WBCS (Main) Exam Paper – III Practice Set Answers with Explanation
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Achievers 1 WBCS (Main) Exam Paper – III Practice Set Answers with Explanation 1. (b) The Indus Valley Civilization (IVC) was a rapidly in every direction because of the high Bronze Age civilization (3300–1300 BCE; temperatures present. Every so often a proton mature period 2600–1900 BCE) extending from moves close enough to a nucleus to be what today is northeast Afghanistan to Pakistan captured, and a nuclear reaction takes place. and northwest India. It flourished in the basins Only protons of extremely high energy (many of the Indus river, one of the major rivers of times the average energy in a star such as the Asia, and the Ghaggar-Hakra river. At its peak, Sun) are capable of producing nuclear events the Indus Civilization may have had a of this kind. A minimum temperature required population of over five million. Inhabitants of for fusion is roughly 10 million K. Since the the ancient Indus river valley developed new energies of protons are proportional to techniques in handicraft (carnelian products, temperature, the rate of energy production seal carving) and metallurgy (copper, bronze, rises steeply as temperature increases. lead, and tin). The Indus cities are noted for 8. (c) Asteroids are small rocky planetoids, while their urban planning, baked brick houses, comets are formed of frozen gases held elaborate drainage systems, water supply together by rocky and metallic material. systems, and clusters of large non-residential Comets show a perceptible growing tail, while buildings. Sugarcane was not cultivated. Horse asteroids do not. xÄy!‰þ¦þy¢Å and iron were not used. 9. (c) The concept of Rita was perhaps the noblest 2. (a) The correct matching pairs are – Lothal and flight of the rigvedic thoughts. The world Bhogavo, Kalibangan and Ghaggar, Ropar and takes its regular course, day follows night, Sutlej, Harappa and Ravi, Mohenjodaro and and season succeeds season because of Rita. Indus. xÄy!‰þ¦þy¢Å Man must live according to Rita Varuna was 3. (a) Because of the comet rotation around the sun, considered to be the guardian or upholder of the lighter mass of the comet is pushed away Rita. The rigvedic concept of Rita denotes due to the centrifugal force alone. When a the cosmic order or law prevailing in nature. comet comes close enough to the sun, the ice 10. (d) begins to melt at such a great pace that 11. (d) The black color on the sun is because the sublimation occurs. The sublimation of the planet behaved as a black hole during its ice that carries away dirt and rock causes the transit. A transit of Venus across the Sun takes appearance of a large white fireball with a place when the planet Venus passes directly long tail. The layer that envelopes the comet between the Sun and Earth (or another planet), is called the coma. A tail of dust particles, becoming visible against (and hence obscuring hydrogen, or ions extends more than a million a small portion of) the solar disk. During a miles away from the comet. transit, Venus can be seen from Earth as a 4. (a) This can occur only when the Sun, Earth, small black disk moving across the face of and Moon are aligned (in “SYZYGY”) exactly, the Sun. The duration of such transits is usually or very closely so, with the Earth in the measured in hours (the transit of 2012 lasted middle. Hence, a lunar eclipse can only occur 6 hours and 40 minutes). xÄy!‰þ¦þy¢Å the night of a full moon. 12. (a) The eclipse of sun occurs when the moon 5. (c) All the matches are correct which are paired comes between the sun and the earth. — Manda and Jammu and Kashmir, 13. (d) Vedic (Shrauta) yajnas are typically performed Sutkangendor and Baluchistan, Daimabad and by four Vedic priests, the hota, the adhvaryu, Maharashtra, Alamgirpur and Uttar Pradesh. the udgata and the brahman. The Hotar, 6. (b) xÄy!‰þ¦þy¢Å (priest), recites invocations and litanies drawn 7. (b) The inexhaustible source of energy of the stars from the Rigveda. The adhvaryu is the priest’s is due to conversion of Hydrogen to Helium. assistant and is in charge of the physical details In the interior of a star, the particles move of the ritual like measuring the ground, building 2 î¡ìÅ éôé 8– £z¢%Ä éôé 10 ‹y˜%ëûy!îû– 2021 xÄy!‰þ¦þy¢Å the altar etc. mentioned in the Yajurveda. The These structures were intact when Fa-hien udgatar is the chanter of hymns set to stayed in the city for three years to learn melodies (sman) drawn from the Samaveda. Sanskrit during 399 and 415 AD. Alberuni (973 The brahman is the superintendent of the entire – 1048 and Firdausi), “commissioned” by performance, and is responsible for correcting Mahmud of Ghazni to produce his monumental mistakes by means of supplementary verses commentary on Indian philosophy and culture invoking the visvedevas (pantheon of celestials Kitab fi tahqiq ma li’l-hind. “In his search for or devas). xÄy!