Home
Class 12
CHEMISTRY
Consider all possible isomeric ketones i...

Consider all possible isomeric ketones including stereoisomers of relative molar mass of 100. All these isomers are independently reacted with `NaBH_(4)`.(Note : stereoisomers are also reacted separately).The total number of ketones that give a racemic products is / are ....... .

Text Solution

Verified by Experts

The correct Answer is:
5
Promotional Banner

Topper's Solved these Questions

  • ALCOHOL, ETHER AND EPOXY

    GRB PUBLICATION|Exercise STRAIGHT OBJECTIVE TYPE|22 Videos

  • ALCOHOL, ETHER AND EPOXY

    GRB PUBLICATION|Exercise MATCH THE COLUMN TYPE|13 Videos

  • ALCOHOLS AND ETHERS

    GRB PUBLICATION|Exercise level 62|1 Videos

Similar Questions

Explore conceptually related problems

Consider all possible isomeric ketones, including stereoisomers, of MW = 100. All these isomers are independently reacted with NaBH_(4) (NOTE: stereoisomers are also reacted separately). The total number of ketones that give a racemic product(s) is/are

Stereoisomerism occurs when the bond connectivity is same but the spatial arrangement of more than one type is possible. Stereoisomerism finds vast use in orgaic chemistry, mainly biochemistry as all the biomolecules, are generally stereospecific in their actions. Stereoisomerism in limited not only to organic compounds but also to anorganic compounds, mainly in co-ordination complexes. Stereoisomers include cis and trans isomers, chiral isomers, compound wilth different conformation of chelate rings and other isomers that differ only in the geometry of attachement of the metal ion. Select the incorrect statement:

Read the following text and answer the following questions on the basis of the same: Band theory of solid: Consider that the Si or Ge crystal contains N atoms. Electrons of each atom will have discrete energies in different orbits. The electron energy will be same if all the atoms are isolated, i.e., separated from each other by a large distance. However, in a crystal, the atoms are close to each other (2 Å to 3 Å) and therefore the electrons interact with each other and also with the neighbouring atomic cores. The overlap (or interaction) will be more felt by the electrons in the outermost orbit while the inner orbit or core electron energies may remain unaffected. Therefore, for understanding electron energies in Si or Ge crystal, we need to consider the changes in the energies of the electrons in the outermost orbit only. For Si, the outermost orbit is the third orbit (n = 3), while for Ge it is the fourth orbit (n = 4). The number of electrons in the outermost orbit is 4 (2s and 2p electrons). Hence, the total number of outer electrons in the crystal is 4N. The maximum possible number of outer electrons in the orbit is 8 (2s + 6p electrons). So, out of the 4N electrons, 2N electrons are in the 2N s-states (orbital quantum number l = 0) and 2N electrons are in the available 6N p-states. Obviously, some p-electron states are empty. This is the case of well separated or isolated atoms. The maximum possible electrons in an orbit is:

Read the following text and answer the following questions on the basis of the same: Band theory of solid: Consider that the Si or Ge crystal contains N atoms. Electrons of each atom will have discrete energies in different orbits. The electron energy will be same if all the atoms are isolated, i.e., separated from each other by a large distance. However, in a crystal, the atoms are close to each other (2 Å to 3 Å) and therefore the electrons interact with each other and also with the neighbouring atomic cores. The overlap (or interaction) will be more felt by the electrons in the outermost orbit while the inner orbit or core electron energies may remain unaffected. Therefore, for understanding electron energies in Si or Ge crystal, we need to consider the changes in the energies of the electrons in the outermost orbit only. For Si, the outermost orbit is the third orbit (n = 3), while for Ge it is the fourth orbit (n = 4). The number of electrons in the outermost orbit is 4 (2s and 2p electrons). Hence, the total number of outer electrons in the crystal is 4N. The maximum possible number of outer electrons in the orbit is 8 (2s + 6p electrons). So, out of the 4N electrons, 2N electrons are in the 2N s-states (orbital quantum number l = 0) and 2N electrons are in the available 6N p-states. Obviously, some p-electron states are empty. This is the case of well separated or isolated atoms. The energy of electrons of atoms of a substance will be same if:

GRB PUBLICATION-ALCOHOL, ETHER AND EPOXY-SUBJECTIVE TYPE
  1. How many alkyl chlorides (without considering steroisomers ) would yie...

    Text Solution

    |

  2. The number of moles of Grignard reagent comsumed per mol of the compou...

    Text Solution

    |

  3. If 'X' liters of ethene would be produced when 2.62 gm of vinyl magene...

    Text Solution

    |

  4. How many monochloro compounds will give 1-butene on treatment with Mg/...

    Text Solution

    |

  5. How many moles of Grignard readent can react with one mole of followin...

    Text Solution

    |

  6. 4.6 g of a polydric alcohol was treated with an excess of methyl mag...

    Text Solution

    |

  7. Calculate number of molecules of Grignard reagent consumed by 1 molecu...

    Text Solution

    |

  8. Number of RMgX consumed per molecule with the following reactant : (...

    Text Solution

    |

  9. How many transition states are formed during formation of major produc...

    Text Solution

    |

  10. Total number of 1,2-shift's during formation of major product is :

    Text Solution

    |

  11. Total possible (a ) -Total possible (b ) is ?

    Text Solution

    |

  12. Degree of unsaturation of A is :

    Text Solution

    |

  13. Total how many organic product (s) will be formed when 4-methylcyclohe...

    Text Solution

    |

  14. How many ketones having molecular weight = 100 will react with LiAlH(4...

    Text Solution

    |

  15. How many chiral compounds of formula C(5)H(12)O will give optically in...

    Text Solution

    |

  16. (Number of organic product formed.)

    Text Solution

    |

  17. Number of chiral carbon formed in the major product.

    Text Solution

    |

  18. Write sequence of reagents used to convert pentane into3-pentanol. (...

    Text Solution

    |

  19. Consider all possible isomeric ketones including stereoisomers of rela...

    Text Solution

    |

  20. The number of hydroxy groups in Q is :

    Text Solution

    |