Step 1: Understanding the Concept
A silent heart attack is a silent myocardial infarction in which the heart muscle is damaged but the usual symptoms are absent or mild.
Step 2: Check the true statements
It is known as silent myocardial infarction. Extreme chest pain, hypertension and shortness of breath are not seen. The patient feels only some discomfort.
Step 3: Find the false statement
Extreme chilling is a strong symptom, which does not occur in a silent attack.
Final Answer:
The incorrect statement is that extreme chilling is experienced.
\[ \boxed{\text{(C) }\text{Extreme chilling is experienced.}} \]