1971-03-03 — Page 14

真二第張四第:

第日七月二年多辛醫夏 WAH KIU YAT PO

院書法新譽稱

罗僑

1971 英文中學會考試題預習專欄

新光出版社主編 SUNLIGHT

PRESS

化學科

(十九)

CHEMISTRY

LESSON NINETEEN 3-3

ANSWERS TO EXERCISE 17

(171) 8

(170) TJ

(172) D (173)

177) R

(175)

(178)

(179)

(180)

的任務。 爲就會造就健康、和论、明、勇於任勘的公民

本人親亦想酸一啖貴校在教

折及成人教育有很大困獻,實校廉,說是不凡的。在愆個教會中術然增加了廿多個傑 下的日校和夜校玥有男女學生共一至,以黑豳頓增之需求。此外其獻要之點是在 何故多房家應馬地,可供更多經營活動之用 設有分校,二十年來對本港中第一的梭名。但以私人方面而言,其邀段之後就亦可 育方面的就读了。貴校在捆九淘彩新,最鸱低。因爲本港還有不少更大更精緻 一因河校舍之設計常用而投與空位的配合-和力求

··本投今日正式啓用,河所校舍在本消並不算

献貢育敎港對

全女大有萬的成

有

力

的輕食方七日人

分离本

齊不惜不

男女學生,不嘗從露本上得到及雅育的劇塔等。另有一個二十五祧圾的游泳 宏大肉款,同時使數以千計的一切合於賞用,例如此調之實證家,良好的資質館

EXERCISE 18

(181) One of the following

not correct, it is:

Oxides are basic

properties of metals is

B. Usually form stable hydrides with hyc

Displace: hydrogen. from dilute acids

reducing agents..

chlorides are el

(182) One of the following chemical propert

is not correct, it iss

B."

D.

:Oxiddzing agents.

Oxides are usually acidic

Do not react with dilute acids

Do not usually combine with hydrogen

of non-metal

F. Chlorides are volatiley non-electrolytes and

hydrolysed by water, 1.8., covalent,

(183) The chief ore for Potassiumvis:

報日僑茶

茶位,二秘在位及此

百年一際獎,跟

三期星日三月三年一七九一屦公年十六國民中育教儒華

本港中學補助教育計劃

十六年見成效

舍的開科:成爲新法屬下各校與前輕護的 强不息,我們更靈異的工作是要續努力

·探索新的敎育範圍與力歌;伊爾今日隰锏校 「我們所面臨的是未來的插。本校經已大了, 一開,我們同以往,多慰,但此時此際 新法院正怏向未來的旅程,在本校廿週年總

最後,本人再有保做出下表示亦心的

之育法

院

三中供

英揭港 四亦中橥督 百有中政昨 萬補一府

三幕

逾中 並

一四將致

億及提詞

趾大

一流,致育界人任等, 於昨日下午三時舉行,跳消督威麟趾碓士主持。精神。掀本人所知這些设鋡活黼有愛丁阿公愉悅之用。但看東校高速 【開心新法貫院文福氣新校舍開幕典: 對戒會的責任及蔼爲社會服務的一們極好娛樂及基本訓練 中五亦有補助學位三萬八千個 惟每年經費將逾一億

策文 個位福

十預道

摺小,象尤

C

月餅式,

儀式在骸七 昨由艾公决古佛成二十週年桕念。港杳 年展览等,對於各類展出及火演,均予以揚。茶

新法新校舍開幕

重大的發展,我們在六十年代裏龍的主目標

位。這個目標現已達到了,同時我們已採取試

「奔小型激育】:

組織,其工作包括有就業輔邁計劃為,此研 花大就業祧謀組乃是大學選貼會之一個豬網 ;大商將由各位在本裱商染上有地位之人拙作,

更新之教育範圍與方法 ▲,似爲镅欲業的道皆可得小學補助表示更須自强不息、隨時探險,本八希望这是象微:工商業與大學間之關係。。)

