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Geography Ch - 2 Inside Our Earth Social Studies - Geography Ch - 2 Inside Our Earth

CBSE - STD 7 - Social Studies (CBSE - English Medium). 75 questions in this chapter.

Question types

Geography Ch - 2 Inside Our Earth question types

75 questions across 10 question groups — pick any mix to generate a Social Studies paper with step-by-step answer keys.

75
Questions
10
Question groups
5
Question types
Sample Questions

Geography Ch - 2 Inside Our Earth questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 1MCQ (1 Mark)1 Mark
Name the minerals found in the oceanic crust.
  • A
    Silica and Aluminium
  • B
    Silica and Sodium
  • ✓
    Silica and Magnesium
  • D
    Silica and Sulphur

Answer: C.

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Q 2MCQ (1 Mark)1 Mark
Identify the correct option that describes the type of which rock given below.
(i) They are formed, when the molten magma cools and becomes solid.
(ii) They are also known as 'primary rocks'.
(iii) There are two types of igneous rocks-intrusive rocks and extrusive rocks.
  • A
    Sedimentary rocks
  • B
    Metamorphic rocks
  • ✓
    Igneous rocks
  • D
    None of the above

Answer: C.

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Q 3MCQ (1 Mark)1 Mark
Shubham, a resident from Pune, Maharashtra observed the increasing construction of buildings and infrastructure, many hard rocks are being used for road and building construction. What is the most likely consequence of this extensive use of hard rocks in construction in the near future?
  • A
    Increased seismic activity in the region
  • B
    Soil erosion and degradation
  • C
    Enhanced availability of groundwater
  • ✓
    Depletion of natural rock resources

Answer: D.

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Q 4MCQ (1 Mark)1 Mark
Laxmi, a geology enthusiast, is exploring a region with diverse rock formations. As she uncovers the secrets of the Earth's interior, which process in the rock cycle is she most likely to witness?
  • A
    Observing the growth of new minerals on the Earth's surface
  • B
    Documenting the cooling and solidification of molten magma.
  • C
    Studying the transport and deposition of small rock fragments by natural forces.
  • ✓
    Analysing the melting and reformation of rocks due to high heat and pressure.

Answer: D.

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Q 5MCQ (1 Mark)1 Mark
The Earth's crust is composed of various types of rocks, including igneous, sedimentary and metamorphic rocks. These rocks undergo a continuous cycle of transformation. Given this information, which of the following statements is most accurate regarding the significance of the rock cycle?
  • A
    The rock cycle helps us understand the formation of rocks, but does not have any practical implications.
  • B
    The rock cycle is essential for geological research, but has no relevance to everyday life.
  • ✓
    The rock cycle has significant practical applications, such as the source of construction materials and the study of Earth's history.
  • D
    The rock cycle is merely a theoretical concept and does not affect any real-world processes.

Answer: C.

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Q 6Assertion and Reason (1 Mark)1 Mark
Assertion (A) Granite is an example of an extrensive igneous rock with large grains.
Reason (R) Intrusive igneous rocks cool down slowly. deep inside the Earth's crust, allowing for the formation of large grains.
  • A
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true, but R is not the correct explanation of A
  • C
    A is true, but R is false
  • ✓
    A is false, but R is true

Answer: D.

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Q 7Assertion and Reason (1 Mark)1 Mark
Assertion (A) The Earth's mantle constitutes the majority of its volume.
Reason (R) The mantle forms 84 per cent of the Earth's volume.
  • ✓
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true, but R is not the correct explanation of A
  • C
    A is true, but R is false
  • D
    A is false, but R is true

Answer: A.

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Q 28SHORT ANSWER QUESTIONS(3 Mark)3 Marks
"Rocks roll down, crack, and hit each other and are broken down into small fragments. These smaller particles are called sediments. These sediments are transported and deposited by wind, water, etc."
How are sediments formed, and what processes are Involved in their transportation and deposition?
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Q 34CASE BASED QUESTIONS(4 Mark)4 Marks
Read the passage given below and answer the following question.
Rocks are made up of different minerals. Minerals are naturally occurring substances which have certain physical properties and definite chemical composition. Minerals are very important to human kind. Some are used as fuels. For example, coal, natural gas and petroleum. They are also used in industries-iron, aluminium, gold, uranium, etc. in medicine, in fertilisers, etc.
(i) What are rocks primarily composed of?
(a) Organic materials $\quad$ (b) Minerals $\quad$ (c) Gases$\quad$ (d) Water
(ii) Which of the following is not a characteristic of 0 minerals?
(a) Crystalline structure
(b) Specific physical properties
(c) Naturally occurring
(d) Variable chemical composition
(iii) Which of the following minerals is used as fuel?
(a) Coal $\quad$ (b) Iron $\quad$ (c) Mica $\quad$ (d) Gypsum
(iv) Which of the following is an example of industries in which minerals like iron, aluminium commonly are used?
(a) Agriculture $\quad$ (b) Textiles $\quad$ (c) Healthcare $\quad$ (d) Automobiles
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Q 35Match the Following.4 Marks
List IList II
A. Core1. Earth's surface
B. Minerals2. Changes into slate
C. Rocks3. Made of Silica and Alumina
D. Clay4. Has definite chemical composition
5. Innermost layer
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