‰þ¦þy¢Å pure knowledge, he is undoubtedly one of the 14. (b) In foreign Greek and Latin accounts, greatest minds in Islamic history.” Chandragupta is known as Sandrocottus and RomilaThapar calls him “perhaps the finest Androcottus. He became well known in the intellect of central Asia ... His observations on Hellenistic world for conquering Alexander the Indian conditions, systems of knowledge, Great’s easternmost satrapies, and for social norms, religion ... are probably the most defeating the most powerful of Alexander’s incisive made by any visitor to India.” successors, Seleucus I Nicator, in battle. 18. (b) The correctly matched pairs are: Bindusara Maurya (c. 320 BC – 272 BC) was Madanverma — Chandella xÄy!‰þ¦þy¢Å emperor of the Maurya Empire from 298 BC Vakpati — Parmara – 272 BC. During his reign, the empire Chandradeva — Gahadavala expanded southwards. The Greeks called him Ascending the throne in about 1130 AD, Amitrochates or Allitrochades – the Greek Madanvarman discarded the passive policy of transliteration for the Sanskrit word peace and fought battles to revive the lost ‘Amitraghata’ (Slayer of enemies). reputation of the Chandelas. He was a strong In the third century B.C., King Ashoka of the ruler of central Indian territory which included Maurya dynasty supported and protected the four strongholds of the Chandelas, viz. Buddhism and erected stupas and stone pillars Kalinjar, Mahoba, Ajaigarh and Khajuraho. The at sites associated with Shakyamuni Buddha. temples building activity was once again seen Dasaratha is known to have dedicated three in Khajuraho. The Dulhadeo Temple was caves in the Nagarjuni Hills to the Ajivikas. constructed during his reign, which ended Three inscriptions at the cave refer to him as around 1163 AD. Yashovarman II succeeded ‘Devanampiya Dasaratha’ Madanvarman but had a very brief reign of 15. (a) Venus is the brightest object in the sky after two years. Vakpatis Bruder and Nachfolger the sun. Venus is the second planet from the Sindhuraja Navasahasanka. The dynastic power sun in our solar system. became gradually consolidated in the period 16. (a) Uranus is a planet. Moon is a satellite. Halley of the first three rulers: Yashovigraha, is a comet. Mariner is a artificial satellite. The Mahichandra, and Chandradeva (c. 1089– Mariner program was a program conducted 1103). By the period of Chandradeva, the by the American space agency NASA in Gahadavalas had taken control of Varanasi, conjunction with Jet Propulsion Laboratory Ayodhya, Kannauj, and Indrasthaniyaka (JPL) that launched a series of robotic (modern Delhi) and had expanded interplanetary probes designed to investigate throughout... xÄy!‰þ¦þy¢Å Mars, Venus and Mercury from 1962 to 1973. 19. (a) These measurements confirm geophysical The program included a number of firsts, models that say that the temperature difference including the first planetary flyby, the first between the solid core and the mantle above pictures from another planet, the first planetary must be at least 1,500° C to explain why the orbiter, and the first gravity assist maneuver. earth has a magnetic field. The research team, 17. (a) Fa-hien – There was no provision of death which was led by Agnes Dewaele from the sentence. CEA, a French technological research Alberuni — Indian had no sense of history. organisation, used X-rays from the European Heiun-Tsang — Indian yield more than fairness Synchrotron Radiation Facility (ESRF) in required. xÄy!‰þ¦þy¢Å Grenoble, France, as a key investigating tool. Both Fa-hien and Hiuen Tsang had seen several 20. (b) A prime meridian is a meridian (a line of stone structures built by Ashoka in Pataliputra. longitude) in a geographical coordinate system Achievers 3 at which longitude is defined to be 0°. A prime 25. (a) meridian and its opposite in a 360°-system, 26. (b) Both the given statements are true but R is the 180th meridian (at 180° longitude), form not the correct explanation of A. Since Sultan a great circle. This great circle divides the Nasiruddin did not have male heir, after his sphere, e.g., the Earth, into two hemispheres. death, Balban declared himself the Sultan of The Tropic of Cancer, also referred to as the Delhi. Balban ascended the throne in 1266 at Northern Tropic, is the most northerly circle the age of sixty with the title of Sultan of latitude on the Earth at which the Sun may Ghyasuddin Balban. The nefarious idea behind appear directly overhead at its culmination. this strategy was to destroy all the legitimate The International Date Line (IDL) is an and legal claimants or successors to this office imaginary line of longitude on the Earth’s of Khalifa from the blood of the Holy Prophet.