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Test: Rocks And Minerals - 1 - Class 5 MCQ


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20 Questions MCQ Test Science Class 5 - Test: Rocks And Minerals - 1

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Test: Rocks And Minerals - 1 - Question 1

Rocks are composed of naturally occurring substances called ________.

Detailed Solution for Test: Rocks And Minerals - 1 - Question 1

Minerals are the natural substances that make up rocks. They are like tiny building blocks that join together to form rocks. So, rocks are made up of minerals that come together in different ways and colors.

Test: Rocks And Minerals - 1 - Question 2

How are igneous rocks formed?

Detailed Solution for Test: Rocks And Minerals - 1 - Question 2
  • Igneous rocks are formed when melted rock cools down and solidifies, just like how melted wax from a candle turns solid again as it cools.
  • So, when the hot molten rock from below the Earth's surface cools and becomes solid, it forms igneous rocks.
  • It's like when you melt crayons and let them harden again into a new shape!
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Test: Rocks And Minerals - 1 - Question 3

Coal is formed from the remains of ______.

Detailed Solution for Test: Rocks And Minerals - 1 - Question 3

Coal is formed from the remains of trees. Millions of years ago, thick forests on earth, growing in swamps, eventually turned into coal as the trees died and got buried under layers of sand, mud, and more dead trees.

Test: Rocks And Minerals - 1 - Question 4

Basalt is an igneous rock formed by lava cooling on the earth's surface. It is dense and ____.

Detailed Solution for Test: Rocks And Minerals - 1 - Question 4

Basalt is an igneous rock that is dense and dark in color. It has fine grains and is formed by lava cooling on the earth's surface.

Test: Rocks And Minerals - 1 - Question 5

State whether the following statement is True or False:

All rocks on Earth are made up of only one mineral.

Detailed Solution for Test: Rocks And Minerals - 1 - Question 5
  • Rocks on Earth are made up of different minerals and not just one mineral. Some rocks can contain up to six or more minerals, giving them different colors and properties. So, the statement that all rocks are made up of only one mineral is False.
  • Imagine rocks are like a mix of different colored candies. Each candy is like a different mineral. Some rocks have many different colors of candies mixed together, while others might have just a few. That's why rocks can be different colors and have different patterns because they are made up of different minerals!
Test: Rocks And Minerals - 1 - Question 6

Which of the following is a rock?

Detailed Solution for Test: Rocks And Minerals - 1 - Question 6

Explanation:

  • Marble: Marble is a metamorphic rock formed from limestone. It is not a primary rock type.
  • Basalt: Basalt is an igneous rock that is commonly found in volcanic areas. It is a type of extrusive rock.
  • Granite: Granite is an igneous rock that is formed from the slow cooling of magma deep underground. It is a type of intrusive rock.
  • All of these: Both basalt and granite are types of rocks. Therefore, the correct answer is D, all of these.

 

Therefore, the correct answer is option D, "All of these." All of the options listed (marble, basalt, and granite) are types of rocks, with basalt and granite being primary rock types.

 

Test: Rocks And Minerals - 1 - Question 7

State whether the following statement is True or False:

Obsidian is also known as 'nature's glass' because of its glassy appearance.

Detailed Solution for Test: Rocks And Minerals - 1 - Question 7
  • True: Obsidian is indeed known as 'nature's glass' because it looks similar to glass.
  • It forms when lava cools quickly without forming crystals.
  • People used it in the past to make tools because its edges could be very sharp.
  • Nowadays, it's even used in surgical tools like scalpels because it can be made very sharp.
Test: Rocks And Minerals - 1 - Question 8
What happens to dead trees buried deep in the swamps over millions of years?
Detailed Solution for Test: Rocks And Minerals - 1 - Question 8
  • Objective: Dead trees buried deep in swamps over millions of years change into coal because of heat and pressure. This means that the trees slowly transform into a different kind of rock called coal. So, when trees are buried deep in the ground for a very long time, they change into something we can use for fuel.
Test: Rocks And Minerals - 1 - Question 9

State whether the following statement is True or False

Coal and petroleum are unlimited natural resources.

