BPSC CCE Prelims
Human Health and Diseases Previous Year Questions (PYQs)

Detailed Explanation:

Levonorgestrel is a synthetic progestin hormone widely used in oral contraceptive pills and emergency contraception; it prevents pregnancy by inhibiting ovulation, thickening cervical mucus, and altering the uterine lining.

Cholecalciferol is Vitamin D3, Venlafaxine is an antidepressant, and Cetirizine is an antihistamine for allergies—none have contraceptive properties.

Detailed Explanation:

Anthrax is a bacterial disease caused by Bacillus anthracis that is commonly known as splenic fever due to the characteristic swelling and darkening of the spleen in infected animals.

It is a zoonotic disease affecting livestock and humans, occurring in three forms: cutaneous (skin), inhalation (respiratory), and gastrointestinal, transmitted through contact with infected animals or spores.

Detailed Explanation:

Female Anopheles mosquitoes rest with their bodies at an angle (approximately 45°) to the surface, with abdomen pointing upward.

Female Culex mosquitoes rest parallel to the surface with their bodies held horizontally.

This resting posture difference is a key morphological identification feature used in vector surveillance and malaria control programs.

Detailed Explanation:

Pneumonia is an acute respiratory infection that causes inflammation of the alveoli (air sacs) in the lungs, filling them with fluid or pus, leading to breathing difficulty, cough, fever, and chest pain.

It is caused by bacteria, viruses, or fungi and primarily affects the respiratory system, not nerves, blood, or skin.

Therefore, pneumonia is an infection of the lungs, making Option 4 the correct answer.