Advertisements
Advertisements
Question
Name the products of combustion of fossil fuels like coal and petroleum products. How do they affect us and our environment?
Solution
Carbon dioxide, sulphur dioxide, nitrogen oxide and water are produced by combustion of fossil fuels like coal and petroleum products. Their incomplete combustion produces carbon monoxide.
All of them, except water, are harmful for us and our environment. For example, sulphur oxide and nitrogen oxide, when mixed with water, cause acid rains. Increase in the carbon dioxide concentration in air causes greenhouse effect.
APPEARS IN
RELATED QUESTIONS
Name two fossil fuels.
Which fossil fuel is conserved when we use bicycle for covering short distances instead of a motorbike?
There are two important fuels A and B both of which are extracted from deep inside the earth. Fuel A is a thick, dark, foul smelling liquid whereas fuel B is a black solid. Combustion of both the fuels produces products, C, D, E and F. The product C makes the rainwater only slightly acidic but it is mainly responsible for causing global warming. The product D is neither acidic nor basic. It is harmless and does not affect the environment in any way. Both E and F attack breathing system of humans and are mainly responsible for causing acid rain. In addition to combustion of fuels A and B, the product F is also formed when lightning occurs in the sky.
(a) What are (i) fuel A, and (ii) fuel B?
(b) Name (i) C (ii) D (iii) E, and (iv) F
(c) What is the process of formation of F during lightning known as?
(d) Which fuel is supposed to be exhausted sooner : A or B?
(e) Which fuel is mostly used for generating electricity at thermal power plants?
While discussing about coal and petroleum a teacher told his students about PCRA's (Petroleum Conservation Research Association) guidelines to save the fossil fuels while driving vehicles. Deepa was going to her school with her mother who was driving car. At the traffic signal, when the light was red, Deepa suggested her mother to switch of the engine.
After reading the above passage, answer the following questions :
(a) Fossil fuels are natural resources, then why do we need to conserve them?
(b) List any two ways of saving the fossil fuels.
(c) State two values exhibited to Deepa.
List the products of combustion of fossil fuels. What are their adverse effects on the environment?
What is known as destructive distillation? Write about the products obtained from fractional distillation of petroleum.
Which of the following is not a constituent of petroleum?
The underlined word in the following sentence have been jumbled up. Write them in their correct form.
Umpetlore is a fossil fuel.
Write some important uses of the various constituents of petroleum.
Give reason for the following:
Petroleum is considered a harmful source of energy.
