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प्रश्न
Cassiterite is a copper ore.
विकल्प
Right
Wrong
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उत्तर
Cassiterite is a copper ore- Wrong
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संबंधित प्रश्न
Give the importance of the following for living beings:
Nitrogen
Metal A has an electronic configuration of 2, 8, 1 and metal B has 2, 8, 8, 2 which is more reactive metal.
Give the effect of heat on their ?
oxides
Metal A has an electronic configuration of 2, 8, 1 and metal B has 2, 8, 8, 2 which is more reactive metal.
Give the effect of heat on their: hydroxide
Name the processes involved in refining of ores.
Name:
(b) two metallic oxides which cannot be reduced by carbon, carbon monoxide or hydrogen
`2Pb(NO3)_2`
.........................
`2AgNO_3`
...........................
`2Cu_2O +Cu_2S`
......................
`HgS + O_2`
..................
Where are the cathode and anode in the electrolytic cell? Name the material used for these?
state the reactions at the two electrodes ?
Why is flux used in the blast furnace?
what does it form with silica present in the ore?
Which metal is used for:
making face creams
What is magnalium? Name the main elements present in it? Write its one use ?
Name the following:
Name an allotrope of a non-metal that allows electricity to pass through it.
Explain the hydraulic separation method with a neat labelled diagram.
Complete the following flowchart.
