1982-04-29 — Page 28

1982

·P and Q are BEST

described as

算四第張七第日六初月四年戌壬曆夏 WAH KIU YAT

中學會考試題預習專欄

品

(廿九)

明德出版社朱宏林 提供資料

化

Chemistry (29)

Reginald W. Chu

HILL & DALE PRESS LTD.

1. Which of the following

is not a property oẸ conc sulphuric acid?

A. A dehydrating

agent

B. A non-volatile acid C. An oxidizing agent:

D. A drying agent

E. A typical strong.

acid

Which of the following. -guses may be collected

by displacing aic downwards (or upward delivery)?

(1) nitrogen monoxide:

gas.

(2) chlorine gas

(3.

*.

ethane gas

hydrogen gas

(4) only

B. (1) and (4) only 0. (3) and. (4) only (2) and (4) only D. (1), (3) and (4)

only

A certain top has. 23 electrons and a mass number of Sb. If the charge of the ion is

43 then the number,

of neutrons in the nucleus is

A-33

B-79

6.21

D. 26

1.30

and have the

compositions below言

12

11

19

10:

12

10.

No. of

Now of

No, of

protons noutrons electrons:

辦心中年青籬石

計劃 技

劃練巧外

A. isotopes

D.

B, cations.

C.allotropes:

anious

E noble elements

5. The electronic

石野外 青年中心為推廣到外活

configuration of the

elementa X and Y are (2,8.8.2) and (2.8.7) respectively. A

compound Z is formed hetween X and Y. Which: of the following ⠀⠀ atatements about 2 is INCORRECT?

A, The most probable

formula of Z is XY

B. Z is formed by

electron transfer.

D. Z conducts

electricity when it is in the molten. state.

EX Z is a solid.

Which of the following

statements about the Periodic Table is

INCORRECT?

A. The elements with

similar

chemical

properties "are în the same. vertichl group,

There are more metals thni non-metals.

They are listed in the increasing ørder of atomic weights.

The most reactive ron-metals are found in the top right-hand corner of the table.

E. The melting points and the boiling points of the: elements increase down a group

The shape of aumonia molecule can be described as

linear.

tetrahedral C. angular

Pyramidal.

E. V-shaped

"Diamond and graphite are different forms of the same element.

carbon."

Which of the following is/are evidence of the truth of this :statement?

(1)Both are similar

in appearance.

(2)Both have the

日期的五月十七日 至六月十八日逢星期一

時間:下午七時至 八時, 啦......十五元正

名額:三千名

名額:名。 放班,參加者而要參加一 :

六

沓用十五元。

時間:下午五時處

C

名國民梅雀十五人在筋、高至十四) 協助邨內同學家長明瞭學位分配

梨木樹邨會堂舉辦

將山五月三日起,遙

升中輔導座談展覽

開萬報名參用,各

報日僑華

same melting point.

(3)Both conduct

electricity,

(4)A given mass ör

either will yield the same mass of

carbon dioxide on

a combus- complete tion.

(4) only

B. (1) and (2) only.

G. (3) and (4) only

D. (2) and (3) only E. (1), (2) and (4)

only

9. At 25° C and 770 mmμg

of pressure, Locm) 非常 oxygen consists of the same number of molecules us

3 of hydrogen A. 1 cm

B. 44 cu” of carbon

dioxide

C. 16 cm of helix

D. 9. cm of water.

of nitrogen

10. When anhydous::

iron(II) sulphate is heated stroucly, the reaction, taking, place is represented by the following equation:- 2F¢S84 (») →→ Fe10,(s)

+S02(g) +80_(g)

What would be the volume of the gaseous products, measured at s.t.p., on heating 3.04 g of iron(II) gulprate atrongly?

112

448cm

56.cm

In a particular experiment 20 cm of a gaseous element X_ combines with 30 cm3 of another gaseous element V to give 10 cm3 of a gaseous product Z. If both

X and Y are diatomic, what will be the most

probable formula of:

Xu Yo XY

Xzx2 F. Xg

八八千匹版、四"

·期:五月十七日

米辣,利用區內的泳,至六月十八日預期一|大時三十分,

葵盛泳池舉行•七班各適其適

四期星

日九廿月四年二八九一群公年一十七國民奉中 版邨新益灣育教

12. A mixture consisting

of 20 ca of hydrogen,

10 em of methane and

50 cm3 of oxygen was exploded in an eudiometer,whats

would be the volume

“of the æna(es) left

behind after

explosion? (All

veinmes were measure 家装流ume temperat ture and pressure.

50cm

50.

60 cm

13.5.74g of a hydrated

metallic sulphate Formula MSO,•×¤ ̧¤• formula MSO

A

(where. M denotea the metal) gives 3.22.g of auuydrous salt on heating. What is the value of x in the formula?

