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
1
Is there an approved vaccine for dengue?
Answer:
No approved vaccines exist
As of now, there is no universally approved vaccine for dengue prevention. Research continues, but prevention relies on mosquito control. Some vaccines are in trial stages in limited regions.
2
Insomnia refers to:
Answer:
Inability to sleep
Insomnia is a sleep disorder marked by difficulty in falling or staying asleep. It leads to fatigue and poor concentration. Stress management and therapy help reduce symptoms.
3
Dengue fever is caused by:
Answer:
Aedes aegypti mosquito
Dengue spreads through the bite of infected *Aedes aegypti*. It causes high fever, joint pain, and rash. Prevention focuses on mosquito control.
4
Elephantiasis is caused by:
Answer:
Culex mosquito
Elephantiasis is caused by filarial worms transmitted by Culex mosquitoes. It leads to severe swelling of limbs. It is a neglected tropical disease.
5
Which of these is NOT contagious?
Answer:
Hysteria
Hysteria is a psychological disorder, not an infectious disease. Typhoid, influenza, and measles are contagious. This tests understanding of disease types.
6
Malaria mainly affects the:
Answer:
Spleen
Malaria is caused by *Plasmodium* parasites transmitted by mosquitoes. The spleen enlarges due to destruction of infected red blood cells. Fever, chills, and anemia are typical.
7
Heart attack is mainly caused by excess:
Answer:
Cholesterol
High cholesterol can block coronary arteries. This restricts blood supply to heart muscles, leading to heart attack. A healthy diet reduces risk.
8
Amnesia is related to:
Answer:
Loss of memory
Amnesia is partial or complete memory loss, often due to brain injury or trauma. It can be temporary or permanent. Different types affect short- or long-term memory.
9
Inflammation of membranes covering brain and spinal cord is:
Answer:
Meningitis
Meningitis may be bacterial or viral. Symptoms include fever, headache, and stiff neck. Vaccines help prevent some forms.
10
Inadequate blood supply to the heart is called:
Answer:
Angina
Angina is chest pain due to reduced oxygen-rich blood reaching the heart. It is a symptom of coronary artery disease. Lifestyle changes and medication help prevent complications.