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[ Post UTME Begins ]:
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Matter and Separation Techniques
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BASIC CHEMISTRY
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2511
Which of the following substances cannot be classified as a heavy chemical?
A.
AgNO
3
B.
CaO
C.
CaOCI
2
D.
H
2
SO
4
View Answer & Discuss
WAEC 2010
2512
Which of the following metals exists as liquid at ordinary temperature?
A.
Copper
B.
Gold
C.
Mercury
D.
Silver
View Answer & Discuss
WAEC 2010
2513
How many isotopes has hydrogen?
A.
2
B.
3
C.
4
D.
5
View Answer & Discuss (1)
WAEC 2011
2514
Which of the following electrons configurations correctly represents an inert element?
A.
1s
2
2s
2
2p
4
B.
1s
2
2s
2
2p
6
3s
2
C.
1s
2
2s
2
2p
6
3s
2
3p
4
D.
1s
2
2s
2
2p
6
View Answer & Discuss (1)
WAEC 2011
2515
What type of reaction is represented by the following equation?\(\frac{2}{1}\)D\(\frac{3}{1}\)H → \(\frac{4}{4}\)He + \(\frac{1}{0}\)n + energy
A.
Nuclear fission
B.
Nuclar fusion
C.
Radioactive decay
D.
Spontaneous decay
View Answer & Discuss (1)
WAEC 2011
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