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Aqeuous solutions of zinc sulphae and ir...

Aqeuous solutions of zinc sulphae and iron sulphate were taken in test tubes I and II by four students A,B, C and D. Metal pieces of iron and zinc were dropped in the two solutions and observations made after several hours and recorded in the form of a table as given below:

The correct reporting has been made in observation reported by the student:

A

A

B

B

C

C

D

D

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A
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LAKHMIR SINGH & MANJIT KAUR-PERIODIC CLASSIFICATION OF ELEMENTS-Exercise
  1. Four set ups a given below were arranged to identify the gas evolved ...

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  2. Which of the equipments would you choose to prepare and collect sulphu...

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  3. Aqeuous solutions of zinc sulphae and iron sulphate were taken in test...

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  4. The set up used in the laboratory to collect sulphur dioxide is that s...

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  5. A student adds a few drops of the universal indicator to a solution of...

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  6. When zinc metal is heated with caustic soda solution, the gas evolved ...

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  7. Four students observed the colour and odour of acetic acid and its rea...

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  8. A student takes Cu, Al, Fe and Zn piees separtely in four test tubes l...

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  9. Four students (A),(B),(C) and (D) observed the colour and solubility o...

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  10. A student adds a few drops of the universal indicator solution to a di...

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  11. A student strongly heats hydrated ferrous sulphate salt in a dry test-...

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  12. A student took four test tubes containing solutions of different colou...

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  13. A student while heating solid lead nitrate taken in a test tube would ...

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  14. Four students added a small amount of ethanoic acid to sodium hydrogen...

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  15. A student was given an unknown solution in a test tube. When he added ...

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  16. A student placed a few drops of a liquid over a portiin of the red lit...

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  17. A student was asked to carry out a chemical reaction by placing four d...

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  18. When a student added universal indicator solution to one of the follow...

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  19. A student prepared hydrogen chloride gas by treating sodium chloride w...

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  20. When a student added a few drops of barium chloride solution to sodium...

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