[MISSION 2024] RTM(Revision through MCQs)- 8 September 2023

Ans: (c)

Explanation:

• Key provisions of Forest (Conservation) Amendment Act, 2023:

Refer: https://www.insightsonindia.com/2023/09/08/amended-forest-conservation-act-imperils-the-northeast/

Ans: (b)

Explanation:

• The most important Chola paintings are those in Brihadeswara temple. The paintings were executed on the walls of the narrow passage surrounding the shrine.
• The great tradition of painting shows narrations and aspects related to Lord Shiva, Shiva in Kailash, Shiva as Tripurantaka, Shiva as Nataraja, a portrait of the patron Rajaraja and his mentor Kuruvar, dancing figures, etc.
• The paintings of Brihadeswara temple exemplify the stylistic maturity the artists evolved over the years.
• Sinuous pre-determined flow of lines, supple modelling of figures, elongation of the physiognomic features of human figures—all these represent the perfection the Chola artist had achieved during the period on the one hand and the phase of transition on the other.

Refer: https://www.insightsonindia.com/2023/09/08/shivas-nataraja-form/

Ans: (d)

Explanation:

• The correct statement is D) FTAs can lead to both economic benefits and potential challenges for participating countries.
• FTAs can lead to economic benefits such as:
  • Increased trade and investment, which can lead to job creation and economic growth.
  • Lower prices for consumers, as goods can be imported more cheaply.
  • Increased competition, which can lead to innovation and improved efficiency.

Refer: https://www.insightsonindia.com/2023/09/08/asean-summit/

Ans: (b)

Explanation:

• The correct statement is B) The human embryo undergoes implantation in the uterus approximately 2 weeks after fertilization.
• The other statements are incorrect.
• Statement A is incorrect because fertilization occurs in the fallopian tube, but the embryo does not implant in the uterus until about 2 weeks after fertilization.
• Statement C is incorrect because the human embryo does not have a functional circulatory system or well-developed organs at 4 weeks of development. These structures develop later in the pregnancy.
• Statement D is incorrect because the human embryo is typically referred to as a fetus after 8 weeks of gestation, not 12 weeks.

Refer: https://www.insightsonindia.com/2023/09/08/human-embryo/

Ans: (a)

Explanation:

• The correct answer is A) The Atlantification of the Arctic Ocean is the process of the Arctic Ocean becoming warmer and more saline, due to the influx of Atlantic Ocean water.
• Atlantification is a term used to describe the changes that are taking place in the Arctic Ocean due to the influx of warm, salty water from the Atlantic Ocean. These changes are caused by a number of factors, including:
• The melting of sea ice, which exposes the Arctic Ocean to warmer Atlantic Ocean water.
• The weakening of the Atlantic Meridional Overturning Circulation (AMOC), which is a major ocean current that helps to transport warm water from the Atlantic Ocean to the Arctic Ocean.

Refer: https://www.insightsonindia.com/2023/09/08/heatwaves-leading-to-ozone-pollution/

Ans: (a)

Explanation:’

• Option1: This statement is not entirely correct. While industrial emissions can contribute to air pollution, ground-level ozone pollution (tropospheric ozone) is mainly formed as a result of chemical reactions between oxides of nitrogen (NOx) and volatile organic compounds (VOCs) in the presence of sunlight. It is not primarily caused by industrial emissions.
• Option2: This statement is incorrect. Ground-level ozone is a harmful air pollutant. It can have adverse effects on human health, causing respiratory problems and exacerbating conditions such as asthma. It is also damaging to the environment, affecting vegetation and ecosystems.
• Option3: This statement is not accurate. Ozone pollution is typically more concentrated in urban areas due to the higher levels of traffic and industrial activity, which produce the precursor pollutants (NOx and VOCs) needed for ozone formation. Ozone levels can be lower in rural areas, although they are not immune to ozone pollution.
• Option4: This statement is correct. Ozone in the stratosphere (stratospheric ozone) plays a crucial role in protecting life on Earth by absorbing and blocking a significant portion of the sun’s harmful ultraviolet (UV) radiation. This protective layer is often referred to as the ozone layer. Decreases in stratospheric ozone, often referred to as the ozone hole, can lead to increased UV radiation at the Earth’s surface, which is harmful to living organisms.

Refer: https://www.insightsonindia.com/2023/09/08/heatwaves-leading-to-ozone-pollution/

Ans: (c )

Explanation:

Refer: https://www.insightsonindia.com/2023/09/08/one-sun-one-world-one-grid-osowog/

Ans: (a)

Explanation:

• S1: The Brahmaputra, one of the largest rivers of the world, has its origin in the
• Chemayungdung glacier of the Kailash range near the Mansarovar lake.
• The source of the Sutlej is west of the catchment area of Lake Rakshastal in Tibet, as springs in an ephemeral stream.
• S2: It descends rapidly from Tibet, forming a grand canyon, flowing 1,000 km first Eastward, then takes a horse shoe bend westward near Namche Barwa in Sadiya in the State of Arunachal Pradesh in the Pemakop region.
• S3: Lohit River is a river in Arunachal Pradesh in India. It is a tributary to the Brahmaputra River. It originates in eastern Tibet, in the Zayal Chu range and surges through Arunachal Pradsh for 200 kim, before reaching in the plains of Assam.

Refer: https://www.insightsonindia.com/2023/09/08/siang-river/

Ans: (b)

Explanation:

• Tributaries of Brahmaputra River
• Left: Dibang River, called by Dimasa tribe , Lohit River, Dhansiri River, Kolong River
• Right: Kameng River, Manas River, Beki River, Raidak River, Jaldhaka River, Teesta River, Subansiri River

Refer: https://www.insightsonindia.com/2023/09/08/siang-river/

Ans: (b)

Explanation:’

• Teesta River originates from the Pahunri glacier. Brahmaputra originates in Chemayungdung glacier of the Kailash range near the Mansarovar lake. Teesta is a tributary of Brahmaputra.
• But, Teesta flows through West Bengal and Sikkim, before going to the Bay of Bengal through Bangladesh.
• Rangeet is a tributary of the Teesta River, which is the largest river in Sikkim. It also originates in Sikkim.

Refer: https://www.insightsonindia.com/2023/09/08/siang-river/