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Which of the following have an enol form? I. benzaldehyde, C6H5CHO II. 2,2-dimethylpropanal, (CH3)3CCHO III. 2-chloropropanal, CH3CHClCHO A)  only I    B)  only II    C)  only III    D)  all of them have an enol form

Which of the following could be used as the missing reagent to carry out the following transformation? A) CH3CH=O C) CH3CH2CH2Br B) CH3CH2CH2OH D) CH3CH2CH2CH2I  

Identify the most acidic hydrogen in the following compound.    A)  1    B)  2    C)  3    D)  4

Which one of the following has two different enol forms?     A) cyclohexanone C) 3,3-dimethylcyclohexanone   B) 2,2-dimethylcyclohexanone D) 4,4-dimethylcyclohexanone

Which of the following has the highest percentage of enol in a keto-enol equilibrium? A)  hexanal    B)  2-hexanone    C)  2,4-hexanedione    D)  2,5-hexanedione

Which process does not occur in the nucleus?

Which of the following stages of the kidney do remnants contribute to development of male genital system.

Two purple flowers are heterozygous for the gene that controls flower color. What percent of their offspring would you predict would be white?

At the end of the second week, the bilaminar germ disc starts to develop into three layers. This occurs throughout the disc with the exception of these regions:

Deoxygenated blood is carried from the fetus to the placenta by the ______.