Test: Dark Matter vs Anti-Matter vs Negative Matter - UPSC MCQ

Dark energy is an unknown form of energy that causes the universe's expansion to accelerate.

Dark matter's presence is inferred from its gravitational influence on visible matter, indicating that it possesses positive mass.

Dark matter interacts only through gravity and the weak atomic force, making it challenging to detect.

Observations of spiral galaxies' rotational behavior indicate the presence of dark matter due to the higher mass needed to explain their observed velocities.

When matter and antimatter particles meet, they annihilate each other, releasing energy in the form of light.

Dark energy is hypothesized to explain the observed acceleration of the universe's expansion.

Negative matter is a hypothetical form of matter with negative mass that behaves in a manner opposite to conventional matter under gravity.

According to the standard model of cosmology, dark matter is the dominant form of matter in the universe.

Negative energy is associated with exotic matter and is a subject of ongoing scientific inquiry in relation to phenomena like wormholes and faster-than-light travel.

If dark matter were composed of antimatter, we would expect to observe gamma-ray emissions from widespread annihilation events, which has not been observed.

Dark matter and dark energy together constitute around 95.1% of the universe's total mass-energy content.

Dark matter is believed to interact only through gravity and the weak atomic force, setting it apart from ordinary matter that interacts through all four fundamental forces.

Dark energy is hypothesized to explain the observed accelerated expansion of the universe.

Baryonic matter comprises ordinary matter composed of atoms and particles found in the observable universe.

Negative matter, if it exists, would move away from objects when subjected to gravity, in contrast to conventional matter that moves toward objects.

Dark matter and dark energy are the two major hypothesized forms of non-baryonic matter in the universe.

Dark matter is called "dark" because it does not emit, absorb, or reflect light, making it challenging to detect directly.

The majority of dark matter is believed to exist in diffuse halos surrounding galaxies.

Antimatter is composed of antiparticles with properties opposite to those of normal matter's particles.

Dark energy is hypothesized to be responsible for the observed accelerated expansion of the universe, pushing galaxies apart.