Предмет: Химия, автор: polina398633

8. Какие типы реакций характерны для предельных УВ? При каких условиях (об-
лучение светом, температура или катализаторы) они легче всего протекают?

Ответы

Автор ответа: nako18604
0

Ответ:

Для предельных углеводородов характерны реакции:

(А) замещения, которые идут по радикальному механизму

К примеру, реакция галогенирования

CH4 + Cl2 → CH3Cl + HCl

(В) горения

CH4 + 2O2 → CO2 + 2H2O

Объяснение:

Характеры

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TEST 2

for the 7th form 4th term Unit 8,9

1.Guess what sport is described:

a game for two people who use rackets, a small soft ball and a low net

A) cricket B) boxing C) tennis D) rugby

2.Complete the sentence:

… is a game invented and developed in England which is nowadays played all over the world.

A) cricket B) football C) tennis D)golf

3. Complete the sentence:

When the children finish their homework, … .

A)we will win the game

B)they will go to the swimming pool.

C)I will go in for sports.

D)he will skate a lot during his winter holidays.

4.Fill in the article:

After you fly to …. Irkutsk, you’ll be able to see …Lake Baikal.

A) -/ the B) the / the C) a / the D) - / -

5. Answer the question:

What does a clown do?

A)He makes people laugh. B)He makes clothes.

C)He makes gloves.

D)He makes clocks and watches

6.Choose the verb:

A long night sleep will … you good.

A) do B) done C) make D) made

7.Answer the question:

Where was a second Olympiad in 1900 held?

A) in France B) in Italy C) in England

D) in Greece

8. Finish the sentence:

If I didn’t know what to do … .

A) I will ask somebody for help.

B) I would ask somebody for help.

C) I shall ask somebody for help.

D) I asked somebody for help.

9.Fill in the verb:

I wish it ... not so cold.

A) was B) were C) will be D) is

10.Fill in the verb:

If Paul ran faster, he …. In our school team.

A) would B) am C) will D) was

11. Fill in the verb:

If you … the match with us, we will drive you back home.

A) see B) saw C) sees D)will see

12. Fill in the verbs:

I … many sports, but my favourite sport always

…. skating.

A) loves/is B) loved/is C) love/ has been

D) love/was

13. Finish the proverb:

One swallow doesn’t … .

A) is half done B)make a right

C) while the sun shines D) make a summer

14.What sport do they belong to?

a stick and a puck

A)football B) cricket C) hockey D) golf

15.Which of these sports are track-and-field events?

A) swimming B)discus throwing C)skiing

D) gymnastics

16.Fill in the gaps to complete the sentence:

Dan never did … his jacket, even in winter.

A) away with B) out C) up D) with

17.Put in the right preposition:

Never point your finger … people. It’s impolite.

A) at B) out of C) against D) to

18.Give it a name:

all things that belong to somebody

A) folk B) a patch C) property D)triumph

19.Fill in the word:

I … people who beat animals!

A) bark B)despite C)stared D)threaten

20.Fill in the word:

You can take … apple from the basket.

A) either B) some C) or D) any

21. Name the grammar tense:

You will have changed your mind by tomorrow.

A. Present Perfect C. Future Perfect Continuous

B. Future Perfect D. Future Continuous

22.Choose the right item:

We always meet on Sunday. Next Sunday we …again.

A)meet B)will meet C)will have met D)met

23.Choose the right word:

Who was the … person to leave the classroom?

A)last B)latest C)late D)later

24.In England men shake … when they meet for the first time.

A)hands B)arms C)fingers D)toes

25.In a warm room ice soon … into water.

A)turns B)rushes C)gets D)sets

12. Fill in the verbs:

I … skating since I … here.

A) do/come B) did/came C) have done/came

D) did/have come

13. Finish the proverb:

Well begun … .

A) is half done B)make a right

C) while the sun shines D) make a summer

14.What sport do they belong to?

a goal and a ball

A)golf B) cricket C) hockey D) football

15.Which of these sports are not track-and-field events?

A) swimming B)discus throwing C)running

D)long jump

16.Fill in the gaps to complete the sentence:

We are eating out tonight and I think you should do yourself …. .

A) away with B) out C) up D) with

17.Put in the right preposition:

Jemma was staring … the window.

A) at B) out of C) against D) to

18.Give it a name:

a small piece of land

A) folk B) a patch C) property D)triumph

19.Fill in the word:

The dog … at mother with her big black eyes.

A) bark B)despite C)stared D)threaten

20.Fill in the word:

There are two cakes on the table. Take … of them.

A) either B) some C) or D) any

21. Name the grammar tense:

A new edition of Longman Grammar has appeared recently.

A. Present Perfect C. Future Perfect Continuous

B. Future Perfect D. Future Continuous

22.Choose the right item:

Where have you been? I … for forty minutes!

A)have been waiting B)am waiting C)waited D)wait

23.Choose the right word:

She is three years … than he.

A)old B)elder C)older D)oldest

24.I am afraid you are standing on my … .

A)hands B)arms C)fingers D)toes

25.When I go somewhere with my granny I always help her to … on and off the bus.

A)turn B)rush C)get D)set

​
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Предмет: Математика, автор: vasylysa020211
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