二第張四聘
自三十月五年申戊歷夏
英中會考學數學(一)答案
WAH KIU YAT PO
1968
傅
六期里
日八月六年八六九·公羊七十五國民中
(40)
。歐陽鉈文。
試題額習書润
SUGGESTED Answer
化學科
(十二)
•
林錦衡·
MATHEMATICS
PAPER 1: Arithmetic z Trigonometr
Section B (60 marks),
複習題卅二
2 yr.
at 4% p. a.
1 @ Let $P. be the sum of money invésrea
The amount at compound interest = .
(測驗六)
$P (1+495
選擇題
顱
Simple "
J
+
=$PC (+42x)
(1) 氯化铁溶液放在那一種器皿中不會
起變化
(9)分解生硫
(6)受空氣氧化生硫
(C)與水作用
(2)複分解生金萤硫化物
(2)氨可用作冷凍劑是因為.
(2)沸點低
(6)熔點低
(C)易液化、
凶極易溶於水
(13)濃硫酸令木料變黑是因為
(2)鎂
(2)生熱燃燒
(6)侵蝕力強
(C)有吸水能力
(4)使水氧化
()
>
the diff between their amount
= $P* { % $? * ( 1 * * * 2)
=$Px(104110
- PX 0.0016
which is $48
Hence.
P = 43 -0.0016
30期
Px0.0016 = ±48
The sum of money is $30 wee
.
.
the gross profit is $2500 the
the net profit is $150mD
-
$50 $20,
M.. Chan's salary = 16% of $20 000 – $ 3200
= $2000 – $3.200 -$16800
The remainder on net profit
Proportion of their investments
Chan : Lee: He m¢tom: $90000: $110 200
Mr. Chas receives: $320+上叶$6800
= $3200 + $480.
8oVY
Mr. Lee recens
receives Mr. Ho
*
£ of $16800 = $ 5400
What the three cyclists be A, B, C.
of which, A's speed is
B's "
C's
16 A.
.
AD
2.2
Ste
銅
鋁
(乙)那一種水溶液令石蕊試紙呈藍色
(3)上題結果之決定是彌盧
(Q)氯化鈉
(b)硫酸銨
(C)硝酸銅
(2)碳酸氫鈉
4)電解作用
(6)電離作用
(C)水解作用
(七)中和作用
>
()
(4)溶液加氫氧化鈉溶液生棕色沉澱此
溶液
(4)
(C)
共
在面四種元素的富子織 何者届過渡性元素
(4) 2,97
(b)2, £,£
(C) 2, 8, 8.
(d) 2,8,9,2
中指
(
()
(14)通二氧化碳於石灰水初生沉澱通過
童反而澄清,因為,
(2)沉澱分鲜
(b)沉澱可溶於酸液
(二)二氧化碳過量反應逆轉 (
()
(d)沉澱再起作用成可溶物
複習題卅一解答
[.(1) Ca(HCC2+ Ne2 CO2 NaHCO + Cało2+, Mg(HCO3)+ Nazcg→2NaHCO3+ NGCOW
Mason+ Na2CO3 → Na2 504+ Mg CO L Calls + Nascl → 2Nacl+ CaClow
皆生白色沉澱
生白色沉澱因氯化銀不溶於硝酸
(3) Cl2+2HI → KCl+ I2
澱粉變深藍色因有元素碘存在
I2 + 2 Na2 S2 Q2 →¿NQIT NQ,Sa
琠受硫代硫酸釻還原石化因
再無元素碘存在澱粉復變無色。
鈉铁 碗/碟
硫氧
質子数!
26
53
6
16
J
中子数
12
30
74
6
電子数
26
53
6
8
比層
2
之
2
2
2
忠
4 J
$
M層
کی کی عمر
6
N
2
18
7
週期
3
4 5
N
族
/
4
3
Z
6
何類元素 過渡并非全国非金、非金蜃 非金蛋
端
Time taken for A to round the track, sc"
B
C
**** 76 Stc.
THE ĜO Séc.
for 11 times
A needs B
"
Go Me Xi}=21315米表
c. of them is
= Coo Ste - ro min
-
344X300
+
6)一般固体化合物對水的溶解度隨溫
度升高而
(Q)增加
(b)減低
(C)不受影响
(四)作不規則的增減
7)在同溫同壓下等容積的任何氣体
(2)重量相等
(b)原子数目相等
(C)分子数
(七)重量成簡單整數比
(8)硬水含有
0
(9)鈣離子
(D)鎂離子!
(無鏃離子
(d)
LIBRARIES
(0) Nat
Na
:
離子鍵
磷當量是
(C) SO2
[ Heroe, the aş'a time is 4 of (2a×3×5°x11)40,
700
The distance from the sun to the earth 18.95 million miles
See
And, the speed of light = 300 millions møber pu
The time
in chia per 120 mallida roviles per so..
taken for the light to traveli
93 32.4 x 300
millions niles
12 X3 X 1760
millions mike për ste....
93 X 12 X 3 X 1750
$7.4 X 300
sec
~ 498.5 sec. (to a tig.
Bei) Radius of the nemisphere = 4.00 CA
Volume
/1
ne
tog 93 1.9685) 12 1.0742 3 04771 1760 3.24IT Mum.6.7763
39.4 1.594 300 2.477/ Pen.4.0726 Exp 12.6972.
' = £ » (4"}3 = £281 c.5.
3
ካ
ļ ie the volume of steel is 12 os.
density of steci is
8.19 gm per 6,6. weight of the solid=8.19 gux
) 鈣鎂離子
(a) 3.1
(b) 7.75 (0)6.2
(e) 5
10)氣的漂白作用是
(2)還原作用
(b)氧化作用
(C)置换作用
(4)複分解作用
(
1)硫化氫的水溶液久置表面生黄色薄
膜是因為硫化氫
xx •
O:ㄨㄨ:
(b) CO2
共價鍵
(d) CSz
S:*c*:5
共價及配位鍵
共價鍵
複習題卅二解答
(2) £
(36
(4) C
(5) 2
(7) C
(8) d
(10) b
(R) C
(1/4) C
(19) d
2.19 129
0.9133
2.1074 0.4971.
Num. 3.5170
Exp.
13.0408
And KC bisects AB at Has (ises a prop.)
a FBC is #t. 4
at c
±( 3 1875 DA + i yd 3 x 25 pd = $1871 825 Vot of water in the cool
4:1875205810
NO
By Pythagoras,
+18759 6319
A 1097 gm
(or 1.097 kg)
~ $21.4 cu. nd.
Exp. 12.7 18
+
25
A
The depth of water at the shallow-end » ¿'= 1 yd.
other end = 1 +25 tan 5
=/+2×1875 23.1878 pd,
Sectional area of the swimming pool is
lat HK be the flagstaff.
of height ** Tom HaAME
AK=HK_cot 30°
45
C
From rẻ. – BHK = &K=HK_cat bot
K
kc
from rh a Cilk, CK = HK Cot砾岩
K. A C. B are points on the same hovranial gr.'
is a mexan of isos. A KAB of which KB = KA = √ × H
BC = 1AB - Foji.
Wax)= x* * sot
1
3x=
+250.
2** = 250 o
the height of the flagstaff is 20364.
20, 11) Let & be the centre
of the circle. Join OA OB
4A0B-180-165"=-15′′ Let "be the length of the radius of the circle
✪ of the Chole #271 m
(未完轉入第四張第三頁)