Question
Write a short note on Electrical energy generation and environment.

Answer

The energy obtained through the fossil fuels as well as nuclear energy can cause degradation of the environment. If such energy sources are used, they can cause harm to the environment.

(1) The burning of fossil fuels cause air pollution. The incomplete combustion of fossil fuels cause release of carbon monoxide. Some more toxic gases and soot particles cause various respiratory diseases. The carbon dioxide produced is creating global warming and climate change. The nitrogen dioxide released through burning is responsible for acid rains.

(2) Fossil fuels are limited. They are getting fast depleted. It has taken millions of years for the fossil fuels to form. The exploration of such fuels also cause environmental degradation and marine pollution too.

(3) In production of nuclear energy, there is a great risk of accidents. The safe disposal of nuclear waste is also a problem.

(4) Hydroelectric power from water reservoirs, wind power from wind, solar energy from sun and electricity from biofuels are eco-friendly alternatives.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

There are two similar glands P which are located on top of two similar organs Q in the human body. P are often called the emergency glands and they secrete a hormone R into the blood stream. R is secreted in large amounts when a person is frightened. It brings about temporary changes in the body which allow a lot of substance S from the liver to go into the blood to provide a lot of energy in a very short time. This helps a person to fight back or run away from the frightening situation.
What are P, Q, R and S?
When a fertilised egg E formed in the oviduct of a human female divides repeatedly to form an embryo, the embryo gets implanted in the thick and soft lining of the uterus. After this a disc-like special tissue T develops between the uterus wall and embryo through which all the requirements of the developing embryo (and foetus) are met from the mother's body, The embryo is connected to the tissue T through a string like structure S.
  1. What is the other name of fertilised egg cell E?
  2. What is the name of tissue T?
  3. Name the string-like structure S.
  4. Name two substances which pass from mother's blood to embryo through tissue T and, one type of substance which passes from embryo to mother's blood.
  5. What happens to S when the baby is born? Why?
When the branches of a plant growing in the field are pulled towards the ground and a part of them is covered with moist soil (leaving the tips of the branches exposed above the ground), then after some time new roots develop from the parts of branches buried in the soil. On cutting these branches from the parent plant, new plants are produced from the cut parts of branches which had developed roots.
  1. What is this method of propagation of plants known as?
  2. What type of branches should a plant have to be able to be propagated by this method?
  3. Name any two plants which are grown for their flowers and propagated by this method.
  4. Name any two plants which are grown for their fruits and propagated by this method.
  5. Name one plant which gets propagated by this method naturally by forming runners (soft horizontal stems running above the ground).
Observe the disaster cycle given below and explain each aspect of the disaster of earthquake.
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.
Questions and Answers:
(1) Above information is about which type of energy?
(2) Whether the fossil fuel is an example of this energy?
(3) Draw the flow chart of production of electric energy.
An element has its electron configuration as 2, 8, 2. Now answer the following questions:
(i) What is the atomic number of this element?
(ii) What is the group of this element?
(iii) To which period does this element belong?
(iv) With which of the following elements would this element resemble? (Atomic numbers are given in the brackets) N (7), Be (4), Ar (18), C1 (17)
Identify the law shown in Fig. 1.7 and state the three respective laws. (Practice Activity Sheet –3)
Maharashtra Board Class 10 Science Solutions Part 1 Chapter 1 Gravitation 30
In the above circuit, if the resistor is replaced by a motor, in which form will the energy given by the cell get transformed into?
What is meant by the 'orbit of a satellite? On what basis and how are the orbits of artificial satellites classified?
Using the law of conservation of energy, obtain the expression for the escape velocity