Our Rajasthan Class 7 Solutions Chapter 2 Minerals and Power Resources

Our Rajasthan Class 7 Textbook Solutions Chapter 2 Minerals and Power Resources

I. Write the correct option of the following questions in given bracket:

Question 1.
Identify the group of metallic minerals:
(a) lead, copper, iron
(b) lead, marble, gypsum
(c) copper, manganese, limestone
(d) granite; copper, mica
Answer:
(a) lead, copper, iron

Question 2.
Where is Chanderia Lead Zinc Refinery Plant situated:
(a) Chittorgarh
(b) Jaipur
(c) Jaisalmer
(d) Nagaur
Answer:
(a) Chittorgarh

II. Fill in the blanks

Question 1.
__________ type of coal is the best.
Answer:
Anthracite

Question 2.
Conventional sources of energy are __________ and __________
Answer:
Coal, mineral oil and natural gas.

III. Very Short Answer Type Questions

Question 1.
Write names of non-conventional sources of energy.
Answer:
Non-conventional sources of energy are nuclear power, wind energy, biogas energy, solar energy etc.

Question 2.
Write names of two metallic minerals and associating districts.
Answer:

Iron ore: Jaipur, Sikar, Jhunjhunu.
Copper : Jhunjhunu, Alwar, Sikar.

IV. Short Answer Type Questions

Question 1.
What are minerals? Write their importance.
Answer:
Mineral: A naturally occurring substance that has a definite organization is called as mineral.
Importance of Minerals: Mineral resources are important among natural resources. The availability of minerals is vital to industrial development. Different types of minerals are found in Rajasthan. A number of items of daily use are made from the products obtained from minerals. The Aravali mountain range is most significant for production and availability of minerals in Rajasthan.

Question 2.
Write a comment on solar energy.
Answer:
Solar energy s Rajasthan is a hot region so maximum use of solar power is possible. The possibilities of producing solar energy increase due to this reason. Solar energy is used in power plants, street light, solar cooker, water heater etc. The state government gives financial aid to give impetus to use solar power on roof, power plants and household equipments. India’s largest solar park is established in Bhadla Jodhpur.

(Other Important Questions)
Multiple Choice Questions

Question 1.
It can be seen in the museum:
(a) Weapon
(b) Clothes
(c) Daily use of kings
(d) All of the above
Answer:
(d) All of the above

Question 2.
Identify the metallic mineral from the following:
(a) Limestone
(b) Iron ore
(c) Marble
(d) Coal
Answer:
(b) Iron ore

Question 3.
Which of the following is a non-metallic mineral?
(a) Gypsum
(b) Silver
(c) Manganese
(d) Copper
Answer:
(a) Gypsum

Question 4.
Which is not included in non-conventional means of energy?
(a) Nuclear Power
(b) Coal
(c) Wind energy
(d) Biogas
Answer:
(b) Coal

Fill in the blanks:

Question 1.
Different types of are found in ____________ Rajasthan.
Answer:
minerals

Question 2.
Rajasthari is the largest producer of ____________ in India.
Answer:
lead-zinc

Question 3.
There is ____________ based thermal electric plant in Giral, Banner.
Answer:
lignite

Question 4.
Minerals are formed through a ____________ process of thousands of years.
Answer:
geological.

Very Short Answer Type Questions

Question 1.
Rajasthan is called the museum of minerals. Why?
Answer:
Different types of minerals are found in Rajasthan. So, it is called as the museum of minerals.

Question 2.
What do you mean by conventional energy resources?
Answer:
Coal, mineral oil and natural gas are conventional sources of energy. They get exhausted on single usage.

Question 3.
What do you mean by non-conventional energy resources?
Answer:
Atomic energy, wind energy, solar energy, biogas energy etc. are non-conventional sources of energy. They are reusable.

Question 4.
How can mineral and energy resources be protected?
Answer:

We should stop the infinite exploitation of the minerals.
We should be careful while using energy and should prevent its wastage.

