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[ Post UTME Begins ]:
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2346
If the difference between the electronegativities of two elements is large, the type of bond that can be formed between them is
A.
covalent
B.
dative
C.
ionic
D.
metallic
View Answer & Discuss
WAEC 2007
2347
Which of the following compounds has hydrogen bonds between its molecules?
A.
HF
B.
HBr
C.
HCI
D.
HI.
View Answer & Discuss
WAEC 2007
2348
Which of the following species does not contain a co-ordinate bond?
A.
AI
2
CI
6
B.
CCI
4
C.
H
3
O
+
D.
NH
+
4
View Answer & Discuss (15)
WAEC 2007
2349
14.8 g of a salt (z)dissolved in 250 cm
3
of distilled water gives a concentration of 0.80 mol dm
-3
. Calculate the molar mass of the salt (z).
A.
13.5 g mol
-1
B.
18.5 g mol
-1
C.
47.4 g mol
-1
D.
74.0 g mol
-1
View Answer & Discuss (2)
WAEC 2007
2350
How many atoms are there in one mole of hydrogen gas? [Avogadro's constant = 6.02 x 1023mol-1]
A.
1.2 x 10
23
B.
6.0 x 10
23
C.
1.2 x10
24
D.
6.0 x 10
24
View Answer & Discuss (3)
WAEC 2007
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