RBSE Solutions Class 8 Social Science Chapter 5 Mineral and Energy Resources

Rajasthan Board Class 10 Science Textbook Questions Solved

Question 1.
1. Which of the following is the non-metallic mineral?
(a) Marble
(b) Iron
(c) Gold
(d) Copper
2. Which state is known as the 'museum of the minerals'?
(a) Jharkhand
(b) Odisha
(c) Rajasthan
(d) Karnataka
Answer:
1. (a) Marble
2. (c) Rajasthan
In simple words: Marble is a non-metallic mineral, meaning it does not contain metals. Rajasthan is called the 'museum of minerals' because many different types of minerals are found there.

🎯 Exam Tip: Remember to distinguish between metallic minerals (like iron and gold) and non-metallic minerals (like marble and coal) by their properties.

Question 2. Fill in the blanks.
1. Main hydro electricity projects of Rajasthan are .............and ............
2. The four types of coal
(a).........
(b).........
(c).........
(d).........
3. Any..........thing needs
4. Process of digging out mineral is known as............
Answer:
1. Main hydro electricity projects of Rajasthan are Chambal and Mahi Bajaj Sagar.
2. (This part of the question about four types of coal is not answered in the provided source.)
3. Any Energy thing needs.
4. Process of digging out mineral is known as Extraction.
In simple words: Big dams like Chambal and Mahi Bajaj Sagar help make electricity from water in Rajasthan. All activities need energy to happen. When we dig deep into the earth to get minerals, that process is called extraction.

🎯 Exam Tip: Know the key terms for mineral extraction and major power projects, as these are common factual recall questions.

Question 3. What is mineral? Classify minerals with examples.
Answer: A mineral is a substance that occurs naturally. It has a specific chemical makeup. The outer layer of a mineral is usually stiff and hard. Minerals are divided into two main types: metallic minerals and non-metallic minerals. They are naturally occurring, solid substances.
Classification of Minerals:
1. Metallic minerals: These are minerals from which we can get metals such as iron, gold, copper, silver, and aluminum. They are of two types:
(a) Ferrous: These minerals contain iron, for example, iron ore and manganese.
(b) Non-Ferrous: These minerals do not contain iron but may have other metals like gold, silver, or copper.
2. Non-metallic minerals: These minerals do not contain metals. Examples include coal, mica, sulfur, and potash.
In simple words: Minerals are natural, hard substances with a set chemical recipe. They are sorted into metallic (like iron, which contains metal) and non-metallic (like coal, which doesn't).

🎯 Exam Tip: When classifying, always provide clear examples for each category to show your understanding.

Question 4. Distinguish between conventional and non-conventional energy resources.
Answer: Here's how conventional and non-conventional energy resources differ:
Conventional:
1. These energy resources will run out once they are used. They cannot be replaced easily.
2. They cause environmental pollution, like air pollution, when used.
3. These are often expensive sources of energy to obtain and use.
4. Coal, petroleum, and natural gas are important examples of conventional energy sources. These resources have been widely used for a long time.
Non-conventional:
1. These resources are inexhaustible, meaning they can be renewed quickly and will not run out.
2. They do not cause environmental pollution, making them cleaner options.
3. These are often cheap or even free, as they come from nature.
4. Solar energy, wind energy, tidal energy, and nuclear energy are key non-conventional energy sources. These are becoming more popular due to their sustainability.
In simple words: Conventional energy sources are old, run out, and pollute, like coal. Non-conventional ones are new, never run out, and are clean, like solar or wind power.

🎯 Exam Tip: Focus on exhaustibility, environmental impact, and cost as key points of difference, and remember to provide examples for each type.

Question 6. Why is Rajasthan known as the museum of minerals? Write a brief note in context of mineral wealth of Rajasthan.
Answer: Rajasthan is known as the 'museum of minerals' because it has a large variety of minerals, second only to Jharkhand. Some minerals, like Volestonite and Jasper, are found only in Rajasthan. The state is rich in mineral wealth, making it unique. For example, the marble used to build the Taj Mahal, one of the seven wonders of the world, was extracted from Makrana mines in Rajasthan's Nagaur district. The following list highlights Rajasthan's significant mineral production, which supports its reputation as a mineral museum:

🎯 Exam Tip: When explaining why a region is known for something, always provide specific examples of what makes it so, like unique minerals or significant production figures.

