Every question from this NCERT chapter, with a detailed explanation.
With reference to the process of evaporation in the water cycle, consider the following statements: 1. Evaporation of water can take place even in the shade. 2. Water vapour formed during evaporation carries dissolved salts with it into the atmosphere. 3. Warm air can provide the necessary heat for evaporation to occur in shaded areas. Which of the statements given above is/are correct?
Which process explains the drying of a wet surface even in the absence of direct sunlight?
Consider the following statements regarding the loss of water by plants: 1. Plants release water into the air through the process of condensation. 2. Plants release a significant amount of water into the air. 3. Transpiration plays a role in adding water vapour to the atmosphere. Which of the statements given above is/are correct?
With reference to the sources of water vapour in the atmosphere, consider the following statements: 1. Water vapour is added to the air exclusively by the evaporation of water from oceans and lakes. 2. Evaporation from water bodies is a major source of water vapour in the air. 3. Transpiration by plants does not contribute to the water vapour in the air. Which of the statements given above is/are correct?
Consider the following statements regarding the rate of evaporation: 1. Evaporation is generally a slow process. 2. Evaporation occurs at the same rate in sunlight and in the shade. 3. Heating water on a burner increases the rate of evaporation. Which of the statements given above are correct?
Which of the following processes are responsible for transferring water from the Earth's surface into the atmosphere? 1. Condensation 2. Transpiration 3. Evaporation 4. Precipitation Select the correct answer using the code given below:
With reference to the role of plants in the water cycle, consider the following statements: 1. Plants absorb water from the soil and retain all of it for food preparation. 2. Wheat plants can release a significant quantity of water into the air relative to their yield. 3. Forests and grasslands contribute to the formation of water vapour in the atmosphere. Which of the statements given above is/are correct?
Consider the following statements about the evaporation of seawater: 1. It is the primary method used by nature to separate salt from water. 2. The heat required for this evaporation comes solely from the internal heat of the ocean water. Which of the statements given above is/are correct?
With reference to the formation of clouds, consider the following statements: 1. Clouds are formed when water vapour in the air condenses at high altitudes. 2. At high altitudes, the air becomes too warm for condensation to occur. 3. Clouds are composed entirely of water vapour and not liquid droplets. Which of the statements given above is/are correct?
Which of the following phenomena is a direct result of the process of condensation?
Consider the following statements regarding the behavior of air in the atmosphere: 1. As air moves up from the surface of the earth, it generally gets cooler. 2. Cooler air at heights prevents the condensation of water vapour. 3. Water droplets in clouds fall as rain when they become too heavy to float. Which of the statements given above are correct?
What causes the formation of water droplets on the outer surface of a container filled with ice-cold water?
Consider the following statements about the water cycle: 1. It is a one-way process where water flows from land to ocean only. 2. It maintains the supply of water on land. 3. It involves the conversion of saline ocean water into freshwater vapour. Which of the statements given above is/are correct?
Which of the following is NOT a form of precipitation by which water returns to the Earth's surface?
What happens to the water that falls on land as rain and snow? 1. Most of it ultimately flows back to the oceans. 2. None of the rainwater seeps into the ground. 3. It remains permanently on the land surface to form lakes. Select the correct answer using the code given below:
With reference to groundwater, consider the following statements: 1. Groundwater is the source for many lakes. 2. Handpumps and tubewells draw water directly from nearby rivers, not groundwater. 3. The level of groundwater fluctuates based on usage and rainfall. Which of the statements given above is/are correct?
Which of the following factors negatively affects the seepage of rainwater into the ground? 1. Presence of vegetation. 2. Concrete roads and buildings. 3. Compacted soil with low permeability. Select the correct answer using the code given below:
Consider the following statements regarding the flow of rainwater: 1. In areas with little vegetation, rainwater flows away quickly. 2. Flowing rainwater has no impact on the top layer of soil. 3. Concrete surfaces increase the availability of groundwater by channeling water into drains. Which of the statements given above are correct?
The flow of river water into the oceans is a critical component of the hydrological cycle primarily because it:
Which of the following sources of water are fed by groundwater? 1. Open wells 2. Tube wells 3. Hand pumps 4. Some lakes Select the correct answer using the code given below:
Consider the following statements about the availability of water: 1. About two-thirds of the Earth is covered with water. 2. Most of the Earth's water is readily available for human consumption. 3. The water in oceans plays a crucial role in supplying fresh water through the water cycle. Which of the statements given above is/are correct?
What is the significance of snow cover in high-altitude mountains for the hydrological cycle?
