頁二第張六第日六十月四閏年寅甲籍夏
DE
芮橋榮
化學科(乙)題解(續) 堅道書院王兆女·
Chemistry (B) paper.
Sodium Bicarbonate ionizeg
Bolution according to
YAHOO,
and water ionizes socor to:
H + OH
+ OH
The Hoog and H2O+ (or *) ione combine to: form a weak acid, carbonio acid, whose degree of lonization is small and rama- ina mainly an molecules.
H003
Removal of hydrogen ions (or hydroxonium ions) leaves exoese hydroxide Lone (OB ), and thus the solution 18 alkali. The hydroxide ions turn the litmus from red to
Potassium iodide ie, an elect- rolyte which fonizes in water (or solution) to form potmas2 am and iodide ions1-.
When a voltage is applied, each iodide ion (anlon) rele 8800 an electron to the anode and becomes discharged to an atom. Two atoms of iodine combine to form iodine molecu le which turns the staroh paper blue.
(1) During heating, the yellow
solid: (litharge) in the Pyrex tube: gradually turns: brown snag then melta. After heating a.. greyish metal appears, - This is metal lead, an
The lime-water turna milky
(iii) Yes, it is correct, It is due
to the fact, that the gas which: turns the lime-wataz, milky- must be COAT
The only gas which is introdu ced into the tube ie nitrogen,
and not sir, so that the
oxygen in the carbon dioxide
maet soome from litharge:--
Ca(0)+CO
報日僑業
WAH KIU - YAT PO
四期星
(iv) 3 possible reasons are:-
a) to prevent confusion in
identifying the
oxygen.
souros, in the carbon diox-
idoj ainos. Oxygen in pre- Bent in
con is used to a dry nitrogen is avoid the presence, of, uny·
water vapour which might also not "as oxygen" source," nitrogen: 10 chemically."
'inert" so that no undesirabi le side-reactions may occur
The percentage by weight of lead in the 11tharko must be measured. The atomic weighte
of lead and oxygen and molecu-- lar weight of litharge must : miao he town.
(6). 230,(8)+0 ̧(8) →→→ 2503(6)
(1) Prom the equation,
(1) 2 moles of sulphur dioxide are completely oxidized by 1 mole of oxygen, and airice
all the measurements are made at the same. temperature and pressure.
by Avogadro's law,
200cm of sulphur dioxide are completely oxidized by t
-100cm3 of oxygen.
(2) Singe 2 males of sulphur
dioxide: produce, 2. molee:of sulphur trioxide,
200cm3 of sulphur dioxide will produce 2000m2 of sulphur trioxidə.
(11) From the equation,
mole of sulphuric acid is madefrom 1 mole of 303
(or 22400 om, at 5.T.P.) and 1 mole of 50 is formed from
of So
200cm2 or 30g oan make: 22400 moles of sulphuri
200
0.0089 molen (to 2 aim
Figure)
equations at the trodes:-
(ii) The guaas at both K÷and I will
come out faster than before. (111) The 3 factors ares- dmorasse
"în condantration of the mag
copper (II) sulphate solution; increase in the current; and indresse in the area of the electrodes.
(1v) By Faraday's law of electroly-
1. Pársday of electricity (96500 Coulombs). deposites 1g equivalent of copper
(5356)
the quantity of electrioi-: ty required to deposite 0.0635g. of copper
95500 0.0635 coulombs.
63.5/2
193 coul.
ourrent x time quantity of electri- Outy:
the time required:
123 nec. = 193 sec.
(v) 1 Paraday of electricity
e 1 g. equivalent of hydrogen.
1g of hydrogen
(a mgle of hydrogen) G.H.V. litres of hydrogen (at 8.t.p.)
96500 Coul
*座11200 cm of hydrogen 193 Coulombs of electrici- ty liberate
193 x 11200
96500
22.4 cm2 of hydrogen
I is sostaldehydle (ethanal), CHACHO
and Y is acetic acid (ethanolc
sold)..
(11) In atage I, the chemical(e)
which will react with X is acidified sodium dichromate for aodium permanganate) Equation:
Ông cho phái ng
oxidising.
agent:
Type of raaation: redor
reaction
(111) In stage II, the chemical(a)
which will react with Y is
CH3COOH + CH3CH2OH
Aostio said shows the general properties of an sold. Active metals can displace hydrogen from dilute acetic acid. When a place of magnesium is added
colour1688 gas is
given off (whioh can be proved to be hydrogen when it burns with a blue flame and a "pop"
20H COOH+Mg
Mg+H2
經濟及公共事務科答案
堅道書院
Candidates who took the examination on this subject will remember that ** there were three Parts, in Paper I and that one, quaefion was to be chosen
·from each of Parta I, II And III.
