Previous Year Question
Carcinogenic chemicals cause—
A.
Heart disease
B.
Diabetes
C.
Cancer
D.
Asthma
Correct Answer: C
Detailed Solution
A carcinogen is a substance, chemical or agent that can cause cancer or increase the risk of developing cancer. According to the U.S. National Cancer Institute, a cancer-causing substance is known as a carcinogen.
Carcinogens may contribute to cancer by damaging DNA or interfering with the normal processes of cell growth and division. Examples include certain chemicals present in tobacco smoke and other environmental carcinogens.
Important fact: Classification of a substance as a carcinogen does not mean that every person exposed to it will necessarily develop cancer. The risk also depends on the amount and duration of exposure and individual biological factors.