1968-01-06 — Page 11

-6 JAN 1968

孕除

食三站三話:

(接第三張第二頁)

山初月二十年小丁尼立

WAH KIU YAT PO

#CIO BALL

1968

「英文中學會考試題預習專欄

試題額習書润

地理科

化學科

林錦衡•

劉玉領

複習題十

infertilo as a whole with parts, especially in

the Jaffna Peninsula, underlain by porous

Limestone rocks on which no surface streams dam be sited.

7

This is the least populated part on the delano, Tamila predominate, Lrrigation ls necessary if cultivation is desired and Lanka

are numeroua, Canal irrigation has been introdused recently and new projects have been undertaken, some through international assistance provided? by the Colombo Plain, not only to provide irrigation water, but also to generate H.E.P. Qne of the most important new schozaa 18 tha/

複習項目普通定律原理學說(一)

(I)填-

題

Arakan-

Cal Oya Scheme.

Padi is the chief crop, mainly grown in the Jaffna Peninsula, the coastal areas near Batticaloa, or scattered around the tanks -

villages on the plain. The Jaffna Peninsula In

the extreme north is under intensive cultivation

whilst the big plain to its south is less.

productive, Other crops are coconuts and tusacea,; Coconuts are situated especially along the sandy coast. Salt is an important cash product

in many parts of the coast. Jaffna is the.

largest centre in this region. Tricomalee 19 a naval base with a good natural harbour along the east coast.

「Make a comparison between the Delta hegion and the Adry Zone of Burma.

TO

Mandalay - Phateau

Pegu

ΥΠΟΥ

ARAKAN

TOMA

titans

hladvis

árus

Syrian

Martaban

Bangor

Bouths of Irrataddy.

Walta Region d

(f) 物質不能

.此稱為物質不 滅定律,一般化學反應中参加反應物 之總重與生成物之總重 ●等,是此 定律的例証。

(2)任何同一純淨化合物皆由相同的幾 種元素依着一定的重量比結合而成 此稱為____ 定律。

(3)二種元素能結合成二種或多種化合 物時則在各化合物中與一定重量 甲元素結合所需之乙元素的各重量 必成 比此為。 定律。

(4)道爾頓原子說認為,物質是由稱為”

的微粒所構成,同種元素的這些微粒 的大小, 和 都相同,黑類元素 則不同。它們是不能被

——的故此只 能以来互相結合. (5)固体元素元。

之相乘積恆 等於6.4(此数字程 是 定律 (6)在一定温度下一定 量之氣体的容 積與壓力成 是為 定律。 (7)在一定壓力下一定重量空氣体的容 積樂成吐此為,定律。 物質互起作用所需之重量與其 成 比此為定律。

1) 簡單計算

(1)某金属元素之比熱是0.031,其原子

量為

·华八六九一公七十三月

則

(如聚耳,查理給呂薩克等足律), 稱理想氣体,追這種氣體應該是分子 間無吸引力分子本身不佔体積。一般 氣体皆非理想氯体,但若壓力小温震 高分子間距離較遠吸引力及本 積影响較小便較接近理想

(2)氧体克分子容積,任何氣體一克分

子量(如氧32克氮2克二氧化碳44克) ̇生標準狀况時佔22.4升此容積稱

乾体克分子容積。

(3)可逆反應:有些化學反應正反两方 向皆能進行的例如在適當條件下以 A,B两物作用製得C,D两物但當C, D.開始出現時彼此接触作用亦能轉 而產生A, B,大部份化學反應皆屆此 類。如哈保法以氣與氣製而氨间 時分解為氮與氫

Na + 3 H2 = 2 NH3

(4)化學平衡,

物質與生

自左至右

在物正應再改

可逆反應中如作用 到一定之比時則 度與自右亞 左之逆向反應速度相等因而反應物 與

滅而正逆反應速度 因而亦不再改變此時稱達到化學求 衡。

(5)電離作用,電解質在溶液或熔融狀 態中分子分散成帶電的質粒(離子)而 存在此作用稱電離作用.如HCl→H+ (6)水解作用:當類溶解於水時同時 與水作用成為酸與鹼稱水解作用, 如醋酸鈉溶於水

(2) 20432克某金属在NP時置換得

氬2.24升此金蛋营

七較

(3)24克碳與32克每 結合成甲種化合物

3克碳興8克

成乙種化合物

化學變化: 有新物質生成 即本酒己改變

則興1克碳結

氧重在甲種為

符合:

克在乙種為

(f)混合40升氮與30升氫(若一大氣壓)

壓縮為10升,則氮之分壓力為

HONGKON

BRARIES

氫之分壓力高____

混合氣体之總壓

力為根据的是

的變

定律和

不易回復原狀

CH2COO + Na

CGCOOH..

