REFERENCE
育敎僑華頁三第張七第日十初月正年子壬歷夏
WAH KIU YAT PO
郭日僑華
CITY
1972英文中學會考試題預習專欄
(3) 34
各道英文書院主編
化學科(十七)
Chémistry (17)
Which of the followi”g substances
is/are compound(s)?
gon water -
2: water gad
3. stora
6. 100
5. coal go
(a) 1 only
(B) 3 and 5
(C) 1, 2 and
(D) 3 and 4
(B) mons of then.
(2) Hitrogen can be obtz 120d by heating
sodina nitratë
sodium nitrite
Sanonźna nitratë.
a mixture of emaonius nitrate ang Bodius chloride
(2) ■ dixture of sodium nitrite an:
Damonium chloride.
The colability of a substance 4:10.
301 30°C. How many granges of
are required to prepare 200
of a enturated solution at 30 C7
c) 80.6.
46.2
120 m.
(4) Which of the following substanos.
deliquescent?
Concentrated sulphuric acid.
sodium sulphate dalcium nitrate
calcium chloride
anhydrons oodder, sulphate":
(5) Which of the following netais donn
· not dissolve in dilute hydrochlaris moid?
(A) Aluminann
(B)iend
(C) Tine
calcium
(E) ALIASZminn
((6) A certain weight of a metal oan cOR-
bine with 0,072 grammes of hydrogen and the same weight of the metal can also displace 1.25 gm. of another Detal 1. ke equivalent wright of
1.25 24.322
25.4
-none of the
HALL
四期星日四廿月二年二七九一公年一十六國民中
Which of the following is soid salt?
(P) NROL
8
(2) Gr2(50)3
(2) HF
GuCO2 • Cu(OH),
(8) Whion can be completely rasuced by
heating in a stream of hydrogen?
"sodius peroxide" aluminium oxide
mingmenna um oxide (8) land oxide
sino oxide
(9) Which pair of mtonio mumber would
represent elements of similar chai 1oal nature?
(P) 2, 12 (Q) 4,14 (R) 7, 13
8, 10 11 19
(10) & container can hold 88 gm. of co
at F. T.P. How any gramos of nit- rogen can it hold under the sans con- ditions?
56. gm
32 gm 96
(11) Vapour densities of oxygen and oran
orine are respectively 16 and 36. In 2 minutes 5 seconds, 500 0.0. of chlorine diffuses through a poronE
plates the time required for 300 9.0 of oxygen to diffuse through the sane plate will be1.
30 000.
40 sec.
50 sec.
S 1 Minute
? minute 2.5 seconds
(12) HKAN Visible changes are seen when
a piece of sodium is dropped into sold water?
1. The metal floats on the surface. 2. It selta to a silvexy ball.
3. It darts all over the carface or By the water.
4. It catches fires
Efförväzcenso cocars
all sxopt all except
all except only 5
12.
1972
試題預習專欄
英文科(十七)
一許藩芳一
ENGLISH (17)
Model Answers
1. I did not need to come
yesterday
The world was created millions of years ago. When I got there, I found that John as well as his brothers was waiting for me.
This valley 19 inhabited by the natives. 2
10.
We shut the windows Les the children should catch cold.
He did not come, it was
not necessary for him to do go.
(Combine by starting with "He did")
I mist leave now.
(Start with "It")
He
He was very cruel. turned his brother out. (Combine by using "of him”
If you do not study hard
ou will fail in the examination,
[Start with "Study hard")
If you study hard you will succeed in your attempt. (Use "and")
1972英文中學會考試題預習專欄 臺
物理科
A206 (17)
(HE)))
(29(a) Lot the B.M.F. of A De I VOLTA the E.K. F. of Babe I volta
and the resistance of the circuis ba. Rohana
When the cells are in izno sado
ourrant, is 2.4 sapai
Suppose the gaivanoneter is comme Ka'a in parallel Korous" a repistance R
The .. between two points à and B. between A and B may be an great ne 1 volt, bus the currant in the instru- hant must not szóned 0.001 amp. Applying Oha's Law, to the voltasser
0.001
TENANTAN DE
ONE
resistanc
whence resistance:
But the resistance of the itself is 20 ods.
Henos if a resistance y or you: ahm-is connected in series with the instru- asn't, it can be used as a voltester. reading up to. 1 volt.
When the cell Ain reversed; current is 0.6 amp.
break up that i may near
you clearly.⠀
Into the river tell the boy. Every boy and every girl
was laughing.
