A zinc ore gave CO₂ on treatment with a dilute acid. Identify the ore and write its chemical formula.

Academic Chemistry NCERT Class 10

Calamine is the zinc ore that gives carbon dioxide on treatment with dilute acid. Its chemical formula is ZnCO₃.

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Updated on: 10-Oct-2022

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Give the reaction involved during the extraction of zinc from its ore by (a) roasting of zinc ore(b) calcination of zinc ore
An ore on treatment with dilute hydrochloric acid produces brisk effervescence. Name the type of ore with one example. What steps will be required to obtain metal from the enriched ore? Also, write the chemical equations for the reactions involved in the process.
(a) Define the terms (i) mineral (ii) ore, and (iii) gangue.(b) What is meant by the ‘concentration of ore’? (c) Name one ore of copper (other than cuprite). Which compound of copper is present in this ore? Also, write its chemical formula.
(a) Name the method by which aluminium metal is extracted.(b) Give the name and chemical formula of one ore of copper. (c) How is zinc extracted from its carbonate ore (calamine)? Explain with equations.
(a) Name two metals which occur in nature in free state as well as in combined state.(b) Name one ore of manganese. Which compound of manganese is present in this ore? Also write its chemical formula. (c) A zinc ore on heating in air forms sulphur dioxide. Describe briefly any two stages involved in the conversion of this concentrated ore into zinc metal.
(a) Which metal is extracted from bauxite ore?(b) Give the name of one ore of iron. Which iron compound is present in this ore? Write its chemical formula. (c) Describe the extraction of zinc metal from its sulphide ore (zinc blende). Write equations of the reactions involved. (d) Explain why, the galvanised iron article is protected against rusting even if the zinc layer is broken. (e) Name a common metal which is highly resistant to corrosion.
Name the ore of mercury. With the help of balanced chemical equations, explain the process of extraction of mercury from its ore.
(a) Name two metals which are found in free state in nature.(b) What chemical process is used for extracting a metal from its oxide ore? Name one metal which is extracted by this method. (c) Describe the extraction of zinc metal from its sulphide ore as well as its carbonate ore. Write equations of all the reactions involved.
Two ores A and B were taken. On heating ore A gives CO2 whereas, ore B gives SO2. What steps will you take to convert them into metals?
(a) What is the difference between a mineral and an ore?(b) Which metal is extracted from cinnabar ore? (c) Name one ore of sodium. Name the sodium compound present in this ore and write its chemical formula. (d) How is sodium metal extracted? Explain with the help of equation of the reaction involved. (e) Name three other metals which are extracted in a manner similar to sodium.
Two ores X and Y were taken. On heating these ores it was observed that(a) ore X gives CO2 gas, and (b) ore Y gives SO2 gas. Write steps to convert these ores into metals, giving chemical equations of the reactions that take place.
(a) Which metal is extracted from calamine ore?(b) Name one ore of mercury. Which mercury compound is present in this ore? Write its chemical formula. (c) How is copper extracted from its sulphide ore (copper glance), Cu2S ? Explain with equations of the reactions involved. (d) What is an alloy? Give two examples of alloys. (e) How are the properties of an alloy different from those of the constituent elements?
A metal which exists as a liquid at room temperature is obtained by heating its sulphide ore in the presence of air.(a) Name the metal and write its chemical symbol. (b) Write the name and formula of the sulphide ore. (c) Give the equations of chemical reactions involved in the production of metal from its sulphide ore. (d) Name a common device in which this metal is used. (e) Can this metal displace copper from copper sulphate solution? Why?
Write word equations and then balanced equations for the reactions taking place when :(a) dilute sulphuric acid reacts with zinc granules.(b) dilute hydrochloric acid reacts with magnesium ribbon.(c) dilute sulphuric acid reacts with ammonium powder.(d) dilute hydrochloric acid reacts with iron filings.solution
Write word equations and then balanced equations for the reaction taking place when(a) dilute sulphuric acid reacts with zinc granules(b) dilute hydrochloric acid reacts with magnesium ribbon(c) dilute sulphuric acid reacts with aluminium powder(d) dilute hydrochloric acid reacts with iron filing.

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