NaOH.

物理變化 無需物質生成 即本耐不受只是

易回復原狀 只有光熱

常伴有光熱 以罩-物質而

重量並無改雙

非金屋

比重狀態大:固体较小氯夜

Dry &one

Cropa: Hillet

Rico Sesamum Groundnut a

Cotton

Poas

Joyn Benga

定律。(温度不變)

5) 1.04克鋅投入硝酸銀中可換得銀

3.46克若鲜當量為32.7則銀當重為

(6)壓力不雙時一定要氣停在50°C時容

積為3230°C在100°C時容積

(7)在MTP 時氨氣22.4升重17克在0°C

22.4大氣壓時1升皇.

̇複習題九解答:

(I)(1)理想氣体体若能遵從氣体定律

会展光澤有

延展性有 熔點

較低

不良立体

小較高 僔通性 良導体 敲打聲音响亮

不响亮 與每作用 無作用

生成化合物 氧化還原 是還原劑 是氧化劑

易成陽離子 易成陰離子 與酸作用 罡換風成掹不能成盏 氧化物 多是鹼性酸性

氯化物 是真鹽類非真鹽類

Seals (milog

Sitteng

"The Dry Zone of Bura extends between Shwabn. `and Mandalay in the north and Frome in the south and de delimited by the 40"

Regtoy Lonludes two deltes toobyst. The Delta.

the lower Irrawaddy and ats great delta, and the Lower Sittang and its much deiller delta. Variations, exist in the physical environment as well as the land. utilisation between these two SONED,

There are deviations in climatic features, The Dry Zone, being a rain shadow, receives less than 40o of rainfall per annum. The Delta Region experiences heavy rain in the middle of the year. (total -60 p.a.) Temperatures are more extreme in the Dry Zone (above 85°F in the summer) due in part

1dutance from the moderating effect of the sea end in part to the sheltered nature of this lowlang area, Winters are cooler up here owing to latituda,

So far as topography 19. concerned, both are predominantly lowland and covered with river alluvium. In the Dry Zone, the frrawaddy is joined by its major bributary, the Chindwin. At the Gulf of Martaban, an extensive delta of normal type witn

any distributaries is exhibited.

The character of the agriculture in the ury Zone is that of family sa llholdings of subsistence. dature. This makes the farmers independent of Food :supplies from outside, but many also grow cash orope as a subsidiary interest. In the Delta Región," the land is frequently owned by an absentee landlord and the farmer merely rents his land. A considerable. proportion of farmers are of Indian origin and therer is a system of paid labour for work in the fields.

Varied crops are grom in the Dry Zone. The important ones such as millet, groundnuts, sesamum, and cotton are almost confined to this region. Peas. and soya: beans are also grown for home consumption. Groundnuts and sesamum provide the vegetable oil used in Burmese cooking and are also cash crops. The growing of padd is not as importarit Here, On. the other hand, almost the whole of the Delta arem. is devoted to the growing of rice, although fruit trees and vegetables are grown near the houses, This is an area of monoculture. The surplus rice: grown is sold; it is a food crop and a cash crop. Rice from this region forms 60% of Burma's exports,

In the Dry Zone, both dry farming and irrigated: farming.aze practised, Crop rotation; is used to preserve the fertility of the soil. On the delta,

rice fields are irrigated. Similar to that in the Dry Zone, the river water is not used to irrigate the fields to any extent, the natural rainfall is kept in the fields by small bunds or in tanks behind ama12 dams. Since there is only one major crop, crap rotation is not: practicable.

Bullocks and buffaloes are numerous on the farme in the Dry Zone. There is a surplus to be acid to farmara in other parts of Burma. But these animals are faw on the Delta providing only enough manure seed beds.

Oil is obtained from the Yenangyaung-Sabe Rogir Most of the oil produced is sent by pipeline to Syriam, near Rangoon, Small amounts are refined on the oilfield at Singu for local use. The Delta of Southern Burma does not possess such a resouras However, timber is extracted from the nearby hills in both regions and, food-prodessing industries are present in the major urban centrea, Rice mills dumerous in the Delta Zone.

Mandalay is the centre for the ury zone whereas Rangoon is the capital and the most important port of Burma aituated ontha, dej

Questions for next week

Divide Indo-China into geographical regions on a sketch map. On it show the chief drainage system. and the capital cities for the four political divisions. Give an account-on-each of those ra