Aldose
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Q. The correct corresponding order of names of four aldoses with configuration given below respectively, is:
- L-erythrose, L-threose, D-erythrose, D-threose
- D-erythrose, D-threose, L-erythrose, L-threose
- L-erythrose, L-threose, L-erythrose, D-threose
- D-threose, D-erythrose, L-threose, L-erythrose
Q. On monochlorination of 2-methyl butane, the total number of chiral compounds formed is:
Q. Which two of the following compounds are reduced to the same chiral alditol by sodium borohydride?
- II and III
- I and II
- III and IV
- II and IV
Q. The correct corresponding order of names of four aldoses with configuration given below
respectively, is
- D - threose, D - erythrose, L - threose, L - erythrose
- D - erythrose, D - threose, L - erythrose, L - threose
- L - erythrose, L - threose, D - erythrose, D - threose
- L - erythrose, L - threose, L - erythrose, D - threose
Q. The correct corresponding order of names of four aldoses with configuration given below
respectively, is
- L - erythrose, L - threose, L - erythrose, D - threose
- D - threose, D - erythrose, L - threose, L - erythrose
- L - erythrose, L - threose, D - erythrose, D - threose
- D - erythrose, D - threose, L - erythrose, L - threose
Q. Which of the following carbocation would have the greatest stability?
- CH3−S−+CH2
- (CH3)2N+CH2
- CH3O+CH2
- F+CH2
Q. Which two of the following compounds are reduced to the same chiral alditol by sodium borohydride?
- II and III
- I and II
- III and IV
- II and IV
Q. Which two of the following compounds are reduced to the same chiral alditol by sodium borohydride?
- II and III
- I and II
- III and IV
- II and IV
Q. What are carbocations ? Discuss their various types.
Q. The correct corresponding order of names of four aldoses with configuration given below respectively, is:
- L-erythrose, L-threose, D-erythrose, D-threose
- D-erythrose, D-threose, L-erythrose, L-threose
- L-erythrose, L-threose, L-erythrose, D-threose
- D-threose, D-erythrose, L-threose, L-erythrose
Q. The correct corresponding order of names of four aldoses with configuration given below
respectively, is
- L - erythrose, L - threose, L - erythrose, D - threose
- D - threose, D - erythrose, L - threose, L - erythrose
- L - erythrose, L - threose, D - erythrose, D - threose
- D - erythrose, D - threose, L - erythrose, L - threose