Please select a subject first
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Give scientific reason.
Energy saving is a need of the hour.
Concept: Energy and Use of Energy
Write a short note.
Lake Tapping
Concept: Electric Energy Generation and Environment
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?
Concept: Electricity Generation using Hydroelectric Energy
Complete the table.
| Advantages of hydroelectric power plant | Disadvantage of hydroelectric power plant |
Concept: Electricity Generation using Hydroelectric Energy
Complete the following flow chart.
Concept: Generation of Electrical Energy
Draw the flowchart for the given power stations.
Power generation plant on energy of natural gas
Concept: Power Plants Based on Natural Gas
Complete the stages in electric generator using wind energy.
Concept: Electricity Generation using Hydroelectric Energy
Write limitations in an electric generator using wind energy.
Concept: Electricity Generation using Wind Energy
Complete the following table taking into account the relation between the entries in three columns:
| I | II | III |
| Coal | Thermal energy | Thermal plant |
| Uranium | ______ | Nuclear power plant |
| Water reservoir | Potential energy | ______ |
| ______ | Kinetic energy | Wind electricity plant |
Concept: Generation of Electrical Energy
When neutron is bombarded on atom of Uranium-235, it absorbs the neutron and converts into ______.
Concept: Power Plants Based on Nuclear Energy
Observe the figure and label it properly:
- What is the figure related to?
- Why are reflectors used?
- Draw a flow chart showing different stages in such a process.
- How is the process used to generate electricity?
- What other method can be used to generate electricity using the same energy source?
Concept: Electricity Generation using Solar Energy
The Hydroelectric capacity of Koyna dam is ______.
Concept: Electricity Generation using Hydroelectric Energy
Answer the following questions from figure:
- With reference to point B, potential energy of how much water reservoir in the dam will be converted into kinetic energy?
- What will be the effect on electricity generation, if the channel taking water to turbine starts at point A?
- What will be the effect on electricity generation, if the channel taking water to turbine starts at point C?
Concept: Electricity Generation using Wind Energy
Atomic power plant in Maharashtra is ______.
Concept: Power Plants Based on Nuclear Energy
Observe the given picture and answer the questions.
Questions:
- Identify the given diagram.
- What is the source of energy in this project?
- Why this source is supposed to be ecofriendly?
Concept: Electricity Generation using Wind Energy
Write in brief about progressive changes in animal classification.
Concept: Criteria for New System of Classification > Grades of Organization
Re-write the statement by selecting the appropriate option.
Due to which similar characteristic honey bee and cockroach are included in the same phylum?
Concept: Non Chordates (Invertebrata) >> Phylum: Annelida
Identify the class of the animal shown in the figure and write any two characteristics.
Concept: Non Chordates (Invertebrata) >> Phylum: Echinodermata
Write the correct co-relation:
Annelida: Earthworm :: Platyhelminthes: _______
Concept: Criteria for New System of Classification > Grades of Organization
Which of the following is a hermaphrodite animal?
Concept: Non Chordates (Invertebrata) >> Phylum: Hemichordata
