Answer: (D)

Explanation: The Tanzania mainland is bounded by Uganda, Lake Victoria, and Kenya to the north, by the Indian Ocean to the east, by Mozambique, Lake Nyasa, Malawi, and Zambia to the south and southwest, and by Lake Tanganyika, Burundi, and Rwanda to the west.

Answer: (C)

Explanation:

• The PM-PRANAM scheme is designed to promote sustainable agriculture and reduce the reliance on chemical fertilizers. It encourages the adoption of alternative fertilizers and responsible fertilizer usage to protect the environment and ensure the long-term health of the agricultural sector. Hence, statement 1 is correct.
• The funding for the PM-PRANAM scheme will be sourced from the savings obtained through existing fertilizer subsidies. Half of the subsidy savings will be given to the states as a grant, which can be utilized for creating assets related to the adoption and production of alternate fertilizers at the village, block, and district levels. Hence, Statement 2 is correct.

Answer: (C)

Explanation:

• Gravitational waves are indeed ripples in the fabric of space-time that propagate outward from massive objects in the universe. These ripples are generated by the acceleration of massive objects, such as colliding black holes or neutron stars, and they travel at the speed of light. Hence, statement 1 is correct.
• Supermassive black holes, when they orbit each other and eventually merge, produce some of the strongest gravitational waves in the universe. The energy released during the merger generates gravitational waves that can be detected. Hence, statement 2 is correct.
• The Laser Interferometer Space Antenna (LISA) mission is indeed aimed at detecting gravitational waves. LISA is a planned space-based gravitational wave observatory, consisting of three spacecraft in a triangular formation, and it is designed to detect low-frequency gravitational waves. Hence, statement 3 is correct

Answer: (B)

Explanation:

• Dark matter is believed to constitute approximately 85% of the universe's total matter. It is a form of matter that does not interact with light or other electromagnetic radiation, making it difficult to detect directly. Hence, statement-I is correct.
• Dark matter is a form of matter that does not emit, absorb, or interact with electromagnetic radiation (light), making it invisible to us. However, its presence is inferred by its gravitational effects on visible matter, such as stars and galaxies. Hence, Statement-II is correct.
• Statement-II is not a direct explanation of the percentage of dark matter in the universe (Statement-I). The percentage of dark matter in the universe (approximately 85%) comes from various observations and measurements, including the cosmic microwave background radiation, the large-scale structure of the universe, and the motion of galaxies. These observations tell us about the composition of the universe, and dark matter is found to be the dominant form of matter, accounting for about 85% of the total matter content. The inference of dark matter's presence through gravitational effects (Statement-II) complements this understanding, but it doesn't directly explain the 85% value mentioned in Statement-I.

Answer: (A)

Explanation:

• The Global Forest Watch (GFW) platform was developed by the World Resources Institute (WRI). The WRI is a global research organization that focuses on addressing urgent environmental and sustainability challenges. It aims to create transformative solutions that protect the Earth and improve people's lives.
• Global Forest Watch is an online platform that provides near-real-time monitoring and analysis of global forests. It utilizes satellite imagery, remote sensing, and data from various sources to track and measure changes in forest cover and land use. The platform enables governments, NGOs, researchers, and individuals to access and analyze forest-related data to support informed decision-making, forest management, and conservation efforts.