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प्रश्न
Name a metal which is best conductor of electricity :
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उत्तर
Silver
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संबंधित प्रश्न
State one use of Copper.
Give reasons
Magnesium is used in fire works.
Give reasons
Graphite is used in the leads of pencils
Give two uses of Germanium
State two important uses of following metal:
Uses of gold
State two important uses of following metals:
Uses of iron
State two important uses of following metal
Uses of lead
State the position of the following in the periodic table:
Alkali metals
State the position of the following in the periodic table:
Aluminium
Take an element from an alkali metal and one from an alkaline earth metal and write an equation for their action with:
Oxygen
Why are alkali metals kept in kerosene oil?
Write name.
The device used for grinding an ore.
Match the alloys given in column I to the uses given in column II :
| Column I | Column II |
| (i) Duralumin | A. Electrical fuse |
| (ii) Solder | B. Surgical instruments |
| (iii) Brass | C. Aircraft body |
| (iv) Stainless Steel | D. Decorative articles |
With reference to the following metals state their use in daily life metal:
copper
With reference to the following metals state their use in daily life metal:
Zinc
With reference to the following metals state their use in daily life metal:
Lead
Name two soft metals which can be cut with a knife.
A doctor prescribed a tablet to a patient suffering from iron deficiency. The tablet does not look like iron. Explain.
The metal can be cut with a knife ______.
Why do metals appear shiny?
