General Science/Everyday Science MCQs
Topic Notes: General Science/Everyday Science
MCQs and preparation resources for competitive exams, covering important concepts, past papers, and detailed explanations.
Plato
- Biography: Ancient Greek philosopher (427–347 BCE), student of Socrates and teacher of Aristotle, founder of the Academy in Athens.
- Important Ideas:
- Theory of Forms
- Philosopher-King
- Ideal State
51
Narrowing of the bronchial tubes due to spasms is known as:
Answer:
Asthma
Asthma is a chronic condition in which airway muscles tighten, making breathing difficult. It is often triggered by allergens, infections, or exercise. Inhalers and medications help control symptoms.
52
Pyorrhoea is a disease affecting the:
Answer:
Gums
Pyorrhoea is a gum infection that leads to pus discharge, swelling, and loosening of teeth. It is caused by poor oral hygiene and bacterial growth. Regular brushing and dental care prevent this condition.
53
Typhoid and cholera are typical examples of:
Answer:
Water-borne diseases
Both typhoid (caused by *Salmonella typhi*) and cholera (caused by *Vibrio cholerae*) spread through contaminated water. They are common in areas with poor sanitation. Preventive measures include clean drinking water and hygiene practices.
54
Which of the following diseases is not water-borne?
Answer:
Influenza
Influenza is caused by a virus that spreads through airborne droplets, not water. In contrast, cholera, typhoid, and amoebiasis are spread through contaminated water or food. This distinction is key in public health interventions.
55
Rickets is a disease that mainly affects:
Answer:
disease that mainly affects:
Rickets occurs due to a deficiency of vitamin D, calcium, or phosphate. It leads to soft, weak bones, bowed legs, and skeletal deformities in children. Adequate sunlight exposure and diet help prevent it.
56
Mumps is caused by which type of organism?
Answer:
Virus
Mumps is a viral infection that primarily affects the salivary glands, causing swelling and pain. It spreads through respiratory droplets and close contact. Vaccination (MMR) is the most effective prevention.
57
Trachoma is a disease affecting which part of the body?
Answer:
Eyes
Trachoma is a bacterial eye infection caused by *Chlamydia trachomatis*. It is one of the leading causes of preventable blindness worldwide. Poor sanitation and hygiene are major risk factors.
58
Deficiency of which nutrient in the human diet leads to anaemia?
Answer:
Iron
Iron is a key component of hemoglobin in red blood cells, which carries oxygen. A deficiency leads to anaemia, characterized by fatigue, weakness, and pale skin. It can be treated with iron-rich foods and supplements.