1970-11-04 — Page 22

莫二集張尺第二日六初月十年戌庚瑟夏 WAH KIU YAT PO

郭日僑

三期星日四月一十年〇七九一曆公年九十五國民華中,育教僑華

1971 英文中學會考試題預習專欄

DRAUMALTÍM SUNLIGHT PRESS

物理科

PHYSICS

LESSON TWO

EXERCISE 1

Some of the following are preca

a beam balance

of using

The object to be weighed should always be placed in right-hand pan.

Before raising the beam, the small rider on the beam should be pushed to left end of the beam.p

When extra weights are added, the beam should be lowered first

Forceps should be used for handling weights. Hor objects should be cooled first before

Which of the following alternatives is

3, 4 and 5 only

23 and 4 only

E.

1, 3, 4 and All of thém

only

4 and 5 only

Archimedes' Principle Impl

body floats on a liquid,

the upthrust equals to the product of the volume of the body and the density of the Liquid.

the force required to immerse totally the floating body is

proportional to the fraction of the volume above the liquid surface. the weight of the body is the same as the weight of liquid it displaces

the depth of submergence is proportional to the ratio in densities between liquid and body.

the apparent loss is zero.

zero.

ich of the following alternatives is correct?

2,4 and 5 only

1, 3 and 5 only

4 and only

3 and 4 only

2 and 3 only

(3) Which of the following statements are not equivalent to Archimedes Principle?

The apparent loss, of a body when immer in a fluid is equal to the upthrust exerted by the fluid,

The volume of the fluid displaced when a body is immersed in the fluid is equal the volume of the body.

The upthrust is equal to the volume of fluid displaced.

The weight of a floating body is equal to

the upthrust.

The upthrust is equal to the weight of

fluid displaced.

2 and 3 only

B. 1, 2 and 3 only.

C. 2, 3 and 4 only

and 5 only

and 5 only

solid B of S.G. 1.5 is attached to another solid X. so that this combination just floats. liquid of S.G. 1.2. The solid X must have

A. a smaller mass than B

Bits density heavier than B.

a smaller volume than B.

its density lighter than B.

E. a larger mass than B.

(5) Boyle's Law gives the relation between pressure

and volume and includes the following factor

for a given mass of gas

for the same kind of gas

3. at constant temperature

for all kinds of gases

for all kinds of fluids. for all ki

Which of the following alternatives is correct?

A 3 and 4 only

D.. 1, 2 and 3 only

B. 1, 3 and 4 only E. 3 and 5 only

C. 1 and 4 only

(6) 3 coplanar forces are in equilibrium, they have

some of the following prope Les

they can be represented by parallelogram of forces

they can be represen by triangle of, forces.

they are concurrent

their resultant is zero"

the sum of moments of these forces about.

any point is zero

2 and 4 only

2, 4 and 5 only

3, 4 and 5 only

3, 4 and 5 only

2 and 3 only

(7) The force to lift up a body with uniform velocity

from ground is the same

the weight of the body

2. the attractional force between earth and

the body

the force required to push the body steadily along a smooth horizontal surfacer

the product of mass and acceleration due

to gravity.

the product of mass and

City

2, 3 and 4 only S. 1 and 4 only

2 and 5 only

2 and 4 only

only

A frictional force between a stationary solid and the horizontal plane on which it rests

increases as a norizontal applied force increases provided that the body remain at rest

is independent of the weight of the body when the body remains at rest is sometimes zero

is in a direction parallel and opposite to any force applied to the body

divided by the normal reaction is normal smaller than unity

of the following alternatives

correct?

P. 5 only

3:

and 5 only.

and 4 only

1, 2, 3 and 5 only TUMBALL of them

of a simple penauion(uepends

(4) The period of t

the emplirude of the pendulum the mass of the pendulum

3. the length of the string the nature of the string

the acceleration due to gravity

Which of the following alternative is correct

P. 3 and 4 only

Q.

2, 3 and 5 only 3 and 5 only

2 and 4 only 1, 3 and 5 only

(10) A body falls freely from the top of a clif

and during the last second it falls 11 of

36:

whole height. The height of the cliff is

$76 £t

436 ft

R

326 ft.

S. 256 ft 96 nt

We fall forward when a moving bus decel

B

stop, this can be explained by Law of conservation of, enérgy Law of conservation of momentum Newton's third law of the motion Newton's second law of motion Newton's first law of motion

An object is suspended from a spring balance

in a lift, the reading of the balance will be greater when the lift is moving

up steadily.

up with acceleration

up with retardation

down with acceleration. down with retardation

ich of the following alt

2 and 4 only),

B. and 5 only.

None of the 5 cases,

remains constant

E

and 5 only

1971 英文中學會考試題預習專欄

** SUNLIGHT PRESS

化學科

CHEMISTRY

LESSON TWO

4th Nov, 1970.

EXERCISE 1

Fill in the following blanks

Chemical Name ghd carbon dioxide

Formula

Common Name

2g Lime

1) Aqua regia 2) Baking soda ̈ ̧

3) Borax

4) Caustic potash

5) Caustic soda,

6) Common salt

2) Corrosive sublimate

8) Chile saltpeter-

9) Espom salt

10) Ether..

1) Flowers of sul

112) Glycerine

(13) Hypo

(14) Laughing Gas

(15) Lime water

(16) Lunar caustic (17) Litharge

--(1-8) Milk-of magnesia

(19) Muriatic acid

(20) Niler

(21) Plaster of Paris, (22) Quick silver (23) Red lead (24) Salt

(25) silica

peter

Slaked lime

(27) Sugar

(28) TNT.

(29) Washing soda

(30) White lead

Fill in the following blanks

Name

-[]): AlummiumT

Enatives is true?

(2) Banum

(3) Bromine

(4) Calcium

and 2 only

the reading al

4 long time, the reason

due to the presence of pendulum by the air

Op swinging

this

-(5) Carbon,

-(6) Chlorine

(7) Copper

on the

that he acceleration of pendulum cancels with the acceleration due to gravity due to the presence of air, resistance. that the tension of string will finally become zero

due to the attractiona) holding it

'force"

The distance covered by a body falling through aliquid in a given time depends on

the mass of the body

2. the acceleration due to gravity

the density of liquids

the volume of the body

5.the frictional force exerted by the

on the body

Which of the following alternatives is true?

3 and 5only

(8) Hydrogen

(9) Iodine:

(10) Lead (11) Magnesiumi

(12) Mercury (13) Nitrogen

(14) Phosphorus.

(15) Potassium:

(16) Silicon

(17) Silver

(18) Sodium

3 and 4 only.

3 and 5 only All of them

(19) Sulphur (20) Zinc

15) Newton's first law of motion implies that

there is nothing but a force capable of giving motion to a stationary body it is impossible. for a a force to act point without opposition.

force is of the nature of change of momentum when a given force is applied to a body. The mass of the body and its acceleration

in inverse proportion.

a thread of negligible mass may not pulled with a greater force at one end than is applied at the other

Which of the following alternatives is true?

A. 1 only

D. 1, 4 and 5 only

B. 2 and 3 only

1, and 4 only

2, 3 and 4

Symbol Atomic

16

Atomic number

In the tollowing exercises is a constant.) Boyles Law can be represented by

Pk

Vk

D

ΡΙ

E. TV K

arles Law can be represented by

PT K

V/TEK

PVT k -PV/T

The Gas Equation can be represented by

PV k

PV/T k

PVT = K

E. VT/P