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प्रश्न
Statements given below are incorrect. Write the correct statements :
Bronze is a mixture of 10% copper, 80% zinc and 10% tin.
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उत्तर
Bronze is a mixture of 80% copper, 10% zinc and 10% tin.
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संबंधित प्रश्न
State one use of the following metal:
Mercury
How does the electrical conductivity of copper alloys, brass and bronze, differ from that of pure copper?
Mention two uses of the following metals and non-metals
Oxygen
Fill in the blank
A metal that gives dazzling effect to crackers when they explode is ______
State two important uses of following metal
Uses of tin
Write name.
Alloy of sodium with mercury.
With reference to the following metals state their use in daily life metal:
Lead
Give a reason why a green deposit is seen on the surface of an article of copper
Name the following:
The chemical compound responsible for the green deposit on the surface of articles of copper.
Write the name.
Two highly reactive metals-
Electronic configuration of metal A is 2,8,1. Electronic configuration of metal B is 2,8,8,2. Which of the above metals is more reactive? Explain with reason.
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.
Which one of the following metals do not react with cold as well as hot water?
Name one metal and one non-metal that exist in liquid state at room temperature. Also name two metals having melting point less than 310 K (37°C)
An element forms an oxide A2O3 which is acidic in nature. Identify A as a metal or non-metal.
Metals and non–metals are used for making ______, ______ and ______.
All gases are ______.
Why are metalloids called semimetals?
X [2, 8, 7] and Y [2, 8, 2] are two elements. Using this information, complete the following:
______ is the metallic element.
