Which of the following statements is/are incorrect?
(i) Anthrax is a viral disease.
(ii) Pneumonia is caused by virus.
(iii) Both syphilis and AIDS are sexually transmitted diseases.
(iv) Cancer and hepatitis are non-communicable disease.

The correct option is B (i), (ii) and (iv)
Anthrax is a rare but serious illness caused by a spore-forming bacterium, Bacillus anthracis. Anthrax mainly affects livestock and wild game. Humans can become infected through direct or indirect contact with sick animals.
Pneumonia is an inflammatory condition of the lung affecting primarily the microscopic air sacs known as alveoli. It is usually caused by infection with viruses or bacteria and less commonly other microorganisms, certain drugs and other conditions such as autoimmune diseases. Typical signs and symptoms include a cough, chest pain, fever, and difficulty breathing.
Cancer is NOT contagious. A healthy person cannot catch cancer from someone who has it. There is no evidence that close contact or things like sex, kissing, touching, sharing meals, or breathing the same air can spread cancer from one person to another.
Hepatitis B is a contagious liver infection caused by the hepatitis B virus (HBV). The natural course of hepatitis B disease is different from one person to another.