class 12 chapter 10,11, 12

• K₁ = K₂

• K₁ > K₂

• K₁ < K₂

• K₁ << K₂

• constitutional isomer

• enantiomer

• identical

• none of these

Which of the following correctly ranks the aryl halides in decreasing order of reactivity towards sodium methoxide in methanol?

Correct order of reactivity of aryl halides with respect to CH₃ONa/ CH₃OH

• 
• 
• 
• 

• AlCl₃

• HCl

• H₂SO₄

• Na

• a ketone which is meso and optically inactive

• an optically active ketone

• a racemic mixture of ketones which is optically inactive

• an aldehyde which is meso and optically active

• a

• b

• c

• d

In Reimer-Tieman reaction moleculare weight of phenol insreases by:

• 28

• 29

• 30

• 31

• i>ii>iii

• i>iii>ii

• iii>ii>i

• ii>i>iii

Which one of the following compounds will give dimethyl glyoxal with SeO₂?

• Acetone

• Acetophenone

• Ethyl methyl ketone

• propanealdehyde

Cannizzaro reaction is an example of:

• Redox Reaction

• Disproportionation reaction

• both redox and disproportionation

• only oxidation