縮的步驟,於不久之來在一般公立小學推行至

私题概準的 色欲將收方

預秘府 設供念元,

去 新

中伏,九六基三。百烈百提璃器 到大的的有,能學的。英七為不的換分 個分佻降职

侵密校旗校、約育 供 中年 千再 助话十 們十助的小 手蛾 爲的。道學時個兵導器的

外位 學月即爲孕时天、秋冰翻足的 四個 数目

八中的皇

《酹鼠、新法做陷 交福道 新校舍於昨日舉行 | 式。(左)新法杳院新校舍開心軟碴,校長王梁蜂我負致詞。 :(右香港督戴麟桀爵士爲新法掛院文福道新校被關榚主持其石握基

··本人深信本校過去之拓展,不祇附於生人

•CREEN)

險數立大輩,謝造

《雅》

李受各川顺育談得如游泳池,籃球還及縈身 海中較大的体店。它擁有二十四開孤统,上午班一

五)下午三時,優大學化學钴彤說舉行一個專題, 。本人深信各位擔會磁场利用這裏的机楸識僳,已成的森 各位對學能够在這愉快的境中攻忡,實榔成了雙我們 [下午均成容納近一千係望生。各位亦可瀬及承包工程者, 各向翠的所希 越心,美股行

一憚能够满足了九糠方面 一堂,有人說:誰是像,專皙演術,歡迎各界蒞聽 造。君她筑物的人士滅」「個工作之開業」。 立於里射合前,待 太空時代的一對火

高校倍前端越斯對 物時,對她向所有討 會,我时會之主題為「商大學——— 八楼团) 港大學就業黼導祖五日(星期 界人士到惑 GF

·主題爲「商業與大學」 歡迎各

大 舉行專題研討會

與時代:

新微探预感你對,波助築今案計,榮蹴

左右

之證有本機,

墨敦安吉担任

A. Rock salt

B

Chile sal

C.: Dolomite

(184) The following, except one,

Find out the exception.

A. Marble

B. Gypsum'

Anhydrite

Cryolife) Carnallite

chief ores for calcium.

D. Dolomi F.

Haematite

The following, except one, are chief ores for Iion. Find out the exception.

Haematite

Magnetite

Iron pyrites

Spathie. Ironore: Calcamine

1971 英文中學會考試題預習專欄

新光出版社主編 SUNLIGHT·PRE

物理科

(PL)

的

The figure PQ RS HK represents a metal plate with

uniform thickness weighing 200 g. A mass M is suspended from one end. Balance is obtained when

it is supported at A, when M is immersed in 'a liquid of S.G. 1.2 balance is restored if the point of / support is at B. Find (1) C-CC of plate (ii) Mass nu (iii) density of M

10.cm3

农业

PHYSICS

LESSON NINETEEN

ANSWERS TO REVISION TEST 1 (M.C. Section),

1em;

(186) Which one of the following is the chief ore

mercury?

P. Bauxite

Q.

anhydrite

Cinnabar Galena

27. R. since E E/I

CECTION: B HEAT

R+Y

R

R.

cassiterite

28.

(187) Which of the following are chief ones for. magnesium?

p = R1/a p=R

when 1/1 is: (0 x represents -R - Y where 1.1cm.i

2 sq. cm. p-resistance of 1 c.c of the vire

(a) What do you mean by the coefficient of apparent expansion of a liquid and describe how this may

(b)

be determined by using a S.G. bottle. Explain the meaning of absolute zero..

P. Cinnabar an

Cand Gypsum

29.

(c)

Shay the equation PY

where F, Y. and Tare

-Q. Calamine and Galena

R.

Bauxite and Cryolite

S

Carnallite and Dolomite

T. Magnesite and Anhydrite

(d)

(188) Brass is an alloy. Tt consists copper with

20%-35% zinc.

Q. 35% - 40% zine

R40%-50% zinc

s.

