Minerals and power resources ,geography chapter 3 / CBSC Class 8 NOTES

Minerals and power resources ,geography chapter 3 / CBSC Class 8 NOTES

Question 1- name any e three common minerals used by you everyday? 

Answer- the minerals used in in our daily life are -: Salts, iron, copper etc. 

Question 2- tu what is an ore ? Where are the the ores of metallic minerals generally located? 

Answer  – an ore is a row form of minerals are found in a a given rock. The ores of metallic minerals are are found in hard- rock under the contain minimum quantity of that mineral. So that it can be e interacted. 

Question 3- name two regions which in natural gas resources. 

Answer- the regions which are rich this Reserves of natural gas resource are 

1- russiya, uk, and Norway in Europe. 

2- jaisalmer, krishna Godavari besan and digboi reason in India. 

Question 4- which sources of energy would you suggest for rural areas? 

rural areas- 

1- biogas energy and solar energy for rural areas. 


(b) coastal areas. 
– hydel and tidal, wind energy for coastal areas. 

(c) arid areas 

– wind and solar energy for arid areas. 

Question 5- give five ways in in which you can save energy at home? 

Answer- five ways in which energy can be saved at home 

1- switching off lights, fans and other electrical items when not they are not in use. 

2- by seeing that electrical device are operating efficiently. 

3- using LED bulbs, tubelight, tV and computer monitor. 

4- cooking goods in in pressure cookers and keeping the lids of pens: Cooking. 

5- unplugging electrical device when not in use. 

Question 6- environment aspects must be carefully looked into before building huge dams? 

Answer- it is because:- 

1- dance create in balance in the earth equilibrium. 

2- deforestation leads to environmental pollution. 

3- people become displaced. It it require shifting causing lot of hard shapes. 

4- it traits of flood and earthquake. 

Question 7 difference between conventional and non conventional source of energy? 


1- have been common 

2- are generally it enhavstible. 

3- are mostly polluting. 

4- example – coal, fire ,wood. 


1- are not conventionally used. 

2- are generally in Alhashtable. 

3- are mostly non-polluting. 

4- example  – solar energy, nuclear energy. 

Question 8- difference between biogas and natural gas? 


1- formed using organic waste sach and dead plant and animal matter, animal dung and Kitchen waste. 

2- is a non conventional source of energy. 

3- if easily available 

Natural gas 

1- found along with petroleum deposits and get released when curd oil is is what to the surface. 

2- if a conventional source of energy. 

3- not easily available very few containers have sufficient to natural gas reserves of there own. 

4- is a cleaner fuel. 

5- used as domestic fuel as wall as industrial fuel. Biogas messenger 

Question 9- difference between ferrous and non-ferrous? 



1- a metallic minerals that contain iron. 

Example:- iron ore 

Non ferrous 

1- a metallic minerals that does not contain. Example gold ,silver. 

Question 10- what is the different between metallic and nonmetallic? 



1- are minerals containing metal in a form. 

2- they are hard substance that conduct heat and electricity. 

3- they have lustre. 

4- iron ore, bauxite,manganese are the example of metallic. 

Non metallic 

1- A minerals not containing metal. 

2- they are soft and cannot conduct heat and electricity. 

3- they do not have lustre. 

4- limestone, coal and petroleum are the example of non metallic. 

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