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
4051
What is 'Plate Tectonics'?
Answer:
A scientific theory describing the large-scale motion of seven large plates and the movements of a larger number of smaller plates of Earth's lithosphere
Plate tectonics is the theory that Earth's outer shell is divided into several plates that glide over the mantle, the rocky inner layer above the core.
4052
What is a 'Molecule'?
Answer:
A group of atoms bonded together
A molecule is an electrically neutral group of two or more atoms held together by chemical bonds.
4053
What is 'Thermodynamics'?
Answer:
The branch of physics that deals with heat and temperature
Thermodynamics is a branch of physics that deals with heat, work, and temperature, and their relation to energy, entropy, and the physical properties of matter.
4054
What is 'Chromatography'?
Answer:
A method for separating the components of a mixture
Chromatography is a laboratory technique for the separation of a mixture. The mixture is dissolved in a fluid called the mobile phase, which carries it through a structure holding another material called the stationary phase.
4055
What is a 'Supernova'?
Answer:
A powerful and luminous stellar explosion
A supernova is a powerful and luminous stellar explosion. This transient astronomical event occurs during the last evolutionary stages of a massive star.
4056
What is 'Density'?
Answer:
Mass per unit volume
Density is the mass of a substance per unit volume.
4057
What is 'Symbiosis'?
Answer:
Interaction between two different organisms living in close physical association
Symbiosis is any type of a close and long-term biological interaction between two different biological organisms.
4058
What is a 'Photon'?
Answer:
A particle representing a quantum of light
A photon is a type of elementary particle. It is the quantum of the electromagnetic field including electromagnetic radiation such as light.
4059
What is 'Oxidation'?
Answer:
The loss of electrons during a reaction
Oxidation is the process when oxygen combines with an element, changing the appearance of the element. In chemical terms, it is the loss of electrons.
4060
What is an 'Ecosystem'?
Answer:
A biological community of interacting organisms and their physical environment
An ecosystem is a geographic area where plants, animals, and other organisms, as well as weather and landscape, work together to form a bubble of life.