CBSE Class 10 Social Science Minerals and Energy Resources Important Questions Set 02

Objective Type Questions

Question. What occurs naturally inside the earth’s crust which has a definable internal structure ?
(a) Metals
(b) Minerals
(c) Chemicals
(d) Coal
Answer: (b)

Question. What percentage of total minerals are utilized by us ?
(a) 0.1%
(b) 0.2%
(c) 0.3%
(d) 0.4%
Answer: (c)

Question. Rocks are combinations of homogeneous substances called _______________ .
(a) Minerals
(b) Ores
(c) Limestone
(d) Metals
Answer: (a)

Question. Where are minerals generally found ?
(a) In ores
(b) Under the earth
(c) Above the Earth
(d) In rocks
Answer: (a)

Question. How many minerals are identified yet ?
(a) 1000
(b) Over 2000
(c) 3000
(d) Over 3000
Answer: (b)

Question. Igneous, metamorphic rocks and minerals may occur in the _______________ .
(a) Cracks
(b) Crevices
(c) Faults or Joints
(d) All of these
Answer: (d)

Question. In which areas sedimentary minerals are formed as a result of evaporation ?
(a) Semi-arid regions
(b) Dry regions
(c) Arid regions
(d) Moist regions
Answer: (c)

Question. In which rocks are potash salt and sodium salt formed?
(a) Sedimentary rocks
(b) Igneous rocks
(c) Metamorphic rocks
(d) None of the above
Answer: (a)

Question. Which mineral may occur as alluvial deposits ?
(a) Steel
(b) Silver
(c) Iron
(d) Aluminium
Answer: (b)

Question. Common salt, magnesium and bromine are derived from _______________ .
(a) Sea
(b) Mountains
(c) Ocean water
(d) Rivers
Answer: (c)

Question. The sources of energy used on a large scale are conventional sources of energy. (True/False)
Answer: True

Question. In India 60% of energy are obtained by commercial energy. (True/False)
Answer: True

Question. Metallic minerals occur in sedimentary rocks. (True/False)
Answer: False

Question. Anthracite coal has more than 80% carbon. (True/False)
Answer: True

Question. Biogas is obtained by the decomposition of organic matter. (True/False)
Answer: True

Question. Match the following.
Column A:
1. Coal
2. Solar energy
3. Iron, copper, silver
4. Salt
5. Charcoal
Column B:
(A) Metallic minerals
(B) Non-metallic minerals
(C) Non-conventional
(D) Conventional
(E) Non-commercial source of energy
Answer: 1. (D), 2. (C), 3. (A), 4. (B), 5. (E)

Question. Which gas plant is shown in the image?
(A) Thermal power plant
(B) Nuclear power plant
(C) Biogas power plant
(D) Solar plant
Answer: (C)

Question. Complete the following: Limestone is a rock mineral found in sedimentary rocks and is composed of ___________ .
Answer: Calcicum carbonates or calcium and magnesium carbonates.

Question. Ferrous Minerals: Manganese, Mica: ___________ .
Answer: Non-Metallic

Question. Arrange the following in the most usable source of energy in India.
i. Coal
ii. Solar energy
iii. Petroleum
iv. Geothermal energy
(A) (i)-(iv)-(iii)-(ii)
(B) (i)-(ii)-(iii)-(iv)
(C) (i)-(ii)-(iii)-(iv)
(D) (i)-(iii)-(iv)-(ii)
Answer: (C)

Question. Complete the information for Copper in the table: Mineral: Copper, Type of mineral: Non-Ferrous, State leading producer: (A) - ?, One use: (B) - ?.
Answer: (A) Rajasthan, (B) Manufacturing of electric cables.

Question. Complete the following table for Iron: Iron, Best quality ore: ?, 14 deposits are found in the belt: ?.
Answer: Best quality ore: Magnetite, 14 deposits: Durg-Bastar-Chandrapur belt

Question. Correct the following statement and rewrite: In Rajasthan, the major mica producing area is around Jaipur.
Answer: In Rajasthan, the major mica producing area is around Ajmer.

Question. Identify the type of Coal with the help of following features:

• It is a low-grade brown coal.
• It is soft with high moisture content.
• The principal reserves are in Neyveli in Tamil Nadu.

Answer: Lignite Coal

Very Short Answer Type Questions

Question. How did the Bailadila Iron ore field get its name ?
Answer: The Bailadila iron-ore field got its name from its look. The hill looks like the hump of an ox.

Question. How does mining affect the health of miners ?
Answer: In mines, there is dust and noxious fumes which is inhaled by miners and make them vulnerable to pulmonary diseases.

Question. Why is energy needed ? Write one reason.
Answer: Energy is a basic requirement for economic development. It is needed to cook, to provide light and heat, to propel vehicles and to drive machinery in industries.

Question. What is an ore ?
Answer: The term ore is used to describe an accumulation of any mineral mixed with other elements.

Question. What are rocks made up of ?
Answer: Rocks like Limestone consist of a single mineral only, but a majority of rocks consists of several minerals in varying proportions.

Question. What are veins and lodes ?
Answer: In igneous and metamorphic rocks, minerals may occur in the cracks, crevices, faults or joints. The smaller occurrences are called veins and the larger ones are called lodes.

Question. What is Rat-hole minning ?
Answer: In India, most of the mineral extraction is done by the tribal communities or individuals in the form of a long narrow tunnel known as Rat-hole minning.