Which of the following pairs is correctly matched regarding water movement? 1. Infiltration : Seepage of rainwater into the ground 2. Runoff : Water flowing into drains from concrete roads 3. Precipitation : Water falling as rain or snow Select the correct answer using the code given below:
Why does the extensive use of concrete for roads and pavements negatively impact groundwater recharge?
In the context of the hydrological cycle, the "circulation of water" primarily describes the continuous movement of water between:
Consider the following statements regarding the movement of water: 1. Water from some rivers flows into lakes. 2. All rivers ultimately drain into the ocean. 3. Rainwater is the only source of water for lakes and ponds. Which of the statements given above is/are correct?
With reference to heavy rains and floods, consider the following statements: 1. Heavy rains can lead to a rise in the water level of rivers and lakes. 2. Floods are generally beneficial for the survival of soil-dwelling animals. 3. Animals living in water can get carried away to land areas during floods and die when water recedes. Which of the statements given above is/are correct?
What is the likely consequence if it does not rain in a region for a year or more? 1. The rate of evaporation from the soil becomes zero immediately after the rains stop. 2. The groundwater level typically depletes due to lack of replenishment. 3. Ponds and wells may dry up. Select the correct answer using the code given below:
Which of the following is the primary ecological consequence of prolonged drought conditions?
During a drought, the soil continues to lose water through: 1. Evaporation 2. Transpiration, which completely stops during the day. 3. Drying up of vegetation. Select the correct answer using the code given below:
In the context of the Indian climatic pattern, the majority of annual precipitation is received during which season?
Consider the following impacts of heavy rains: 1. Heavy rains typically cause a decrease in the water levels of rivers. 2. Submergence of villages and cities. 3. Heavy rains can lead to waterlogging in low-lying areas. Which of the statements given above are correct?
Which of the following factors contribute to the decreasing availability of usable water? 1. Rising population. 2. Industries consume a negligible amount of water compared to domestic use. 3. Food production requires no water resources. Select the correct answer using the code given below:
Which of the following best describes the relationship between industrialization and water availability?
How does rapid industrialization primarily affect freshwater availability?
Consider the following statements regarding the water used for food production: 1. Water is essential for growing plants that yield fibres. 2. Paper production is a water-free process. 3. Increasing food production puts pressure on water resources. Which of the statements given above is/are correct?
Which of the following practices effectively contributes to the recharge of groundwater?
In environmental resource management, the argument for water conservation is based on which of the following realities?
Match List I with List II and select the correct answer using the code given below: List I | List II A. Evaporation | 1. Conversion of water to vapour B. Condensation | 2. Loss of water by plants C. Transpiration | 3. Seepage of water into the ground D. Infiltration | 4. Conversion of vapour to liquid droplets
Which of the following statements regarding the hydrological cycle is incorrect?
Consider the following sources of water: 1. Rivers 2. Springs 3. Ponds 4. Glaciers From which of the above do we typically draw water for drinking and irrigation?
Consider the following statements regarding the state of water: 1. Water vapour is visible to the naked eye as white smoke. 2. Steam rising from wet clothes during ironing is water vapour. 3. Water vapour is a part of the air. Which of the statements given above are correct?
With reference to the drying of wet roads after rain, consider the following: 1. The water disappears due to evaporation. 2. Evaporation occurs only in the presence of direct sunlight. 3. The water vapour formed settles immediately as dust. Which of the statements given above is/are correct?
What are the primary natural sources that sustain the flow of water in river systems?
Consider the following statements about the "Water Cycle": 1. It involves the movement of water from oceans to land and back. 2. The water cycle involves no change in the state of water. 3. It is essential for the survival of life on land. Which of the statements given above is/are correct?
Which of the following activities requires the use of water? 1. Water is strictly prohibited in the generation of electricity. 2. Making fabric from plants. 3. Cleaning utensils. Select the correct answer using the code given below:
With reference to the role of solar energy in initiating the water cycle, heated air plays a crucial role by:
Consider the following statements regarding the impact of concrete on the water table: 1. Concrete surfaces reduce the seepage of rainwater. 2. Reduced seepage has no impact on the availability of groundwater. 3. Concrete surfaces significantly increase the rate of evaporation from the soil beneath. Which of the statements given above is/are correct?
Which of the following is formed by the condensation of water vapour at high altitudes?
With reference to the "Water Cycle", consider the following statements: 1. It is a continuous process. 2. It depletes the total supply of water on land over time. 3. It involves the circulation of water between ocean and land. Which of the statements given above is/are correct?
Which of the following is NOT a likely consequence of severe flooding?