alloys?
What is a thermite reaction? Explain with the help of an equation. State one use of this reaction.
Name one ore of manganese. Which compound of manganese is present in this ore? Also write its chemical formula.
Explain how, a reduction reaction of aluminium can be used for welding cracked machine parts of iron. Write a chemical equation for the reaction involved.
What is meant by 22 carat gold? Name the metals which are usually alloyed with gold to make it harder.
How are the properties of an alloy different from those of the constitutent elements?
Write ‘true’ or ‘false’ for the following statement :
Silver is used to make electric cables.
Fill in the blank spaces by choosing the correct words from the given list.
List: amalgam, chlorine, gallium, sodium chloride, silver chloride
______ is a liquid metal.
Tick (√) the most appropriate answer.
Graphite is used :
State two important uses of following metal:
Uses of silver
State the position of the following in the periodic table:
Alkali metals
Take an element from an alkali metal and one from an alkaline earth metal and write an equation for their action with:
Oxygen
What was Mendeleev's basis for the classification of elements?
What is it made from? Why?
Electric cables
With reference to the following metals state their use in daily life metal:
Silver
The minerals from which the metal can be separated economically are called _______.
Aluminium: _______: gold : : electric insulator
