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Practice Paper for Class 9 Social Science (Periodic Test–2)

Practice Sets for Class 9 Social Science (Periodic Test–2) with 40 Marks Blueprint ************************************ Preparing for Periodic Test–2 in Social Science becomes easier with well-structured practice sets .  These sets not only help students understand key concepts but also improve time management.  Moreover, each set follows a 40-mark blueprint , including MCQs, very short, short, and long answers .  Therefore, students can practice according to the actual exam pattern.  In addition, solving such sets regularly boosts confidence and reduces exam stress.  Furthermore, teachers can use these sets for revision and assessment.  Hence, practice sets serve as an effective tool for mastering History, Geography, Civics, and Economics before the final test. ********************************* To download PDF and Word file Click Below: Blue Print - CLICK HERE PDF(English) Practice Set - 1 CLICK HERE Answer Key - CLICK HERE Practice Set - 2  CLICK H...
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Minerals and Energy Resources-Question Answers

Minerals and Energy Resources
Question Answers
Class-10
Subject-Social Science

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2. Answer the following questions in about 30 words.

(i) Distinguish between the following in not more than 30 words.

(a) Ferrous and Non-Ferrous minerals:

Answer:

Ferrous minerals: 
Metallic minerals which contain iron are called ferrous minerals, e.g. iron ore, manganese, nickel, cobalt, etc.

Non-ferrous minerals:

Metallic minerals which do not contain iron are called non-ferrous minerals, e.g. copper, bauxite, tin, etc.

(b) Conventional and nonconventional sources of energy.

Conventional Sources of Energy: 

  1. Conventional sources of energy are those sources which have been use since the early times.
  2. They are exhaustible except hydro-energy.
  3. They cause pollution when used as they emit smoke and ash.
  4. Their generation and use involve huge expenditure.
  5. Very expensive to maintain, store, transmit as they are carried over long distances
    through transmission grids.
  6. Examples are – coal, natural gas, water, fire-wood.

 

Non-Conventional Sources of Energy:

  1. Non-conventional sources of energy have generally been identified in the recent past.
  2. They are inexhaustible.
  3. Generally these are pollutionfree.
  4. Low expenditure required.
  5. Less expensive due to local use and easy maintenance.
  6. Examples are – geothermal energy, solar energy, wind energy, tidal energy, biogas energy, nuclear energy.

(ii) What is a mineral?

Answer: A mineral is a homogeneous, naturally occurring substance with a definable interior structure.

(iii) How are minerals formed in igneous and metamorphic rocks?

Answer: In igneous and metamorphic rocks, molten/liquid and gaseous minerals are forced upwards into the cracks. They then solidify and form veins or lodes.

(iv) Why do we need to conserve mineral resources?
Answer:

  1. It takes millions of years for the formation of minerals.
  2. Compared to the present rate of consumption, the replenishment rate of minerals is very slow.
  3. Hence, mineral resources are finite and non-renewable. Due to this, it is important that we conserve the mineral resources.

3. Answer the following questions:

(i) Describe the distribution of coal in India.

Answer:

  1. The major resources of metallurgical coal belong to the Gondwana age and are located mainly in the north eastern part of the peninsula.
  2. Rich reserves of coal are found in the Damodar Valley region in the states of West Bengal and Jharkhand.
  3. Raniganj in West Bengal and Jharia and Bokaro in Jharkhand are important coalfields. One third of the total production comes from here.
  4. Coal is also found in the Godavari, Mahanadi, Son and Wardha valleys. Korba in Chhattisgarh, Singrauli and Penah-kanhan valley in Madhya Pradesh, Talcher in Orissa, Kamptee and Chandrapur in Maharashtra and Singareni of Andhra Pradesh are important coal mines.
  5. Tertiary coal occur in the north eastern states of Meghalaya, Assam, Arunachal Pradesh and Nagaland.
  6. Principal lignite reserves are found in Neyveli in Tamil Nadu.

(ii) Why do you think that solar energy has a bright future in India?

Answer: Solar energy has a bright future in India because :

  1. India being a tropical country receives sunlight in abundance throughout the year.
  2. Solar plants can be easily established in rural and remote areas.
  3. It will minimize the dependence of rural households on firewood and dunk cakes which in turn will contribute to environmental conservation and adequate supply of manure in agriculture.
  4. Reduces reliance on fossil fuels: Solar energy can help India reduce its dependence on imported fossil fuels.
  5. Renewable resource: Solar energy is a renewable resource, unlike conventional sources of energy that are exhaustible and non-renewable.

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Solutions Class 10 SST Civics (Political Science): Democratic Politics-II

 Click Below 👇
. Chapter 1 - Power Sharing
. Chapter 2 - Federalism
. Chapter 4 -  Political Parties 
 . Chapter 5 - Outcomes of Democracy 
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Solutions for Class 10 Social Science History (India and Contemporary World-II)       Click Below 👇
. Chapter 2 - Nationalism In India 
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Solutions for Class 10 Social Science Geography - Contemporary India-II
. Chapter 3- Water Resources 

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Solutions for Class 10 Social Science Economics


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