Scientific Laws and Theories MCQs with Answer
Newton’s First Law of Motion is also known as
a) Law of Acceleration
b) Law of Inertia
c) Law of Gravitation
d) Law of Motion
Which scientific law states that for every action, there is an equal and opposite reaction?
a) Newton’s First Law
b) Newton’s Second Law
c) Newton’s Third Law
d) Law of Conservation of Energy
The Law of Conservation of Mass states that
a) Mass can be created
b) Mass can be destroyed
c) Mass cannot be created or destroyed
d) Mass depends on gravity
Which theory explains how the universe began?
a) Big Bang Theory
b) Quantum Theory
c) Evolutionary Theory
d) String Theory
What does the Theory of Evolution explain?
a) The origin of the universe
b) The process of natural selection
c) The motion of planets
d) The laws of thermodynamics
Which law states that energy cannot be created or destroyed?
a) Law of Conservation of Mass
b) Law of Conservation of Energy
c) Law of Universal Gravitation
d) Law of Reflection
The Heisenberg Uncertainty Principle is a fundamental concept in
a) Classical Mechanics
b) Quantum Mechanics
c) Relativity Theory
d) Electromagnetic Theory
Which scientific law describes the relationship between pressure and volume of a gas?
a) Boyle’s Law
b) Charles’s Law
c) Avogadro’s Law
d) Ohm’s Law
Which theory revolutionized our understanding of time and space?
a) Theory of Relativity
b) Atomic Theory
c) Cell Theory
d) Kinetic Theory of Gases
What is the fundamental idea behind Dalton’s Atomic Theory?
a) Matter is made up of small indivisible particles called atoms
b) Atoms can be divided into smaller particles
c) Matter is continuous and has no smallest unit
d) The nucleus is the heaviest part of the atom
Which law is used to calculate the force of attraction between two masses?
a) Ohm’s Law
b) Newton’s Law of Universal Gravitation
c) Archimedes’ Principle
d) Kepler’s Third Law
Which theory explains the dual nature of light?
a) Wave-Particle Duality Theory
b) Kinetic Molecular Theory
c) Quantum Chromodynamics
d) Electromagnetic Theory
Kepler’s First Law states that planetary orbits are
a) Circular
b) Parabolic
c) Elliptical
d) Straight
Which law explains why objects float in a fluid?
a) Archimedes’ Principle
b) Pascal’s Law
c) Boyle’s Law
d) Hooke’s Law
Which law relates the current, voltage, and resistance in an electric circuit?
a) Newton’s First Law
b) Ohm’s Law
c) Faraday’s Law
d) Lenz’s Law
Which scientific theory explains the properties of gases?
a) Kinetic Molecular Theory
b) Theory of Evolution
c) String Theory
d) Atomic Theory
Which law states that an object’s acceleration depends on force and mass?
a) Newton’s First Law
b) Newton’s Second Law
c) Newton’s Third Law
d) Pascal’s Law
Which law describes the bending of light when it passes from one medium to another?
a) Newton’s First Law
b) Snell’s Law
c) Hooke’s Law
d) Boyle’s Law
Which scientific law states that stress is directly proportional to strain?
a) Hooke’s Law
b) Boyle’s Law
c) Charles’s Law
d) Avogadro’s Law
Which of these laws governs the motion of planets?
a) Newton’s Law of Cooling
b) Kepler’s Laws of Planetary Motion
c) Boyle’s Law
d) Pascal’s Law
What does the Law of Conservation of Momentum state?
a) Momentum of a system remains constant if no external force acts on it
b) Momentum increases with time
c) Momentum decreases with time
d) Momentum can be created or destroyed
Which theory suggests that space and time are interwoven?
a) Theory of Relativity
b) Newtonian Mechanics
c) Dalton’s Atomic Theory
d) Germ Theory
Who proposed the Germ Theory of Disease?
a) Louis Pasteur
b) Isaac Newton
c) Albert Einstein
d) Charles Darwin
Which scientific law explains why a spinning ice skater speeds up when pulling in their arms?
a) Conservation of Angular Momentum
b) Kepler’s First Law
c) Newton’s First Law
d) Ohm’s Law
What does Avogadro’s Law state?
a) Equal volumes of gases contain the same number of molecules at constant temperature and pressure
b) Volume is inversely proportional to pressure
c) Energy cannot be created or destroyed
d) The total entropy of an isolated system can only increase
What does Pascal’s Law state?
a) Pressure applied to a confined fluid is transmitted equally in all directions
b) Energy is conserved in chemical reactions
c) The force acting on a body is equal to its mass times acceleration
d) The entropy of the universe is always increasing