BLU AN #TARI
WAH KIU YAT
中學入學試試題預習專
國中英文中學會考試題預習專欄
英文科
王鮮生
化學科(二)
王錦釗。
Time allowed : 25 minutes.
Fill in each blank with an adjective instead of the word
on the left 1
(a) honesty
Examples ang
The boy is not
She gave me
LOOK
(b) truth
She told me a
(e) difficulty de has done some
(4) glory
(*) depth
Our soldier on a
He dived into the sea which is
tory,
sung.
Choose the
woru to go where there. 19 an X... the Number of the word in the spac
space on the
the ri
Do
not write the word,
(1) Be could X see because the light was very díu
(b)
1 scarce.
2. hardly,
You X be kind to animais.
ought 2. need
Dick has brown X.
hust; 4. only
should,
may
hair
(0)
(d) He gave ne
ons of his. X.
coins 2. 001
money
dollar
(a)
CHEMISTRY (2)
a) in order to show experimentally that air contains water vapour, air is aspirated through a U-tube containing fused chloride. The U-tube is weighed before and after the experiment. The increase in weight gives the weight of water vapour in the air that. La passed through the U-tuba
期
日九月一十年六六九一脚公年五十五国民产中
PHOSPHORKS
共
fucce
INGRIASIS IN WẸGHT)
ALPIRATOR
-AIR from which "The poissia-das-
BEEN REMMED
lat volume of air originally in one ourette
left in the burette
oxygen in the air
Hence percentage of oxygen in the air
The litmus paper túras red, indicating that the gas, lastn spidio ocida.
aspirated through a Drechsel bottle containing lime-watere a) Pats piece of damp blue "litmus paper in a gas jar of cha gari
show experimentally that air contains carbon dioxide, 17
line water will, Tum milky owing to the insoluble chalk formed by react Lon between carbon dioxide and lime-water.
CO
carbon
Ca (OH)2
lime
Ca C03 calcium carbonate (chalk)
(b) add dilute nydrochloric acid slowly to the dolid. The solid will dissolve forming a clear solution when the solid just dissolves, the solution is distilled. The liquid distilling off is tested and found to be pure water.. The remaining crystalline solid is found to a salt, magnesium chloride: The magnesium oxide nas neutralised the hydrochloric acid to form a salt, magnesium chloride and water Magnesium >xide is therefore a base
Air from Murchf
CARBON · PIOXIDE
·HAS BEEN REMO=&D⠀
MyO 2 HOÀ
(c) Repeat experiment (b) using zinc
oxide It will be found the zine hydrochloric acid to form a salt, Zinc oxide is therefore a base
Mg C12.
oxide instead of asgnesium
-oxide, neutralises tine chloride and
200
2801
at last she got X the bus
out
10
Underline the word that has the same end sound as the
on the left
Example Storm
(a) Noise
(b) Side
(c) Mens
(6) Day
(e) Heard
alars / born / warn / farm / hàru
horse/toys/buys / house wise white. kin / sight 7 cry / ride
bit / cheap / fit / nic
hot / fine / hay / die / said
hurt / word wood / herà / hear
Fill in the missing words in this table
Yesterday.
(a) The sur.
(b) Ro tried to do it.
(c) She
down
Everyday
Now
the sun shines. The sun is shining.
He do it
She lies, down, Shi
Underline the right words whithin the brackets
The book is neither graan (nos, or) blus (6) Thay (bath, together) want to the zoo.
Te cross the harbour in a (steamer, ferry)
want to (borros, land) a book from you. (e) Tobacco is psed for (eating, drinking, smoking)
down
Fill in the brackets with the proper NUMBER of the part in
List B that belongs to each part in List A.
List A
(2) Jay took, a sho
(6) She failed
(0) Although he was poo
(d) I know
) Make hæste
({) She never talked
where ne 13vum.
but she smiled.
se he was told
we soon turned back.
( ) 5 in order that she mighs
there in times
() 6. he could do it.
7. but she tried agai
be as happy
9 or you will be lata,
Give the word which should come between each of the follow-
ing pairs
Simples
(4) Good
zorda
hot
Warn
Juture
evening.
roummer
co14
Meny
Change the following:
Into the negative forme soldier found the lost gun
could finish the exercise
ery soon.