The following are suggested EXILEW BEEN T
Part I - Question 1
What do the role of land in economía production?
What are the features of the land
problem in Hong Kong?!
注薙證美外會生使,的學都有生束小
份敢无帝运篇於份的
日六月六年四七九一腊公年三十六國民華中育教僑華
What major atepe has the Government of Hong Kong undertaken to deal with the land, problem?
Answer
Land is one of the four factors of production. It is not merely a piaca.
of ground providing space on which a building is erected or on which farm- Ang 18 carried out. In an economic sense, land meane the natural resour.... osa contained therein, including 908, Lake, river and all, the forcee of Nature like moisture, temperature and the richness or otherwise of the soil or earth. It provides Man with sites. for his dwellings and factories, with nines from which raw materials like. edal and iron can be extracted, aid. with river and sea abound in seafood. And last but not least, it provides. farmers with farms to grow their eropa or to herd their cattle..
The two major features of land pro- blem in Hong Kong are the shortage of level land available for: faotory" sites and the almost complete absence of raw materiale to be-mined.
The Government of Hong Kong has undertaken to deal with the land problem vigorously and effectively. I has carried out a prepondering series of reclamation projects as well as land development programmes which include the zoning of land Tor industrial uses, notably in the New Territories so that more. Tand can be made available for industrial expang- 10. Kwun Tong,. Foun Wan, and Evei Chung are glaring examples of the auccess of the Government's effort.
Part II
Qusation
What are the advantages and disadvan- tages of having public utilities owned and managed by Government? What are the arguments for having Hong Kong's water aupply provided by the Government rather than a private enterpriset. Discuss.
Answer
The whole question involvea two- main issues, Public Enterprise. against Private Enterprise and Government owned Monopoly againet Monopoly operated by Private Enterm
It must obvious, to
to everyone that public services like the supply of water, electricity, gas, telephone, bus or railway services, which are
· known as “public utilities should be operated with monopolistic rights. Otherwise, disorder and confusion will be the order of the day. Just imagine that we have several bus companies operating bus services in Kowloon There will then be all kinds of bus stops along Asthan Road and we will have a stoppage of traff- ic instead of occasional traffic con- gestions we have now. The same kind of argument, with variations against having other public utilities Lons may apply on a non-monopolistic bagis.
However, a monopoly does not neces sarily mean that it is
Government owned and managed.. It often does not
b
As a matter of fact, most of the Jublic utilities here in Hong Kong. are omed and operated by Frivate. enterprise.
Generally speaking, the advantages- of having public utilities owned and managed by Government are that it: Bliminates the profit motiva and that when a public utility is a large a acale project too costly for private enterprise to undertake, it can be carried out by the Government. The disadvantages are that the public utilities will he baresucratio and there will be few improvements,if any, in the services.
The matter of water supply, of ourse, is a little different. It is aise to have it provided by the
Government rather
than by
private
姿長把期筋的分
enterprise. Among other things, the. Joverrmont has the advantage of find− ing suitable land for building reser— volrs. And what is more, when thera is a shortage of water even with the
the existing mumber of reservoirs, Government can negotiate with the Kwongtung Government to let water.
Aprivato, flow down from Kwongtung. enterprise will have great difficulty carrying out such negotiations. As it in, there in a atanding agreement. between the Water Authority here and the Kwongting Government to this effect and rather large quantity water wa uge here is supplied by Erongtin.
Part III - Question
How is law made in Hong Kong? What part does the publio play in law-making process in Hong Kong?. Illustrate with examples,
Answer
The Lawa'of Hong Kong are passed by:
A law act the Legislative Council. ually begins as a "bill", which is a
The bill has to list of proposals.
go through three stages at the meet-
luge of the Legislative Council.
Imowd as wreadingaw, bed
before it
Oomen s law,
海
At the first "reading, one of the members of the Council will "move" that the
bill be read for the first 'time: 'A 'copy of the bill is thern
who is ex- presented to each member, pected to acquaint himself with the proposala. The Governor, as presid- ent of the Council may address the members about the bill if he so desires, but the bill is not debsted at the first reading. At the end of this reading, the bill 18 publighed in the Government Gazette, and
a date for the second reading is fixed.