Detailed Solution for Test: Rocks And Minerals - 1 - Question 9
  • Coal and petroleum are not unlimited natural resources. They are valuable gifts from nature, but they are limited. If we keep using coal and petroleum as quickly as we are now, they will run out. It is estimated that petroleum deposits will only last for about 100 years and coal for about 250 years. This means that after that time, there won't be any more coal or petroleum left to use.
  • Using too much coal and petroleum can also release harmful substances like smoke and poisonous gases into the air, causing pollution and leading to dangerous diseases. This is why it's important to conserve these resources and find alternative, renewable sources of energy like solar power, wind energy, and hydropower.
Test: Rocks And Minerals - 1 - Question 10

What is marble primarily used for?

Detailed Solution for Test: Rocks And Minerals - 1 - Question 10
  • Marble is a type of rock that is commonly used to create statues and buildings. It can be easily carved and polished to make beautiful structures and artworks.
  • So, when people want to make something special and artistic, they often choose marble because it can be shaped into amazing things like statues and buildings.
Test: Rocks And Minerals - 1 - Question 11
What type of rock is formed when magma cools below the surface of the earth and has larger grains than basalt?
Detailed Solution for Test: Rocks And Minerals - 1 - Question 11
Granite is a type of rock that is formed when magma cools below the surface of the earth. It has larger grains than basalt and is usually light colored. Granite is very hard and is used in making buildings and statues. It contains three main minerals: pink feldspar, grey quartz, and black mica.
Test: Rocks And Minerals - 1 - Question 12

Water, minerals, coal and petroleum are ____________ .

Detailed Solution for Test: Rocks And Minerals - 1 - Question 12

Explanation:

  • Natural resources underground: Water, minerals, coal, and petroleum are all examples of natural resources that are found underground. These resources are formed over millions of years through geological processes and are extracted from beneath the earth's surface.
  • Water: Water is a vital natural resource that is essential for all forms of life. It is found underground in aquifers and can be extracted through wells.
  • Minerals: Minerals are naturally occurring substances that have a crystalline structure. They are found in rocks and are mined for various industrial purposes.
  • Coal: Coal is a fossil fuel that is formed from the remains of plants that lived millions of years ago. It is found in underground coal mines and is used for generating electricity.
  • Petroleum: Petroleum, also known as crude oil, is a fossil fuel that is found underground in reservoirs. It is the source of various products such as gasoline, diesel, and plastics.

 

These natural resources are essential for various human activities and play a crucial role in the economy and development of societies.

 

Test: Rocks And Minerals - 1 - Question 13

Marble is formed from _______.

Detailed Solution for Test: Rocks And Minerals - 1 - Question 13

Marble is made from limestone. Limestone is a type of rock that can be easily carved and polished into various shapes. Marble is often used to make statues and buildings, like the famous Taj Mahal, which is made of white marble.

Test: Rocks And Minerals - 1 - Question 14

State whether the following statement is True or False:

Slate is a light grey metamorphic rock that is used in making statues.

Detailed Solution for Test: Rocks And Minerals - 1 - Question 14

Slate is a dark grey metamorphic rock, not light grey. It is commonly used in making slates, blackboards, and the slanting roofs of buildings. It is not typically used in making statues. So, the statement is False.

Test: Rocks And Minerals - 1 - Question 15

State whether the following statement is True or False:

Rocks melt because it is very cold deep inside the earth.

Detailed Solution for Test: Rocks And Minerals - 1 - Question 15
  • Rocks actually melt because it is very hot deep inside the earth, not cold. When rocks melt, they become a liquid called magma. Magma can come to the surface and cool down to form solid rocks again. So, the statement is False.

