Question Library

Browse, filter, and study verified past examination questions with step-by-step mathematical reasoning.

Launch Interactive Practice
Searching 18,000+ Questions... Sifting topics, KaTeX formulas & verified solutions
Showing 13876–13890 of 29821 verified questions
Sort by:
Chemistry WAEC / WASSCE 2007 Organic Chemistry I: Hydrocarbons & Crude Oil
Which of the following substances is suitable solvent for perfumes?
A
Benzene
B
Ethanol
C
Turpentine
D
Water
medium Difficulty
Chemistry WAEC / WASSCE 2007 Stoichiometry, Mole Concept & Volumetric Analysis
The complete hydrogenation of C 6 H 6 in the presence of nicked catalyst at 200oC gives
A
C6H8
B
C 6H10
C
C 6H 12
D
C 6H 14
medium Difficulty
Chemistry WAEC / WASSCE 2007 Stoichiometry, Mole Concept & Volumetric Analysis
Which of the following pairs of substances can be distinguished by use of NaHCO3 solution?
A
CH 3CH2OH and HCOOCH3
B
CH 3CH2OH and CH3COOH
C
CH3COOH and HCOOH
D
CH 3CH2OH and CH3OH
medium Difficulty
Chemistry WAEC / WASSCE 2007 Organic Chemistry I: Hydrocarbons & Crude Oil
Alkenes undergo the following reactions except
A
addition
B
hydration
C
polymerization
D
substitution
medium Difficulty
Chemistry WAEC / WASSCE 2007 Stoichiometry, Mole Concept & Volumetric Analysis
Hydrocarbons which react with ammoniacal copper (l) chloride solution conform to the general molecular formula
A
CnH2n
B
CnH2n
C
CnH2n+2
D
CnH2n-2
medium Difficulty
Chemistry WAEC / WASSCE 2007 Stoichiometry, Mole Concept & Volumetric Analysis
Which of the following compounds reacts readily with sodium to liberate hydrogen?
A
CH3CH2CH3
B
CH3COOH
C
CH3 CH2CHO
D
CH3 CH(OH)CH3
medium Difficulty
Chemistry WAEC / WASSCE 2007 Organic Chemistry II: Functional Groups, Polymers & Biomolecules
Glucose reduces Fehling's solution on warming to
A
copper (l) oxide
B
copper (ll) oxide
C
copper (l) chloride
D
copper (ll) hydroxide
medium Difficulty
Chemistry WAEC / WASSCE 2007 Metals, Transition Elements & Extraction
from the following ores is iron extracted? I. Haematite ll. Bauxite III. Magnetite IV. Cassiterite
A
l and ll only
B
l and lll only
C
l, ll and lll only
D
l, ll, lll and lV
medium Difficulty
Chemistry WAEC / WASSCE 2007 Nature of Matter & Separation Techniques
Which of the following methods can be used to separate a mixture of two miscible liquids with different boiling points?
A
Decantation
B
Distillation
C
Evaporation
D
Filtration
medium Difficulty
Chemistry WAEC / WASSCE 2007 Stoichiometry, Mole Concept & Volumetric Analysis
The following substances are heavy chemicals except
A
sodium trioxocarbonate (IV)
B
tetraoxosulphate (VI) acid
C
lead (lV) tetraethyl
D
sodium hydroxide
medium Difficulty
Chemistry WAEC / WASSCE 2007 Metals, Transition Elements & Extraction
Pig-iron is brittle because it contains
A
a high percentage of carbon as impurity
B
calcium trioxosilicate (IV)
C
unreacted haematite
D
undecomposed limestone
medium Difficulty
Chemistry WAEC / WASSCE 2007 Kinetic Theory of Matter & Gas Laws
What volume will 0.5 g of H2 occupy at s.t.p? [H = 1; 1 mole of a gas occupy 22.4 dm3 at s.t.p.]
A
2.24 dm3
B
5.60dm3
C
11.20dm3
D
44.80dm3
medium Difficulty
Chemistry WAEC / WASSCE 2007 Stoichiometry, Mole Concept & Volumetric Analysis
Which of the these metals will not liberate hydrogen from dilute HCI?
A
Copper
B
Iron
C
Magnesium
D
Zinc
medium Difficulty
English Language WAEC / WASSCE 2007 Antonyms (Opposite in Meaning)
In each of the following sentences, there is one word underlined and one gap. From the list of words lettered A - D, choose the word that is most nearly opposite in meaning to the underlined word and that will, at the same time, correctly fill the gap in the sentences. At first we found life in the town very exciting but soon it became rather..............
A
tiring
B
disturbing
C
burdensome
D
boring
medium Difficulty
English Language WAEC / WASSCE 2007 Antonyms (Opposite in Meaning)
In each of the following sentences, there is one word underlined and one gap. From the list of words lettered A - D, choose the word that is most nearly opposite in meaning to the underlined word and that will, at the same time, correctly fill the gap in the sentences. When we were busy discussing weighty matters, James introduced a .........issue.
A
light
B
meaningless
C
common
D
trivial
medium Difficulty
Page 926 of 1989