Advertisements
Advertisements
प्रश्न
State two important uses of following metal
Uses of aluminium
State two uses of aluminium.
उत्तर १
Uses of aluminium :
- Aluminium foils are used for packing food stuff, medicines etc.
- It is used for making high voltage electric transmission wires.
उत्तर २
Uses of aluminium:
- It is used for making pots, pans and parts of automobiles.
- It is used to make electrical wires.
संबंधित प्रश्न
What happens when Dilute sulphuric acid is poured on a copper plate?
Write word equations of the reactions involved.
State one use of Aluminium.
The atomic number of an element Y is 16.
(a) What must an atom of Y do to achieve the nearest inert gas electron arrangement?
(b) Which inert gas is nearest to Y?
A metal with melting point less than 50°C is
A metal which is neither ductile nor malleable is
Write name.
The nonmetal having electrical conductivity.
Write scientific reason.
Sodium is always kept in kerosene.
Write scientific reason.
Pine oil is used in froth flotation.
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 |
State the position of the following in the periodic table:
Halogens
Give a reason why iron objects rust easily but the iron pillar at Qutab Minar has not rusted over the years.
Assertion: Mercury is solid in room temperature.
Reason: Mercury is a non-metal.
Generally, metals are solid in nature. Which one of the following metals is found in a liquid state at room temperature?
Which of the following two combinations are correct?
Metal | Gas Evolved | |
(i) | Copper | Yes |
(ii) | Iron | Yes |
(iii) | Magnesium | No |
(iv) | Zinc | Yes |
The ability of metals to be drawn into thin wire is known as
Give an example of a metal which
- is liquid at room temperature.
- is the best conductor of heat.
Why do metals appear shiny?
Compare the conductivity of metals and non–metals.