Science (English Medium) Class 12 - CBSE Question Bank Solutions for Geography

The second largest country in Asia Continent in terms of area ______

Depending on the mode of occurrence and the nature of the ore, mining is of two types: Surface and underground mining. Surface mining is also known as open cast mining is the easiest and the cheapest way of mining minerals that occur close to the surface, overhead costs such as safety precautions and equipment are relatively low in this method. The output is both large and rapid. When the ore lies deep below the surface, an underground mining method (shaft method) has to be used. In this method, vertical shafts have to be sunk, from where underground galleries radiate to reach the minerals. Minerals are extracted and transported to the surface through these passages. It requires specially designed lifts, drills, haulage, vehicles, ventilation system for safe and efficient movement of people and materials. This method is risky. Poisonous gages, fires, floods, and cave-in bad to fatal accidents. The developed economies are retreating from mining, processing, and refining stages of production due to high labour costs, while the developing countries with large labour forces and striving for a higher standard of living are becoming more important. Several countries of Africa and a few of South America and Asia have over fifty per cent of the earnings from minerals alone.

Opencast mining is used for the minerals which ______

Depending on the mode of occurrence and the nature of the ore, mining is of two types: Surface and underground mining. Surface mining is also known as open cast mining is the easiest and the cheapest way of mining minerals that occur close to the surface, overhead costs such as safety precautions and equipment are relatively low in this method. The output is both large and rapid. When the ore lies deep below the surface, an underground mining method (shaft method) has to be used. In this method, vertical shafts have to be sunk, from where underground galleries radiate to reach the minerals. Minerals are extracted and transported to the surface through these passages. It requires specially designed lifts, drills, haulage, vehicles, ventilation system for safe and efficient movement of people and materials. This method is risky. Poisonous gages, fires, floods, and cave-in bad to fatal accidents. The developed economies are retreating from mining, processing, and refining stages of production due to high labour costs, while the developing countries with large labour forces and striving for a higher standard of living are becoming more important. Several countries of Africa and a few of South America and Asia have over fifty percent of the earnings from minerals alone.

Which method of mining is very risky?

Depending on the mode of occurrence and the nature of the ore, mining is of two types: Surface and underground mining. Surface mining is also known as open cast mining is the easiest and the cheapest way of mining minerals that occur close to the surface, overhead costs such as safety precautions and equipment are relatively low in this method. The output is both large and rapid. When the ore lies deep below the surface, an underground mining method (shaft method) has to be used. In this method, vertical shafts have to be sunk, from where underground galleries radiate to reach the minerals. Minerals are extracted and transported to the surface through these passages. It requires specially designed lifts, drills, haulage, vehicles, ventilation system for safe and efficient movement of people and materials. This method is risky. Poisonous gages, fires, floods, and cave-in bad to fatal accidents. The developed economies are retreating from mining, processing, and refining stages of production due to high labour costs, while the developing countries with large labour forces and striving for a higher standard of living are becoming more important. Several countries of Africa and a few of South America and Asia have over fifty percent of the earnings from minerals alone.

Developed economies are retreating from mining, processing, and refinery stages of production because ______

Depending on the mode of occurrence and the nature of the ore, mining is of two types: Surface and underground mining. Surface mining is also known as open cast mining is the easiest and the cheapest way of mining minerals that occur close to the surface, overhead costs such as safety precautions and equipment are relatively low in this method. The output is both large and rapid. When the ore lies deep below the surface, an underground mining method (shaft method) has to be used. In this method, vertical shafts have to be sunk, from where underground galleries radiate to reach the minerals. Minerals are extracted and transported to the surface through these passages. It requires specially designed lifts, drills, haulage, vehicles, ventilation system for safe and efficient movement of people and materials. This method is risky. Poisonous gages, fires, floods, and cave-in bad to fatal accidents. The developed economies are retreating from mining, processing, and refining stages of production due to high labour costs, while the developing countries with large labour forces and striving for a higher standard of living are becoming more important. Several countries of Africa and a few of South America and Asia have over fifty percent of the earnings from minerals alone.

For which reasons fear of fatal accidents remain in underground mining?

Study the given graph carefully and answer the following question:

Intra-state Migration by place of Last Residence Indicating Migration Streams India, 2011

Inter-state Migration by Place of Last Residence Indicating Migration Streams India, 2011

What is the main cause of male migration from rural to urban?

Study the given graph carefully and answer the following question:

Intra-state Migration by place of Last Residence Indicating Migration Streams India, 2011

Inter-state Migration by Place of Last Residence Indicating Migration Streams India, 2011

Which stream of migration shows the lowest trend in interstate migration?

