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
6691
What does **TNT** stand for?
Answer:
Trinitrotoluene
**TNT** is a chemical compound with the formula C6H2(NO2)3CH3. It is a solid material used mainly as an explosive.
6692
What does **PVC** stand for?
Answer:
Polyvinyl Chloride
**PVC** is the world's third-most widely produced synthetic plastic polymer.
6693
What does **BTU** stand for?
Answer:
British Thermal Unit
The **BTU** is a traditional unit of heat; it is defined as the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit.
6694
What does **STP** stand for in chemistry?
Answer:
Standard Temperature and Pressure
**STP** is defined by IUPAC as a temperature of 273.15 K (0 °C, 32 °F) and an absolute pressure of exactly 10^5 Pa.
6695
What does **PSI** stand for in pressure measurement?
Answer:
Pounds per Square Inch
**PSI** is a unit of pressure or of stress based on avoirdupois units.
6696
What does **RPM** stand for?
Answer:
Revolutions Per Minute
**RPM** is a unit of rotational speed, the number of turns in one minute.
6697
What does **FM** stand for in radio?
Answer:
Frequency Modulation
**FM** is the encoding of information in a carrier wave by varying the instantaneous frequency of the wave.
6698
What does **AM** stand for in radio?
Answer:
Amplitude Modulation
**AM** is a modulation technique used in electronic communication, most commonly for transmitting messages with a radio carrier wave.
6699
What does **EMF** stand for?
Answer:
Electromotive Force
**EMF** is the electrical action produced by a non-electrical source. It is the energy provided per unit charge.
6700
What does **DC** stand for in electricity?
Answer:
Direct Current
**DC** is the unidirectional flow of an electric charge.