Question. Which are the major iron ore belts in India ?
Answer: The major iron ore belts in India are – (i) Odisha-Jharkhand belt, (ii) Durg-Bastar-Chandrapur belt, (iii) Bellary-Chitrdurga-Chikmaglur-Tumkur and (iv) Maharashtra-Goa belt.

Question. Which state is the largest producer of manganese in India ?
Answer: Odisha is the largest producer of manganese ores in India. It accounted for one-third of the country’s total production of manganese in 2000-2001.

Question. What is the importance of aluminium ?
Answer: Aluminium is an important metal because it combines the strength of metals such as iron, with extreme lightness and also with good conductivity and great malleability.

Question. What are the properties of mica ?
Answer: Mica is a mineral made up of a series of plates or leaves. It splits easily into thin sheets. These sheets can be so thin that a thousand of such sheets can be layered into a mica sheet of a few centimetres high.

Question. Which quality of limestone is important for the cement industry ?
Answer: Limestone is found in association with rocks composed of calcium carbonates or calcium and magnesium carbonates. Thus, it is important for the cement industry and essential for smelting iron ore in the blast furnace.

Question. What are energy resources ?
Answer: The resources which are used for generating energy are known as energy resources.

Question. Which reserves of natural gas have been found in India ?
Answer: Large reserves of natural gas have been discovered in Krishna-Godavari basin. Along the west coast the reserves of the Mumbai high and allied fields are supplemented by findings in the Gulf of Cambay. Andaman and Nicobar islands are also important areas having large reserves of natural gas.

Question. Which place is the most suitable for setting up tidal energy power plant in India ?
Answer: In India, the Gulf of kutch provides ideal conditions for utilizing tidal energy. A 900 MW tidal energy power plant is set up here by the National Hydropower Corporation.

Assertion and Reasoning Based Questions

Question. Assertion : Uses of iron brought a radical change in human life.
Reason : Different kinds of tools where invented by using minerals
(a) If both assertion and reason are true and reason is the correct explanation of assertion.
(b) If both assertion and reason are true but reason is not the correct explanation of assertion.
(c) If assertion is true but reason is false.
(d) If both assertion and reason are false.
Answer: (a)

Question. Assertion : Mining activity is often called a “Killer Industry”.
Reason : Mining helps in agriculture.
(a) If both assertion and reason are true and reason is the correct explanation of assertion.
(b) If both assertion and reason are true but reason is not the correct explanation of assertion.
(c) If assertion is true but reason is false.
(d) If both assertion and reason are false.
Answer: (c)

Question. Assertion : Iron ore is the basic mineral and the backbone of India.
Reason : India is rich in good quality Iron ore.
(a) If both assertion and reason are true and reason is the correct explanation of assertion.
(b) If both assertion and reason are true but reason is not the correct explanation of assertion.
(c) If assertion is true but reason is false.
(d) If both assertion and reason are false.
Answer: (a)

Question. Assertion : Mica is a metallic mineral.
Reason : Mica mineral is the basic raw material for cement industry
(a) If both assertion and reason are true and reason is the correct explanation of assertion.
(b) If both assertion and reason are true but reason is not the correct explanation of assertion.
(c) If assertion is true but reason is false.
(d) If both assertion and reason are false.
Answer: (d)

Question. Assertion : Minerals are an indispensable part of our lives.
Reason : Minerals have a universal use, they are used to manufacture everything we use in our day to day lives.
(a) If both assertion and reason are true and reason is the correct explanation of assertion.
(b) If both assertion and reason are true but reason is not the correct explanation of assertion.
(c) If assertion is true but reason is false.
(d) If both assertion and reason are false.
Answer: (a)

Question. Assertion : Geological processes of mineral formation is slow
Reason : Minerals resources are consumed way quickly than they are formed.
(a) If both assertion and reason are true and reason is the correct explanation of assertion.
(b) If both assertion and reason are true but reason is not the correct explanation of assertion.
(c) If assertion is true but reason is false.
(d) If both assertion and reason are false.
Answer: (b)

Question. Assertion : Thermal power stations are located on or near the coal fields.
Reason : Coal is a bulky material, which loses weight on use as it is reduced to ash. Hence, heavy industries and thermal power stations are located on or near the coalfields.
(a) If both assertion and reason are true and reason is the correct explanation of assertion.
(b) If both assertion and reason are true but reason is not the correct explanation of assertion.
(c) If assertion is true but reason is false.
(d) If both assertion and reason are false.
Answer: (a)

Question. Assertion : Natural gas is referred as an environment friendly fuel.
Reason : Natural gas contains low carbon dioxide emissions.
(a) If both assertion and reason are true and reason is the correct explanation of assertion.
(b) If both assertion and reason are true but reason is not the correct explanation of assertion.
(c) If assertion is true but reason is false.
(d) If both assertion and reason are false.
Answer: (a)

Question. Assertion : Increased use of fossil fuels creates a healthy environment.
Reason : Fossil fuels such as coal, oil and gas are easily obtained from natural resource.
(a) If both assertion and reason are true and reason is the correct explanation of assertion.
(b) If both assertion and reason are true but reason is not the correct explanation of assertion.
(c) If assertion is true but reason is false.
(d) If both assertion and reason are false.
Answer: (d)

Question. Assertion : Conservation of Energy Resources is essential.
Reason : Energy is a basic requirement for economic development.
(a) If both assertion and reason are true and reason is the correct explanation of assertion.
(b) If both assertion and reason are true but reason is not the correct explanation of assertion.
(c) If assertion is true but reason is false.
(d) If both assertion and reason are false.
Answer: (a)