Tag: Samacheer Kalvi 3rd Standard Social Science Guide Term 3 Chapter 2

Samacheer Kalvi 3rd Standard Social Science Book Solutions Term 3 Chapter 2 Mineral Resources

I. Choose the correct answer.

Question 1.
The metal inside the wires are made up of ______
(a) Iron
(b) Zinc
(c) Copper
Answer:
(c) Copper

Question 2.
_______ is used for making jewels.
(a) Zinc
(b) Bauxite
(c) Gold
Answer:
(c) Gold

Question 3.
Which mineral is used as fertilizer?
(a) Zinc Oxide
(b) Potash
(c) Iron ore
Answer:
(b) Potash

Question 4.
Zinc is found in _______.
(a) Milk
(b) Biscuit
(c) Fish
Answer:
(c) Fish

Question 5.
Which mineral is used in Aircraft making industry^
(a) Zinc
(b) Bauxite
(c) Potash
Answer:
(b) Bauxite

II. Match the following.

1. Bauxite	a. Railway tracks
2. Iron ore	b. Copper
3. Zinc oxide	c. Aluminium
4. Metal wires	d. Soap
5. Potash	e. Rubber products

Answer:

1. Bauxite	a. Aluminium
2. Iron ore	b. Railway tracks
3. Zinc oxide	c. Rubber products
4. Metal wires	d. Copper
5. Potash	e. Soap

III. Answer the following.

Question 1.
Name some minerals found on the earth.
Answer:
Copper, Iron ore, Gold, Bauxite, Zinc, Potash, Calcium, Aluminium.

Question 2.
Name some minerals that are conductors of electricty.
Answer:
Gold, Copper, Silver, Aluminium.

Question 3.
Write few uses of Copper.
Answer:

• Copper is used in electrical equipment such as wiring and motors.
• It also uses in construction and industrial machinery.

Question 4.
Give a short note on Iron ore.
Answer:
Iron ore is mainly used to produce iron. It is found at Kanjamalai in Tamil Nadu.

Question 5.
Why Zinc is called the essential trace element?
Answer:

1. Zinc is called the essential trace element because very small amount of zinc is necessary for human health.
2. Our body does not store excess zinc, it must be consumed regularly as part of the diet.
3. Common food sources of zinc include red meat, white meat and seafood.

Activity (Text Book Page No. 124):

Question 1.

Answer:
Iron rod

Question 2.

Answer:
Copper bowl

Question 3.

Answer:
Gold bangles

3rd Standard Social Science Guide Mineral Resources Additional Questions and Answers

I. Choose the correct answer.

Question 1.
_________ is very good conductor of electricity.
(a) Copper
(b) Zinc
(c) Iron
Answer:
(a) Copper

Question 2.
________ is considered as one of the most precious mineraf.
(a) Aluminium
(b) Iron
(c) Gold
Answer:
(c) Gold

Question 3.
________ of potash is used for making fertilizers.
(a) 60%
(b) 95%
(c) 100%
Answer:
(b) 95%

Question 4.
Non-renewable resources can be divided into ________ types.
(a) 2
(b) 3
(c) 4
Answer:
(b) 3

II. Fill in the blanks.

Question 1.
Iron ores are found at _______ in Tamil Nadu.
Answer:
Kanjamalai

Question 2.
Gold is extracted from ________.
Answer:
Gold ore

Question 3.
Bauxite is used to make __________.
Answer:
Aluminium

Question 4.
_________ is also used to manufacture rubber and cosmetics.
Answer:
Bauxite

III. Write True or False.

Question 1.
Gold is also a very good conductor of electricity.
Answer:
True

Question 2.
The Bauxite are found at Kanjamalai in Tamil Nadu.
Answer:
False

Question 3.
The remaining 5% Potash is used in commercial and industrial products.
Answer:
True

Question 4.
Iron, Copper and Gold are called Non – mineral resources.
Answer:
False

IV. Match the following.

1. Natural Gas	a. Bicycles
2. Mineral resources	b. Aircraft industry
3. Iron	c. Electrical equipments
4. Bauxite	d. Silver
5. Zinc Oxide	e. Fossil fuels

Answer:

1. Natural Gas	a. Fossil fuels
2. Mineral resources	b. Silver
3. Iron	c. Bicycles
4. Bauxite	d. Aircraft industry
5. Zinc Oxide	e. Electrical equipment

V. Answer the following.

Question 1.
Write about Copper.
Answer:

1. Copper is one of the most used mineral in today’s world.
2. It is very good conductor of electricity.
3. Copper is used in all electrical appliances including computers, televisions, mobile phones and other electronic devices.

Question 2.
What is Natural resources?
Answer:
Natural resources are important to us because they satisfy the daily needs of man such as food, clothing and shelter.

Question 3.
What is non-renewable resources?
Answer:
Natural resources that once consumed, cannot be replaced are called non-renewable resources.

Question 4.
Write a note on i) Fossil fuels ii) Mineral resources
Answer:

1. Fossil fuels: Coal, Petroleum and Natural gas are called Fossil fuels.
2. Mineral resources: Iron, Copper, Bauxite, Gold, Silver and others are called Mineral resources.

Question 5.
What are the types of Non-renewable resources?
Answer:
Non-renewable resources can be divided into three types. They are:

• Metallic resources
• Non – metallic resources
• Fossil fuel resources

Question 6.
What are the uses of Bauxite?
Answer:

1. Bauxite is used to make aluminium.
2. It is used in Aircraft making industry, electrical industry and is also used in making machines.
3. It is also used to manufacture rubber and cosmetics.

Samacheer Kalvi 3rd Standard Social Science Guide