General Knowledge MCQs
Topic Notes: General Knowledge
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
6701
What does **AC** stand for in electricity?
Answer:
Alternating Current
**AC** is an electric current which periodically reverses direction and changes its magnitude continuously with time in contrast to direct current (DC) which flows only in one direction.
6702
What does **IR** stand for in physics?
Answer:
Infrared
**Infrared** radiation is electromagnetic radiation with wavelengths longer than those of visible light.
6703
What does **UV** stand for?
Answer:
Ultraviolet
**UV** is a form of electromagnetic radiation with wavelength from 10 nm to 400 nm, shorter than that of visible light, but longer than X-rays.
6704
What does **CNS** stand for in anatomy?
Answer:
Central Nervous System
The **CNS** is the part of the nervous system consisting primarily of the brain and spinal cord.
6705
What does **WBC** stand for?
Answer:
White Blood Cell
**WBCs**, also called leukocytes, are the cells of the immune system that are involved in protecting the body against both infectious disease and foreign invaders.
6706
What does **RBC** stand for in biology?
Answer:
Red Blood Cell
**RBCs**, also called erythrocytes, are the most common type of blood cell and the vertebrate's principal means of delivering oxygen to the body tissues.
6707
What does **HIV** stand for?
Answer:
Human Immunodeficiency Virus
**HIV** is a virus that attacks the body's immune system. If not treated, it can lead to AIDS.
6708
What does **AIDS** stand for?
Answer:
Acquired Immunodeficiency Syndrome
**AIDS** is a chronic, potentially life-threatening condition caused by the human immunodeficiency virus (HIV).
6709
What does **PET** stand for in medical scans?
Answer:
Positron Emission Tomography
**PET** is a functional imaging technique that uses radioactive substances known as radiotracers to visualize and measure changes in metabolic processes, and in other physiological activities.
6710
What does **CT** stand for in medical imaging?
Answer:
Computed Tomography
A **CT scan** makes use of computer-processed combinations of many X-ray measurements taken from different angles to produce cross-sectional (tomographic) images of specific areas of a scanned object.