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प्रश्न
Name a metal which is best conductor of electricity :
उत्तर
Silver
APPEARS IN
संबंधित प्रश्न
State one use of Iron.
State one use of Silver.
State one use of Gold.
Name two alloys of iron. What elements are present in these alloys?
Mention two uses of the following metals and non-metals
Gold
Mention two uses of the following metals and non-metals
Iodine
Give reasons
Gold is mixed with copper and nickel.
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.
Statements given below are incorrect. Write the correct statements :
Bronze is a mixture of 10% copper, 80% zinc and 10% tin.
State the position of the following in the periodic table:
Aluminium
Give the general characteristics of:
Alkaline earth metals with reference to
(i) bonding
(ii) action of air
(iii) action of water
(iv) action of acid
Take an element from an alkali metal and one from an alkaline earth metal and write an equation for their action with:
Oxygen
Write name.
The oxide that forms salt and water by reacting with both acid and base.
What is it made from? Why?
Electric cables
With reference to the following metals state their use in daily life metal:
iron
Compare the properties of metals and nonmetals. Give three examples for each.
Name two soft metals which can be cut with a knife.
Metals have high melting points.
Match the following
| i. | Softest metal | a. | Copper |
| ii. | Hardest metal | b. | Sodium |
| iii. | Hardest non–metal | c. | Osmium |
| iv. | Ductility | d. | Diamond |
