Irrigation Systems — Set 4
Indian Agriculture · सिंचाई प्रणाली · Questions 31–40 of 160
What is the role of micro-irrigation in modern agriculture?
Correct Answer: A. To provide precise water delivery with minimal wastage for increased efficiency
The correct answer is To provide precise water delivery with minimal wastage for increased efficiency. Micro-irrigation includes drip and sprinkler systems that deliver precise amounts of water directly to plants with minimal wastage. This technology improves irrigation efficiency to 80-95%, reduces water consumption, increases crop yields, saves labor, and is economically beneficial for farmers adopting sustainable agriculture. This topic is frequently tested in competitive examinations such as RRB NTPC, SSC, and UPSC.
Which river is the longest in India?
Correct Answer: A. Ganges River
The Ganges River is the longest river in India at approximately 2,520 kilometers. It flows through the Northern Plains and the Ganges Delta, supporting millions of people and providing irrigation for vast agricultural areas. The Ganges also has immense religious and cultural significance in India.
What is the purpose of mulching in agriculture?
Correct Answer: A. To retain soil moisture and reduce water evaporation
The correct answer is To retain soil moisture and reduce water evaporation. Mulching involves covering the soil around plants with organic or inorganic material to retain soil moisture, regulate soil temperature, suppress weed growth, and prevent soil erosion. It reduces water evaporation by 20-70%, improving irrigation efficiency and reducing the need for frequent watering. This topic is frequently tested in competitive examinations such as RRB NTPC, SSC, and UPSC.
Which dam is the largest by storage capacity in India?
Correct Answer: A. Indira Sagar Dam
Indira Sagar Dam, built on the Narmada River, has the largest storage capacity among Indian dams. It stores water in a massive reservoir that provides irrigation, hydroelectric power, and drinking water. The dam is crucial for agricultural development in Central India.
What is the Pradhan Mantri Krishi Sinchayee Yojana (PMKSY) primarily focused on?
Correct Answer: A. Improving irrigation efficiency and water use in agriculture
The correct answer is Improving irrigation efficiency and water use in agriculture. PMKSY is a central government scheme launched to increase irrigation efficiency and agricultural productivity through targeted investments in micro-irrigation, water-saving technologies, and watershed management. It aims to ensure 'every field gets water' and promote sustainable water use in agriculture. This topic is frequently tested in competitive examinations such as RRB NTPC, SSC, and UPSC.
What is the Cauvery River dispute primarily about?
Correct Answer: A. Sharing of river water between Karnataka, Tamil Nadu, and other states
The correct answer is Sharing of river water between Karnataka, Tamil Nadu, and other states. The Cauvery River dispute is a long-standing interstate water-sharing conflict between Karnataka, Tamil Nadu, and other states. The dispute revolves around the allocation of Cauvery waters for irrigation and other purposes, highlighting challenges in inter-state water management in India. This topic is frequently tested in competitive examinations such as RRB NTPC, SSC, and UPSC.
What is the primary benefit of rainwater harvesting in dry regions?
Correct Answer: A. To store water for use during dry seasons and reduce water scarcity
The correct answer is To store water for use during dry seasons and reduce water scarcity. In dry regions with low rainfall and high evaporation, rainwater harvesting is crucial for storing water during monsoon for use in dry seasons. It helps reduce dependency on groundwater extraction, prevents water scarcity, sustains agricultural activities, and improves overall water security. This topic is frequently tested in competitive examinations such as RRB NTPC, SSC, and UPSC.
Which is a gravity irrigation system?
Correct Answer: A. Canal irrigation
The correct answer is Canal irrigation. Canal irrigation is a gravity system where water flows naturally from a higher source (river or dam) to lower agricultural fields through canals. No pumping is required as gravity provides the motive force, making it economical and widely used in plains with suitable topography for water flow. This topic is frequently tested in competitive examinations such as RRB NTPC, SSC, and UPSC.
What is the purpose of a terrace in agriculture?
Correct Answer: A. To reduce soil erosion and water runoff on slopes
Terraces are stepped levels cut into hillsides to reduce soil erosion and slow water runoff on slopes. They trap water, increase soil moisture retention, prevent soil loss, and create level surfaces for cultivation. Terracing is a traditional practice particularly important in hilly agricultural regions.
Which of the following states has the most extensive drip irrigation network?
Correct Answer: A. Karnataka
The correct answer is Karnataka. Karnataka has been a pioneer in adopting drip irrigation technology in India, particularly for sugarcane, fruits, and vegetables. The state government actively promotes micro-irrigation through subsidies and awareness programs, making it a leader in efficient water management for agriculture. This topic is frequently tested in competitive examinations such as RRB NTPC, SSC, and UPSC.