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प्रश्न
Name the following:
The chemical compound responsible for the green deposit on the surface of articles of copper.
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उत्तर
Copper carbonate (CuCO3)
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संबंधित प्रश्न
Give reasons for the following.
Copper cannot displace zinc from its salt solution.
State one use of the following metal:
Aluminium
State one use of the following metal:
Mercury
The alloy in which one of the metals is mercury is called an ______.
What elements are present in steel?
Statements given below are incorrect. Write the correct statements :
Bronze is a mixture of 10% copper, 80% zinc and 10% tin.
Tick (√) the most appropriate answer.
Graphite is used :
State two important uses of following metal.
Uses of copper
Write name.
Alloy of sodium with mercury.
Write name.
The nonmetal having electrical conductivity.
State the position of the following in the periodic table:
Halogens
What is it made from? Why?
A pair of tongs.
With reference to the following metals state their use in daily life metal:
Zinc
Give a reason why a green deposit is seen on the surface of an article of copper
Name the following:
The most reactive halogen.
Can you store pickle in an aluminium utensil? Give reason.
Give an example of a metal which
- is liquid at room temperature.
- is the best conductor of heat.
Sodium is a hard metal.
X [2, 8, 7] and Y [2, 8, 2] are two elements. Using this information, complete the following:
______ is the metallic element.
X [2, 8, 7] and Y [2, 8, 2] are two elements. Using this information, complete the following:
______ is the reducing agent.
