1. The 'Big Bang Theory' is related to
A.continental drifts
B.origin of the Universe
C.origin of the Himalayas
D.eruption of Volcanoes
The 'Big Bang Theory' is related to the origin of the Universe. According to this theory, the Universe began from an initial point or singularity, which has expanded over billions of years to from the Universe as we now know it. This theory is supported by various observations, such as the cosmic microwave background radiation, the abundance of light elements and the expansion of space. Le Maitre and Gamow proposed this theory.
2. Which of the following evidences support the Big Bang Theory on the origin of the Universe?
A.Expansion of the Universe
B.Rotation of planets
C.Explosion of stars even today
D.Maintenance of steady state by the Universe
Among the given options, 'Expansion of the Universe' support the Big Bang Theory. According to Astronomers Edwin Hubble and Milton Humason, the expansion of the Universe is a key feature of the Big Bang cosmology and is a generic property of the Universe we inhabit.
3. Higgs Boson are also known as
A. Proton
B. Neutrons
C. God particles
D. Electron
Higgs Boson are also known as God particles. The Higgs Boson or Higgs particle is the fundamental force carrying particle of the Higgs field (a field that gives mass to other fundamental particles such as electrons and quarks). It was first proposed by Peter Higgs. Higgs Boson has a mass of 125 billion electron volts.
4. Consider the following statements about the Big Bang Theory.
1. It established the fact that the Earth's crust moved to fit itself into its orbit.
2. The Universe is a result of the explosion that happened approximately 18000 million years ago.
3. The matter that was thrown out of this explosion condensed into lumps called 'Galaxies'.
4. The continents gradually drifted to where they are now located.
Select the correct answer by using the codes given below.
A. 1 and 2
B. Only 2
C. 2 and 3
D. 1, 2 and 3
Statements (2) and (3) are correct about Big Bang Theory. According to Big Bang Theory, the Universe had its origin in a giant explosion about 13.7 billion years ago. The matter flung out from the explosion condensed into lumps called 'Galaxies'.
Statements 1 and 4 are incorrect because the most popular argument regarding the origin of the Universe is the Big Bang Theory. It is also called 'Expanding Universe Hypothesis'. In 1927, an astronomer named Georges Lemaitre proposed the model for the origin of the Universe known as 'Big Bang Theory'.
Edwin Hubble was the first to demonstrate the existence of other galaxies besides the Milky Way and provided evidence for Big Bang Theory.
5. Match List-I with List-II and select the correct answer by using the codes given below.
| List-I (Origin of Solar System) | List-II (Inventor) |
| A. Nebular hypothesis | 1. James Jeans |
| B. Meteorite hypothesis | 2. Moulton |
| C. Planetesimal hypothesis | 3. Lockyer |
| D. Tidal hypothesis | 4. Laplace |
Codes
| A 2 | B 1 | C 3 | D 4 |
| A 3 | B 2 | C 4 | D 1 |
| A 4 | B 3 | C 2 | D 1 |
| A 1 | B 2 | C 4 | D 3 |
The correct matching is A-4, B-3, C-2, D-1.
Nebular hypothesis was proposed by Immanuel Kant and modified by Laplace. According to this hypothesis, friction and collision of particles lead to the formation of a disk-shaped cloud (Nebula).
Meteorite hypothesis was given by Lockyer.
According to this hypothesis, two huge meteorities collided with each other, which caused high temperature, light as well as air and most part of meteorite was melted and converted into liquid and finally contracted as a mass (Nebula).
Planetesimal hypothesis was proposed by Moulton-Chamberlin. The theory states that the planets were formed by the accumulation of extremely small bits of matter (Planetesimal) that revolve around the Sun.
Tidal hypothesis was proposed by James Jeans.
James Jeans postulated that due to massive gravitational force of the intruding star, huge amount of matter was ejected from the primitive Sun, which later on became the building material of future planets.
6. Milky Way is
A.an elliptical galaxy
B.an irregular galaxy
C.a spherical galaxy
D.a spiral galaxy
The Milky Way is a spiral galaxy, that contains our solar system. The Milky Way is a barred spiral galaxy with a diameter between 100000 and 180000 light years. It is estimated that Milk Way Galaxy contains 100-400 billion stars.
