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Chapters
2: Life Processes in Living Organisms Part - 1
3: Life Processes in Living Organisms Part - 2
4: Environmental Management
▶ 5: Towards Green Energy
6: Animal Classification
7: Introduction to Microbiology
8: Cell Biology and Biotechnology
9: Social Health
10: Disaster Management
![SCERT Maharashtra solutions for Science and Technology Part 2 [English] Standard 10 Maharashtra State Board chapter 5 - Towards Green Energy - Shaalaa.com](/images/science-and-technology-part-2-english-standard-10-maharashtra-state-board_6:5f2b1b2038084cf381bfa42c826a928c.jpg "SCERT Maharashtra solutions for Science and Technology Part 2 [English] Standard 10 Maharashtra State Board chapter 5 - Towards Green Energy")
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Solutions for Chapter 5: Towards Green Energy
Below listed, you can find solutions for Chapter 5 of Maharashtra State Board SCERT Maharashtra for Science and Technology Part 2 [English] Standard 10 Maharashtra State Board.
SCERT Maharashtra solutions for Science and Technology Part 2 [English] Standard 10 Maharashtra State Board 5 Towards Green Energy Choose the correct option [Pages 4 - 5]
In modern civilization, __________ has become a primary need.
food
cloth
shelter
energy
Most electric power plants are based on the principle of ___________.
electro induction
magnetic induction
electromagnetic induction
electromagnet
Principle of Electromagnetic induction was invented by the scientist ___________.
Ohm
Michael Faraday
Joule
Newton
In the power plant based on nuclear energy, __________ is used to rotate the generator.
Steam turbine
air turbine
water turbine
none of these
When a neutron is bombarded on an atom of uranium, ____________ neutrons generated in this process.
1
2
3
4
Kinetic energy in flowing water drives ________ to generate electricity.
watermill
windmill
turbines
generator
Wind turbines with capacity are commercially available.
1 kW to 7 MW
1 kW to 7 kW
1 kW to 7000 W
1 W to 7 MW
Solar photovoltaic cells convert the solar radiation energy directly into ______ energy.
electrical
potential
kinetic
heat
chemical
solar
mechanical
A silicon solar cell of dimension 1 sq.cm. generates a current of about ___________.
50 mA
30 mA
50 A
30 A
A silicon solar cell of dimension 1 sq.cm. generates __________ potential difference.
0.1 V
0.5 V
0.1 mV
0.5 mV
In nuclear power plants, neutrons are bombarded on atoms of __________.
Uranium - 236
Barium
Krypton
Uranium - 235
SCERT Maharashtra solutions for Science and Technology Part 2 [English] Standard 10 Maharashtra State Board 5 Towards Green Energy Find an odd one out [Pages 9 - 10]
Find an odd one out.
Hydroelectric energy
Solar energy
Nuclear energy
Wind Energy
Find an odd one out.
Silicon
Uranium
Petrol
Coal
Find an odd one out.
Solar Photovoltaic cell
Electricity generation using wind energy
Hydroelectric power plant
Solar thermal power plant
Find an odd one out.
Water
Wind
Natural gas
Fossil fuel
Find an odd one out.
Edible oil
LPG
CNG
Crude oil
Find an odd one out.
Coal
Natural gas
Plutonium
Crude oil
Find the odd one out.
Solar Bulb, Solar Cell, Solar Panel, String, Array
SCERT Maharashtra solutions for Science and Technology Part 2 [English] Standard 10 Maharashtra State Board 5 Towards Green Energy Name the following [Page 11]
The Electric Power Stations based on Thermal Energy.
Nuclear power plants in India
Major hydroelectric power plants in India
Forms of energy.
A machine/An engine required to rotate the generator.
Name any two natural gases.
Type of power generation station at Chandrapur.
SCERT Maharashtra solutions for Science and Technology Part 2 [English] Standard 10 Maharashtra State Board 5 Towards Green Energy Relate the following [Pages 12 - 13]
Hydroelectric power station : Water stored in dams : : Nuclear power station : ____________
Stove : Thermal energy : : Sewing machine : _____________
Power available from solar cells : DC : : power require to run domestic equipments : _________
Thermal power generation : Air pollution : : Nuclear power generation : _____________
SCERT Maharashtra solutions for Science and Technology Part 2 [English] Standard 10 Maharashtra State Board 5 Towards Green Energy Write the function of [Page 13]
Write the function of Generator.
Write the function of Turbine.
Write the function of Condenser.
SCERT Maharashtra solutions for Science and Technology Part 2 [English] Standard 10 Maharashtra State Board 5 Towards Green Energy Write true or false [Pages 13 - 14]
The power produced from solar cells is a DC.
True
False
Write whether true or false
Electrical energy can be generated.
True
False
While producing hydroelectric energy, there is no pollution.
True
False
In a windmill, the rotating blades drive the turbine and the turbine in turn drives the generator to generate electricity.
True
False
In nuclear power plants, the chain reaction cannot be controlled.
True
False
The disposal of nuclear waste safely is a big challenge before scientists.
True
False
Efficiency of power generation plants based on energy of natural gas is higher than that of the power generation plant based on coal.
True
False
In a hydroelectric power plant, the potential energy in water stored in a dam is converted into kinetic energy.
True
False
In nuclear power plants, turbines working on solar panels are used.
True
False
The potential difference available from a solar cell depends on its area.
