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Chemistry UTME / JAMB 2008 Matter & Separation Techniques
Which of the following compounds of trioxonitrate (V) will decompose to give dinitrogen (i) oxide and water when heated?
A
NaNO3
B
Zn(NO3)2
C
Cu(NO3)2
D
NH4NO3
medium Difficulty
Chemistry UTME / JAMB 2008 Acids, Bases, and Salts
When a solution of ammonium trioxocarbonate (IV) is added to a solution of an unknown salt, a white precipitate which is soluble in dilute hydrochloric acid but insoluble in ethanoic acid is formed. This indicates the presence of
A
Ca2+
B
Na+
C
Zn2+
D
K+
medium Difficulty
Chemistry UTME / JAMB 2008 Matter & Separation Techniques
Leads is used for making bullets and lead shots because of its
A
resistance to corrosion
B
low melting point
C
high density
D
flexibility
medium Difficulty
Chemistry UTME / JAMB 2008 Matter & Separation Techniques
which of the following gives a precipitate when treated with NaOH solution?
A
AlCl3
B
NH4Cl
C
Na2CO3
D
CH3COONa
medium Difficulty
Chemistry UTME / JAMB 2008 Matter & Separation Techniques
The most common ores of iron include
A
haematite, malachite and limonite
B
chalcocite, calamine and bornite
C
magnetite, haematite and limonite
D
magnetite, chalcocite and bornite
medium Difficulty
Chemistry UTME / JAMB 2008 Organic Chemistry
The type of isomerism shown by cis- and trans- isomers is
A
optical isomerism
B
positional isomerism
C
functional isomerism
D
geometrical isomerism
medium Difficulty
Chemistry UTME / JAMB 2008 Matter & Separation Techniques
If the silver mirror test is positive, it indicates the presence of an
A
alkyne
B
alkanol
C
alkanone
D
alkanal
medium Difficulty
Chemistry UTME / JAMB 2008 Electrochemistry and Redox
Reduction of alkanones with LialH4 produces
A
primary alkanols
B
secondary alkanols
C
tertiary alkanols
D
polyhydric alkanols
medium Difficulty
Chemistry UTME / JAMB 2008 Matter & Separation Techniques
The product obtained when a mixture of benzene vapour and hydrogen are passed over nickel catalyst at 180ºC is
A
cyclohexane
B
cyclopentane
C
n- hexane
D
n - pentane
medium Difficulty
Chemistry UTME / JAMB 2008 Matter & Separation Techniques
Polyvinyl chloride is used in the production of
A
glass
B
alloy
C
pipes
D
ceramics
medium Difficulty
Chemistry UTME / JAMB 2008 Organic Chemistry
Detergents are manufactured with straight hydrocarbon chains so as to make them
A
soluble
B
biodegradable
C
cheaper
D
foamy
medium Difficulty
Chemistry UTME / JAMB 2008 Acids, Bases, and Salts
If glucose is heated with concentration tetraoxosulphate (VI) acid, it will be dehydrated to
A
carbon
B
carbon (IV) oxide
C
ethene
D
ethanol
medium Difficulty
Chemistry UTME / JAMB 2008 Matter & Separation Techniques
The IUPAC nomenclature for the structure above is
Attached Figure / Diagram
Question diagram
A
2, 3 - dichloro - 4, 4, 5 - trimethyl pent - 2 - ene
B
4, 5 - dichloro - 2, 3 - dimethyl hex - 2 - ene
C
2, 3 - dichloro - 4, 4 - dimethyl hex - 2- ene
D
2, 3 dichloro - 2, 2 - dimethyl hex - 2 - ene
medium Difficulty
Chemistry UTME / JAMB 2008 Organic Chemistry
A red precipitate of copper (I) carbide is formed when ammonium solution of copper (I) chloride is introduced into
A
CH2 = CH - CH2 - CH3
B
CH3 CH2 - C ≡ CH
C
CH3 CH2 CH2 CH3
D
CH3 - C C - CH3
medium Difficulty
Chemistry UTME / JAMB 2008 Electrochemistry and Redox
Reduction of nitroalkanes, nitrites and amides is a route for the preparation of
A
amines
B
alkenes
C
polymers
D
detergents
medium Difficulty
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