  • Imagine rocks like ice cream. When it's hot outside, ice cream melts, right? Rocks melt like ice cream, but they need extreme heat deep inside the earth to do that. So, remember, rocks melt because it's hot, not cold!

Test: Rocks And Minerals - 1 - Question 16

In the given options places and type of soil are being matched, identify the wrongly matched

Detailed Solution for Test: Rocks And Minerals - 1 - Question 16

To identify the wrongly matched option, we need to analyze the given options and the types of soil associated with each place. Let's evaluate each option:
A: Beach → Sandy soil
- Sandy soil is commonly found in beach areas where the soil particles are large and have large spaces between them. This allows for good drainage and is suitable for growing drought-tolerant plants. This match is correct.
B: Garden → Loamy soil
- Loamy soil is a balanced soil type that consists of a mixture of sand, silt, and clay. It is known for its excellent drainage and water-holding capacity, making it ideal for gardening. This match is correct.
C: Swamp → Clay soil
- Swamps are characterized by waterlogged conditions and high moisture content. Clay soil, which has small particles and holds water well, is not suitable for swamp areas. This match is incorrect.
D: School field → Loamy soil
- Loamy soil is well-draining and suitable for various activities, including sports and recreational purposes. This match is correct.
Therefore, the wrongly matched option is C: Swamp → Clay soil.
Test: Rocks And Minerals - 1 - Question 17

Which of the following is igneous rock ?

Detailed Solution for Test: Rocks And Minerals - 1 - Question 17

Answer:
Igneous rock:
- Igneous rock is one of the three main types of rock, along with sedimentary and metamorphic rocks.
- It is formed through the solidification and cooling of magma or lava.
A: Basalt
- Basalt is a common type of igneous rock that is formed from the rapid cooling of lava on or above the Earth's surface.
- It is typically dark in color and has a fine-grained texture.
- Basalt is commonly found in volcanic areas and is used in construction, as a paving stone, and as an aggregate in concrete.

Test: Rocks And Minerals - 1 - Question 18

Which of the following is an aeroplane fuel?

Detailed Solution for Test: Rocks And Minerals - 1 - Question 18
Answer:
Aeroplane fuel:
- Petrol: Petrol, also known as gasoline, is one of the fuels used in aeroplanes.
- Nuclear energy: Nuclear energy is not used directly as a fuel in aeroplanes. It is primarily used for electricity generation.
- Solar energy: Solar energy is not used directly as a fuel in aeroplanes. It is primarily used for electricity generation or as a supplementary power source.
- Natural gas: While natural gas can be used as a fuel in some types of aircraft engines, it is not commonly used as the primary fuel for commercial aeroplanes.
Therefore, the correct answer is Petrol (option D) as it is one of the commonly used fuels in aeroplanes.
Test: Rocks And Minerals - 1 - Question 19

Match the column

Detailed Solution for Test: Rocks And Minerals - 1 - Question 19
  • The lithosphere is associated with land.
  • The atmosphere is associated with air.
  • The stratosphere is known for containing the ozone layer.
  • The hydrosphere encompasses all water bodies.

Thus, option A is the correct match: (A) - (III), (B) - (IV), (C) - (I), (D) - (II)

Test: Rocks And Minerals - 1 - Question 20

Petroleum is formed deep inside the earth in millions of years by

Detailed Solution for Test: Rocks And Minerals - 1 - Question 20

Formation of Petroleum:

  • Source: Petroleum is formed from the remains of dead plants and animals that have been buried deep underground for millions of years.
  • Process: Over time, the organic matter is subjected to high pressure and temperature, causing it to undergo a transformation into petroleum.
  • Types of Organic Matter: The organic matter that eventually becomes petroleum can include algae, plankton, and other marine organisms.
  • Location: Petroleum reservoirs are typically found in sedimentary rock formations where the conditions for petroleum formation were favorable.
  • Time Frame: The process of petroleum formation is a slow one, taking millions of years to complete.

 

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