BIOLOGY AFT
1 :- translocation
2 III
3 organ
4 weaver bird
5  stomata
6  suture
7 grassland
8  apices
9 universal acceptor
10 heterozygote
11 carbon(iv)oxide
12 mitosis
13 body size and shape
14aquatic habitat
15 dwarfism
16 lamarck
17  dorminant
18 predation
19  eukaryotes
20 bacteria
21  nitrogen oxide
22 ability to response to light stimulus
23  for buoyancy
24 entamoeba hystolytica
25 : AB
26 genotype
27hibiscus flower
28 metaphase
29 vestigial organ
30 in abondoned farmland
31 organ
32mutation in the skin cell
33limited resources
34 neck region
35 are vascularized
36 Niger state
37 protection
38neural canal
39savanna
40nitrogen cycle
ECONS
1 :-
= rise in the inflation rate
2authorised capital
3  price decrease
4 provide adequate and efficient storage facilities
5 0.75
6 make growth I population
8Credit and thrift societies
9 restricting import through imprt quotas
10 2 and 20
11 more cotton and less coal
12 transfer payment
13ensure that quota production is strictly followed
14  the rise involved I n an occupation
15 budget deficit
16 f
17  perfectly elastic
18  rate at which export are exchanged for import
19  16
20 consumer soverignty exists
21 1 naira
22  crude oil deposit
23 price and quality
24  18
25 marginal product begins to fall
26acceptability
27 increasing return
28over dependence on imported component
29  0
30bank of industry
31  more of commodity x is consumed than that of of commodity y
32 provides more employment opportunities
33 limited liability company
34  the availability of employment opportunities
35 1
36 INFINITELY ELASTIC
37 PROPERTY TAX
38 POQO
39WEATHER
40 CHANGE IN INCOME AND CHANGE I N CONSUMPTION
+
CHM 3:0PM COMPT
1 :- the element with an electron configuration 1s2 2s2 2p6 3s23p64s2
CORRECT ANSWER =
a noble gas
2 :- ethanoic acid is monobasic because its
CORRECT ANSWER =
has one replaceable hydrogen molecule
3 :- the type of bond in nitrogen molecule is
CORRECT ANSWER =
covalent
4 :- in the hydrogenation of benzene, the catalyst used is
CORRECT ANSWER =
Ni
5 :- the acid found in sour milk is
CORRECT ANSWER =
lactic acid
6 :- transition metals with higher oxidation state will form oxides that are
CORRECT ANSWER =
basic
7 :- the iupac nomenclature of the compound above is
CORRECT ANSWER =
pent-2-yne
8 :- in the diagram above X is
CORRECT ANSWER =
H2
9 :- if 200cm3 of oxygen passes through a porous plug in 100sec.find the time taken for the same volume of hydrogen to pass through the same porous plug
CORRECT ANSWER =
25
10 :- the method used in purifying sugar is
CORRECT ANSWER =
crystallization
11 :- the activation energy of a chemical reaction can be lowered by
CORRECT ANSWER =
the addition of a catalyst
12 :- in the equation above X is
CORRECT ANSWER =
CH3COOCH2CH3
13 :- a solubility curve is a plot of the solubility of solute against
CORRECT ANSWER =
TEMPERATURE
14 :- the method that is not economical for the removal of hardness in water for town supply is
CORRECT ANSWER =
permutit
15 :- in the electrolytic extraction of sodium from fused sodium chloride calcium chloride is usually added to
CORRECT ANSWER =
remove impurities
16 :- grades of petrol having octane number nearer zero will cause a motor car engine to ‘
CORRECT ANSWER =
17 :- nickel is plated on steel to
CORRECT ANSWER =
increase its strength
18 :- the solubility in mol/dm3 of 20.2g of potassium trioxonitrate(V)dissolved in 100g of water at room temperature is
CORRECT ANSWER =
2
19 :- what is the atomic number of an element having 127 neutrons and 82 electrons
CORRECT ANSWER =
82
20 :- 28.80CM3 OF NITROGEN AT 15c is cooled to 0C.its volue ar constant pressure is
CORRECT ANSWER =
27.3
21 :- what physical property of alkane decreases as the number of carbon atoms increases
CORRECT ANSWER =
solubility
22 :- which of the following substances are made by polymeriztion
CORRECT ANSWER =
nylon and artificial rubber
23 :- which of the following compounds is unsaturated
CORRECT ANSWER =
methylbenzene
24 :- a compound contains 31.9% potassium 28.93 chlorine and the remaining oxygen.what is the chemical formula of the compound?\
CORRECT ANSWER =
KClO2
25 :- the use of neon light in aerodome beacons is due to its
CORRECT ANSWER =
COLOUR
26 :- K4Fe(CN)6 is an example of a
CORRECT ANSWER =
complex
27 :- if T change in s is small relative to change in H at room temperature the value of change in G will be
CORRECT ANSWER =
positive
28 :- the solibility of alkanols in water is due to the presence of
CORRECT ANSWER =
hydroxyl group
29 :- when lubricating oil is redistilled,it yields
CORRECT ANSWER =
petroleum jelly
30 :- the iupac nomenclature of K2Cr2O7 SI
CORRECT ANSWER =
potassium heptaoxochromate(VI)
31 :- ALKYNES BURN WITH SMOKY LUMINOUS FLAME DUE TO HIGH
CORRECT ANSWER =
carbon content
32 :- ozone is known for its ability to
CORRECT ANSWER =
attack the respiratory tract of organisms
33 :- which of the following properties is peculiar to graphite?
