Iv-semestri uchun ingliz tili fanidan yakuniy nazorat ishi

1 ___ The main property of oil is its viscosity.
2 ___ Oil that is watery, with high vis, moves easily.
3 ___ Low vis oils are preferred by engineers.
4 ___ The lightest crude oil is almost without color.


Complier: Ishonqulov Sh. U.


NEFT VA GAZ FAKULTETI II-BOSQICH TALABALARINING
IV-SEMESTRI UCHUN INGLIZ TILI FANIDAN
YAKUNIY NAZORAT ISHI


Variant № 9


I. Translate the given words into Uzbek.
1 benefits 2 vapour 3 cost-effective 4 to package 5 density
6 toxic 7 to depend on 8 mixture 9 odor 10 adapted
II. Read the sentences and choose the correct words.
1. The color / odor of that heavy crude oil is almost black.
2. The petroleum’s pour point / color was low.
3. The viscosity / pour point of the petroleum was very thick.
4. Jane covered her nose because the viscosity / odor was so bad.
5. The saturated / unsaturated hydrocarbon could not take any more hydrogen atoms
III. Complete the sentences with one of the following words. Add a/an or make the word plural if necessary.
barrel energy equipment experience layer
1 People working on a drilling rig have to move _____ that is very heavy.
2 _______ of oil is 159 litres. 3 Oil and gas are very important sources of _______.
4 Tom is a geologist with twenty years’ ______.
5 Over thousands of years, dead plants and animals were covered in ______ of mud and sand.


IV. Read the passage and discuss the given questions then choose the correct answers.
Petroleum sometimes contains impurities. These impurities cause the oil to be unusable in its crude state. Oil may contain dissolved hydrogen sulfide and metals. Oil can also contain carbon dioxide. High concentrations of these pollutants contaminate the oil, making it unusable. For example, excess carbon dioxide causes major damage. Carbon dioxide can cause corrosion in vehicles and other equipment. Impurities lower the value of petroleum. That is why it is refined before sale. Many countries have strict oil-refining regulations. These regulations ensure that refining companies eliminate the bad substances. However, even refining the oil may not make it better. This is why engineers test the oil residing in potential drill sites. They must take into consideration whether the oil is worth drilling. The oil may be too contaminated to try to refine. In these cases, the engineers look for a new drilling site.