FERENCE LIBRARY
27 JAN 1979
育教僑華買三第張八第日九廿月二十年午戊夏 WAHAY YAT PO
1979
ion.
f.
中學會考試題預習專欄
經濟
(十六)
明德出版社孔覊璇盧榮俊古嘉利提供資料
Economics (16)
Population
111. Effects of rapid grow
of population the
society of Hong Kong
Hong Kong's rapid growth of population since the Second World War has resulted in the folleving social pre-
bles:-
a. Land and housing: Dense.
donation in urban area has
made rent creeping and the supply of houses insufficient. Therefore overcrowdedness, unhealthy squatters and nancy disputes arise, b. Health and envirement: Due to overconcentration population in urban areas, space for public amenities. and medical facilities have leng been felt insufficient Morcover, industrial growth has made many residential Industrial buildings mixed together. All these result in pollution and traffic con gestion.
As
and
Social welfare: sult of increasing population the need for social welfare
services arises, Social pr blems such as crime, drug addiction, family problems, and juvenile delinquency
thus created.
IV
Reasons for the populat-
ion centrel in Hong Kong
Population centrel
is significantly important in Heng Keng for the follow ing reasons:
On the negative side of
population growth, it can be an impediment te economic
It poses a heavy
progress.-
burden on the community in the
sense that
provision ei
adequate pap
syment for
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growing labour force can be difficult, and that resources
for economic development may be diverted to meet the, in- mediate demands of an increas- ing number of people for basic goods and services, such as foodstuffs, housing, educat ion, medical care, trans- portation, etc,
b. As population grows re- pidly, per capita income. my be reduced; This means that. the income earned by each dividual falls since the Gress National Product will be shared by a greater papu-
lation size.
Unlike mest Asian coun- tries, Hong Kong is charact- erized by an extreme shortage of natural resources. P pal
atiem central is necessa reduce the growth rate demand for foodstuffs and
other necessities..
郭日僑
Population control in Heng Keng can ease the burd-
en on
government in pre- economic, social, and
administrative services te the community, thus releasing public funds fer the improve- ment of the economy and assi-
stance to industry.
化
(+)
·明德出版社朱安林提供資料 Chemistry (16)
Solution to 0.22
A is copper(II) carhonate Bi copper(II) chloride
solution;
Cis
carbon dioxide;
D is copper(II)oxide;
copper powder.
(ii) (1) CuC
+21C1 C&C]2+H2U+CU2
CucCz
2C004C
Molecular mass of CO2=!4
Mass of C in 1,48 g of Z
mass of C in (0,, obtain ed in combustion.
12 x
2.64
0.72 g
日七廿月一年九七九一圈公年八十六國民華中
六期星
Hence, the molecular for ula of Z is C ̧ñ¿0,
(iv) The compounds are:
(1) CH2CH,COCH
propanoic aci
(2) CH-COOCH,
methyl ethaneate
(5) HCOOCH,CH,
ethyl methanoute
Solution to 0.24
8
X is ethanol, CHCH20
ethanoic acid, CIL CUOR
18 ethyl ethanoate, CH3COOCHCH
(11) (1) CH ̧CH2OH + 2(c)
CH COOH
ethanoic acid
(2) CH,CH2O!! + PC1
CF_CIL2€1+POC1+ICI
chloroethane
(3) CIL COOH + PC15
ethanov] chloride
(4) CH2COCH + CH2CH¿¢f
CH CONCU, CH2 + Ilg
Molecular mass of H10×36 (iii) 4 colourless gas is
Mass of C in 1.48 g of Z
mass of II in water obtained on combustion
1:08 18
0.12 g
mass of 0 in 1.48 g of 2 = (1,48
0.120g 0.72
In the past few years, Hong Kong has experienced a rapid process of industri.
lization and becomes an
But export-oriented place. inevitably Hong Kong has lost
in her comparative advantage labour-intensive products
because of rising wages at
home. The only beneficial:
way to maintain her exporta'
competitiveness in overseas
markets is to improve the labour skills and industrial technology, To achieve this a good human capital mast be improved. Thus it is necess- ary to have adequate training programmes for the young generation, while at the same (ii) Molar mass of 7 time population control
essential.
e. In recent years, Hong Kong has experienced serious inflation which adds diffi-
culty to her export sector.
To curb inflation, one of the
effective way is to control
the rate of increase of
demand for foodstuffs and
necessities by keeping down
the growth rate of populat-
PK 319151–3
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0.64 g
Kolar ration of CI
0.12 0.64
06 0.12 0.04
3:6:2
Hence, the empi ical for mula of 7 is CU
0,296 x
24000
96
Bence,
relative molecular mass of Zis 74.
(iii) Let the molecular formula
of 2 be (C.
Then
relativo molecular
mass of ZEDE
n_x (12x3+126+16x2 7kn
74 (as calculated in (ti)).
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evolved which is hydrogen
He 2CII_COON + Mg
(CH_C00),NF
(iv) (1) Gas G is ethene.
(2) CF,CH,OH
+ H2O (3) The bromine solution
would turn from orange-red to colour- legs.
Carbon dioxide at first. reacts with limewater fo form the insolühle calci- un carbonate which appears as white precipitate However, excess carbon
dioxide will react with caltium carbonate to give calcium hydrogencarbonate. which is soluble in water thus giving a clear sol ution again.
·CO2+Ca(OH)2−>Ca€©z+līg0
C©g÷Ca©© z+Hg 0 —≈Ca(HC0z) 2
(ii) Carbon dioxide basically
does not
FER9kt burning,
condle flanie.
shes the
However,
burning magnesium produces
so large an amount of
energy that carbon dioxidel
dezom¬osed inte carben
end oxygen and the oxygen thus liberated ran support the burning of marneSINU,
PMA
·21g0
Solution to 0.
8
(1) Both the forward and
the backward reaction will increase in rate (2) The equi)ibrium
position will remain unchanged because the number of moles of · reactants and that of products are the same
(if) This indicates that the
(b)
forward the
endothermic.
19
It is because these paints consist of leäd (11) ions and a fairly low accumulation of this ion in human bodies will be fatal.
In the presence of water and atmospheric oxygen copper is converted to copper(II)hydroxide slow- ly which then reacts with carbon dioxide in air to
hydrated copper(11) carhonate which is bluish green in colour.
̈4€u+2H20+0,
→4¢u(08),
Cu{0}}2+CU2+n}!q{
ity.
Caco ̧ * (n+1)II,0
Hydronium ions, H2O responsible for the acid-
When sulphur tri-. oxide dissolvea in water, it ionizea to give hydro- nium ions, thus being able to inru blue litmus red.
80z (g) +0,0(1) —P30*(aq)
SO, (aq)
(iv) Copper, being less elect-
ropositive than zine, cannot reduce zinc ions to Zine; however, it can reduce silver ions to silver because it is more
Lectropositive than
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silver.
Ch 24g (aq)
(an)
ig
Silver metal appears
silvery needles,
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