Here we are providing 1 Mark Questions for Economics Class 12 Chapter 9 Environment and Sustainable Development are the best resource for students which helps in class 12 board exams.
One Mark Questions for Class 12 Economics Chapter 9 Environment and Sustainable Development
Question 1.
Give two examples of biotic elements.
Answer:
Examples of biotic elements include air, land, water, etc.
Question 2.
Name any two greenhouse gases.
Answer:
Carbon dioxide and methane are greenhouse gases.
Question 3.
What causes skin cancer in humans?
Answer:
Exposure to ultraviolet (UV) radiation causes skin cancer in humans.
Question 4.
Name the important mineral reserves in India.
Answer:
The important mineral reserves in India are bauxite, copper, chromate, diamonds, gold, lead, lignite,manganese, zinc, uranium, etc. .
Question 5.
List the major contributors to air pollution in urban India.
Answer:
The major contributors to air pollution in urban India are:
(i) Vehicles
(ii) Industries
(iii) Thermal power plants
Question 6.
Write two features of sustainable development.
Answer:
Features of sustainable development are:
(i) It increases real per capita income and quality of life.
(ii) It helps in reducing pollution.
Question 7.
How can solar energy be converted into electricity?
Answer:
Solar energy can be converted into electricity with the help of photovoltaic cells.