50%-60% zinc

T. 60% or more zina

(189) Duralumin is an alloy with

aluminium which is about

60%

Q

70%

R, 80%

32.

sium and copper, and

(190) Steel is an alloy with iron and carbon which is

about

P.

to 1.5%

to 14%

to 10%

S. 10% to 15%

Ta none of the above

v1) Complete the following table ror the Comparison of

the halogens a

Appearance

Boiling-point

CHLORTNE BROMINE IODINE

:Melting-point

Specific gravity

Water

Bleaching action

Hydrogen

An oxidizing agents

Metals and norn

metals

Dilute alkalis

Concentrated

alkalis

(K) Displacement

reactions

Note; The space will not be sufficient for you to fill,

please use a PIECE OF PAPER.

34-

w since 8 gm of oxygen is the equivalent

weight in gm, I faraday is, the quantity: of electricity to deposit or liberate I equivalent weight of the elements in gm:

s, 10 Kilo-watt = 100.00 watts:

10 Kilo-wast-hr = 100,00 joules/sec

x 3600 sec. 3,600,000 joules.

equivalent resistance the parallel

·resistance S. =

total resistance of the circuit 8 1/5.5

= 6 x 41 = 11 amy

IRV=

voltage on the 2r as read from the voltmeter =(30/41)(2)=60/41 volts.

The current in the 3r resistance

30/41(2/5)amp..

Heat produced per sec

30

( 1 ) 2 ( ) 23

Since H

per

36. R.

amp.

REVISION TEST L, CONVENTIONAL SECTION:

GENERAL PHYSICS.

SECTION A

(a) State Newton's Laws of Motion,

Define the terms: coefficient of friction, angle of) friction and show the relation between them.

(c) A uniformly rough plane inclined at 30° to the

horizontal, when a block of 100 gm is placed on the topy at slides down with in form acceleration of cm/sec, What is the coefficient between the plane aid

the block, Find also the force necessary (parallel to the plane) to keep the body moving up. with the same acceleration?. (g • 980 cm/sec2).

(Hith the aid of diagrams explain: what do you

stable, unstable and neutral equilibrium. State the conditions for equilibrium when acted by

a body will be in ral coplanar forces..

the pressure, volume and temperature of a fixed. mass of gas.

In a simple barometer tube, the length of mercury: column is 74 cm. When the tube is depressed so that the volume of the space above mercury is halved, the length of the meraury column is only 72 cm. Find the atmospheric pressure.

"SEOTION C. LIGHT ANDSOUND:

(a)

Define refractive Index of a substance and critical. angle of a substance and dcduce a relation between them.

Beams of rays and moving from glass to a liquid, by construction fand the angles of refraction when the angles of incidence are 300 and 60 respectively. (refractive index of glass-

refractive index of liquid=

啦

(c) A compound microscope consists of an objective of

focal length 1.5 cm and an eyepiece of 8.com placed 20 cm apart. The abject is placed so that them final image appears 30 cm from the: eyepiece. Find the position of the object and the magnification.

ELECTRICITY AND MAGNETISM

SECTION D

(b)

(a). Draw a Wheatstone Bridge circuit and explain how

the relation of resistances is obtained.

Describe. how you would measure the resistance of resistor using a metre-bridge. What necessary prev. cautions. must be taken to get an accurate:result.. An immersion heater rated at 3 kilowatts is used to. heat a copper tank weighing, 20 kilogram and con taining 100 litres of water. How long will it take to raise the temperature of water from 10°C to 50°C! if 25% of energy supplied is wasted in beat losse (S.H. of copper - 0.1, J « 4.2 joules/cal.)

Define the following terms

(1) transverse waves, (ii) wavelength, '(did) frequency and (iv) amplitude.

If the frequency a tuning fork is 550 c.p.s. where will the first and second resonance positions, be Iocated in a älased resonance tube whose end correction is 3:5 cm. (the velocity of sound 330 m/sec.)

A stretched string emits a note of fundamental frequency n when plucked. Its tension is increased by 125%, how should the length be adjusted so that the string emite its second overtone.