Practical Analytical Chemistry Quiz ( Cations )

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| By Momenabdelmoniem
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Momenabdelmoniem
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Quizzes Created: 3 | Total Attempts: 684
Questions: 10 | Attempts: 356

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Practical Analytical Chemistry Quiz ( Cations ) - Quiz


Questions and Answers
  • 1. 

    Group 1 cations : we add (????) dil HCL

    • A.

      Excess

    • B.

      Slight excess

    • C.

      Large excess

    Correct Answer
    B. Slight excess
    Explanation
    The correct answer : slight excess

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  • 2. 

    Group 1 cations : why we add ( slight excess ) from HCL ?

    • A.

      To make complete perceptation to cations

    • B.

      To direct the reaction to form AgCl

    • C.

      To reduce solubility of AgcL

    • D.

      All answers above are right

    Correct Answer
    D. All answers above are right
    Explanation
    the correct answer is : All answers above are right

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  • 3. 

    PbCrO4 ppt is yellow 

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    the correct answer is : True

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  • 4. 

    Sb2S3 ppt coulor is ?

    • A.

      Yellow

    • B.

      Red

    • C.

      Black

    • D.

      Option4

    Correct Answer
    B. Red
    Explanation
    Red is the correct answer

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  • 5. 

    Why we add KNO3 to the ppt ( Group 2 cations ) ?

    • A.

      To form colloidal solution

    • B.

      Prevent occurrence colloidal solution

    Correct Answer
    B. Prevent occurrence colloidal solution
    Explanation
    Prevent occurrence colloidal solution

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  • 6. 

    PbCL2 is solouble in cold water

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    hot water not cold

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  • 7. 

    Group 2 cations : the amount of Hcl should be ?

    • A.

      From 0.2 to 0.3 M

    • B.

      More Than 0.3 M

    • C.

      Less than 0.2 M

    Correct Answer
    A. From 0.2 to 0.3 M
    Explanation
    the correct answer is : from 0.2 to 0.3 M

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  • 8. 

    What happened if the amount of HCL in Group 2 cations is less than 0.2 M ?

    • A.

      It will perceptate the cations of Group 3

    • B.

      It will perceptate the cations of Group 4

    • C.

      It will perceptate the cations of Group 5

    Correct Answer
    B. It will perceptate the cations of Group 4
    Explanation
    it will perceptate the cations of Group 4 is the correct answer

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  • 9. 

    CO+2  is a member of Group ??

    • A.

      3

    • B.

      4

    • C.

      5

    Correct Answer
    B. 4
    Explanation
    4

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  • 10. 

    1 ml solution of ( Ni+2 )  +  ( DMG )  Give ??

    • A.

      Blood Red colour

    • B.

      Pale yellow colour

    • C.

      Rose Red colour

    • D.

      Option 4

    Correct Answer
    C. Rose Red colour
    Explanation
    Rose red colour

    Rate this question:

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