The question asks about the primary employment sector in India before independence. To answer this, one needs to recall the economic structure of colonial India, which was predominantly agrarian.
B) Agriculture was the dominant sector in India before independence, employing approximately 70-75% of the population. This was characteristic of an underdeveloped, colonial economy.
The question asks about the primary purpose of a submarine cable project by INCOIS. To answer this, one needs to understand the mandate of INCOIS and the typical applications of submarine observation cables in oceanography.
D) Enhance long-term Indian Ocean observations. This option directly aligns with the mission of INCOIS, which focuses on ocean information and services. Submarine cables provide a stable and continuous platform for deploying sensors to collect vital oceanographic, geophysical, and environmental data over extended periods, which is essential for understanding the complex dynamics of the Indian Ocean, climate modeling, and disaster warning systems.
The pH scale is a logarithmic scale used to specify the acidity or basicity of an aqueous solution. It is inversely related to the concentration of hydrogen ions (\([\text{H}^+]\)) in the solution. A lower pH value indicates a higher concentration of \([\text{H}^+]\) ions and thus higher acidity. The relationship is defined by the formula \( \text{pH} = -\log_{10}[\text{H}^+] \).
Correct Option: C) 100 times
The question asks about the most common type of rural settlement in the Northeastern states and Northern Plains of India. Understanding the characteristics of different settlement patterns and the geographical and socio-economic factors influencing them in these regions is key to answering this question.
D) Clustered — Clustered settlements, where houses are built close together, are characteristic of fertile plains like the Northern Plains of India due to the availability of water, fertile land, and the need for community interaction and security. In many parts of the Northeastern states, especially in the valleys, similar conditions and historical factors also lead to clustered settlement patterns.
The question asks about the primary achievement of the Green Revolution in India. We need to recall the main objectives and outcomes of this agricultural initiative.
D) food grains — The Green Revolution's most notable success was in significantly boosting the production of food grains, particularly wheat and rice, leading to India's self-sufficiency in this sector.
The question asks to identify the Para-Badminton player who received the National Sports Award in January 2025. This requires knowledge of recent sports awards and their recipients, specifically in the para-sports category.
Correct Option: A) Nithya Sre Sumathy Sivan was awarded the Arjuna Award for her outstanding performance in Para-Badminton in January 2025, for the year 2024.
The question asks to identify which postulate of Dalton's atomic theory directly explains the Law of Definite Proportions. We need to understand Dalton's postulates and the Law of Definite Proportions to link them correctly.
D) Atoms combine in simple whole-number ratios to form compounds. This postulate directly explains why a given chemical compound always contains its component elements in fixed ratio by mass. If atoms combine in specific whole-number ratios, and each atom has a characteristic mass, then the mass ratio of the elements in the compound will always be constant.
The question asks about the impact of the 1991 economic reforms on agricultural exports in India. The 1991 reforms marked a significant shift in India's economic policy towards liberalization, privatization, and globalization (LPG reforms). Understanding the core principles of these reforms is key to answering this question.
Correct Option: A) Export promotion was encouraged through de-regulation. The 1991 reforms aimed at liberalizing the economy, which included reducing government controls and promoting exports across various sectors, including agriculture. De-regulation was a fundamental aspect of this strategy to make Indian goods, including agricultural products, more competitive in international markets.
The question asks to identify the ISRO mission, scheduled for May 2025, that aims to enhance India's all-weather day-and-night Earth observation capabilities. This requires knowledge of upcoming ISRO missions and their specific objectives, particularly those related to radar imaging for Earth observation.
D) EOS-09 is the correct answer. EOS-09, also known as RISAT-1A, is ISRO's next-generation Radar Imaging Satellite (RISAT) mission. It is scheduled for launch in May 2025 and is specifically designed to provide all-weather, day-and-night Earth observation capabilities using Synthetic Aperture Radar (SAR) technology, fulfilling the mission requirements.
The question asks to identify the main subsystems of the Central Processing Unit (CPU). Understanding the fundamental architecture of a CPU is key to answering this question. The CPU is the "brain" of the computer and is responsible for executing instructions and processing data.
B) Control Unit, Arithmetic Unit and Logic Unit
This option correctly identifies the primary subsystems. The "Arithmetic Unit" and "Logic Unit" are often combined into a single component called the Arithmetic Logic Unit (ALU). The Control Unit (CU) is the other major component. Together, the ALU and CU form the core of the CPU.