(0) The boy caug the ball in the air
The balloon rose up quickly
My sister told me an interestin
(4)
each blank with a suitapi atman
(e) To show that air contains oxygen
LIME
K-WATE
A clean dry crucibla is weighed, A clean piece of magnesiu ribbon is then put into the same crucible and the whole is
weight of the magnesium is obtained by
the first weight from the second. The crucible the crucible in such a way that air can enter
support the burning of the magnesi
the crucible. When the cruci
OXFEED®ing the
the magnesium burni
the cruc
the game physical and
the crucible
is an Increase in weight about by chemical change with
2 MgC
A piece or yellow phosphorus is stuck si the end of à long thick piece of copper wire, and the whole is put into a graduated burette, the open end of which is lowered into a large beaker of water, The tap is opened in order to make the levels of the water inside and outside the burette the same. The volume of the air is then read and the tap 1s closed. The phosphorus amoulders slowly and water rises vert slowly up the burette tube. After a few days, the water
rising up the tube hater is then added to the beaxs the water inside and outside the burette is at the vane
The volume of the gas remaining in the buratte
They fought
(4) She will come
(e) They were fighting
Read the passage carefully
size,
g'olook.
the moment.
One day the Emperor or Japan gave the greeT Emperor of Ching a large parcel. In it was a toj. nightingale covered with jewels. It was not real but it could sing by clockwork,
It sang the san song many times. The Emperor and his friends heard it thirty-three times. Then the Emperor said that it was time to listen to the real nightingale. But the real bird suddenly flew away 80 everyone said the toy bird was much better than the reale
The toy bird sang every day for a year. At last something broke and the music stopped. The watchmaker manded it.
But he said that the bird was old and The Emperor, was very sad and he let the bird sing only once a year. After five years the Emperod became 112. Be begged the toy bird to sing, but it. remained silent,
The poor Emperor thought that he
would die.
All at once a beautiful song came from the window. The real nightingale was there.
Thank you, thank you!" said the Experor beautiful little bird. Now I know who you are!" Boon he began to get better.
"You
And
"You must never leave ma again," he said, shall sing only when you want to%
live in the palace. said the nightingale. Tulike Then I will sit on the branch
"many-congs to you.
four windo.
word
"Let me come
25th
your misi
of December
tune
Now add concentrated caustic soda slowly to some sine oxide in a beaker and stir gently It will be found that the oxide. dissolves in the alkali to give a clear solution of a soluble salt, sodium zincate The zinc oxide has neutralised the alkali to form a salt, sodium zincate, and water. Zine rige is therefore an acidic oxide as well,
"200" • 2NaOH
sodium zincate
Substance.
potassium nitrate (KNO2)
mercuric oxide (HgO)
red lead
(Pb30)
Residue
potassium nitrize (KNO,)
marcury (Hg) Litharge (Pb0)
Q. When mercurio oxide is heated strongly in a tro¬giene Lest "Lube,
of
it first of all changes in colour from red to black. Soon, drops
silver-coloured liquid condense in the cooler parts of the tube forming a silver band. When a glowing splint is put in the mouth of the test-tube; it is rekindled When tube is now cooled the residue slowly changes in colour from black to its original
colour
QUESTIONS FOR NEXT WERK.
330 gas, of a eixture or potassium chlorate and manganese dioxide on being heated gave 265 c.r. of exygen measured at 17,0 and 765 mm What percentage of potassium chlorate was there in the mixture? How would you show that manganese dioxide serves as a catalyst L. This reaction, and does not decompose to evolve oxygen?
DEBUTADE Britą expanzni azt une changes that occur when a piece of calcium is placed in a beaker of water containing a little rad 1itmus:
Arrange the metals, calcium, iron, sodius, potassium, magnesium – order of activity, giving reasons from their rauctions with water to Justify the order,
State Tive uses to which hydrogen is put.
The Emperor of Japan gave the Emperor of Chỉ na
a clock.
Jewels.
a toy bird.
cage.
The toy bird coul sing only
1 thirty-three song..
one song.
the songs it liked.
happy song
(c) Later the toy bird could sing only rarely beacuse
it was covered with jewels.
the Emperor did not like it
the Emperor was very sad
it was old and worn.
The Emperor began to get better because)
the doctors helped him
watchoaker mended the toy-bird
the toy bird was silent.
the real bird came back.
People liked the toy bird better than because
it was a gift
they had more time to listen to it
it could not fly away
it sang the same Bong.
The real nightingale could not live in
cause.
tanved to be free.
not like servants,
not sing.
people.
palace
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