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प्रश्न
Give a reason why a green deposit is seen on the surface of an article of copper
उत्तर
The green deposit of the surface of the articles made of copper is seen due to the formation of green copper carbonate.
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संबंधित प्रश्न
Fill in the following blanks with suitable words:
A metal having low melting point is ..................... but a non-metal having very high melting point is ..............
State one use of Copper.
How are the properties of an alloy different from those of the constitutent elements?
Give reasons
Aluminium is used in making aircrafts.
Statements given below are incorrect. Write the correct statements :
Zinc is used for making power transmission wires.
State two important uses of following metal
Uses of zinc
Write name.
Molecular formula of the common ore of aluminium.
Write name.
The device used for grinding an ore.
State the position of the following in the periodic table:
Halogens
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:
Magnesium
With reference to the following metals state their use in daily life metal:
Zinc
An element which is always lustrous, malleable and ductile is ______.
Give reasons for the following.
- Aluminum foils are used to wrap food items.
- Immersion rods for heating liquids are made up of metallic substances.
- Sodium and potassium are stored in kerosene.
- Mercury is used in thermometers.
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 property is generally not shown by metals?
Which of the following metals can displace the other two metals from their salt solutions?
| Zinc | iron | copper |
Metals and non–metals are used for making ______, ______ and ______.
Which metals are not solid at room temperature?
X [2, 8, 7] and Y [2, 8, 2] are two elements. Using this information, complete the following:
______ is the metallic element.
