TERMS PATACEAERO WAH KIU YAT PO
郭日僑華
三期星
日五廿月三年〇七九一番公年九十五國民中 育僑華
LO英文中學會考試題預習專欄 中學入學試試題預習專欄
英文科
F. If
9. Though
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R. Because:
I were you,
would not
9. DCCCA
S. Where
T. Since
buy that oar,
16
CURKISTRY (21)
QUESTIONS
▲ BassZogous series of orgaato nešpounds is one:
(A) first poster containa ezly ons carbon atom
Ethors is the occurrands of isoNOTICE.
there is a fized ratio between the number of sarbon and hydrogen atome.
(D) the physical properties vary in a regular
meanor down the series.
(1) the shemical proporties vary in a regular
Banner down the serio8.
The number of isomera in the saturated hydrocarbon
tme
res
3. When phosphorus pentaphloride is added to aoatio
agid,
20.reaction will occur.
okleroacetio noids will be formed, aestyl chlorida will be formed,
ethyl sklorida, phosphoruus oxychloride and Aydrogen chloride will be formed,
an addition reaction will sosur.
Whều othylone is shaken with a solution of bromine in carbon tetrachloride,
(A) thors is no viscible change in the absence of
wunlight,
ethylene is oxidised.
a vicinal dibromide is formed by addition, guminal dibromide is formed by addition. the kronofora räaotion
Ordinary air contains 78% of nitrogen, 21% of
gon and 1% of argon by volume, thus,
the waighte of nitrogen, oxygen and argon it a given volume of air are in the ration of (70/28) (21/32):(1/40). Whome
"und Ax":
"2" 2
are 28, 32 and 40 times as heavy an the ♬
(B) the partial pressures of nitrogen, oxygen and
argon in air are 0.78, 0.21, and 0.01 atmosphere, under all conditions.
(0) the numbers of molecules of I. 0, and Ar in
a givon volume of air are in the fatio. 78121 £1%
(D) the total pressure of air must be 1.00
atmosphere.
(E) thare can be no relevant relationship between,
the constituents,
Answer to Previous Exercises
SECTION
:I:
∙1.A. 2.B
3.D 4.4 5.B
tried 2. was 3. began
5. entered 6. was
4. came
7. stepped 8. started
10. mustn't. waste
9 want
who your. She
2. him
3. his
4 they
6. She 10. I
7. you
8. They
themselves
herself
2. himself itself.
3. yourself
SECTION
(multiple choios)
Choose the beat answer and draw a firm lina soross
the right box.
A. difficult
B. difficulty
ABCDE
1. Foreigners often find G. most difficult 1.00000
D. difficulties 3. less difficult
In learning Chiness.
A. guida B. guard
A B C D E }
The thief came under the C. guise
"of a worker:
D. grade 3. garden
3. I did not sat ay dinner because it was
ம்.
A. tasty
B. taste
C. tasting.
D. tasted
tasteleas
I
inside
B. beside
Joseph learna French G. aside Latin,
D. besides
E. outside.
He returned hone Immediately after he
A
receives
B. has received
C. is receiving the letter.
D. had received
E. was receiving
F. for..
4. over
6. It took me R. without
Sunder
T... on:
ABCDE (3.00000
A B C D S
A B C D E
5. 00000
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ten days.
6.
· P Q R S T
are the tools 2.
00000
3. about T. at
II. Read this passage carefully,
Did you know that about two-thirds of the weight of your body is made up of water? If you waigh 90 pounds, the water in your body weighs about 60 pounds. There is also water in your bonsa, your skin and your: hair.
In Jark, we are no used to having plenty of rain that we forget how necessary water is. But you must have heard or read stories about people who died in: the deserts because of lack of water. A person can go without food for many days, even weeks, but he will soon become 111 and die if he goes for two OP three days without water.
Dur body must have five or six pounds of weter every day. This is because our body loses water all all the time. Ta lose water when we breathe out and we have to replace this water in our body. Bach of the following statements is about the
passage. Put stick (
against the sen that is true and a cross i xi against the ons
that is untrue.
wataz in every part of our body.
2. It rains a lot in Java. A
To long water when we breathe in,
About one-third of our body is not made up
"water.
