Advertisements
Advertisements
प्रश्न
Fill in the following blank with suitable word :
When a fuel burns in an insufficient supply of air, then some poisonous gas called ......... is also produced.
उत्तर
When a fuel burns in an insufficient supply of air, then some poisonous gas called carbon monoxideis also produced.
APPEARS IN
संबंधित प्रश्न
Kerosene is not a fossil fuel.
Choose one term from the following which include all others :
coal, natural gas, fossil fuels, petroleum
Fill in the following blanks with suitable words :
LPG is a ........... fuel but biogas is not a..........fuel.
Which of the following combination of terms has no fossil fuel?
(a) wind, ocean, coke
(b) kerosene, tide, wind
(c) wood, wind, sun
(d) petrol, wood, sun
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?
Write two disadvantages of burning fossil fuels.
Match the following.
| Octane rating | Diesel |
| Cetane rating | Methane |
| Simplest hydrocarbon | Petrol |
| Peat | Bown in colour |
| Lignite | First stage coal |
What is known as destructive distillation? Write about the products obtained from fractional distillation of petroleum.
What measures would you take to conserve electricity in your house?
Excessive burning of fossil fuels is a major cause of ______.
