3 ?.? CH A. 1 B. 2 D. 6 2. Which of the following is not an example of a conjuga

Question

3 ?.? CH A. 1 B. 2 D. 6 2. Which of the following is not an example of a conjugated diene? 9 A) DBCB)BEF C)ADED)BCD E) All of them 3. Which of the following is the most likely fragment ion formed at 105 A. CaHsNO* D. C8Hiot E. None of them 4. In the proton NMR spectrum for 1,4-Diemethylbenzene (p-Xylene), how many types of protons can be observed? 2 B. 3 C. 4 D. 6 E. 8 f 5. What is the structure for a compound, C4HIoO, which has the following proton NMR spectrum? Triplet at ? 1.7 (6H) and Quartet at ? 4.4 (4H) A. Diethyl ketone C. Butanol B. Diethyl ether D. 2,3-dibromobutane E. None of them

Explanation / Answer

Ans 2 : C) A D E

The conjugated dienes are the compounds that have a single bond in between two double bonds.

Such a case is not observed in the compounds mentioned in option A , D and E so they cannot be classified as conjugated dienes , while the rest others are.

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