. 1. What is a fuel?
3. Define carbonisation.
5. What is the black gold?
Ans
E. Answer the following questions in one word or a single sentence.
2. Name the type of coal which contains minimum carbon content.
4. Which gas is also known as the town gas?
6. Name the constituents of petroleum used to make road surfaces.

Explanation:

1.fuel is a material such as coal, gas, or oil that is burned to produce heat or power.

3. it is defined as partial oxidation of tissue hydrocarbon compounds if the temperature exceeds 200°C and the tissue is within an oxygen-containing atmosphere.

5.Black gold is an informal term for oil or petroleum—black because of its appearance when it comes out of the ground, and gold because it made everyone involved in the oil industry rich.

2.Lignite: Lignite coal, aka brown coal, is the lowest grade coal with the least concentration of carbon.

4.Town gas Also known as coal gas, and contains hydrogen (H2), carbon monoxide (CO), carbon dioxide (CO2), methane (CH4), nitrogen (N2) and volatile hydrocarbons. It is made by blowing air and steam over an incandescent fuel bed, usually of coke or coal.

6.Bitumen is the petroleum product which is used for surfacing of roads and paints these days.

answer'(basidium)the spore--bearing structure of a basidiomycete is called a basidiocarp; ///

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.