471. The solar radiation coming to Earth is called-
1. Radiant energy
2. Insolation
3. Sunshine
4. Terrestrial radiation
Option “2” is correct. Insolation is the solar radiation that reaches the earth’s surface. It is measured by the amount of solar energy received per square centimetre per minute.Insolation affects temperature. The more the insolation, the higher the temperature.
472. How does the Sun get its energy?
1. From gravitational pressure
2. From nuclear fission
3. From nuclear fusion
4. Due to attraction from earth
Option “3” is correct. The Nuclear Fusion Reaction is the basis on which sun releases light and heat. Inside the Sun, this process begins with protons which is simply a lone hydrogen nucleus and through a series of steps, these protons fuse together and are turned into helium. This fusion process occurs inside the core of the Sun.
Option “2” is correct. Cosmology is the branch of physics and astrophysics that deals with the study of the physical origins and evolution of the Universe. It also includes the study of the nature of the Universe on a large scale.
Option “3” is correct. The Sun is the star at the center of the Solar System. It is a nearly perfect sphere of hot plasma, with internal convective motion that generates a magnetic field via a dynamo process. Itโs diameter is around 14lakh kms.
475. Major iron and Steel industries are located in the plateau of-
1. Deccan
2. Malwa
3. Telangana
4. Chhotangpur
Option “4” is correct. Chota Nagpur, plateau in eastern India, in northwestern Chhattisgarh and central Jharkhand states. The Chota Nagpur area has the most valuable concentration of mineral resources in India. It is famous for coal reserve and iron and steel industries.
476. Which of the following rivers is not the tributary of Yamuna?
1. Chambal
2. Betwa
3. Ken
4. Gandak
Option “4” is correct. The Kali Gandaki or Gandaki River is one of the major rivers of Nepal and a left bank tributary of the Ganges in India. It is also called Krishna Gandaki in Nepal.
477. Which one of the following soils is suitable for cotton production?
1. Regur
2. Red
3. Bhangar
4. Khadar
Option “1” is correct. Black soil is a rich soil that is good for crops like cotton. It is found in various places around the world. It is most abundantly found in western central India.
478. Kaziranga Wildlife Sanctuary is in the state of-
1. Assam
2. Tamil Nadu
3. Uttar Pradesh
4. Kerala
Option “1” is correct. Kaziranga Wildlife Sanctuary is in the state of Assam.
479. The only National Park where Kashmiri stag is found is-
1. Kanha
2. Dachigam
3. Manas
4. Nanda devi
Option “2” is correct. Dachigam National Park is located 22 kilometers from Srinagar, Jammu and Kashmir. It covers an area of 141 square kilometers. It is only National Park where Kashmiri Stag is found.
480. Which one of the following is the highest gravity dam in the world?
1. Beas Dam
2. Nangal Dam
3. Bhakra Dam
4. Hirakud Dam
Option “3” is correct. Bhakra Dam is a concrete gravity dam on the Sutlej River in Bilaspur, Himachal Pradesh in northern India. The dam forms the Gobind Sagar reservoir.The dam, located at a gorge near the (now submerged) upstream Bhakra village in Bilaspur district of Himachal Pradesh . The dam, at 741 ft (226 m), is one of the highest gravity dams in the world
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