People in the deserts always have plenty of
watar.
6. We shall be ill or die if we have no water
for a few days.
7. Puople in the desorts die because they have
plenty of food.
If you weigh 90 pounds here, you will weigh
60 pounds in the deserta.
Our body loses water day and night.
10. Our body neoda water every day,
If the word ends in "ID" zound, write 11
(*.8. counted ID)
6. The isotopas of sa element,
(A) have identical physical properties
(B) have different chemical preparties
have tho samo number of neutrons in their nusloi
have the mane number of petons in their BESLCi
(3) have the ana total number of neutrons, and
protons in their nuolei
The sulphur atom and the sulphids ion,
(A) hava
tis maze number of electrons (B) havia the sane number of pretons:
(C) have the mamo radi, sam
(D) have the sens obemioal properties
(E) have" the same overall charge
8. During the volumetrie titration of sodium
carbonate against hydrochloric acid, which of the following would serve as the best indicator?
)methyl chlorida
(3) methyl rad⠀⠀-
(C) phenolphthalein.
(D) 11taus
(E) there is no suitable indicator
When metallic copper is added into dilute nitria noid, the gas formed contains a high percentage
Lydrogen
DECORis
finish this work.
To someone we don't know, we and the
P. lovingly. Q.sincerely,
latter with Yours. R. obediently.
8. "Are you thirat
S, truly. Taffectionately.
", "Yes, I am.” g. "No, I don' t": E. "I think so". 2. "I am tired”””
"Yes, you ar
CH2OX, CH CH2CH CR,
XII.CH CHCHCH
P Q R S T 7.00000
n-Hexana
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nitrous oxide
Ektrio oxida
nitrogen diezide
10. In the following reactions, the one that is not
an exidation-reduction reaction is
+ 3,504 in Ba80
(0) 211 =
7,50
(D) * + *20-
(x)
BOLUTIONS
+ Gu80
2000
Successive members of the series differ in compositiom by the increment, CH, are said to form a homologova Bories, Physical properties vary in i regular manner. Thus the boiling point invariably increases with inoressing molecular wdight, and the increment in particulariy preminent in the first few pintors of the sezies, whore the increase in molecular weight represents a large proportion of the total.
The arceber of possible isoneza szem a colSOLL formale of Cij in five. They wil
2-ethylpentme
3-Methylpentane
2-Dimethylbutane
3-Dimethylbutane
This is effectively a substitution of the -OF the carboxylic group by a C1 fram phosphorožis pentaskleride. The equation for the complete. renotion i
C.
CH C0.01 + PCI, - CH CO.Cl + FOC1. не
acetyl chloride
Vicinal dihalide (i.a. attachment of one halogen atom sash to two neighbouring carbon atoms) in always" form when a halogen is added to a double bond; ThmA S
CH
Br2- CH BCBET
V.B. a gominal dihalide is one whare both chalogen atoms are on the same carbon,÷
If the word sada in "D".
wilte D.
(*.g. sound D)
If the word ends in *PL (0.g. mixel 2)
write.
needed
itsjad.
5. brunbed
wicked.
wished
7. noticed
followed
A oorollary of Avogadro's Hypothesis.
Isotopes of an slament have the same atomio number but different uase numbers (or atomis weights
An atom and its ionio species ana be identified by pownessing the same atomic number, because this is a property of the nucleus. However, the chemical properties, the radius and the overall charge" aze different, for the extranuclear electrons are also Avolved.
this is a titration of a weak heno against -- strong asid, a suitable indicster would be asthyl red (as well as methyl orange) whose på sensitivo range is from weakly basiɑ to strongly, acidio, in order. that the end point involved a sharp colour change.
Ordinary dilute nitric acid dissolves copper. readily with evolution of nitric oxide and tracen of other oxidas i
3Cu + 8HXO2 = 3Cu(NO ), + 280↑ + 4H0
With concentratua nitrie aoid, eepper gives mainly. nitrogen dioxide.
This reaction may be regarded, as acidifiontion of the salt (basium peroxide) to yield the weak sold (hydrogen peroride).
All the other four reactions involve changes in oxidatiez number of pertain species and hence ard all exidation-reduction (radox) reactions.
More exercises in multiple choics objectiva tanto,
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