A shiny brown coloured element 'X' on he...

A shiny brown coloured element 'X' on heating in air becomes black in colour. Can you predict the element 'X' and the black coloured substance formed? How do you support your predictions?

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ATOMS AND MOLECULES
VGS PUBLICATION-BRILLIANT|Exercise OBJECTIVE TYPE QUESTION|1 Videos

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VGS PUBLICATION-BRILLIANT-ATOMS ,MOLECULES AND CHEMICAL REACTIONS-EXERCISE

How many molecules are there in 18 grams of water?
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We write symbol of water as H2O. State why should not we write it HO2'...
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A shiny brown coloured element 'X' on heating in air becomes black in ...
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A student was given the following substances and was asked to show typ...
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Why does respiration considered as an exothermic reaction ? Explain.
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Is 'Na' an element or compond? Why
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Is O2 an element or compound? Why
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''Freshly cut apple turning brown, the iron articles shiny when new, b...
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Take two beakers and prepare lead nitrate aqueous solution and potassi...
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Latha take some quantity of powder of a substance in a test tube. Heat...
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A light-yellow colour substance (some quantity) on a watch glass light...
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What is the unit of atomic mass?
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On the basis of molecular weights of NaOH and H2O, which is heavier?
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Collect the symbols of various elements.
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Give examples to different net charged ions ?
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Prepare formulae for compounds by using Criss- Cross methods.
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Make a chart showing the concept of mole.
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Draw the diagram of arrangement of appartmentus in the activity of he...
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Draw the diagram of “ Electrolysis of water”.
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Draw the diagram of reduction of copper oxide to copper and label it.
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