1974-02-07 — Page 17

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CITY HALL報日僑華

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くく

1874 中學會考試題預習專欄

盛道書院主權

經濟與公共事務科(十三) 徐有祿

B.P.A. (13).

Multiple-choice questions.

1) The main difficulty of barter

ayetem is that it

A hampera business transaction.

3. provides no means to store for

old age.

c. lacks the means of

D. fails to determine the rate of.

exchange

requires a double coincidence of want a

2) Which of the following statement.

is true?

A. A chèque is accepted aṣ money:

because it is issued by a bank.

B. Bank notes issued by any bank may

function as money.

jC. Legal tender is accepted as money.

through: Legielation.

D. The one-dollar cine are issued by

Hong Kong and Shanghai Banking Corporation.

E. Only A and B are correct state.

menta

3) The use of cheques providea

The general public the advantage.

of overdrawing whatever amount they like.

2. the users the safety against

forgery. and robbery.c

3. the budineashon the convenience'

́of making large payments.

4. the drawer the means to tide ove

financial difficulty.

5. a bank the facility to create

̈ ́obeque money.

A. Only 3,4,5 are true: B. Only 2,3,5 are true C-0nly: 1j23.4, are true

D. Only-2.3.4"

E. All are true.

are ture

4) Both bank, credit and trade credit

are important to the prosperity:

of a place with one exception.

Which is the exception?

Beck credit reduces púronasang

power of the community.

3. Bank credit enables wholesalers.

to allow trade credit to retailer C. Firms can do more business with

credit.

D. Both bank cradit and trade credit

s can stimulate indsutry and

commerce.

E. Excessive credit lends to inflat

'ión....

5) Existing farm land in the New

·Territories is subjected to pressure from

A, the expansion of urban area

B. the establishing of new town's C.the building of roade

D. the construction of public amenit-

LOB.

E All the above &,B,C and D

6) Identify the False atatement

about the vegetable Marketing Organization.

A. It is financed by 10% commission

* on the sales of vegetables,

B. It collects and transports

vegetables from the New Territor- ies to the sholesale markata

c. It aupervisen the wholesales of

Iocally. grown vegetables;;/

D. Imported vegetables are subjected to its supervision in wholesaling E. It is a statutory body,

7) Fresh Fish ponds are chiefly

B. Yuen Long C. Tsuen Wa D." Aberdeen E. Lantau Island

8) Tertiary production is the A. work of distribution and the

provision of perschal services B. manufacturingof luxurious lo

commodities.

C. production of light industry

producta.

D. making of goods, fór Improving

living etaidurd:

E. Only Band D.are town

9) Which of the following is a

secondary product?

A. A. fish ;- B. Iron orea

C. Plastic flowers:

D. The service of an accountant

B. The work of a carpenter

10) Hong Kong tackles the problem

of land shortage by, kt

1. reclaiming land from tha:mer,

2. building satellite citiše

using lend "economically. using hillaides for building purposen.

5. diverting city dwellers to rural

6. improving traffic conditions.

A. Only 1,2,3,4 are trus

B. Only 1,2,4,5 are true. C. Only 1,2,4,5,6 are true. D. Only 1,2,3,4,5 are true E. All are trua

1)The most developed satellite town

in the New Territorism in

A. Teipo. B. Shatin. 6. Kint Chung

D. Cantle. Pask E. Tas Wani

12)Higher productivity can be achie-

ved through

A. sound health and favourable.

B. higher wages and accial status

C. better working conditions and

management

1D, good, education and training

E. All are true.

13)In the labowmarket, pride in-

known as

bonus B. mages.

D. price

B. charge

salary

14)The organization of workers the form of trade unions is chiefly for

A; improvingthe well-being of the

workers"

B promoting organized activities

among workmen

uniting the workers to fight

better working conditions and

wagch.

D. developing mutual asefi

anongthe workers

E. All are true

四期星

1874中學會考試預習專橚

竪道書院主精

物理科

穿爐榮

solutione

PHYSICS (13)

Single touchr

The steel needle is placed: on a table and is stroked. repeatedly in ons direction with a permanent magnet. The pole of the magnet must be rained clear of the needle ́each time. Its end is reached:

The end last touched has an opposite polarity to the stroking. poled.

Divided touchi

Two magnets are used, one for each half of the needle. The procedure for each half is the same as the method of @ingle touch. The end of the needle last touched is again opposite in polarity to the magnetising pole, so that the magnetizing poles of the two mugnista must be of opper caite polarity to make the. needle a hornal magnet.

日七月二年四七九一曆公年三十六國民華中

·Electrical method?

The neudle is placed inside the solenoid of a large nud- ber of turns of insulating copper wire and connected to 2 battery. The current la switched on and off.

b) Before the steel bar fe magnet- ised, the axes of the mugnetic domaing point in all directiona at random, so that: the steel bar as a whole shows no polarity. After the bar is magnetized the magnetic axes of the domaine are aligned in one direction. e) The iron filinge in a test tube will he attracted by either end of a compass needle, but after it has been magnetiaed, it will be found that each end will". attraut one end of a magnet and repel the otheri

24.

ay Faraday'a laws of electrolysiar (1) The mass of a substance Lib-

erated at an electrode is proportional to the quantity of electricity which has passed through the electro-

(11) The masses of different.

substances liberated at electrodes by the same gunta dty of: electricity are in the' same ratio of their chemical equivalenta.

•voltmeter:

-Bray tray

Silver

•Silver Solt.

Solution

Theoilet

o) (1) The current through the

circuit should be adjusted todenell enough value to avoid heavy deposite of silver onto the brass which might drop off,

(ii) The brass tray should be

uniformly surrounded by the silver electrode in order to give an even deposite of silver on it.

The mass of silver deposited -0.001118 x 4 x 10 x 3600

161 ga

(ii) The resistance of the ecluttor

7.5 ohms:

(111) The cost required

-30 24. 1000

Problems for next week 25.

a) State ohm'e law.. (b) Explain the term 'lost volt'

\0)A 6-volt lamp has to be run off a 12-volt battery having an internal zead stance of 0.5 ohm"

Calculate the resistance that has to be added to the circuit, if the lamp has a resistance of

17 2ohms.

d) two lamps connected in series

have a regiatance of 500 ohms. Wher. Joined in parallel they have a resistance of 96 chìs, Find their seperate resistances. 26% Show how would you convert a

2) voltmeter of reaistance 50 ohma and having a full scale reading of 0.5 volt, into a milliammet- er with a range 0-500 m.

b) An unknown resistance is placed

in series with a battery of negligible resistance and a gelvanometim of resistance 200 ohas. The galvanometer rending is noted, The unknown resistance is replaced by a rýsistance of

10000 ohms and it is found that when resistance of 1.8 chime i is placed in parallel with the galvanometer the deflection is reduced by one tenth. Find the unknown resistance,

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