Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.
Advertisement

 Multiple Choice QuestionsMultiple Choice Questions

Advertisement
1.

Which among the following metals is refined by electrolytic method?

  • Aluminium

  • Bismuth

  • Tin

  • Lead


2.

Which one of the following ores is best concentrated by froth flotation method?

  • Siderite

  • Galena

  • Malachite

  • Malachite

314 Views

3.

In the context of the Hall-Heroult process for the extraction of Al, which of the following statements is false?

  • CO and CO2 are produced in this process

  • Al2O3 is mixed with CaF2 which lowers the melting point of the mixture and brings conductivity

  • Al3+ is reduced at the cathode to form Al

  • Al3+ is reduced at the cathode to form Al

382 Views

4.

The metal that cannot be obtained by electrolysis of an aqueous solution of its salts is

  • Ag

  • Ca

  • Cu

  • Cu

276 Views

Advertisement
5.

Which series of reactions correctly represents chemical relations related to iron and its compound?

  • Fe rightwards arrow with Dil comma space straight H subscript 2 SO subscript 4 on top space FeSO subscript 4 rightwards arrow with straight H subscript 2 SO subscript 4 comma space straight O subscript 2 on top space Fe subscript 2 left parenthesis SO subscript 4 right parenthesis subscript 3 rightwards arrow with Heat on top Fe
  • Fe rightwards arrow with blank subscript O subscript 2 comma space H e a t end subscript on top space FeSO subscript 4 rightwards arrow with space space Dil space straight H subscript 2 SO subscript 4 comma on top space FeSO subscript 4 rightwards arrow with Heat on top Fe
  • Fe space rightwards arrow with Cl subscript 2 comma space Heat on top space FeCl subscript 3 space rightwards arrow with Heat comma space air on top FeCl subscript 2 rightwards arrow with Zn on top space Fe
  • Fe space rightwards arrow with Cl subscript 2 comma space Heat on top space FeCl subscript 3 space rightwards arrow with Heat comma space air on top FeCl subscript 2 rightwards arrow with Zn on top space Fe
253 Views

6.

Which method of purification is represented by the following equation

Ti left parenthesis straight s right parenthesis space plus 2 straight I subscript 2 space left parenthesis straight g right parenthesis space rightwards arrow with 523 space straight K on top space Til subscript 4 space left parenthesis straight g right parenthesis
rightwards arrow with 1700 space straight K on top space Ti space left parenthesis straight s right parenthesis space plus space 2 space straight I subscript 2 space left parenthesis straight g right parenthesis

  • zone refining

  • cupellation

  • Polling

  • Polling

282 Views

7.

Which of the following factors is of no significance for roasting sulphide ores to the oxides and not subjecting the sulphide ores to carbon reduction directly?

  • Metal sulphides are thermodynamically more stable than CS2

  • CO2 is thermodynamically more stable than CS2

  • Metal sulphides are less stable than the corresponding oxides

  • Metal sulphides are less stable than the corresponding oxides

327 Views

8.

During the process of electrolytic refining of copper, some metals present as impurity settle as ‘anode mud’ These are

  • Sn and Ag

  • Pb and Zn

  • Ag and Au

  • Ag and Au

238 Views

Advertisement
9.

Heating mixture of Cu2O and Cu2S will give

  • Cu + SO2

  • Cu + SO3

  • CuO + CuS

  • CuO + CuS

509 Views

10.

Which one of the following ores is best concentrated by froth – floatation method?

  • Magnetite

  • Malachite

  • Galena

  • Galena

229 Views

Advertisement