In the infrared (IR) spectrum of p-chlorobenzaldeliyde, a peak around 1690 cm¹ is lost in that of the products. This peak was representative of a(n). group. The new, large and broad

peak in the product p functional group. (functional group), i.e., The stretching frequency ol a . chlorobenzyl alcohol IR spectrum around 3300 cm 1 is indicative of a(n)