ANI

B. 2

D. Z

E 10

Which one of the following compounds does. NOT vield oxygen. on hesting?

Potassium nitrate B. Copper(II) nitrate C. Silver(II) nitrate D. Ammonium ni tra te E. Lead(II) nitrate

15. An excess of powdered zine carbonate i辖 added into dil H2SO4

until effervescence stops. The pH of the solution

A increases to about

B. increases to about

C. decreases to about

11. decreases to about

E. remains the same.

16. Which of the

following acids will form two series of acid salta with sodium hydroxide?

A. HCLOIL

D. HGPO%

F. CH COOL

Which of the

葵涌康樂迎合夏季

【選運並非規定時間而是機動性倔强,居民相信對干防止不法之徒活動會有 *居民認得綦盛心和遇夫大师人口眾多,分稱與部門邨實際等如兩部, 一定的嬌果。他們表示希望ˊ局鞦褘保持适些措施。增進邨民安居樂業、 不過,現時莫盛部队的治安也都强了!情况已無復寧路。由於舒挥的

名額+番名、

| 十五分至七時四十五分

following substances

when dissolved in

water, turns blue

Fí émis red?

A. MILCE

B. Na CO2

C. KNOT

n.

CHţCOONn

18. A student has spilled some concentrated sulphuric acid on his hand. The first thing

lie has to do is to. wash his affected hand withi

A. Sadium de

solution

K„dilute sodium

hydrogencarbonate

Covinegar.

D. water B.bium chloride

solution

19. What volume of 5 M

sulphuric acid must be diluted with water in order to prepare 450 cm2 of 0.1 M sulphuric acid?.

25 cm.

cm

em

20. When 25 cm of molar

sodžum hydroxide is

golar sulphuric acid, the resulting solution will consists of water and

A...sodium hydrogen-

sulphite

sodium sulphite sodium hydrogen sulphate

D. sodium sulphate F. sodium sulphide

21. On adding sodium

hydroxide solution into a colourless aqueous solution X. precipitate is abserved. which

dissolves in both ammonia solution and soitium hydroxide... solution. Which of the the followingcationS: is most probably

present in the

solution X?

A. Zn

c. Cu

E. Pe

g of an oxide of metal X (oxidation number +2) reacts with excess dilute hydrochloric acid give 9.5 g of its chloride, The

S

of X is most probab

tive atomic mass

A... 12, B. 224

C. 36

D.. 48 E5

23. X, Y and 2 are three

metals, Carbon at reds heat will reduce the oxides of Kandy t not the oxide of 7. Y can remove oxygen. from the oxide of X. Basing on the above information, arrange: the three metals in: decreasing order of their reducing power.

AUX

C. X

F. Y, Z,

24. Which of the

following oxides, at red-hot, can be reduced by carhôn but not by hydrogen? A. copper(II) oxide B. lead(II) oxide...:{ C. calcium oxide D. zinc(11) oxide E. aluminium oxide

The aqueous solution of a compound X gives a white precipitate

adding into it. acidified silver. nitrate solution, and gives au alkaline gas when heated with sodium hydroxide solution. The compound X probably

most

A, ammonium bromides. B. ammojìíum sulphate

acumonium

ANSWERS:

TEO

2 C7

38

hydrogencarbonate

potassium iodide ammonium chloride

[1B 16 321A D. 12 8 17 A 29 B

A 13 D 18 D 23 5. 4 B9 E14D 19 C_24 D 5 6 10 0 15 1 5 C 10 D 15 B 20 € 25 E

邏巡增探警子帽藍隊兩 改已環|治兩|東|葵 善大境安邨西盛

索勒受會認否戶商・跡歛趨已擾滋竊爆

業樂居安

維狀現

珠崮亦在越内不断醒中遗。

·警員已調經常駐遗蛴求 現時,兩隊「蓋帽子」

查邨中各舉案盟婚之夜, 方幕即探取了明實應付的步

門兩區,此型有些裝

·意見,並非圍實地視察及製

保望期

民

居

軍裝及岠裝警探明巡置之

在警方加強術活,派

·從升起居传的不安, 經過當地警方上管 槃

民之間的不伦快,一

一些不...之旋作騷擾及 盛東邨皮蛋述方面·含有 在前些「段時期,包括:

大爲改善了!居民們都表示

葵涌

夏沫季開始·英雄低麦地利·

新郎版

欣慰。 :

民舉行商討,民瓦拼交換

初染練班

「Ê「啥好朋」速汇 去之類 你走,你例如將症戶外的装 因爲實際並無太多时鸨可供

一些商戶培霰谁受竊或破 等毅临居民指出:過去和中[三、五》 摊包括互助委讨会代表 | 至七二二星糖一 鎖跂置好,愆出强慢性質, 十五分至七時四十五分,出二日至七月廿四日 [

