I. Very Short Type
Questions –
Q1.
Which Type of Coal is the best quality of Coal?
Ans:
Anthracite
Q2.
Name the metallic minerals?
Ans: iron,
Gold, Silver, Copper.
Q3.
Give two examples of Non-ferrous minerals.
Ans:
Gold, Copper
Q4.
What is the full form of CNG?
Ans:
Compressed Natural Gas.
Q5.
Write the name of two Conventional source of Energy.
And:
Coal and Petroleum.
Q6.
Khetri Mines in Rajasthan is famous for which mineral?
Ans:
Copper.
Q7.Which
place in India famous for Geo Thermal Energy ?
Ans:-
Manikarn in Himachal Pradesh and puga valley in Ldakh .
Q.8.
Kudremukh mines are famous for which mineral?
Ans:-
Iron ore
Q.9 What are placer deposits?
Ans: -
Mineral that occur as alluvial deposit
in sands of valley floor.
Q.10.
Name the two raw materials (elements) of
atomic power energy?
Ans :-
Thorium and Uranium.
Q.11 How
many percent minerals intake represents in our total intake of nutrients –
Ans:- 0.3
Q.12Magnetite
is the finest iron or with a new higher content iron- up to –
Ans:- 70%
Q.13
State which is the largest producer of Manganese is –
Ans:- Orissa
Q.14
Which is the oldest oil producing state in India:
Ans:-Assam
Q.15
India now ranks as a super power in the world, that is:
Ans :- Wind Super Power
II.SHORT ANSWER TYPE
QUESTIONS
Q1 .Discovery and use of
iron brought a radical change in human life‖ prove it with three examples.
Ans: a) Revolution in
agriculture-different type of tools invented like axe, hoe, plough etc.
b) Revolution in
industry-different tools and machines like spinning.
c) Revolution in
transportation- bullock-cart, ships, boats etc.
Q2. Describe the various forms in which minerals
occur.
Ans: a) In igneous and
metamorphic rocks (cracks, crevice, faults or joints)
b) In beds or layers of
sedimentary rocks due to deposition, accumulation and concentration.
c) Decomposition of surface
rocks
d) Alluvial deposits in sands
of valleys and the base of hills as ― Placer Deposits
Q3. Why mining activity is often called a ―Killer
Industry. Give three reasons.
Ans: a) High risk involved
b) Due to poisonous fumes,
mines are vulnerable to workers for pulmonary diseases.
c) Risk of collapsing mines
roofs, and fires in coal mines.
d) Water sources get contaminated
Q4. Give three reasons in the favour of use of Atomic
energy‘.
Ans: a) Coal and natural oil
are exhaustible.
b)
Nuclear power plants are easy to handle
c)
Most developed countries are utilizing this energy successfully
d)
It can be useful in fields of medicines and agriculture
e) Hydel energy is not
satisfactory due to environmental issues
Q5. why does solar energy in Rajasthan have
greater potential as non –conventional source of energy?
Ans: a) Hot and dry region
b) Clear sky almost whole year
c) Cheaper installation
d) Renewable and pollution free
energy source.
e) Government motivation
III. LONG ANSWER TYPE QUESTIONS
Q.1 What are the Petroleum
producing areas in India. Explain.
Ans . Most of the petroleum
producing areas in India are associated with anticlines and faults traps in the
rock formations of the tertiary age. In the region folding, anticlines or
domes, it occurs where oil is trapped in the crest of the uphold. Petroleum is
also found in fault traps between porous rocks.
Major petroleum producing areas
of India are …
1)
ASSAM- Digboi, Naharkatia, Moran-Hugrijan, Namdang region
2)
GUJRAT- Ankeleshwar, Lunez, Navgan
3)
MUMBAI HIGH
4) Godavari – Mahanadi basin
Q2: Distinguish between
Natural Gas and Bio Gas.
Ans: NATURAL GAS
1. It is a mixture of combustible gaseous
hydrocarbons occurring in the rocks of earth crust.
2. This
is commercial energy.
3.
It is used as raw material in the petrochemicals.
4.
It is transported from one place to another through pipeline.
5.
Mostly used in urban areas.
BIO GAS
1.
It is derived by decomposition of waste of animals and plants with the help of
microorganism in presence of water.
2.
Non commercial energy
3.
It is produced in tanks
4. It is found in rural areas
Q.3 What is Non -
Conventional sources of energy? Discuss two sources of such types of energy.
Ans: Sources of energy which
are renewable, eco-friendly and newer one are called non conventional sources of
energy i.e. wind energy, geothermal energy, tidal energy etc.
1. GEOTHERMAL ENERGY:
Geothermal energy refers to the
heat and electricity produced by using the heat from the interior of the earth.
Where the geothermal gradient is high , high temperature is found at shallow
depth . There are several hot springs in India which could be used to generate
electricity. Two projects, one is MANIKARAN in Himachal and second in PUGA
VALLEY in Ladakh has been set up in India to harness Geothermal energy.
2. TIDAL ENERGY: Oceanic tides can be used to generate electricity
.During high tides water flows into the inlet and get trapped when it is
closed. After the fall of tide the water flows back to the sea via pipe lines
that carry it through power generating turbines. In India gulf of Kutch
provides ideal conditions for tidal energy.
Q4 India now ranks as a WIND
SUPER POWER in the world. Why?
Ans: 1. India gets advantage of
trade winds, western lies and monsoon winds.
2.
Wind energy completely pollution free and non exhaustible that‘s why it becomes
popular.
3.
India has an ambitious program to install 250 wind driven turbines with total
capacity of 45 mega watts spread over 12 suitable locations.
4.
India‘s potential wind power generation is of 50000 megawatts of which ¼ can be
easily harnessed.
5. Rajasthan, Gujarat,
Maharashtra, Karnataka and Tamil Nadu have favorable conditions for wind
energy. Wind power plant at LAMBA in Gujarat, is the largest in Asia.
Q5. How can we conserve
energy resources in India? Explain.
Ans : Following efforts can be
made to conserve energy resource in India:
1. Using public transport
instead of individual vehicles.
2. Switching of electricity
when not in use.
3. Using power saving devices.
4. More and more use of non
conventional source of energy as they are renewable and eco-friendly.
5. In automobiles electrical
motors should be introduced.
6. Intensified exploration
and research of new sources of energy.