-
Оцените следующие высказывания о бутадиене:
А.В молекуле отсутствуют П-связи;
Б.Он обесцвечивает бромеую воду.
1)верно только А
2)верно только Б
3)оба высказывания верны
4)оба высказывания неверны
Ответы 1
-
Верно только Б))) Потому что в бутадиене 2
связи)
-
Автор:
nietoow3u - 6 лет назад
-
0
-
-
Добавить свой ответ
Еще вопросы
-
Вычислить предел: [tex] \lim_{x \to \-0} \frac{tg^2(3x)}{1-cos(4x)} [/tex]
-
Предмет:
Математика -
Автор:
hezekiahgood - 6 лет назад
-
Ответов:
5 -
Смотреть
-
- Структурная формула 2-бром-5-метилгексен-3
-
IV. Выберите правильный вариант.
1. I've just bought ... copy of his latest
book.
a) — , b) a, c) the, d) any.
2. ... in my class likes him.
a) All, b) All pupils, c) All the pupils, d)
Everyone.
3. Jack left ... Paris last week.
a) in, b) for, c) from, d) to.
4. They... yet.
a) didn't arrive, b) haven't arrived, c) hadn't
arrived, d) don't arrive.
5. Turn right... the end of the street.
a) at, b) in, c) to, d) on.
6. Nelly is ... at History than Jane but worse
at French.
a) as good, b) not so good, c) better, d) best.
7. A young man asked if we ...
students.
a) are, b) were, c) have been, d) shall be.
8. I have asked some friends — for tea.
a) to go, b) to stay, c) to bring, d) to drink.
9. Has he ... you of his decision?
a) talked, b) said, c) told, d) spoke.
10. She made her husband ... the tree.
a) to cut down, b) cut down, c) to have cut
down, d) cutting down.
11. When I entered they ... to music.
a) have listened, b) were listened, c) were
listening, d) listen.
12. She spoke to ... person at the party.
a) few, b) a few, c) every, d) many.
13. I ... glasses since I was a child.
a) wear, b) am wearing, c) have been wearing,
d) was wearing.
14. They took a rest after they ... the yard.
a) had cleaned up, b) were cleaning up, c)
would clean up, d) have cleaned up.
15. I knew I'd forgotten ... .
a) somewhere, b) anywhere, c) something, d)
anything.
16. You usually have dinner at home, ... ?
a) do you, b) don't you, c) have you, d)
haven't you.
17. The police haven't got ... information to
catch the robber.
a) some, b) enough, c) another, d) these.
18. I
haven't heard ... you.
a) anyone call, b) anyone to call, c) someone
call, d) someone to call.
19. The news you've brought ... much better...
than last time.
a) is, b) are, c) have been, d) were.
20. I hope I've got ... mistakes in my test
today.
a) little, b) less, c) fewer, d) fewest.-
Предмет:
Английский язык -
Автор:
constancioqqym - 6 лет назад
-
Ответов:
1 -
Смотреть
-
-
ответьте на вопросы which sea is deeper the Black Sea of the Azov Sea
-
Предмет:
Английский язык -
Автор:
xavier - 6 лет назад
-
Ответов:
0 -
Смотреть
-
Топ пользователей
-
Fedoseewa27
35934 -
Devilian
2792 -
Pikachu
2228 -
hobbesbowers
2120 -
kaylynnbarron676
1818 -
女fei
1240 -
yulia-kaplina
1158 -
Poinntt
946 -
Bars
930 -
Queenmagic18
770
How much to ban the user?
1 hour
1 day
100 years