Every question from this NCERT chapter, with a detailed explanation.
Consider the following statements about land degradation in India: 1. Over-irrigation can increase soil salinity. 2. Mining is the primary cause of land degradation in Punjab and Haryana. 3. Industrial effluents are a significant source of land degradation.
Match List I with List II and select the correct answer using the code given below: List I (Soil Type) | List II (Characteristic) A. Alluvial Soil | 1. High accumulation of kankar in lower horizons B. Black Soil | 2. Prone to erosion; develops under heavy leaching C. Laterite Soil | 3. High moisture retention capacity D. Arid Soil | 4. Formed by deposition from Himalayan river systems
Which one of the following pairs is correctly matched?
Consider the following statements regarding alluvial soils: 1. Alluvial soils are completely absent in the states of Rajasthan and Gujarat. 2. They are deposited mainly by the Indus, Ganga and Brahmaputra systems. 3. Bangar soils are younger and more fertile than Khadar soils.
Consider the following statements: 1. Black soils retain moisture due to their clayey composition. 2. Black soils become sticky when wet and are easy to plough during the monsoon. 3. Black soils are typically found in the Deccan trap region.
Which one of the following factors primarily determines the coarse texture of alluvial soil deposited in the piedmont plains such as Duars and Chos?
Consider the following statements: 1. Red soils turn yellow when they lose their moisture content. 2. Red soils owe their colour to iron compounds in crystalline rocks. 3. Red and yellow soils are confined only to Chhattisgarh and Odisha.
Consider the following statements: 1. Lateritic soils are formed under alternate wet and dry seasons. 2. Laterite soils develop mainly in areas of low rainfall and low temperature. 3. Laterite soils are generally rich in iron oxide.
Match List I with List II and select the correct answer using the code given below: List I (Land Resource Problem) | List II (State) A. Mining-induced degradation | 1. Jharkhand B. Overgrazing-related degradation | 2. Punjab C. Waterlogging and salinity | 3. Rajasthan D. Desertification risk | 4. Gujarat
Consider the following statements: 1. Agenda 21 places responsibility exclusively on national governments for achieving sustainability. 2. One major objective of Agenda 21 is to encourage local bodies to prepare their own environmental action plans. 3. Agenda 21 was adopted at the Rio Summit of 1992.
Which one of the following erosion types results in deep channels that render farmland unusable?
Which one of the following was a major outcome of the United Nations Conference on Environment and Development (Rio Earth Summit, 1992)?
Consider the following statements regarding land use in India: 1. Land use is shaped solely by physical factors like climate and soil. 2. Cultural traditions and population density also influence land use. 3. Land-use data is available for the entire geographical area of India.
In the context of land degradation in the states of Punjab, Haryana, and Western Uttar Pradesh, which human activity is the primary cause?
Which of the following pairs is correctly matched?
What does the term ‘Gross Cropped Area’ refer to in the context of Indian agriculture?
Consider the following statements: 1. Forest area in India meets the ecological benchmark recommended by the National Forest Policy (1952). 2. Forest cover supports the livelihood of millions living on forest fringes. 3. India’s forest area has shown substantial increase since 1960-61.
Consider the following statements: 1. Overgrazing contributes to land degradation in Gujarat and Rajasthan. 2. Waterlogging and salinity in Punjab are primarily caused by deforestation. 3. Mining is the main cause of land degradation in the Gangetic plains.
Consider the following statements: 1. Laterite soils are acidic and low in plant nutrients. 2. Laterite soils are completely unsuitable for any form of plantation agriculture. 3. Laterite soils are commonly found in Karnataka and Kerala.
Consider the following statements: 1. Soil formation is a rapid process compared to soil erosion. 2. Human activities such as terracing can reduce the rate of soil erosion. 3. Water and wind are the primary natural agents of soil erosion.
Which one of the following is classified as a non-renewable resource?
Which one of the following is highlighted as a major objective of Agenda 21?
Which one of the following states is noted for having abundant water resources but weak infrastructural development?
Which region of India is identified as being rich in cultural heritage but deficient in water and minerals?
Which soil type is found in the deltas of Mahanadi, Godavari, Krishna and Kaveri?
Which one of the following characteristics best describes the forest soils found in the snow-covered areas of the Himalayas?
Which soil type, initially unsuitable for cultivation due to high salinity and dry climate, becomes cultivable after proper irrigation?