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[ Post UTME Begins ]:
View The List Of Schools That Have Released 2026 Post-UTME Forms.
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BASIC CHEMISTRY
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Introduction to the tetravalency of carbon
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2206
What term is used to describe an oxide whose aqueous solution turns blue litmus red?
A.
Strong electrolyte
B.
Acid anhydride
C.
Amphoteric oxide
D.
Basic oxide
View Answer & Discuss (2)
WAEC 2003
2207
The pH of 0.50 mol dm
-3
solutions of HCI, H
2
SO
4
and CH
3
COOH were measured. which of the following statements about the values obtained is correct?
A.
the pH value was equal to 5 in each case
B.
the pH values of the HCI and H
2
SO
4
solutions were equal
C.
their pH values added uo to 14
D.
the pH value of the CH
3
COOH was the highest.
View Answer & Discuss (3)
WAEC 2003
2208
Which of the following processes involves neutralization?
A.
Hardening of oils
B.
Souring of milk
C.
Charring of sugar
D.
Liming of soil
View Answer & Discuss (4)
WAEC 2003
2209
Sea shells contain mainly CaCO
3
. Calcium oxide can be prepared from sea shells by
A.
adding dilute acid
B.
heating at a high temperature
C.
reduction with CO
D.
adding dilute NaOH
(aq)
View Answer & Discuss
WAEC 2003
2210
Which of the following statements about an exothermic reaction is correct?
A.
the products have less heat content than reactants
B.
the system absorbs heat from the surrounding
C.
the activation energy is high
D.
the enthalpy change is positive
View Answer & Discuss (1)
WAEC 2003
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