The question asks to identify the correct terms that complete the sentence describing rocks from which valuable substances can be extracted profitably. This requires understanding the definitions of 'minerals' and 'ores' in the context of geology and mining.
A) minerals, ores — This option correctly fills both blanks. Rocks from which minerals can be profitably extracted are indeed called ores.
The question asks us to evaluate two statements regarding international nuclear security and organizations. We need to determine the correctness of each statement independently and then choose the option that reflects the correct combination.
The Nuclear Security Summits (NSS) were a series of world summits aimed at preventing nuclear terrorism. They were initiated by former U.S. President Barack Obama in 2010. These summits were not held under the aegis (sponsorship or protection) of the United Nations. Instead, they were a separate, high-level political initiative involving heads of state and government from participating countries. The summits concluded in 2016. Therefore, Statement 1 is incorrect.
The International Panel on Fissile Materials (IPFM) is an independent group of experts from 17 countries, including both nuclear weapon states and non-nuclear weapon states. It is a non-governmental organization (NGO) that works to promote transparency and reduce the risks associated with fissile materials (highly enriched uranium and plutonium). It is not an official organ or part of the International Atomic Energy Agency (IAEA), which is an intergovernmental organization under the UN system. Therefore, Statement 2 is incorrect.
Correct Option: D) Neither 1 nor 2
The question asks about the regions in India where shale gas resources have been found. This is a factual question related to India's energy resources and geography. To answer correctly, one needs to know the major shale gas basins identified in India.
D) 1, 2 and 3
All three basins – Cambay, Cauvery, and Krishna-Godavari – have been identified as having significant shale gas potential and resources in India. Therefore, the option including all three is correct.
The question asks about the type of rock in which most fossils are found. We need to understand the formation processes of different rock types and how they relate to the preservation of organic remains.
Correct Option: A) Sedimentary rocks are formed from the accumulation and compaction of sediments, which often include organic remains. The process of burial under layers of sediment protects these remains from decomposition and scavenging, allowing them to mineralize and form fossils. The relatively mild conditions of temperature and pressure during sedimentary rock formation are conducive to preserving the delicate structures of organisms.
The question asks about the typical color associated with copper content in rocks. This requires knowledge of common minerals containing copper and their characteristic appearances.
Correct Option: D) Blue. Copper minerals like azurite are distinctly blue, and blue staining can often be observed in rocks containing copper due to the presence of oxidized copper compounds.
The question asks about the type of rock beds where petroleum and natural gas are typically found. Understanding the formation process of these fossil fuels is key to identifying the correct rock type.
Correct Option: C) Sedimentary rocks are formed from the accumulation and compaction of sediments, which include the organic matter that transforms into petroleum and natural gas. Their porous nature allows for the trapping of these fossil fuels.