This is the Day-15 questions of the CAF Revision plan for prelims. The questions are based on the syllabus as provided in the schedule. Aspirants are requested to go through the detailed CAF strategy to understand the need of the UPSC prelims and to prepare well for the same. Attempt the questions honestly. The key answers and explanations of this test will be live at 9.00pm. The maximum time to attempt the 20 questions is 25 minutes.
Q.1) Consider the following statements about origin of the universe.
- Big Bang Theory is also called expanding universe hypothesis.
- Edwin Hubble, in 1920, provided evidence that the universe is expanding.
- According all matter forming the universe existed in one place in the form of a “tiny ball” (singular atom)
Which of the above statements is/are correct?
(a) 1 and 2
(b) 1 and 3
(c) 2 and 3
(d) 1, 2 and 3
Q.2) Consider the following statements.
Assertion (A): The outer planets are also called as Jovian or Gas Giant planets.
Reason (R): The solar winds were not all that intense to cause removal of gases from the Jovian planets.
In the context of the statements above, which of these is true?
a) A and R both are true, and R is the correct explanation for A.
b) A and R both are true, and R is the NOT the correct explanation for A.
c) A is correct, R is incorrect.
d) A and R both are incorrect.
Q.3) Consider the following statements.
- Saturn has the largest number of natural satellites in the solar system.
- Earth has the highest density among the solar system planets.
Which of the above statements is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) None
Q.4) Consider the following statements.
- The sidereal day of earth is shorter than the stellar day of earth.
- Earth’s rotation is slowing slightly with time.
Which of the above statements is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) None
Q.5) Consider the following statements:
- The Earth’s magnetic field has reversed every few hundred thousand years.
- When the Earth was created more than 4000 million years ago, there was 54% oxygen and no carbon dioxide.
- When living organisms originated, they modified the early atmosphere of the Earth.
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
Q.6) The terms ‘Event Horizon’, ‘Singularity’, ‘String Theory’ and ‘Standard Model’ are sometimes seen in the news in the context of
(a) Observation and understanding of the Universe
(b) Study of the solar and the lunar eclipses
(c) Placing satellites in the orbit of the Earth
(d) Origin and evolution of living organisms on the Earth
Q.7) Different seasons are formed because
(a) Sun is moving around the earth
(b) Of revolution of the earth around the sun on its orbit
(c) Of rotation of the earth around its axis
(d) All of the above
Q.8) Consider the following statements.
Assertion: The same side of the moon is always seen from the earth.
Reason: The moon rotates on its axis once in each orbital revolution.
(a) If both A and R are true but R is not the reason for A
(b) If both A and R are true but R is the reason for A
(c) If neither A nor R is correct
(d) If A is correct but R is wrong
Q.9) Seasons on the Earth are caused due to
(a) The elliptical orbit of the Earth
(b) Alteration/change in the speed of revolution of the Earth
(c) Inclination of the Earth on its axis of rotation
(d) Differences in the amount of energy received from the Sun.
Q.10) The speed of revolution of the earth in its orbit round the sun is
(a) Same throughout the year
(b) Greatest when the earth is nearest to the sun
(c) Greatest when the earth is farthest from the sun
(d) Least when the earth is nearest to the sun
Q.11) On a half-moon night the angle between the moon and the sun when measured from earth is about
(a) 45°
(b) 60°
(c) 900
(d) 1800
Q.12) Consider a specific point on the surface of the earth (say, the city of Delhi). The temperature at a given time of day (say, 12.00 noon) will in general be higher in summer than in winter. This is because
(a) the earth is closer to the sun in summer than in winter
(b) sun-rays falling on the earth are inclined more towards the surface of the earth in winter
(c) evaporation of water from atmospheric precipitation occurring in winter alone
(d) the axis of the earth is inclined more towards the sun in winter
Q.13) The length of its day and the tilt of its axis are almost identical to those of the earth’. This is true of
(a) Uranus
(b) Neptune
(c) Saturn
(d) Mars
Q.14) Barak 8 missile was often in news. Consider the following statements about it
- It is jointly developed by India and Israel.
- It is a hypersonic missile.
- It can do Simultaneous Engagements on multiple targets in all weather conditions.
Choose the correct answer from the codes given below
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) All the above
Q.15) Consider the following statements about Carbon pools.
- A system that has the capacity only to store carbon.
- The Marrakesh Accords recognize five main carbon pools or reservoirs in forests: Above-ground biomass, belowground biomass, dead wood, litter and soil organic matter.
Choose the correct answer from the codes given below
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) None
Q.16) Government recently launched an integrated environmental management system named ‘PARIVESH’. Consider the following statements about it.
- It gives clearance for proposals to central and state governments only.
- It gives clearance seeking Environment, Forest, Wildlife and CRZ only.
Choose the correct answer from the codes given below
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) None
Q.17) GM foods involve taking genes (DNA) from different organisms and inserting them in food crops for the purpose of enhancing its productivity or increasing its immune power or nutritional and aesthetic values. There is a concern that this ‘foreign’ DNA can lead to risks such as toxicity, allergic reactions, and nutritional and unintended impacts. In this context consider the following statements.
- Genetic Engineering Appraisal Committee (GEAC) is to approval of living modified organisms only.
- The approval of processed foods is done by the FSSAI.
Choose the correct answer from the codes given below
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) None
Q.18) Glyphosate and Monocrotophos often in news are
(a) Biofuel ingredients
(b) Pesticides/herbicide
(c) Chemicals found after burning crop residues.
(d) None
Q.19) If you visit the Kaziranga National Park (KNP), you will see which of the following animals?
- Elephants
- wild water buffalo
- swamp deer
- one-horned rhino
Choose the correct answer from the codes given below
(a) 1 and 4 only
(b) 1, 2 and 4 only
(c) 1, 3 and 4 only
(d) All the above
Q.20) Recently reintroduce Cheetahs in Nauradehi sanctuary was in news. Consider the following statements.
- India the only country in the world to host six of the world’s eight large cats, including lions, tigers, jaguars, panthers and leopards.
- Cheetah is the flagship species of the grasslands.
Choose the correct answer from the codes given below
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) None