3272441
Descripción
Test por SHRIYA SHARMA , actualizado hace más de 1 año
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Creado por SHRIYA SHARMA
hace casi 9 años
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Pregunta 1
Pregunta
Tick the correct facts on Transition metals.
Respuesta
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High Melting point
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Bad conductors of Heat and Electricity
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High Density
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They don't form colored compounds
Pregunta 2
Pregunta
Is copper a transition metal ?
Respuesta
- True
- False
Pregunta 3
Pregunta
Why is titanium an expensive metal ?
Respuesta
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This is because it is difficult to extract titanium from its ore
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It has a high Boiling point
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Its a reactive metal.
Pregunta 4
Pregunta
What is the main ore of Titanium? and symbol
Respuesta
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Bauxite, Al203.
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Rutile, Ti02.
Pregunta 5
Pregunta
What does the term 'Hydrated' mean ?
Respuesta
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A person is dehydrated.
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The compound contains water.
Pregunta 6
Pregunta
What is the Equation when Titanium Chloride reacts with Magnesium?
Respuesta
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Titanium Chloride + Magnesium - Titanium + Magnesium Chlorine.
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Titanium + Magnesium - Titanium + Magnesium Chloride
Pregunta 7
Pregunta
Does Copper compounds create the color red ?
Respuesta
- True
- False
Pregunta 8
Pregunta
What are transition metals used for ?
Respuesta
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Coins, cups and railways
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To make pipes and door handles
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Planes, cars. (except for mercury).
Pregunta 9
Pregunta
What are the carat scale and the Fineness scale used for?
Respuesta
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to measure how reactive the metal is.
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They are both used to show the amount of pure gold in the alloy. The higher the number the greater the prop- ortion of gold.
Pregunta 10
Pregunta
In which process is iron used as a catalyst ?
Respuesta
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Haber process
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Electrolysis
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Blast furnace
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