Question 7. What do you understand by energy resources? Explain the main energy resources of Rajasthan with example.
Answer:
Meaning of Energy Resources: Any object that is still or moving needs energy to start moving or to speed up. The resources that help with these actions are known as energy resources. Many things we use every day need energy, such as vehicles like motorcycles, cars, and buses. Energy is vital for all activities.
A few examples of energy resources include solar energy, hydro-electricity, coal, natural gas, and uranium.
Main Energy Resources of Rajasthan:
* Coal: The best quality Lignite Coal is found in Palana and Barsinghsor (Bikaner), and Jalipa, Kapurdi, and Giral (Barmer).
* Mineral oil and petroleum: These are found in the Mangala and Saraswati oil fields in west Barmer. Other areas with oil and petroleum include Ghotaru, Tanot, Manihari, Tibba (Jaisalmer), Bikaner, and Jalore districts.
* Natural Gas: Jaisalmer is rich in natural gas.
* Hydro-electricity: Rajasthan has projects like Chambal and Mahi Bajaj Sagar. Many other dams also produce hydro-electricity.
* Solar Energy: Western Rajasthan is ideal for developing solar energy because it has clear skies and direct sunlight. Many solar plants have been set up, and Jaisalmer and Pratapgarh are key areas for future solar power projects.
* Atomic Energy: Rajasthan has a lot of uranium. Thorium, another atomic mineral, is found in the Monozite soil of Kerala, which is not in Rajasthan. An Atomic energy plant is located in Rawatbhata near Kota.
In simple words: Energy resources are things we use to create power for movement and daily needs. Rajasthan has many of these, like coal, oil, natural gas, river dams for electricity, lots of sunshine for solar power, and even uranium for atomic energy.

🎯 Exam Tip: When discussing regional resources, name both the type of resource and specific locations where it is found to show comprehensive knowledge.

RBSE Solutions for Class 10 Additional Questions Solved

Multiple Choice Questions

Question 1. ..........is the major producer of copper in India.
Answer: No options provided in the source for this question.
In simple words: (No answer can be provided as the question is incomplete.)

🎯 Exam Tip: Always double-check if all parts of a question, especially MCQs, are complete with options before attempting to answer.

Question 2. Sardar Sarovar Project has been constructed on the river.
(a) Beas
(b) Narmada
(c) Sutlej
(d) Mahanadi
Answer: (b) Narmada
In simple words: The Sardar Sarovar Project, a very large dam, was built on the Narmada River.

🎯 Exam Tip: It is crucial to remember important projects and the specific rivers they are built on for geography and current affairs questions.

Short Answer Type Questions

Question 1. What is mining?
Answer: Mining is the general process of extracting valuable metals or other minerals from the earth. It involves digging into the ground to take out these resources.
In simple words: Mining means digging deep into the earth to pull out useful metals and minerals.

🎯 Exam Tip: Define key terms clearly and concisely, focusing on the core activity and purpose.

Question 2. Name two Atomic minerals.
Answer: Two atomic minerals are:
1. Uranium
2. Thorium
These minerals are used to produce nuclear energy.
In simple words: Uranium and Thorium are two minerals used for making atomic power.

🎯 Exam Tip: When asked for a list, ensure you provide the exact number of items requested.

Question 3. Name the minerals which are found only in Rajasthan.
Answer: The minerals found only in Rajasthan are:
1. Volestonite
2. Jasper
These minerals are unique to the state, making it a special area for mineral resources.
In simple words: Volestonite and Jasper are special minerals that you can only find in Rajasthan.

🎯 Exam Tip: Highlighting unique resources of a region demonstrates strong knowledge of specific geographical facts.

Question 4. What are the advantages of non conventional energy resources?
Answer: The advantages of non-conventional energy resources are:
4. They are eco-friendly, meaning they do not harm the environment or cause pollution.
5. They are inexhaustible, which means they will never run out because they are naturally replenished, like sunlight or wind. These benefits make them a sustainable choice for future energy needs.
In simple words: Non-conventional energy sources are good because they don't pollute the environment and they will never run out.

🎯 Exam Tip: When discussing advantages, focus on benefits like environmental impact and sustainability, as these are key aspects of modern energy policy.