Which one of the following is an isolated diene? Which one of the following dien

Question

Which one of the following is an isolated diene? Which one of the following dienes CANNOT react in Diels-Alder reaction? Which bond would show a strong, sharp absorption in the IR spectrum between 1800 and 1700 cm^-1? O-H N-H C=O C-H C_O Which bond would show a sharp absorption in the IR spectrum between 3000 and 2800 cm^-1? O-H N-H C=O C-H C_O Which functional group would show a strong, sharp absorption in the IR spectrum between 3200 and 3600 cm^-1? O-H N-H C=O C-H C_O How many different sets of equivalent protons are there in the following compound? (CH_3)_2CHBrC(CH_3)_3 three four five six Which molecule will produce one signal in its ^1H NMR spectrum? CH_3CH_2OH CH_3OCH_3 CH_3CH_2OCH_2CH_3. CH_3CHC_12 A bromoalkane shows two molecular ion peaks at m/z 122 and 124 in about 1: 1 ratio. What is the molecular formula? C_3H_7Br C_4H_9Br C_2H_5Br CH_3Br

Explanation / Answer

ANS 5) D is correct option. D is the only isolated ,rest are conjugated.

ANS 6) B is the correct option.

ANS 7) C is the correct option. as this is the most strong absorption in the given spectrum.

ANS 8) D is the correct option. Alkyl group have sharp absorption in given spectrum.

ANS 9) A is the correct option. OH is usually a broad and strong absorption near 3400 and the rest may appear as two peaks.

ANS 10) A is the correct option.

ANS 11)C is the correct option.

ANS 12) A is the correct option.the isotope pattern at 122 and 124 represent the M and M+2in a ratio 1:1.

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