Acetone And Acetophenone Quiz

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Momenabdelmoniem
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Quizzes Created: 3 | Total Attempts: 684
Questions: 8 | Attempts: 203

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Acetone And Acetophenone Quiz - Quiz


Questions and Answers
  • 1. 

    How to differentiate between acetone and acetophenone ?

    • A.

      Dry ignition test

    • B.

      Miscibility

    • C.

      Phenyl hydrazine

    • D.

      " a " and " b" are both correct

    • E.

      "b" and " c" are both correct

    • F.

      A , b , c are all correct

    Correct Answer
    F. A , b , c are all correct
    Explanation
    The correct answer is a , b , c are all correct.

    The dry ignition test is a method used to differentiate between acetone and acetophenone. Acetone readily evaporates upon ignition, leaving no residue, while acetophenone leaves a dark residue.

    Miscibility is another way to differentiate between the two compounds. Acetone is completely miscible in water, while acetophenone is only partially miscible.

    Lastly, phenyl hydrazine can be used to distinguish between acetone and acetophenone. Acetone does not react with phenyl hydrazine, while acetophenone forms a yellow-orange precipitate.

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  • 2. 

    " sodium nitroprusside " Can Or Can't differentiate between acetone and acetophenone ?

    • A.

      Can

    • B.

      Can't

    Correct Answer
    B. Can't
    Explanation
    Sodium nitroprusside cannot differentiate between acetone and acetophenone. This is because sodium nitroprusside is a reagent that is commonly used to test for the presence of ketones, but it does not have the ability to distinguish between different types of ketones. Therefore, it will give the same result for both acetone and acetophenone, making it unable to differentiate between them.

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  • 3. 

    Why sodium nitroprusside can't differentiate between acetone and acetophenone ?

    • A.

      Because the exist of O=C--CH3 G.function

    • B.

      Because the exist of O=C--OH G.function

    • C.

      Because the exist of O=C--H G.function

    • D.

      A and b are both correct

    Correct Answer
    A. Because the exist of O=C--CH3 G.function
    Explanation
    The correct answer is "because the exist of O=C--CH3 G.function". Sodium nitroprusside cannot differentiate between acetone and acetophenone because both compounds have a similar functional group, which is O=C--CH3. This functional group is responsible for the reaction with sodium nitroprusside, causing a color change. Therefore, both acetone and acetophenone would produce a similar result when reacted with sodium nitroprusside.

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  • 4. 

    Iodoform is the confirmatory test for ________ ?

    • A.

      Ketone

    • B.

      Aldehyde

    • C.

      Aldehyde and Ketone

    Correct Answer
    A. Ketone
    Explanation
    Iodoform is the confirmatory test for ketone.

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  • 5. 

    We use fehling solution as Oxadizing agent ..

    • A.

      Yes

    • B.

      No

    • C.

      Option 3

    • D.

      Option 4

    Correct Answer
    B. No
    Explanation
    The explanation for the answer "No" is that Fehling solution is not used as an oxidizing agent. Fehling solution is a chemical reagent used for detecting the presence of reducing sugars, particularly aldehydes. It consists of two separate solutions, Fehling solution A and Fehling solution B, which are mixed together before use. When a reducing sugar is present, it reacts with Fehling solution to form a reddish-brown precipitate of copper(I) oxide. Therefore, Fehling solution is not an oxidizing agent but rather a reducing agent.

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  • 6. 

    Sodium nitroprusside Give .... ?

    • A.

      Red blood ppt

    • B.

      Canary yellow ppt

    • C.

      Red blood colour

    • D.

      Option 4

    Correct Answer
    C. Red blood colour
    Explanation
    Sodium nitroprusside is known to react with certain compounds, such as cysteine, to produce a red color. Therefore, when sodium nitroprusside is given, it is expected to result in a red blood color. This is the correct answer.

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  • 7. 

    No effervescence with Na2Co3 is an evidence that ?

    • A.

      The unknown is acid

    • B.

      The unknown is not acid

    • C.

      Option 3

    • D.

      Option 4

    Correct Answer
    B. The unknown is not acid
    Explanation
    The absence of effervescence with Na2Co3 indicates that the unknown substance is not acidic. Effervescence is the release of gas bubbles when an acid reacts with a carbonate compound like Na2Co3. Since there is no effervescence observed, it suggests that the unknown substance does not possess acidic properties.

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  • 8. 

    The colour of ppt of iodoform is yellow ppt with turbidity

    • A.

      Yes

    • B.

      No

    • C.

      Yes , but without turbidity

    Correct Answer
    A. Yes
    Explanation
    The correct answer is "yes" because the color of the ppt (precipitate) of iodoform is indeed yellow. The presence of turbidity is not mentioned in the given statement, so it is not a necessary characteristic of the iodoform ppt.

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