2.
What the witness nad stated was unbelievable.
10. John has received a present from his father, who is living in England.
That year my grandmother took her eternal rest, and my father quitted his job in the government. It was then indeed a time when "misfortunes never come singly". Leaving Peking, 1 came to Chuichow, where I Joined my father, intending to go with him to our native place to attend my grand mother's funeral. I saw my father and found that the whole house was at aixes and sevens. At the thought of my grandmother, I could not help shedding tears. Father said, "Don't worry since it is our fate. Perhaps, destiny will not so cruel as to put an end to us,"
Exercise 17.
A. Re-write the following sentences
as directed.
As soon as the bell ráng, the boy rushed out of the classroom. (Use "no-so
sooner"
You are taller than your father.
(Use not 90
28")
After the guest had left the hall, the host retired to his bed-room," (Use "having"}
It was a fine morning. We went out for a long walk. (Combine, by using "being")
He came very early.
was not necessary for him to do so..
(Combine by starting with "He need").
Enelian to Chinese
Fewer and fewer people are spending the whole of their working lives in the Solace where they were born.. Not only do they go to work in different parts of their own country there are many who go abroad. In every major city of the world there are now thousands of foreig- ners, and a very small proportion of them are tourists.
The reasons, ror this are many, and vary from person to person. Many highly-educated. men and women more than ever before – are appointed to represent their home govern- ments in other countries, as,
iolomats, trade-commissioners:
or to serve in colonial government, International trade has expanded tremend- ously and the richer people everywhere are eager to buy the special products of other nations. In almost every... main street you can see American, British, German, Italian and Japanese cars. Much of the machinery in the factories has been made overseas; and there is a very great demand for smaller.. personal luxuries, Ta
consequence of this, countless men and women go abroad to organise and encourage the sale of their firms products, and banks are established tổ. handle the financial,
arrangements.
Anumber of people go. abroad from a sense of vocation. They feel that they nave certain talents which, ought to be used for the benefit of needy peoples, Africa, Asia. and South:
America therefore, a great deal of educational, medical, and social work is being done by devoted professional people, many of whom desire no financial reward; and are willing to accept living conditions. inferior to those they could command at home. Most of these people are diligent in / training local. people in une hope that some day they will he thle to carry on the work.
(1)
·(2)
The ratio of S.H.F. of A to B.1 315
Let the internal resistance and 3.M.F. of each cell be I ohar
and 2 volta respectively.
5.x.F. of C = 600)
Internal resistance of p = 60%
E.E.F. of D = 452
Internal resistance = 452
When a wire of 180 okes are connected sezóna Gi
"Current': IN TRS Wire
608
60 + 180
60180
mis voltage balances E.A.F. OT DE no current flown between the two batteŻICE:
600
2100 - 450
60r 180
180
45(607 +180)
The resistance of C in thereToro 60% or 60 ohms
(30)
A voltme tor
20:chme
0.001 aspe
0.999 aspe
2-obas
The current in the main OZZOUL E
may be as great as 1 amp, but the our-- rent in the galvanonster must not sxseed® 0,001 aäpa Henes a shunt resistance must be connected in parrallel aeTORE- the instrument. The shunt will pass the remaining 0.999 amp..
Applying Ohm's Lav to the gaiýano meter. p.d, between C and D - 20 x 0.001 volta
Again, applying Ohm's Law to the shunt R, pid, between C and D * 0.
volta
0.999R - 20 x 0.001
Whezoe
20 x 0.001
0.999
0.020020. ona.
Thus the instrument must ba shunted, wita resistance of 0,020020 cha for use an
(31)(a) Two lampa (joined in serios Lave a resistanos of 600 ohas. -- When connected inparallel they have a Tesistance of 95 ohms. Cal- sulate the Tamiatance of each lamp.
A battery drives a current through a resistance coil or 10 ohms, placed in series with
When the resistance Lis shunted by a resistance of 1ohm, the current through ene 10. oh 0011 is halved. What is the resistance of the battery7 If the current in the ghunt is 9/10 amp. What is the E.X.F. of the battery?
(32)(a) Define rezistiviAY
(b) The maximam current UANG HU, MAR
seter of 0.1 on resistano can read la 5 aap. Determine what length of copper wire MUS connected in parallel with the Ammeter so that it can be empl- oyed toʻmOBSUED A
bent of 15 amps.
tance of copper 1.3 x 10
Diameter of siz