Short Answer Type Questions

Question 1.
How many types of minerals are there? Explain.
Answer:
Types of minerals are as follows:

Metallic Mineral: The mineral which contains metals are called metallic mineral. New products can be obtained by melting these minerals. These are hard and shiny.
Non-Metallic Mineral: The minerals which do not contain metals are called non metallic minerals. These are used in the original form, means no change is possible in non-matellic minerals.
Energy Mineral: The minerals from which energy can be obtained are called energy minerals, e.g., coal, petroleum, natural gas etc.

Question 2.
What is the status of Rajasthan in the field of minerals? Explain.
Answer:
Different types of minerals are found in Rajasthan. Rajasthan is also called as the museum of minerals. Rajasthan holds monopoly, in minerals such as wollastonite, Jasper, Lead-zinc etc. It is a leading producer of marble, granite, Kota stone, sandstone, silver, gypsum, rock phosphate, calcite, ball clay and copper. The Aravali mountain range is most significant for production and availability of minerals in Rajasthan.

Rajasthan is the largest producer of lead- zinc in India. Silver and cadmium is obtained as its by product. A Zinc refinery plant has been established in Debari (Udaipur) and a lead-zinc refinery plant has been established in Chanderiya, Chittorgarh.

Long Answer Type Questions

Question 1.
What do you mean by energy resources? Classify them.
Answer:
The resources that are used to generate energy are called energy resources. For example: coal, petroleum, wind, water, solar, energy, geothermal energy etc.
Energy resources can be divided into two types:
1. Conventional energy resources
2. Non-conventional energy resources

Conventional Sources of Energy:
1. Coal: Coal is of four types-anthracite, bituminous, lignite and peat. Anthracite is coal of the best quality. Lignite variety of coal is found in Rajasthan. It is found in Palana, Barsingsar (Bikaner), Kapurdi (Banner), Merta Road (Nagaur) and Jaisalmer area. There is lignite based thermal electric plant in Giral, Banner.

2. Mineral Oil and Natural Gas: The oil extracted from the natural reserves of the mineral hidden within the ground for fuel is called mineral oil. Mineral oil is found in the Jaisalmer basin, Banner Sanchore basin and Bikaner Nagaur basin whereas Natural gas reserves are found in Ghotaru, Kamlital, Tanot, Manihari Tibba, Ramgarh, Rajeshwari, Dandewala etc. This natural gas is a mixture of many gases and is the main source of fuel. There is natural gas based power house in Ramgarh in Jaisalmer, Anta in Bar an and Dhaulpur.

3. Hydel Power: Hydroelectricity power has a significant position among power resources. In Rajasthan hydroelectric power is generated and obtained from Gandhi sagar, Rana Pratap Sagar, Mahi Bajaj Sagar, Bhakra-Nangal andBeasalpur projects.

Non-Conventional Sources of Energy:

Nuclear Power: Rawatbhata Nuclear Power Plant is the second nuclear power plant of the country. It is situated in the Chittorgarh district. This is the first heavy pressurised water plant made with ultra modern art and technology.
Wind Energy: The physical location and climate of Rajasthan is most suitable for wind energy. At present, wind based power houses are established in Jaisalmer, Pratapgarh, Jodhpur and Banner districts.
Biogas energy: Biogas plants have been set up in Rajasthan, because raising livestock is the primary occupation here. Many small biogas plants have been set up in Udaipur, Jaipur along with many other districts. Grants are given by the government of Rajasthan for setting up biogas plants. It is used as a source of household energy.
Solar energy: Converting the energy received from the sun into electrical energy is called solar energy. In general, solar energy is created by converting the rays received from the sun. Solar energy is also known as solar power. Rajasthan is a hot region so maximum use of solar power is possible. India’s largest solar park is established in Bhadla Jodhpur.

Our Rajasthan Class 7 Solutions Questions and Answers