# Cosmological Models MCQs with Answers

What model describes the universe as infinite in size and age, with matter distributed uniformly?

A) Steady-State Model

B) Big Bang Model

C) Oscillating Model

D) Static Model

Answer: A) Steady-State Model

Which model proposes that the universe underwent a rapid expansion from a hot, dense state?

A) Steady-State Model

B) Big Bang Model

C) Static Model

D) Eternal Inflation Model

Answer: B) Big Bang Model

What model suggests that the universe expands and contracts in a series of cycles?

A) Steady-State Model

B) Big Bang Model

C) Oscillating Model

D) Static Model

Answer: C) Oscillating Model

Which cosmological model implies that the universe has no beginning or end and is in a constant state?

A) Big Bang Model

B) Steady-State Model

C) Inflationary Model

D) Eternal Inflation Model

Answer: B) Steady-State Model

What model proposes that the universe is expanding but maintains a constant average density?

A) Steady-State Model

B) Big Bang Model

C) Static Model

D) Eternal Inflation Model

Answer: C) Static Model

Which model suggests that the universe is flat and has a critical density that determines its fate?

A) Big Bang Model

B) Steady-State Model

C) Inflationary Model

D) Friedmann-Lemaître-Robertson-Walker (FLRW) Model

Answer: D) Friedmann-Lemaître-Robertson-Walker (FLRW) Model

What model proposes that the universe experienced a rapid expansion in its early stages to explain its uniformity?

A) Steady-State Model

B) Big Bang Model

C) Inflationary Model

D) Eternal Inflation Model

Answer: C) Inflationary Model

Which model suggests that the universe is part of a multiverse, with different regions undergoing inflation?

A) Steady-State Model

B) Big Bang Model

C) Inflationary Model

D) Eternal Inflation Model

Answer: D) Eternal Inflation Model

What theory suggests that the universe’s expansion rate is accelerating due to dark energy?

A) Big Bang Model

B) Steady-State Model

C) Inflationary Model

D) Lambda Cold Dark Matter (ΛCDM) Model

Answer: D) Lambda Cold Dark Matter (ΛCDM) Model

What model incorporates both dark matter and dark energy to explain the universe’s large-scale structure?

A) Big Bang Model

B) Steady-State Model

C) Inflationary Model

D) Lambda Cold Dark Matter (ΛCDM) Model

Answer: D) Lambda Cold Dark Matter (ΛCDM) Model

Which model suggests that the universe’s large-scale structure formed from tiny quantum fluctuations during inflation?

A) Steady-State Model

B) Big Bang Model

C) Inflationary Model

D) Static Model

Answer: C) Inflationary Model

What model predicts the existence of cosmic microwave background radiation as a remnant of the Big Bang?

A) Static Model

B) Inflationary Model

C) Big Bang Model

D) Steady-State Model

Answer: C) Big Bang Model

What model describes a universe where the distribution of matter is not uniform and varies with scale?

A) Homogeneous Model

B) Steady-State Model

C) Fractal Model

D) Inhomogeneous Model

Answer: D) Inhomogeneous Model

Which model predicts that the universe will expand forever, cooling as it does so?

A) Big Bang Model

B) Steady-State Model

C) Oscillating Model

D) Heat Death Model

Answer: D) Heat Death Model

What model proposes that the universe undergoes periodic expansions and contractions indefinitely?

A) Big Bang Model

B) Steady-State Model

C) Oscillating Model

D) Heat Death Model

Answer: C) Oscillating Model

Which model suggests that the universe will eventually collapse back into a hot, dense state?

A) Big Bang Model

B) Steady-State Model

C) Oscillating Model

D) Big Crunch Model

Answer: D) Big Crunch Model

What model accounts for the accelerated expansion of the universe by introducing a cosmological constant?

A) Big Bang Model

B) Steady-State Model

C) Inflationary Model

D) Lambda Cold Dark Matter (ΛCDM) Model

Answer: D) Lambda Cold Dark Matter (ΛCDM) Model

Which model suggests that the universe expands exponentially due to the energy stored in a scalar field?

