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 lightening occurs in the sky.- What are (i) fuel A, and (ii) fuel B?
- Name (i) C and (ii) D (iii) E, and (iv) F
- What is the process of formation of F during lightening known as?
- Which fuel is supposed to be exhausted sooner: A or B?
- Which fuel is mostly used for generating electricity at thermal power plants?
(a) Fuel A is petroleum as it is a thick, dark, foul-smelling liquid, and (ii) fuel B is coal as it is a black solid.
(b) (i) C is carbon dioxide as it makes the rainwater only slightly acidic but it is mainly responsible for causing global warming.
(ii) Product D is water as it is neither acidic nor basic.
(iii) Produce E is sulphur dioxide and
(iv) Produce F is nitrogen oxide as these products attack the breathing system of humans and are mainly responsible for causing acid rain.
(c) Nitrogen fixation is the process of formation of F (nitrogen oxide) under lightening condition.
(d) Fuel A, petroleum, is supposed to be exhausted sooner.
(e) Fuel B, coal, is mostly used for generating electricity at thermal power plants.
Related Articles
- The material A is fossil fuel which is extracted from the earth. It is said to be formed from the buried, large land plants by a very slow process B. when A is heated in the absence of air in a process called C, then it gives three products D, E and F. The product D is used as a reducing agent in the extraction of metals, the product E is used as an industrial fuel whereas the product F has been traditionally used for metallic the roads.(a) What could material A be?(b) What is (i) physical state, and (ii) colour, of A?(c) Name the processes (i) B, and (ii) C.(d) What are (i) D, (ii) E, and (iii) F?
- (a) What is a fuel? Give five examples of fuels.(b) What are the characteristics of an ideal fuel (or good fuel)? (c) The calorific value and ignition temperature of fuel A are 55 kJ/g and 80°C, respectively. These values for fuel B are 80 kJ/g and 10°C, respectively. On burning, the fuel A produces CO2 and H2O while the fuel B produces CO2, CO, and SO2. Give three points of relative advantages and disadvantages of these two fuels.
- When the material A mined from the earth is heated strongly in an insufficient supply of air, it produces a solid fuel B which consists mainly of carbon. When another material C obtained from trees is heated in an insufficient supply of air, it produces another solid fuel D which also consists mainly of carbon. Name A, B, C and D.
- Fill in the following blanks with suitable words:(a) Fossil fuels are…………and…….(b) Coal contains mainly……………(c) The slow process of conversion of dead vegetation into coal is called……………(d) The process of separation of different constituents from petroleum is called………………(e) The least polluting fuel for vehicles is…….(f) The burning of fossil fuels causes air………….and also leads to global……………
- The two glands A and B which occur in pairs, are present in the endocrine system of humans. The pair of glands A is found only in females whereas the pair of glands B occurs only in males. The glands A make and secrete two hormones C and D whereas glands B make and secrete only one hormone E. In addition to hormones, glands A makes gametes F whereas glands B making gametes G.(a) What are glands A?(b) What are hormones C and D?(c) What are glands B? Name the hormone E.(d) What are gametes (i) F, and (ii) G?(e) Which event in the life of males and females is associated with the secretion of hormones C, D and E?
- Fill in the blanks.(a) Fossils fuels are ____ , ____ and ____(b) Process of separation of different constituents from petroleum is called ______(c) Least polluting fuel for vehicle is ______
- Gas A, which is the major cause of global warming, combines with hydrogen oxide B in nature in the presence of an environmental factor C and a green material D to form a six carbon organic compound E and a gas F. The gas F is necessary for breathing.(a) What is gas A?(b) What is the common name of B?(c) What do you think could be C?(d) What is material D? Where is it found?(e) Name the organic compound E.(f) What is gas F? Name the natural process during which it is released.
- The substances W is a fossil fuel. It occurs deep below the ground in certain areas of the earth. Another fossil fuel X is found trapped above the deposits of W. when W is subjected to a process called Y, then a number of different products are collected at different temperature ranges which are put to different uses. A special grade of product z obtained in this way is used an aviation fuel in jet aero planes.(a) What are (i) W, and (ii) X(b) what is the physical state of (i) W, and (ii) X?(c) Name the process Y?(d) Name the product Z?
- (a) What are fuels? Name any two common fuels.(b) State any four characteristics of an ideal fuel(or good fuel).
- What is a fuel? Name two liquid fuels.
- When the solid A is added to water, it dissolves with the evolution of a lot of heat and making little explosions to form two products B and C. The properties of products B and C are entirely different from those of solid A as well as water. Moreover, products B and B cannot be reconverted into solid A and water. When another solid D is added to water, it dissolves with the absorption of a little heat to form a product E which cools down. The product E shows the properties of both, solid D as well as water. Moreover, product E can be converted into solid D and water.(a) What type of change occurs when solid A is dissolved in water? Why?(b) What type of change occurs when solid D is dissolved in water? Why?(c) Name a metal which you think could behave like solid A. Also, name the products B and C.(d) Name the solid D if it is the one which is used in making ordinary dry cells.(e) Name the process by which D can be recovered from E.
- In which zone of a candle flame:(a) partial combustion of fuel takes places, and(b) complete combustion of fuel takes place?
- Calorific value and ignition temperature of fuel X are 75 kJ/g and 20°C respectively. These values for fuel Y are 50 kJ/g and 75°C respectively. On burning, the fuel Y produces only CO2 while fuel X produces CO2 and CO. Which of the two is a better fuel? Give two reasons to support your answer.
- The person A has only B chromosomes in all its gametes. On the other hand, another person C has chromosome D in half of gametes and chromosome E in the other half of gametes. When chromosomes B and D combine during fertilisation, a female zygote results. On the other hand, combination of B and E chromosomes produces a male zygote.(a) What are chromosomes (i) B (ii) D, and (iii) E? (b) Out of B, D and E, which two chromosomes are of the same type? (c) Which chromosome is smaller in size? (d) What is the general name of chromosomes such as B and E? (e) Out of the two persons A and C, which one is (i) male, and (ii) female?
Kickstart Your Career
Get certified by completing the course
Get Started