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Published on: 30/10/2019
Term 2 - Resources
Download Tamil Nadu 7th Standard Social Science question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Social Science Test
1.
Electricity produced from coal is called _______.
Thermal Power
Nuclear power
Solar power
Hydel power
2.
______ is one of the indispensable minerals used in electrical and electronics Industry.
Limestone
Mica
Manganese
Silver
3.
Which is one of the first metals known and used by man?
Iron
copper
Gold
Silver
4.
Where is the largest solar power project situated in India?
Kamuthi
Aralvaimozhi
Muppandal
Neyveli
5.
Which one of the following is renewable resource?
Gold
Iron
Petrol
solar energy
6.
_________ is produced from bauxite ore.
7.
Iron ores found at _________ in Tamil Nadu.
8.
Assertion (A) : Natural gas is found with petroleum deposits.
Reason (R) : It can be used as a domestic and industrial fuel.
a. A and R are correct and R explains A
b. A and R are correct but R does not explain A
c. A is incorrect but R is correct
d. Both A and R are incorrect
9.
Assertion (A) : Wind power is Clean Energy.
Reason (R) : Wind turbines do not produce any emissions
a. A and R are correct and R explains A
b. A and R are correct but R does not explain A
c. A is incorrect but R is correct
d. Both A and R are incorrect
10.
Give a short note on Duralumin.
11.
Name the types of coal based on carbon content.
12.
What are the uses of iron?
13.
Metallic resources and non-metallic resources
14.
Renewable resources and non-renewable resources
15.
Biotic resources and abiotic resources
16.
Water is considered as a great source of energy.
17.
Aluminium has wide range of uses compared to other metals.
18.
What are the different types of fossil fuel resources? Explain them.
19.
Describe the non-metallic resources.
1.
(a)
Thermal Power
2.
(b)
Mica
3.
(b)
copper
4.
(a)
Kamuthi
5.
(d)
solar energy
6.
( )
Aluminum
7.
( )
Kanjamalai
8.
b. A and R are correct but R does not explain A
9.
a. A and R are correct and R explains A
10.
Duralumin is an alloy of aluminium with some other metals. It is made up of 90% aluminium 4% copper 1% magnesium and 1% manganese. As it is a light and hard it is used in aircraft construction.
11.
Coal is classified into four types based on carbon content.
They are:
1. Anthracite
2. Bituminous
3. Lignite
4. Peat.
12.
(i) Iron is used to manufacture steel and also used in civil engineering like reinforced concrete, girders etc.
(ii) It is used to make alloy steels like carbon steels with additives such as nickel, chromium, vanadium, tungsten and manganese.
13.
| S.No | Metallic resources | Non-metallic resources |
| 1. | Metallic resources are the types of resources that are composed of metals |
Non-metallic resources can be described as the resources that do not comprise of metals |
| 2. | These are hard substances, which are the good conductors of heat and electricity |
These are not hard substances and are not good conductors of heat and electricity. |
| 3. | Example for metallic resources are iron, copper, gold, bauxite, silver, manganese, etc. |
Example for non-metallic resources are mica, limestone, gypsum, dolomite, phosphate, etc. |
14.
| S.No | Renewable resources | Non-renewable resources |
| 1. | Renewable resources can be used again and again throughout its life |
Non-renewable resources cannot be used again and again as it is limited which can be depleted one day. |
| 2. |
These resources are present in |
These resources are present in a limited quantity only. |
| 3. | These resources are pollution free | These resources are not pollution free |
| 4. | Example: Solar energy, wind energy and hydropower. |
Example: Fossil fuels, iron, copper, gold silver etc. |
15.
| S.No | Biotic resources | Abiotic resources |
| 1. | Biotic resources are found in the biosphere which are obtained from living and organic materials. |
Abiotic resources are the no-living parts of an environment |
| 2. | Biotic resources depend on abiotic resources for their survival |
Abiotic resources do not depend on biotic resources for their survival. |
| 3. | Example: Plants, trees, animals, microorganisam etc. |
Example: Sunlight, temperature, water, soil, air, etc. |
16.
At present, water is used for producing hydroelectric power. Hydroelectricity is generated from moving water with high velocity and great falls with the help of turbines and dynamos. so water is considered as a great source of energy.
17.
Aluminium has wide range of uses compared to other metals. Because
1) Aluminium is light in weight, tough and cheaper, which makes it popular metal for constructional purpose.
2) It is mainly used in the construction of aircrafts, ship, automobiles, railway coaches and etc.
3) So, Aluminium has wide range of use compared to other metals.
18.
Fossil fuel resources:
(i) Fossil fuel resources are normally formed from the remains of dead plants and animals.
(ii) They are often referred to as fossil fuels and are formed from hydrocarbon.
Coal:
(i) This is the most abundantly found fossil fuel that forms when dead plant matter is converted into peat.
(ii) It is used as a domestic fuel, in industries such as iron and steel, steam engines to generate electricity.
Petroleum:
(i) Petroleum is found between the layers of rocks and is drilled from oil fields located in Offshore and coastal areas.
(ii) Petroleum and its derivative are called Black Gold as they are very valuable.
Natural gas:
(i) Natural gas is found with petroleum deposits and is released when crude oil is brought to the surface.
(ii) It can be used as a domestic and industrial fuel.
19.
Non-metallic resources:
(i) Non-metallic resources can be described as the resources that do not comprise of metals.
(ii) These are not hard substances, and are not good conductors of heat and electricity.
(iii) Example for non-metallic resources are mica, limestone, gypsum, dolomite, phosphate, etc.
Mica:
(i) Muscovite and Biotite are the common ores of Mica.
(ii) It is one of the indispensable minerals used in electrical and electronics industry.
(iii) In powder form, it is used for making lubricating oils and decorative wallpapers.
Limestone :
(i) Limestone is a sedimentary rock, composed mainly by skeletal fragments of marine organisms such as coral, foraminifera and molluscs.
(ii) About 10 % of sedimentary rocks are limestones. Mostly limestone is made into crushed stone and used as a construction material.
(iii) It is used for facing stone, floor tiles, stair treads, windows sills and many other purposes.
(iv) Crushed limestone is used in smelting and other metal refining process. Portland cement is made from limestone.
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Tamilnadu Stateboard 7th Standard Subjects
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