A) Steady-State Model

B) Big Bang Model

C) Inflationary Model

D) Oscillating Model

Answer: C) Inflationary Model

What model implies that the universe expands uniformly in all directions?

A) Steady-State Model

B) Big Bang Model

C) Inflationary Model

D) Spherical Model

Answer: D) Spherical Model

Which model suggests that the universe’s expansion rate slows down due to gravitational attraction?

A) Big Bang Model

B) Steady-State Model

C) Inflationary Model

D) Decelerating Model

Answer: D) Decelerating Model

What model describes a universe that has a curved geometry and expands forever?

A) Closed Model

B) Open Model

C) Flat Model

D) Spherical Model

Answer: B) Open Model

Which model predicts a universe with a finite volume but no boundaries?

A) Spherical Model

B) Flat Model

C) Closed Model

D) Open Model

Answer: C) Closed Model

What model suggests that the universe’s geometry is flat and expands forever?

A) Open Model

B) Closed Model

C) Spherical Model

D) Flat Model

Answer: D) Flat Model

Which model predicts a universe with a positive spatial curvature?

A) Open Model

B) Flat Model

C) Closed Model

D) Spherical Model

Answer: C) Closed Model

What model proposes that the universe’s density is just enough to halt its expansion after an infinite time?

A) Steady-State Model

B) Flat Model

C) Oscillating Model

D) Critical Density Model

Answer: D) Critical Density Model

Which model describes a universe that expands forever but at a rate that gradually slows down?

A) Steady-State Model

B) Accelerating Model

C) Decelerating Model

D) Critical Density Model

Answer: C) Decelerating Model

What model suggests that the universe’s expansion rate increases over time due to dark energy?

A) Accelerating Model

B) Decelerating Model

C) Critical Density Model

D) Flat Model

Answer: A) Accelerating Model

Which model implies that the universe will continue expanding indefinitely without a Big Crunch or Big Chill?

A) Steady-State Model

B) Big Bang Model

C) Eternal Expansion Model

D) Closed Model

Answer: C) Eternal Expansion Model

What model suggests that the universe has no overall curvature and expands at a constant rate?

A) Open Model

B) Closed Model

C) Flat Model

D) Steady-State Model

Answer: C) Flat Model

Which model predicts that the universe’s expansion rate slows down initially but then begins to accelerate?

A) Decelerating Model

B) Eternal Expansion Model

C) Accelerating Model

D) Oscillating Model

Answer: C) Accelerating Model

What model suggests that the universe’s expansion rate is exactly balanced by the gravitational attraction?

A) Flat Model

B) Closed Model

C) Steady-State Model

D) Critical Density Model

Answer: D) Critical Density Model

Which model implies that the universe’s expansion rate gradually slows down but never stops?

A) Eternal Expansion Model

B) Steady-State Model

C) Closed Model

D) Critical Density Model

Answer: A) Eternal Expansion Model

What model proposes that the universe expands and contracts in cycles indefinitely?

A) Closed Model

B) Oscillating Model

C) Steady-State Model

D) Flat Model

Answer: B) Oscillating Model

Which model predicts that the universe has a finite volume but no boundary or edge?

A) Closed Model

B) Flat Model

C) Open Model

D) Steady-State Model

Answer: A) Closed Model

What model suggests that the universe’s density is less than the critical density, leading to eternal expansion?

A) Flat Model

B) Closed Model

C) Open Model

D) Critical Density Model

Answer: C) Open Model

Which model suggests that the universe’s geometry is saddle-shaped and expands forever?

A) Flat Model

B) Closed Model

C) Open Model

D) Spherical Model

Answer: C) Open Model

What model implies that the universe will eventually reach a maximum size and then collapse?

A) Flat Model

B) Big Crunch Model

C) Oscillating Model

D) Steady-State Model

Answer: B) Big Crunch Model

Which model predicts that the universe has a negative spatial curvature?

A) Spherical Model

B) Closed Model

C) Open Model

D) Flat Model

Answer: C) Open Model

What model suggests that the universe’s density is greater than the critical density, leading to eventual collapse?