冰晶輭甜兩班:

自明:五杼十四日

[日期間五月至七月什当日星期五

九時。

HEK) ... 時間下午七時至十分至九時三十分, 時間:下午七時

,所性示屬無患,其意附實令人尋味

[广七)初融蔺律泳

小三日至七月什五日 [

雖經保證,亦不得要領, 並無將愛關囂的,而木門是不雄被爆破,而遭受損失, 德指出遭受爆糕的住戶大多是大好走廊的「街頭」或「街尼」 二、因》!.. 當警方向有關商戶調查是否曾减「幼染一時,則」灼表示堅決否認一個練班,舞者需要參 至於被母痛的住戶,明多與對門而不小心有隔,當全家大小都外出時

時

星期五》: ,日明言五月十八

時間:上午十時至

時間:下午六時四

他七月什三日一星蛸

名額:每班三十名

我們做塔遞告過不亞毘然,而造較易於「散水」的決欲·悛製建意防範

費用;八元正。

〔八祧极跳水川

至七月十七日(整期六 日期:五月十五

日期:六月七日至

增辦多項游泳訓練

.費用,十五元!

宮排:三十名。

工業中學。

地點ű下錢和官立 費用:八元正。.

说到訓練 七月十五仟(奥斯 H期:五洋六日至

{*初段流行飩

時間:下午七時三

地點:下登通言立

- 費費;八元正。 名額:三十名。

·地點大裔社區):彭鸿電話:安1

·四四三六一

「海衆安街二十一號三樓

嶲處葵涌區醫事崴(芬

報名費業取處及

().

▲ 中心犽提高兒童

十分至九時三十分。

▲二四時被名地點:康樂體育事

其他各類訓練項目亦多 [熱

迎合着暨弱的來臨。

日期。弦月十八日

葵涌區辦事處特於下一

二男徼初級青至六月十七日星期二 星期六

五月你安排的

【樂活動中,增加多项游

一池提供青少年居民

,玩心

·名類:三十名。

與新界市政署聯合空辦

上時,

博悦多午六時至

费用:十五元:

[五]女子青年組

的游泳班,將假

·名額:每班三十宮

曾泳班(十五以上)

組區社口窩大

唱童

團合

涌 西

兒葵

班學初舞蕾芭設並

興

特區辦斯一 趣

.贷瓿兒童合唱團

•且與茶灣區粢

務處聯合主辦芭

样細內容如下: CORE

费用五元

日期:五日十八

(十五歲以 三男子青年習至六月十七

要加

,歡迎五夜至六做男女

【者可由家長陪同華人

至六月十八日遗管兩 期五月十七日—分至八時,一 時間:下午六時用

(SD).

下午五時。

·地斯·大道怒米上四時至五時(第二班)四〇——二八五九二

十五人費用:每期八元。地點 ,日期二五月十六日)。名額 費用三元正。“至脚第一班下午[啊,或〇一八五九 名額:四十四名六),時間下午三時可到大窩口齔區中心進

章訓練班,記者湖、期六下午二時至三時。地點:大窩口北庭中心粮

·時間上午九烩道 H明:五月十五打一:半;八萬至十二, 至七月十七日,逢星明,潑名現已開始。详情

·堂。半齡八級至十说,團費:五元正(三月 〔丈芭街舞初學 大寳口北區中心產堂

按中一學位分配辦法, 各升中同學及家長,明

爲協助梨木樹邨內

·梨木樹肚區會堂及教育 兩天-聯合舉辦「梨木 響學生輔導組將於作

在進入中学時所可能遭 遇的困難,可會福利署

物,地爾布南費應用,露營然巧及戴還設計、服婕:將干今日上午十時半至一時,下午二時至六時及晚上七時至十時,在梨木樹社區 辦計劃 體的鈴、 圓級及可供熱大之船上」,散連梨木樹都內熱升中同學及家長參加。曾用全免。現將各項活動滿情 ┬蔡列的秘密,如野外装主談會方面切包括被講,公開提問及個別諮詢服務,講還將包括山教育署學生崎導主任葉和順先生上 做著遍通吃巧,創作紙」之「梨木樹必學校網及升中派位辦法的網釋」,冷山社會工作專業人士主講之「初中生所遭遇之 一括盡處及實習,透過一「資料姿女」,內容包括展党有關學校網之分佈,派位酬響,小學輔導工作及學校社會工作商介,座

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邊往石商社區中心四樓查(岩)

Y

〇四六。一)

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在詢電話:社會殿科舞無以棋肚區會堂:Ol」二大三四〇二。教育菁學小豬導組:三十三