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Explain the meaning of the following symbol:
Concept: Environmental Conservation and Biodiversity
State whether True/False:
The 'Devrai' reserved in the name of God in various places is required in the present time as well.
Concept: Environmental Conservation and Biodiversity
What is the full form of UNEP?
Concept: Environmental Conservation
What is biodiversity?
Concept: Environmental Conservation and Biodiversity
Complete the following table taking into account the relation between the entries in three columns:
| Air pollution | Water pollution | Soil pollution | |
| Components | Gases: CO2, CO, Hydrocarbons, Sulphur, NOx, Hydrogen sulphides etc. Solid: dust, ash, carbon, lead, asbestos, etc. |
||
| Source | Industrial wastes, domestic wastes, sewage, chemicals discharged from industries, pesticides used in agriculture. |
||
| Effect | Soil erosion, retarded growth of plants/ crops, Nutritional deficiency etc. |
Concept: Environmental Conservation
Match the correct pair:
| Column 'A' | Column 'B' | ||
| (1) | Forest Conservation Act |
(a) | 1986 |
| (b) | 1980 | ||
| (c) | 1970 |
Concept: Environmental Conservation
Write four adverse effects of radiations on human body.
Concept: Environmental Conservation
Complete the flow chart:
Concept: Threatened Species
Complete the flow chart:
Colour of the pages in Red List of Endangered Species.
Concept: Threatened Species
Which of the following is used in solar cooker to harvest the solar energy?
a) Solar panels
b) Silicon cell
c) Mirrors
d) Glass lid
Concept: Electricity Generation using Solar Energy
Observe the connections of cells shown in the following images.
i. Which connection will give maximum potential difference?
ii. Give one advantage and one disadvantage of this energy.
Concept: Electricity Generation using Solar Energy
Read the information given below and solve the questions based on it.
Electric energy is produced in various ways like hydroelectric, wind power, Solar energy, bio-fuel, etc. These energy sources are inexhaustible, sustainable. Besides, it does not cause any environmental problem.
i. Above information is about which type of energy?
ii. Whether the fossil fuel is an example of this energy?
iii. Draw the flow chart of production of electric energy.
Concept: Electricity Generation using Hydroelectric Energy
Write the correct option from the given multiple options.
Which of the following is not the source of green energy?
Concept: Energy and Use of Energy
Answer the questions with the help of picture.
A) Which type of energy is produced?
B) This power plant is based on which energy source?
C) Is this power plant eco-friendly? How?
Concept: Electric Energy Generation and Environment
Give scientific reasons:
It is absolutely necessary to control the fission reaction in nuclear power plants.
Concept: Power Plants Based on Nuclear Energy
Give scientific reason
It is possible to produce energy from mW to MW using solar photovoltaic cells.
Concept: Electricity Generation using Hydroelectric Energy
Re-write the statement by selecting the appropriate option.
The solar lamp uses the ................... energy.
Concept: Electricity Generation using Solar Energy
Answer the questions by observing the following figure.
A) Write the name of the device shown in the accompanying diagram.
B) Write briefly the work of this device.
Concept: Generation of Electrical Energy
Observe the figure and answer the questions given below.
a) Name the reaction.
b) Where is this reaction used?
c) Which element is used in it?
Concept: Generation of Electrical Energy
Make a table based on forms of energy and corresponding devices:
| Forms of Energy | Devices | |
| a. | Electric | _________ |
| b. | Mechanical | Sewing machine, Bicycle |
| c. | Thermal | __________ |
| d. | _________ | Solar cooker, Solar heater |
Concept: Electricity Generation using Solar Energy