A) Open Model

B) Flat Model

C) Closed Model

D) Critical Density Model

Answer: C) Closed Model

Which model proposes that the universe’s expansion rate exceeds the critical rate required for recollapse?

A) Eternal Expansion Model

B) Steady-State Model

C) Oscillating Model

D) Big Crunch Model

Answer: A) Eternal Expansion Model

What model suggests that the universe’s expansion is neither accelerating nor decelerating?

A) Oscillating Model

B) Flat Model

C) Steady-State Model

D) Critical Density Model

Answer: B) Flat Model

Which model implies that the universe expands forever but at a decreasing rate?

A) Eternal Expansion Model

B) Flat Model

C) Steady-State Model

D) Decelerating Model

Answer: D) Decelerating Model

What model suggests that the universe’s density is exactly equal to the critical density?

A) Steady-State Model

B) Open Model

C) Closed Model

D) Critical Density Model

Answer: D) Critical Density Model

Which model predicts that the universe’s expansion rate gradually increases over time?

A) Steady-State Model

B) Oscillating Model

C) Accelerating Model

D) Closed Model

Answer: C) Accelerating Model

What model implies that the universe’s expansion is slowing down but will never stop?

A) Decelerating Model

B) Closed Model

C) Flat Model

D) Steady-State Model

Answer: A) Decelerating Model

Which model predicts a universe with a negative spatial curvature?

A) Spherical Model

B) Closed Model

C) Open Model

D) Flat Model

Answer: C) Open Model

What model suggests that the universe’s density is less than the critical density, leading to eternal expansion?

A) Flat Model

B) Closed Model

C) Open Model

D) Critical Density Model

Answer: C) Open Model

Which model implies that the universe’s geometry is saddle-shaped and expands forever?

A) Flat Model

B) Closed Model

C) Open Model

D) Spherical Model

Answer: C) Open Model

What model implies that the universe will eventually reach a maximum size and then collapse?

A) Flat Model

B) Big Crunch Model

C) Oscillating Model

D) Steady-State Model

Answer: B) Big Crunch Model

What model suggests that the universe’s density is greater than the critical density, leading to eventual collapse?

A) Open Model

B) Flat Model

C) Closed Model

D) Critical Density Model

Answer: C) Closed Model

Which model proposes that the universe’s expansion rate exceeds the critical rate required for recollapse?

A) Eternal Expansion Model

B) Steady-State Model

C) Oscillating Model

D) Big Crunch Model

Answer: A) Eternal Expansion Model

What model suggests that the universe’s expansion is neither accelerating nor decelerating?

A) Oscillating Model

B) Flat Model

C) Steady-State Model

D) Critical Density Model

Answer: B) Flat Model

Which model implies that the universe expands forever but at a decreasing rate?

A) Eternal Expansion Model

B) Flat Model

C) Steady-State Model

D) Decelerating Model

Answer: D) Decelerating Model

What model suggests that the universe’s density is exactly equal to the critical density?

A) Steady-State Model

B) Open Model

C) Closed Model

D) Critical Density Model

Answer: D) Critical Density Model

Which model predicts that the universe’s expansion rate gradually increases over time?

A) Steady-State Model

B) Oscillating Model

C) Accelerating Model

D) Closed Model

Answer: C) Accelerating Model

What model suggests that the universe’s expansion rate decreases over time?

A) Flat Model

B) Steady-State Model

C) Decelerating Model

D) Closed Model

Answer: C) Decelerating Model

Which model predicts a universe with a negative spatial curvature?

A) Spherical Model

B) Closed Model

C) Open Model

D) Flat Model

Answer: C) Open Model

What model suggests that the universe’s density is less than the critical density, leading to eternal expansion?

A) Flat Model

B) Closed Model

C) Open Model

D) Critical Density Model

Answer: C) Open Model

Which model implies that the universe’s geometry is saddle-shaped and expands forever?

A) Flat Model

B) Closed Model

C) Open Model

D) Spherical Model

Answer: C) Open Model