CORRECT ANSWER =
it is unreactive
34 :- calculate the amount in moles of zinc that will be deposited by passing 10 faradays of elctricity through a solution of zinc salt
CORRECT ANSWER =
5
35 :- the air pollutant that dissolves in water due to produce acid rain is
CORRECT ANSWER =
O3
36 :- the property pecuiliar to pure oxygen is that it
CORRECT ANSWER =
is lighter than air
37 :- the principal property that determines the method of an extraction of a metal from its oe is its
CORRECT ANSWER =
position in the activity series
38 :- when water is added to calcium oxide,it forms
CORRECT ANSWER =
calcium hydroxide
39 :- in the reaction above, the reverse reaction can be favored by
CORRECT ANSWER =
decreases the temperature
40 :- an element with electron configuration 1s2 2s2 2p6 3s2 3p4 belongs to the
CORRECT ANSWER =
p-block
JAMB 09/03/2018
Physics answers 3:00pm
ANSWER = 4.33n
ANSWER = 0.5A
ANSWER = I, II and III
ANSWER = maximum
ANSWER = electroysis
ANSWER = 200C
ANSWER = minimum potention energy
ANSWER = uneven expansion
ANSWER = beaker IV
ANSWER = mass
ANSWER = 82 0C
ANSWER = travel at different speeds
ANSWER = 5.56 x 10 -4 m 3
ANSWER = (q / 4Er)
CORRECT ANSWER = 0.25 {3 J
ANSWER = W0 = 1/Lc
ANSWER = Gm1 m2/4r2
ANSWER= angular magnification
ANSWER= beyond the centre
ANSWER = 1/sinQ
ANSWER = intrinsic semi-conductor
ANSWER = potention energy is maximum at the extremes
ANSWER = f & square root T)
ANSWER = H mmHg
ANSWER = E = hf
ANSWER = thermianic emission
ANSWER = at the boundary between
ANSWER = 6V
ANSWER = in a dynamic equilibrium
ANSWER = prevents heat loss and gain
ANSWER = 1.5N
ANSWER = radiation
ANSWER = 60.00N
ANSWER = a plucked stretched s tring
ANSWER = W1/(W1-W2)
ANSWER = its higher pressure
ANSWER = 0.14m
ANSWER = north – south direction
ANSWER = terminal velocity
BIOLOGY 09/03/2018 3:00PM
_*Biology*_
1 :- the structure can be found in
CORRECT ANSWER =
butterflies
2 :- the appendix of a human and the hipbone of a whale
are examples of
CORRECT ANSWER =
vestigial structure
3 :- protozoa in the intestine of termite is an example of
CORRECT ANSWER =
mutualism
4 :- the part labelled I is
CORRECT ANSWER =
neutral spine
5 :- when testing the presence of starch in a leaf the leaf
is placed in alchol to
CORRECT ANSWER =
remove the chlorophyll from the leaf
6 :- the structure is
CORRECT ANSWER =
rhizome
7 :- one of the advantage of cross fertilization is
CORRECT ANSWER =
it leads to the production of healthier offspring
8 :- the part labelled III is
CORRECT ANSWER =
sperm duct
9 :- the presence of tall trees with buttress root is a
characteristic feature of
CORRECT ANSWER =
tropical rain forest
10 :- which of the following is a characteristic feature of
schizophyta
CORRECT ANSWER =
they have prokaryotic cells with no definite nucleus
11 :- the instrument used for collecting tiny organism that
live in soil watre is
CORRECT ANSWER =
bearmaum funnnel
12 :- the vector for dengue fever is
CORRECT ANSWER =
anopheles mosquito
13 :- biting and chewing mouth parts are found in
CORRECT ANSWER =
grasshoppers
14 :- which of the following is true of ecosystem
CORRECT ANSWER =
producers are more than primary consumers
15 :- which of the following is needed for strong bone and
teeth formation and develpoment
CORRECT ANSWER =
vitamin D
16 :- plants with thick or waxy cut
21 :- the soil with lowest porosity is
CORRECT ANSWER =
clay
22 :- northern guinea savanna is found in
CORRECT ANSWER =
kastina jigawa and yobe
v24 :- which of the following occurs during the exhalation
of air in mammal
CORRECT ANSWER =
intercostal muscles relaxes
25 :- the forelimbs of mammals are examples of
CORRECT ANSWER =
homologous structure
26 :- an example of non-renewable natural resources is
CORRECT ANSWER =
petroleum
27 :- the instrument used for comparing the numbers and
types of animals in differeny soil sample is
CORRECT ANSWER =
tullgreen funnel
28 :- the structure is adapted for
CORRECT ANSWER =
sucking
29 :- the blood vessels that carries deoxygenated blood is
CORRECT ANSWER =
pulmonary artery
30 :- the diagram represents
CORRECT ANSWER =
lumber vertebrae
31 :- an example of organism that belongs to the phylum
protista is
CORRECT ANSWER =
amoeba
32 :- the structure can be found in
CORRECT ANSWER =
ginger
33 :- gaseous exchange in the leaf of a plant occur in the
CORRECT ANSWER =
stomata
34 :- which of the following is an example of an
morphological variation
CORRECT ANSWER =
skin colour
35 :- high faver difficult breathing and cough is a major
symptoms of
CORRECT ANSWER =
pneumomia
36 :- bacteria and blue green algae are examples of
CORRECT ANSWER =
