Question

Answer all the questions.
1) Write down the full form of CNG and LPG.
[1]
2) Why is Petroleum called 'black gold'?
[1]
3) Differentiate between exhaustible and inexhaustible with two examples of each.
[1]
4) Explain the process of formation of coal.
(1.5)
5) Can coal, petroleum and natural gas be prepared in the laboratory from dead organisms? Give reason to support
your answer.
(1.5)
6) Name the following.
[2]
a. The gas emitted when we burn coal.
b. The process by which we obtain coke from coal.
C. The thick black liquid with unpleasant smell obtained when we burn coal in the absence of air.
d. The petroleum constituent used for road surfacing or metalling roads.
7) Fill in the blanks.
[2]
is a fossil fuel which is hard and black in colour.
b. .............is a cleaner fuel.
In India natural gas has been found in Tripura, Rajasthan......... .and in the Krishna Godavari Delta.
d. Petrol and diesel are obtained from a natural resource called ...................
​

Answer 1

1. compressed, natural, gas...

liquid,petroleum ,gas.....

2. why petroleum is referred to black gold? petroleum is referred to as 'Black gold' because when crude soil is extracted from the land is black in colour. people called it gold.. because of oils it value ... it is very difficult to find....

3.In exhaustible resources this resources has ability to renew dances in give period to time.....

exhaustible resources this resources...

cannot be renewd after exsist station

1.)these are non renewable or non replenishable resources )

the required concert vision step to taken so that they can be used in future.....

4. coal formed millions of year ago when the earth was covered with huge swampy forest where plants .gaint ferns, reeds and mossess .grew ....heat and pressure producer chemical and physical change in plant layer which force without oxygen and left rich carbon deposits...

7.2) coal easy dirtiest of oil fossil fuels when Burned it produce emissions that contribute to global warming created acid rain and pollute water clean coal Technology seeks to reduce harsh environment effect using by multiple Technologies to clean coal and contain its emissions....

4. coal and diesel obtained from natural resources petroleum........