Study the given graph carefully and answer the following question:

Intra-state Migration by place of Last Residence Indicating Migration Streams India, 2011

Inter-state Migration by Place of Last Residence Indicating Migration Streams India, 2011

Who dominates rural to rural migration in inter-state migration?

Table: India-Class-wise number of towns and cities and their population, 2011

Source: Census of India-2011 and India 2017, Ministry of Information and Broadcasting, Government of India.

Which class town has the maximum urban population?

Depending on the mode of occurrence and the nature of the ore, mining is of two types: Surface and underground mining. Surface mining is also known as open cast mining is the easiest and the cheapest way of mining minerals that occur close to the surface, overhead costs such as safety precautions and equipment are relatively low in this method. The output is both large and rapid. When the ore lies deep below the surface, an underground mining method (shaft method) has to be used. In this method, vertical shafts have to be sunk, from where underground galleries radiate to reach the minerals. Minerals are extracted and transported to the surface through these passages. It requires specially designed lifts, drills, haulage, vehicles, ventilation system for safe and efficient movement of people and materials. This method is risky. Poisonous gages, fires, floods, and cave-in bad to fatal accidents. The developed economies are retreating from mining, processing, and refining stages of production due to high labour costs, while the developing countries with large labour forces and striving for a higher standard of living are becoming more important. Several countries of Africa and a few of South America and Asia have over fifty percent of the earnings from minerals alone.

Shaft method mining is used for the minerals which ______

Depending on the mode of occurrence and the nature of the ore, mining is of two types: Surface and underground mining. Surface mining is also known as open cast mining is the easiest and the cheapest way of mining minerals that occur close to the surface, overhead costs such as safety precautions and equipment are relatively low in this method. The output is both large and rapid. When the ore lies deep below the surface, an underground mining method (shaft method) has to be used. In this method, vertical shafts have to be sunk, from where underground galleries radiate to reach the minerals. Minerals are extracted and transported to the surface through these passages. It requires specially designed lifts, drills, haulage, vehicles, ventilation system for safe and efficient movement of people and materials. This method is risky. Poisonous gages, fires, floods, and cave-in bad to fatal accidents. The developed economies are retreating from mining, processing, and refining stages of production due to high labour costs, while the developing countries with large labour forces and striving for a higher standard of living are becoming more important. Several countries of Africa and a few of South America and Asia have over fifty percent of the earnings from minerals alone.

Developing economies are increasing mining, processing, and refinery stages of production because of ______

Depending on the mode of occurrence and the nature of the ore, mining is of two types: Surface and underground mining. Surface mining is also known as open cast mining is the easiest and the cheapest way of mining minerals that occur close to the surface, overhead costs such as safety precautions and equipment are relatively low in this method. The output is both large and rapid. When the ore lies deep below the surface, an underground mining method (shaft method) has to be used. In this method, vertical shafts have to be sunk, from where underground galleries radiate to reach the minerals. Minerals are extracted and transported to the surface through these passages. It requires specially designed lifts, drills, haulage, vehicles, ventilation system for safe and efficient movement of people and materials. This method is risky. Poisonous gages, fires, floods, and cave-in bad to fatal accidents. The developed economies are retreating from mining, processing, and refining stages of production due to high labour costs, while the developing countries with large labour forces and striving for a higher standard of living are becoming more important. Several countries of Africa and a few of South America and Asia have over fifty percent of the earnings from minerals alone.

Which method of mining is less risky?

Study the given graph carefully and answer the following question:

Intra-state Migration by place of Last Residence Indicating Migration Streams India, 2011

Inter-state Migration by Place of Last Residence Indicating Migration Streams India, 2011

What is the main cause of female migration from rural to urban?

Study the given graph carefully and answer the following question:

Intra-state Migration by place of Last Residence Indicating Migration Streams India, 2011

Inter-state Migration by Place of Last Residence Indicating Migration Streams India, 2011

Which stream of migration shows the lowest trend in intra-state migration?

Study the given graph carefully and answer the following question:

Intra-state Migration by place of Last Residence Indicating Migration Streams India, 2011

Inter-state Migration by Place of Last Residence Indicating Migration Streams India, 2011

Who dominates rural to rural migration in intra-state migration?

Table: India-Class-wise number of towns and cities and their population, 2011

Source: Census of India-2011 and India 2017, Ministry of Information and Broadcasting, Government of India.

Which class town has the minimum urban population?

"The ways to measure human development are constantly being redefined". Evaluate this statement keeping in mind the attainments and shortfall in human development.

On the basis of the main source of moisture for crops, analyse the types of farming in the Indian scenario.

Read the following statements regarding open-cast mining and choose the correct option:

1. This is the cheapest way of mining.
2. The output is in large quantity.
3. It requires specially designed lifts, drills.
4. It requires special ventilation system.

Under which one of the following sectors, collection of information comes?