At the second reading, the bill is discussed in general. Its merits and
: The aecond demerits are debated. reading is considered as a' crucial: stage in the enactment of a law, as ita acceptance of rejection: depends on how well the law, sa its accept- ance of rejection depends on how well the11 and can benefit the commun ity. When the bill is accepted through a majority of votes, the bill
which means that it io, then
to any one of the............ standing committees or a select com- nittes depending on the nature of the bill for a careful examination. Any nember may propose an amendment to thebi11. ·The Clerk of the Courtail. normally receives the amendments and they are subsequently printed and distributed among the members, who `ara:allowed to debate on tl amende
menta.
The final stage in the law-making then takes place when the "bill 18' moved by the member in charge of it to be read for a third time, When the final adoption of the bill is passed, the bill is sent to the Governor for his assent. After thia, it' is published in the Government Gazette and becomes a law, or an ordinance.
It is identified by its name, the year in which it was endet- ad und the order in that year in. which it was enacted, a.de,
The Protection of Women and Juveniles Ordinance No. 1pf1951
The mublic as a matter of fact, plays an important role in the law- making
When, a
woline proceed Li Hong Kong.
is published in the Government Gazette after the first reading, the newspapers will give it wide ge and the public's reaction ar -will be given expression by way of
open letters or comments or editori- als in the newspapers. The public: may also send lettera, to the unoffic
·Lal members of the Comcil to either. support or criticize the "bill", this allowing the legislators to low what the public wants or does not want.. Many "billa" were shelved in the past because of the public's objection.
教
育
認識香港 討論會
將出洋深造之大學生數十名參加
度题、
均强
顯調港
示前府
對途新
頭香樂聞
緊港觀處
極
世理
界助
各理:
地處
工
商務
界:
分會數十名將接受本年暑期预奉生交换 健,安溏的政治前途必爆樂觀的
看來
把香港的最新發展面貌,这揚他邦。 期数數千名学生代表於異邦接受工作時,能途的樂觀及信心。... 協會會躪室內,采行「認識香港」的討論會,以資發晚及英國政府的態度,亦爾示他們對香进的 的很大反中大學生小昨假康樂大廈頂樓香港旅落同時,就世界各地工商界對香港近年來的发 特莸心際恐務業及商議學生會屬下香港 始爲之。以目前的政治發器形勢及中共的態度而 -香港貿易發展局及香港旅遊協會特別放映了
香港電台
注官「東西南北
《唐語長幸 洪恩!」
