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
41
Hepatitis B affects the:
Answer:
Liver
Hepatitis B is a viral infection that causes liver inflammation. It can lead to cirrhosis, liver failure, or cancer. Vaccination provides effective protection.
42
Cataract occurs due to:
Answer:
Opacity of lens
Cataracts develop when the eye’s lens becomes cloudy. This reduces vision and may lead to blindness if untreated. Surgery is the most effective treatment.
43
Beri beri results from:
Answer:
Use of milled rice (lack of vitamin B1)
Beri beri is caused by a deficiency of thiamine (vitamin B1). Polished rice lacks this essential nutrient. Symptoms include muscle weakness, nerve damage, and heart failure.
44
Parkinson’s disease affects the:
Answer:
Brain
Parkinson’s is a neurodegenerative disorder caused by the loss of dopamine-producing neurons. It leads to tremors, stiffness, and movement problems. It usually occurs in older adults.
45
The BCG vaccine is used against:
Answer:
Tuberculosis
The BCG (Bacillus Calmette-Guérin) vaccine provides immunity against tuberculosis. It is given to infants in countries where TB is prevalent. It does not guarantee full protection but reduces severe forms of TB.
46
Dialysis is a treatment for:
Answer:
Kidney failure
Dialysis artificially removes waste and excess fluid from the blood when kidneys fail. It helps maintain electrolyte balance and prevents toxin buildup. Patients may undergo hemodialysis or peritoneal dialysis.
47
ECG is used to diagnose ailments of the:
Answer:
Heart
An electrocardiogram (ECG) records the electrical activity of the heart. It detects arrhythmias, heart attacks, and other heart conditions. It is a non-invasive and widely used diagnostic tool.
48
Bronchitis is a disease affecting the:
Answer:
Respiratory tract
Bronchitis is inflammation of the bronchial tubes, which carry air to the lungs. It leads to coughing, mucus production, and breathing difficulty. It can be acute (short-term infection) or chronic (long-term condition).
49
Which of the following is a fungal disease?
Answer:
fungal disease?
Ringworm is a skin infection caused by dermatophyte fungi, not worms. It appears as red, circular, itchy patches. Antifungal creams and hygiene help cure and prevent it.
50
Lockjaw, or difficulty in opening the mouth, is a symptom of:
Answer:
Tetanus
Tetanus is caused by *Clostridium tetani* bacteria, which produce toxins affecting the nervous system. Symptoms include muscle stiffness and lockjaw. Vaccination (TT) is the best prevention.