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Aldehydes Keton...

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  • Question 1
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    Best starting material to synthesize 2-methylpentan-2-ol is

  • Question 2
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    Nucleophilic addition reaction will be most favoured in:

  • Question 3
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    The synthesis of crotonaldehyde from acetaldehyde is an example of........... reaction.

  • Question 4
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    In the reaction,

        $${ C }_{ 2 }{ H }_{ 5 }OH\xrightarrow [  ]{ P{ I }_{ 3 } } (A)\xrightarrow [  ]{ KCN } (B)\xrightarrow [  ]{ Hydrolysis } (C)$$

    The product (C) is:

  • Question 5
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    Which of the following statements is not correct? 

  • Question 6
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    Which of the following compounds will give carboxylic acid with nitrous acid $$ (HNO_2)? $$

  • Question 7
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    Oil of vanilla bean is

  • Question 8
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    Directions For Questions

    A carbonyl compound $$P$$, which gives positive iodoform test, undergoes reaction with $$MeMgBr$$ followed by dehydration to give an olefin $$Q$$. Ozonolysis of $$Q$$ leads to a dicarbonyl compound $$R$$, which undergoes intramolecular aldol reaction to give predominantly $$S$$.
    $$P \underset {\underset {3. H_{2}SO_{4}, \triangle}{2.H^{+}, H_{2}O}}{\xrightarrow {1. MeMgBr}} Q \underset {2. Zn, H_{2}O}{\xrightarrow {1. O_{3}}} R \underset {2.\triangle}{\xrightarrow {1. OH^{-}}} S$$.

    ...view full instructions

    The structures of the products $$Q$$ and $$R$$, respectively, are

  • Question 9
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    Directions For Questions

    A carbonyl compound $$P$$, which gives positive iodoform test, undergoes reaction with $$MeMgBr$$ followed by dehydration to give an olefin $$Q$$. Ozonolysis of $$Q$$ leads to a dicarbonyl compound $$R$$, which undergoes intramolecular aldol reaction to give predominantly $$S$$.
    $$P \underset {\underset {3. H_{2}SO_{4}, \triangle}{2.H^{+}, H_{2}O}}{\xrightarrow {1. MeMgBr}} Q \underset {2. Zn, H_{2}O}{\xrightarrow {1. O_{3}}} R \underset {2.\triangle}{\xrightarrow {1. OH^{-}}} S$$.

    ...view full instructions

    The structure of the carbonyl compound $$P$$ is

  • Question 10
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    Compound ' P ' of the following reaction sequence can be:

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