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Instruction
1. This
paper consists of section A, B and C
2. Answer
ALL the question in section A and B and THREE(3) questions, including
question 6, from section C in the answer booklet provided.
3. The
marks intended for section A and for each question or part of it, are indicated in brackets.
4. Remember to write
your Examination Number on every
page of your answer booklet.
5. Wherever
necessary the following constants may be used.
(a)Atomic masses
H=1, C=12, N=14,
O=16, Na=23, Cl=35.5, Ca=40, Cu=63.5, Zn=65,
Zn=65, Ag=108,
Pb=207.
(b)Avogadro’s Number=6.02
(c) 1 faraday= 96500C
(d)Gas Molar Volume at s.t.p=22.4dm3
SECTION A(15 marks)
This section consist of fifteen multiple-choice
items. Answer ALL the items
Choose the letter corresponding
to the correct response from the five given options, then write it on
the first page of your answer booklet in serial order
(i)
Steam and methane can react and produce hydrogen
according to the following equation:
CH4 + H2O CO + 3H2
The volume of methane needed to
produce 150cm3 of hydrogen at the same conditions will be
A.
25cm3
E. 150cm3
B.
50cm3
C.
75cm3
D.
100cm3
(ii)
The common property for all carbonates and
hydrogen is that they:
A.
Are soluble in cold water
B.
Decompose on heating
C.
Are colourless chemical substances
D.
React with dilute nictric acid
E.
Are not soluble in cold water
(iii)
The equation which represents Haber’s process is
shown below
N2 + H2 NH3 (exothermic reaction)
The rate of formation of ammonia gas can be increased by:
A.
increasing the temperature
B.
decreasing the concentration of nitrogen
C.
decreasing the amount of catalyst
D.
increasing the amount of catalyst
E.
increasing the volume of the container
(iv)
What are
the products of electrolysis of aqueous sodium(I) chloride using platinum
electrode
A.
Sodium and chlorine
B.
Hydrogen and oxygen
C.
Hydrogen and chlorine
D.
Oxygen and chlorine
E.
Platinum and oxygen
(v)
Why is magnesium(ii) chloride a deliquescent
compound
A.
It is easily decomposed by heat
B.
It has a low boiling point
C.
It is readily fusible
D.
It absorbs water from the atmosphere
E.
It easily
gives away water of crystallization
(vi)
The relative atomic mass of aluminium is 27. Its
atomic number is 13. Therefore this element has
A.
13 electrons
B.
14
electrons
C.
14 protons
D.
14 neutrons
E.
27 electrons
(vii)
One of
the following chemical formulae does not represent a carboxylic acid
A.
C2H11COOH
B.
C5H9COOH
C.
C4H9COOH
D.
C3H7COOH
(viii)
How many atoms are there in 8g of lead(ii)
sulphate
A.
1.59
10^23 atoms
B.
1.59
10^19 atoms
C.
1.59 10^21 atoms
D.
1.59 10^22 atoms
E.
1.59
10^20 atoms
(ix)
The following is one of the characteristic
properties of non-metals
A.
They are
electronegative in nature
B.
They behave as reducing agent
C.
They form cations by gaining electrons
D.
They do not react with acids
E.
They form anions by loss of electrons
(x)
Each of the following constitutes one mole
except
A.
Avogadro’s constant of electrons
B.
2g of hydrogen molecules
C.
48g of carbon monoxide atoms
D.
19g of hydroxonium ions
E.
98g of sulphuric acid
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