JEE Main levelNumerical answerDifficulty 2 of 3nm011
Calculate the degree of unsaturation (number of rings plus pi bonds) of a compound of molecular formula CX10HX11ClNX2OX2. Give the answer as an integer.
Numerical answer type, tolerance 0.5.
Answer: 6
DU = (2C + 2 + N - H - X)/2 with oxygen ignored. DU = (2x10 + 2 + 2 - 11 - 1)/2 = 12/2 = 6. The answer is 6.