True
False
SCERT Maharashtra solutions for Science and Technology Part 2 [English] Standard 10 Maharashtra State Board 5 Towards Green Energy Match the following [Pages 15 - 16]
Match the following.
| Column A | Column B |
| 1) Polluting energy | a) smoke particles |
| 2) Environment friendly energy | b) thermal energy |
| c) wind energy |
Match the following.
| Column A | Column B |
| 1) Sunlight | a) Atomic radiation |
| 2) Natural gas | b) Environment friendly energy |
| c) Fossil fuel |
Match the following.
| Thermal Power Plant | State | Capacity | |
| 1 | Vindyanagar | Maharashtra | 4760 |
| 2 | Mundra | Chhattisgarh | 4620 |
| 3 | Tamnar | Gujarat | 3400 |
| 4 | Chandrapur | Madhya Pradesh | 3340 |
| Atomic Power Plant | State | |
| 1 | Kudankulam | Maharashtra |
| 2 | Tarapur | Tamil Nadu |
| 3 | Rawatbhata | Karnatak |
| 4 | Kaiga | Rajasthan |
| No. | Hydroelectric Power Plant | State |
| 1) | Tehari | Andhra Pradesh |
| 2) | Koyana | Himachal Pradesh |
| 3) | Srisailam | Uttarakhand |
| 4) | Nathpa Zakri | Maharashtra |
SCERT Maharashtra solutions for Science and Technology Part 2 [English] Standard 10 Maharashtra State Board 5 Towards Green Energy Define [Page 17]
Define.
Electromagnetic induction
Define.
Nuclear fission
SCERT Maharashtra solutions for Science and Technology Part 2 [English] Standard 10 Maharashtra State Board 5 Towards Green Energy Answer in one sentence [Pages 18 - 19]
Write the advantages of the Hydroelectric Power project.
Write the problems associated with hydroelectric power projects.
Answer in one sentence.
Write the merits of atomic energy.
Answer in one sentence.
Write the demerits of an atomic energy plant.
Draw the flowchart showing generation of electrical energy through hydroelectric power plant.
Which substance is used as fuel in nuclear power plants?
Energy from fossil fuels and nuclear plants are not eco-friendly sources, why?
Solar reflectors are important, why?
In fuels coal and natural gas, which one is eco-friendly? why?
State the importance of inverters.
Why are control rods used in nuclear reactors?
What is green energy?
Which energy source can be called a green energy source?
Explain: Fossil energy is not an example of green energy.
SCERT Maharashtra solutions for Science and Technology Part 2 [English] Standard 10 Maharashtra State Board 5 Towards Green Energy Give scientific reasons [Pages 20 - 21]
Give scientific reason.
The schematic of a turbine also varies according to the type of power generation.
Give scientific reasons.
It is absolutely necessary to control the fission reaction in nuclear power plants.
Give scientific reasons:
It is possible to produce energy from mW to MW using solar photovoltaic cells.
Give scientific reason.
Hydropower, solar energy and wind energy are called renewable energy.
Give scientific reason.
Energy saving is a need of the hour.
SCERT Maharashtra solutions for Science and Technology Part 2 [English] Standard 10 Maharashtra State Board 5 Towards Green Energy Write short notes [Page 28]
Write a short note.
Lake Tapping
Write a short note.
Nuclear Power Plant
Write a short note.
Problems due to nuclear power plant
Write short notes.
Green energy
Write a short note.
Connection of solar cells
SCERT Maharashtra solutions for Science and Technology Part 2 [English] Standard 10 Maharashtra State Board 5 Towards Green Energy Distinguish between [Pages 28 - 29]
Explain the difference between conventional and non-conventional sources of energy.
Distinguish between the following.
Thermal power plant and Solar thermal power plant
Distinguish between the following.
Electricity generation from solar cells and solar thermal power generation
Distinguish between the following.
Series and parallel connection of solar cells
SCERT Maharashtra solutions for Science and Technology Part 2 [English] Standard 10 Maharashtra State Board 5 Towards Green Energy Answer the following questions [Pages 35 - 36]
Observe the given diagram and answer the questions given below.
- Explain the diagram.
- Answer the questions with the help of a diagram.
- What is the name of machine given in the diagram.
- Write down the function of this machine in short.
- How does it gets/forms the motion.
Observe the given diagram and answer the questions.
- Which type of energy is generated?
- This power station depends on which factors?
- Is it environment friendly?
Complete the table.
| Advantages of hydroelectric power plant | Disadvantage of hydroelectric power plant |
Complete the following flow chart.
Complete the following flow chart.
Complete the following flow chart.
Draw the flowchart for the given power stations.
Thermal energy based electric power plant
Draw the flowchart for the given power stations.
Power generation plant on energy of natural gas
Explain the stages in electric generation from the given schematic diagram.
Draw the schematic diagram of natural gas power plants and answer the following questions.
Where is the power plant based on natural gas in Maharashtra?
Why is there less pollution by natural gas power plants?
Give the example of eco-friendly electric power generation plants.
Solar reflectors are important, why?
Complete the table.
| Limitations of Solar energy | Limitations of Wind energy |
Why are absorbing/controlling rods used in atomic reactors?
SCERT Maharashtra solutions for Science and Technology Part 2 [English] Standard 10 Maharashtra State Board 5 Towards Green Energy Solve the following questions. [Page 44]
Prepare a table showing the names of major wind power generation projects in India, their location and power generation capacity.
Solutions for 5: Towards Green Energy
SCERT Maharashtra solutions for Science and Technology Part 2 [English] Standard 10 Maharashtra State Board chapter 5 - Towards Green Energy
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Concepts covered in Science and Technology Part 2 [English] Standard 10 Maharashtra State Board chapter 5 Towards Green Energy are Energy and Use of Energy, Generation of Electrical Energy, Power Plants Based on Nuclear Energy, Power Plants Based on Natural Gas, Electric Energy Generation and Environment, Electricity Generation using Solar Energy, Electricity Generation using Wind Energy, Power Plant Based on Thermal Energy, Electricity Generation using Hydroelectric Energy, Solar Photovoltaic Cell, Solar Thermal Power Plant.
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