Which one of the following is not a characteristic of an ideal cutting tool? Good hardness and hot hardness Wear resistant Impact resistant Chemically active Thermal shock resistant

### Chemically active

## Step1: Understanding the Characteristics of an Ideal Cutting Tool### An ideal cutting tool should have certain characteristics to perform its function effectively. These characteristics include good hardness and hot hardness, wear resistance, impact resistance, and thermal shock resistance. These properties ensure that the tool can withstand the high temperatures and pressures involved in cutting processes, and resist wear and tear.## Step2: Identifying the Incorrect Characteristic### Among the given options, 'Chemically active' is not a characteristic of an ideal cutting tool. An ideal cutting tool should be chemically inert, meaning it should not react with the material being cut. A chemically active cutting tool could potentially react with the material, causing damage or affecting the quality of the cut.