Stellar Structure and Evolution MCQs with Answers

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Stellar Structure and Evolution Online Quiz

By presenting 3 options to choose from, Stellar Structure and Evolution Quiz which cover a wide range of topics and levels of difficulty, making them adaptable to various learning objectives and preferences. You will have to read all the given answers of Stellar Structure and Evolution Questions and Answers and click over the correct answer.

• Test Name: Stellar Structure and Evolution MCQ Quiz Practice
• Type: Quiz Test
• Total Questions: 40
• Total Marks: 40
• Time: 40 minutes

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Stellar Structure and Evolution

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1 / 40

What is the Eddington luminosity?

Maximum luminosity a star can have

Rate of energy production in a star's core

Luminosity of the Sun

2 / 40

What is the Roche limit?

Distance at which tidal forces exceed gravitational forces

Distance from the Sun where water can exist

Boundary between a star's core and envelope

3 / 40

What is the helium flash?

Fusion of helium into carbon in a star's core

Explosive ignition of helium in a red giant's core

Ejection of a star's outer layers during a nova

4 / 40

How are Type Ia supernovae different from Type II supernovae?

Type II occur in binary systems

Type Ia are caused by white dwarfs

Type Ia lack hydrogen lines in their spectra

5 / 40

What is a white dwarf made of?

Neutron-degenerate matter

Electron-degenerate matter

Proton-degenerate matter

6 / 40

What is the remnant left after a Type II supernova?

White dwarf

Neutron star or black hole

Planetary nebula

7 / 40

What is the event horizon of a black hole?

Region of intense gravitational pull

Surface where light can't penetrate

Boundary beyond which nothing can escape

8 / 40

What is the fate of a star with a mass greater than about 8 solar masses?

Supernova

Neutron Star

Black Hole

9 / 40

What process powers the Sun and other main sequence stars?

Hydrogen fusion

Helium fusion

Carbon fusion

10 / 40

What is a planetary nebula?

A shell of gas ejected by a dying star

A dense core left behind by a supernova

A cloud of gas and dust where stars form

11 / 40

What is the helium flash?

Fusion of helium into carbon in a star's core

Ejection of a star's outer layers during a nova

Explosive ignition of helium in a red giant's core

12 / 40

What prevents a star from collapsing under its own gravity?

Pressure from nuclear fusion

Dark matter

Magnetic fields

13 / 40

What is a red dwarf?

Giant star in the late stages of its life

Massive, hot, high-luminosity star

Small, cool, low-mass star

14 / 40

Which layer of a star's atmosphere is visible during a solar eclipse?

Chromosphere

Photosphere

Corona

15 / 40

What is a brown dwarf?

A small, dim star at the end of its life

A failed star that never ignites nuclear fusion

A type of supernova remnant

16 / 40

What is the Schwarzschild radius?

Radius of a neutron star

Radius of the event horizon of a black hole

Distance from the Sun to the Earth

17 / 40

What is a protostar?

A collapsing cloud of gas and dust before nuclear fusion ignites

A newborn star

A star in the late stages of its life

18 / 40

What is the role of convection in stellar interiors?

Creating magnetic fields

Transporting energy from the core to the surface

Converting hydrogen into helium

19 / 40

What is a T Tauri star?

A type of black hole

Young, pre-main sequence star with strong stellar winds

End stage of a massive star's life

20 / 40

Which force is responsible for keeping a star in hydrostatic equilibrium?

Nuclear force

Electromagnetic force

Gravity

21 / 40

What is the final stage of stellar evolution for a star like the Sun?

White Dwarf

Black Hole

Neutron Star

22 / 40

What is a nova?

Explosion of a massive star

Sudden increase in brightness of a white dwarf

Formation of a protostar

23 / 40

How does a star like the Sun eventually die?

As a white dwarf

As a black hole

As a neutron star

24 / 40

What is the primary source of energy in stars?

Nuclear Fusion

Gravitational Contraction

Nuclear Fission

25 / 40

What is a neutron star primarily composed of?

Hydrogen and helium

Neutrons

Protons and electrons

26 / 40

What is the proton-proton chain?

Method for detecting exoplanets

Nuclear fusion process in stars like the Sun

Interaction between protons in a stellar core

27 / 40

What is the approximate temperature at the core of the Sun?

5,000 K

1 million K

15 million K

28 / 40

What causes a star to become a supernova?

Loss of mass through solar wind

Core collapse or thermonuclear explosion

Accumulation of helium in the core

29 / 40

What is the role of fusion in stellar interiors?

Creating new elements through nuclear reactions

Shielding the star from radiation

Generating energy and counteracting gravitational collapse

30 / 40

What causes a supernova explosion?

Collapse of the core in a massive star

Collision with another star

Gradual loss of mass over time

31 / 40

How do stars like the Sun eventually end their lives?

As white dwarfs cooling over billions of years

As neutron stars after a gamma-ray burst

As black holes after a supernova

32 / 40

What is a pulsar?

A massive star nearing the end of its life

A rotating neutron star emitting beams of radiation

A type of black hole

33 / 40

What is the helium flash?

Fusion of helium into carbon in a star's core

Explosive ignition of helium in a red giant's core

Ejection of a star's outer layers during a nova

34 / 40

What is the CNO cycle?

A method of stellar classification

A mechanism for hydrogen burning in stars

A nuclear fusion process in massive stars

35 / 40

What is the Chandrasekhar limit?

Maximum mass for a neutron star

Minimum mass for nuclear fusion

Maximum mass for a stable white dwarf

36 / 40

What is the primary energy source in the later stages of a massive star's life?

Nuclear fusion of heavier elements

Gravitational contraction

Nuclear fission

37 / 40

What determines the main sequence lifetime of a star?

Luminosity

Mass

Temperature

38 / 40

What is the Hayashi track?

Evolutionary path of a contracting protostar

A method for measuring stellar parallax

A type of stellar wind

39 / 40

What causes a star to become a red giant?

Depletion of hydrogen fuel in the core

Accumulation of helium in the core

Loss of mass through solar wind

40 / 40

What is the dominant element in a star's core during the main sequence phase?

Helium

Hydrogen

Carbon

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