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VII Correct mistakes in the following sentences.

  1. A lot of motor vehicles has petrol engines.

  2. I guess there are a little vehicles with gas engines.

  3. Only a few motor vehicles has mixed fuel engines.

  4. I have too much questions to ask about types of engines.

  5. How much liquid there is in the tank?

  6. There are a lot of carbon in petrol.

  7. Have you got some sand in this bucket?

  8. We haven't got no sand in the bucket.

  9. There are plenty of aluminium in most aluminium alloys.

  10. There is too few petrol left. Let's go to the gas station.

VIII. Translate the following sentences into English using your active vocabulary.

  1. В дизельном топливе много углерода и мало серы.

  2. – Сколько бензина в топливном баке? – Я думаю, около 10 литров.

  3. – Не принесешь ли ты немного масла для машины? – Вот, пожалуйста.

  4. В большинстве алюминиевых сплавах много алюминия и мало меди.

  5. Горючее для четырехтактных двигателей не имеет масла.

  6. В горючей смеси для двухтактных двигателей содержится большое количество бензина и совсем немного масла.

  7. Не можешь ли ты мне сказать, сколько углерода содержится в дизельном топливе?

  8. Сколько углерода содержится в бензине?

Reading and Speaking

I. Scan the text and find all chemical constituents of different fuels.

II. Now read this extract for more information.

There is a lot of carbon (about 85%) in diesel fuel. There is also a lot of carbon in petrol. There is a little hydrogen in both these fuels. But there is little sulphur (about 1%) in diesel fuel and there is no sulphur in petrol. There is a great deal of petrol (about 95%) and a little oil (about 5%) in the fuel mixture for two-stroke engines. There is no oil in the fuel for four-stroke engines. There is a great deal of air (90%) and not much fuel (10%) in the fuel and air mixture.

III. Say if these sentences are true or false. Correct the false ones.

  1. There's a lot of carbon in diesel fuel.

  2. Petrol has a low percentage of carbon.

  3. There's too much sulphur in petrol.

  4. There's a lot of hydrogen both in diesel fuel and in petrol.

  5. There's no oil in the fuel for four-stroke engines.

  6. There's more fuel than air in the fuel and air mixture.

IV. Answer your partner's questions about the chemical composition of various fuels. Choose the right expression of quantity.

Example: a) –How much carbon is there in diesel fuel? –There's a lot of carbon in diesel fuel.

  1. carbon in diesel fuel

  2. sulphur in diesel fuel

  3. sulphur in petrol

  4. carbon in petrol

  5. hydrogen in diesel fuel

  6. hydrogen in petrol

  7. petrol in the fuel mixture for two-stroke engines

  8. oil in the fuel mixture for two-stroke engines

  9. copper in aluminium alloys

little

much

plenty of

a little

not much

some

any

no

a lot of

Activity

I. You are an expert in fuels. Answer your partner's questions about various types of fuels and their composition. Use different expressions of quantity.

II. Study this table and discuss with your partner which type of fuel is suitable for these vehicles: racing cars, passenger cars, motorcycles, lorries, buses.

Fuel

Composition

Price

methanol

37.5% of carbon

12% of hydrogen

50% of oxygen

1.14$

diesel

85% of carbon

0.5% of sulphur

13.5% of hydrogen

0.52$

petrol

74% of carbon

25% of hydrogen

0.65$

gas

100% of natural gas

0.74$

liquid hydrogen

100% of hydrogen

2.17$

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