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Chemistry
WAEC 1999
Chemistry 1999 WAEC Past Questions
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6
Calcium atom ionizes by
A.
gaining two electrons
B.
losing two electrons
C.
sharing two electrons
D.
gaining two protons
View Answer & Discuss (1)
WAEC 1999
7
Which of the following properties increases down a group in the Periodic Table?
A.
Atomic radius
B.
Electronegativity
C.
Electon affinity
D.
Ionization energy
View Answer & Discuss (2)
WAEC 1999
8
In the Periodic Table, the elements that loss electrons most readily belong to
A.
Group 1 A
B.
Group 11 A
C.
Group 111 A
D.
Group V11 A
View Answer & Discuss
WAEC 1999
9
Which of the following reactions is not feasible?
A.
Cl
2
+ 2Kl → 2KCI + I
2
B.
Cl
2
+ 2NaF → 2NaCI + F
2
C.
Zn + CuCI
2
ZnCl
2
+ Cu
D.
Zn + 2AgNO
3
→ Zn(NO
3
)
2
+ 2Ag
View Answer & Discuss (4)
WAEC 1999
10
Which of the following halogens is the most reactive?
A.
F
2
B.
Br
2
C.
l
2
D.
Cl
View Answer & Discuss
WAEC 1999
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