7. The colour of star indicates its
A.distance from the Sun
B.lighting or glow
C.distance from the Earth
D.temperature
The colour of the star indicates its temperature. Stars emit colours of many different wavelengths but the wavelength of light, where a star's emission is concentrated is related to the star's temperature.
8. The group of stars that indicates the direction of pole is
A.Saptarishi
B.Mrig
C.Scorpio
D.Taurus
The group of stars that indicates the direction of pole is 'Saptarishi'.
Ursa Major or Great Bear is also known as 'Saptarishi' and it is a Constellation in the Northern Sky. This constellation can be used as the navigational pointer towards the place of the current Northern Pole star, Polaris in Ursa Minor. It is also called Dhruv Tara in India.
9. Which one of the following is not an astronomical object?
A.Pulsar
B.Brittle star
C.Black hole
D.Quasar
A Brittle star is not an astronomical object, but a marine animal that belongs to the class Ophiuroidea in the Phylum Echinodermata. Brittle stars have a central disk and five long slender arms that can break off easily and regenerate. These are also called serpent stars because of their snake-like movements.
Brittle stars are also a food source for many other marine animals, such as fish, crabs and birds.
10. A group of stars arranged in a particular shape is called
A.Milky Way
B.Constellation
C.Andromeda
D.Solar system
A Constellation is an area on the Celestial sphere in which a group of visible stars forms a perceived pattern or outline, typically representing an animal, mythological subject or inanimate object. Constellations are useful in assisting astronomers and navigators to locate certain stars. Ursa Major is an constellation.
11. How many Constellations are in our space?
A.87
B.88
C.89
D.90
There are 88 Constellations officially recognised by the International Astronomical Union (IAU).
The list of the Modern Constellations was adopted by the IAU in 1922. The Constellations are based on the patterns of stars that people have observed and named over centuries of human history.
Other star pattern or group are called asterisms, they are not Constellation under formal definition.
12. Which one of the following is not a natural unit of time?
A.Tropical year
B.Lunar month
C.Standard time
D.Day
Standard time is not a natural unit of time, but a convention that is based on the mean solar time at a specific longitude.
Standard time is used to synchronise clocks and calendars across different regions and countries. Standard time zones are usually 
of longitude wide, corresponding to 1 hr of difference in solar time.
13. Light year is a unit of
A.distance
B.time
C.energy
D.intensity of light
A light-year is a unit of distance, defined as the distance a light photon travels in a vacuum in 365 days. It is denoted by 'ly.' Light travels at a velocity of about 300,000 kilometers per second, so in one year, it can travel about 10 trillion kilometers.
14. One Astronomical Unit is average distance
A.between Earth and Sun
B.between Earth and Moon
C.between Jupiter and Sun
D.Pluto and Sun
One Astronomical Unit (AU) is a unit of length derived from the Earth's orbit.
It is the average distance of the Earth gets from the Sun on the long axis of the ellipse. The AU is a convenient way to express and compare distances of objects in the solar system and to carry out various astronomical calculations. It is also a fundamental component in the definition of another unit of astronomical length parsec.
The distance between the Earth and the Sun varies slightly throughout the year due to the Earth's elliptical orbit. At its closest point to the Sun, called perihelion, the Earth is about 147.1 million km away. At its furthest point from the Sun, called aphelion, the Earth is about 152.1 million km away.
15. The limit beyond which stars suffer internal collapse is called
A.Chandrashekhar limit
B. Eddington limit
C. Hoyle limit
D. Fowler limit
The Chandrasekhar limit is the maximum mass of a stable white dwarf star. If a White Dwarf star has a mass greater than the Chandrasekhar limit, it will collapse under its own gravity.
When a White Dwarf star's mass exceeds the Chandrasekhar limit, the electrons can no longer support the star against gravity. The star collapses and it may either become a Neutron star or a Black hole.
The limit gives the maximum mass of a white dwarf star, 
solar masses. It was first calculated in 1930.
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