Hey. this is a question of class 8 , science. whoever will answer this will get 80 points and a heart and 5 ratings.
1. What is meant by the destructive distillation of coal ?
2. Mention two uses of coke.
3. Is crude oil a mixture or a compound ? Explain.
4. Name the various fractions / products obtained from crude oil after distillation. 5. Give a few suggestions to save petroleum for future generations.
Answers
Answer:
1. The process of heating coal in absence of air is known as Destructive Distilation of coal.
2. i) It is used as fuel
ii) It is used in iron ore smelting
3. Crude oil is a mixture because it is combined of comparatively volatile liquid hydrocarbons (compounds composed mainly of hydrogen and carbon), though it also contains some nitrogen, sulfur, and oxygen.
4. Petrol, Kerosene, Lubricating oil are most common product after distillation.
5. i) By car pooling
ii) By minimizing uses of cars, bikes.
iii) Riding bicycles for short distances.
Answer:
1. The process of heating coal in the absence of air is called the destructive distillation of coal. Coal contains a number of elements such as carbon, hydrogen, oxygen, nitrogen and sulphur. When coal is heated in the absence of air, a number of products are obtained.
2. -Coke is used in the manufacture of steel.
-It is used in the extraction of many metals.
3. Crude oil is a mixture of comparatively volatile liquid hydrocarbons (compounds composed mainly of hydrogen and carbon), though it also contains some nitrogen, sulfur, and oxygen. Those elements form a large variety of complex molecular structures, some of which cannot be readily identified.
4.These products of fractional distillation include, petrol (or gasoline), naptha, kerosene, diesel oil, lubricating oil, fuel oil, grease and wax, and some residue.
5.By doing carpooling. By less use of cars and motorcycles. By riding cycle. By this we save petroleum for future generations.