一湃唱,卅分、天氣 , 音樂: 十五分 六時,新聞及天
游
十九飛馬八
賽馬節目,地分點
時廿五分
天
十一年,新聞:天 分;45
徵 鐵粵的分:
·商業二台
七時,新蜡,良機+州分-新聞及
五天街
威力
分牛、滿
旅了
一步∧卅天
態問
天,時母聲帶豬二 中一 + 一八卅時 閉時天降 公交時分分一時。
不然,新價時
卅小阳康分,報新分分,新天情邸
太:每活嗜新天新☨新
|江之養「十五分,天】小說,十分, 決時五十五分
·以香港目前的地理及政治環境而言,最令國 外貿易可說正與時俱 長穆士:香港貿易發展局及香港旅遊協會等代,遊業狀况的電影予我會學生代表。
·際人士解祐者,莫過於香港前途的問題。 主譯討論會者有香港政府新斯威署助理克:幾部由然兩局拍有關介紹本港目前的貿易及旅曲,+五分。「空中 . 在香港貿易丑冊局的在努力下 1. 散的對
旅游協會同缐地亦爲香港的外匯吸引而努力
·
天韻
九
̇ ̇
答表示,就英國前首相希斯最近訪問中共佔,酒樓及各旅游中心商場,服務的改善及質录: 時代歌聲,卅分,漁民一杯,卅分- 時代曲
谷排
分
NLU - Amat
五時、帱
等到所瞵ľ租偕新界條約於一九九八年期機方面的發撈 ( 坤 )
·a. 因此,如果中共政府要改變香港的話,也不必 香港直生信心及好感,以期促進貿易及旅遊業各業。 位,但目前中共似乎並没有改變容袖地位的意向,的現况有所部織,給予他們美好的印象,從而對儒進行曲,四十五分,小婚面目,時代曲,
的態度表示,香港的前途是樂的,而且中共政 的提高,正吸引更多的各地遊客到 府不承闵有關租借界的濶政府與英國政府的錄....最後,三位應邀主講的代表均切希望,本 政府新聞處署理助理處長穆士誠對此間疑的,死忠宣傳及呼籲各項本港旅遊行築,包括旅店一成發位,係唯一日,五十五分,帝
約。換言之,中共的態度可以隨時改變香港的地 海的學生代表在外國時帕攝量給予外國人對香路|十五分,音樂小曲,十一面菜的料會、
本港留美學生
暑
期工作難求
措暑生政
認爲措施不合理
能今
作在全
國特點
學殊
見幣 中仙瓜莲量
生活
有的是
專形期
務下
協始作
星影是工的 一體响生力: 业常的在量
極此 爲的的者,使
獵有,的因在大敬而
中山紀念中學
不,是美工,你這個 全按典地解外告工令希美类一 藏花在或國中作年期學生 利部糙失,圜没外國的外
又股就工生生的
關希作故
實三是有下
自情壓今上是實經得
上天不適下,
能據上调
需指很那得是於位任的需
要出多三到上沿革職工
- 及正•篇交蟹者
喜留美升暴的早生所關件的學生,不會很多。(文·蔡蚱日後的强大酒店, 整的問題,至捻本持希,但只能修適合那三你做文化教育及社會賢達 首先大學指出 崇州國父孫中山·港九新界文化的人 [致力於文化教育事業發,出席者有根得曼斯 外各界熱心文化著育人温迭機剧传事
|美北方大學校長
·校同意遠東書院畢業生傳
品外主受臺辦 推架
夫娜,蛭該校副財務長於明日上午搭寨航轉往 | 時 日下午,吃搭馬航八一 北歐、巴黎、瑞士、做 恇用三日正式上畤斯 迭代爾未婚一行,於昨 泰國及新德里、中東、 名建,聊起招收中, 【AMUEL L. MEYER)在著大及中大參現,將獄神事錄攥著脸:傳道 俄州北方大學校長緱槍 亞洲區大學關係,並 外名書畫家贈送名實作 香港商科語言書院
ㄟ特美國俄亥進東西文化交茵反加强指護出,並激維高門
嘉湖博士借向該校教授
增設中英文中學部
「嘛,並中山縣山貴海歡,備如藥 該批育及藥
領育生,从·大,化全部交 ♯員秘期中弄槐王藥單形會劍,徒,貴樹,懸次主,
品,瘓觀,魢豬校平,或陳田區, 冠笑有潘柱,常蘇山宗伍
有東毛,組中断空一鄉 德保智李希望
亚校融院俄遠
一聆梅,州踹作,後
學文學
,全教學午中衞協商號黑
但部爾經班英感助
“由
新孔打
●包辦
生機
赴快土山前交源育北換委茶團斷加碼、舞:玉,銘黃棋石,漢元王 蘇會早餐有痰
旋生
及五豁天津分十鸭,
分五智五 倪魔四彭三、市、
·食樂透新目𨸢入分新溫
原四踪 五舐小爐爆學掞關。 問顰五及察岳聞,故閑分
。
日安衤R集 商
十事,九代八,老響六開五务一,二月
· 五時市目寺約交二分交一卅時:八、
̇翻價時價時女分,民
時位,雜新天新
新代,新店證將氣障
天仰曲 保聞
股
潘晓沨
的
蜀验天夜盘 八卅、
本通釋時,
分下車
谢信
五
天民公分天
十九天樂八,假士林
电话:
雅辦新曲新隨新 天心新,陳集聞聞聞
起难。
本分
人股 天
分性:萬一颗及晚一根天
一味、天十五形
1) 五峰險
卅片五卅一
中
分時天五米地天
全向善五,妹報開
八爺與书中七親探報六祖五
五一告,五
四卅分
·茶蟹、
分分新十
名時代曲,北分 竹
商業台
分開
天曲 天白絲天
內翥雅趣,時代曲。
分:漁民天集:音樂。 一時,時代,
一時代曲,非分,天氣,五分
五天
卅分,天棄。
曲目
明巷
「把錄片特ㄩ」。
十二時批五分、[
片集-五十五
四時,「芝麻 八時,威與教育。
|明珠英文台
分時
甘心檗 曲
代曲:
-四十五分「良友 [
四時,開·麗的中文台
港九時事,卅
关酵
五五解
五
姐精導
界七十天龍 九開八一兗定,七架片
密片時。卅主驚 八、四蔽片,九,優阳、甘、
五,七,陳實紅五分
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