monera
37 :- the function of sympathetic nervous system is it
CORRECT ANSWER =
accelerates heart beat
38 :- the association between alga and fungus in lichen is
n
CORRECT
ECONOMICS – 3PM
1 :-
the effect of an expansionary monetary system above full employment level is a
CORRECT ANSWER = rise in the inflation rate
2 :- the maimumum amount of money a company is allowed to raise b issuing shares to the public is
CORRECT ANSWER = authorised capital
3 :- the value of money will apppreciate if
CORRECT ANSWER = price decrease
4 :- in noigeria ,government can ensure continos supply of agricultural produce in al the seasons by
CORRECT ANSWER = provide adequate and efficient storage facilities
5 :- from the above table calculat the ccoefficient of elasticity of demand
CORRECT ANSWER = 0.75
6 :- the reduction of high fertility rate is a measure of population control designed
CORRECT ANSWER = make growth I population
8 :- capital accumulation for low income earners is btter done through
CORRECT ANSWER = credit and thrift societies
9 :- the government of nigeria can conserve foreign exchange by
CORRECT ANSWER = restricting import through imprt quotas
10 :- the minimum number of persons who are legally allowed to operate in a partnership business is between
CORRECT ANSWER = 2 and 20
11 :- from the above diagram,given the existing resources in the economy,a movement from h o f will lead to the production
CORRECT ANSWER = more cotton and less coal
12 :- gnp is not a good measure of social welfare because they are unrecorded
CORRECT ANSWER = transfer payment
13 :- one of the major goals of opec is to
CORRECT ANSWER = ensure that quota production is strictly followed
14 :- one of the factors considered in the determinant of wages is
CORRECT ANSWER = the rise involved I n an occupation
15 :- if government expenditure exceeds its revenue,this will give rise to a
CORRECT ANSWER = budget deficit
16 :- from the above diagram at which point is the total utility higher
CORRECT ANSWER = f
17 :- the demand curve for a firm operating u nder perfect competition is
CORRECT ANSWER = perfectly elastic
18 :- terms of trade is expressed as the
CORRECT ANSWER = rate at which export are exchanged for import
19 :- from the above what is the mean of ghe distribution
CORRECT ANSWER = 16
20 :- the typical feature of a market economy is that
CORRECT ANSWER = consumer soverignty exists
21 :- given that qd=40-4p and qs=12p=24,determine the equillibrum price
CORRECT ANSWER = 1 naira
22 :- petro chemical industries are located in the river state of nigeria because of
CORRECT ANSWER = crude oil deposit
23 :- in an imperfect market the monopolist can influence
CORRECT ANSWER = price and quality
24 :- from the above table,the medium of the distribution is
CORRECT ANSWER = 18
25 :- in the production process,the law of diminishing returns begins to set in when
CORRECT ANSWER = marginal product begins to fall
26 :- the most unique quality of money is its
CORRECT ANSWER = acceptability
27 :- the u shaped of the long run average cost curve is explained by
CORRECT ANSWER = increasing return
28 :- in nigeria import substitution industralization strategy is faced with the problem of
CORRECT ANSWER = over dependence on imported component
29 :- from the above table,the mode of distribution is
CORRECT ANSWER = 0
30 :- a cosmetic dealer sourcing for cpital to expand his business will approach
CORRECT ANSWER = bank of industry
31 :- freom the above diagram,the movement from point n to point m implies that
CORRECT ANSWER = more of commodity x is consumed than that of of commodity y
32 :- one of yhe advantages of using labour intensive strategy of production is that if
CORRECT ANSWER = provides more employment opportunities
33 :- a business organisation in wich thwere is limitation to the amount of loses a shareholder can sustain in the event of business by law is
CORRECT ANSWER = limited liability company
34 :- rural-urban migraytion is influenced by
CORRECT ANSWER = the availability of employment opportunities
35 :- fram the above diagram the supply curve for agricultural products is illustrated by
CORRECT ANSWER = 1
36 :- the demand curve for a perfectly competitive firm is
CORRECT ANSWER = INFINITELY ELASTIC
37 :- which of yhe following is a direct tax
CORRECT ANSWER = PROPERTY TAX
38 :- froam the above graph,the equillibrum price and quantity is represented at points
CORRECT ANSWER = POQO
39 :- the most important determinant in the supply of agricultural products is
CORRECT ANSWER = WEATHER
40 :- the marginal propensity to consume measures the relationship between
CORRECT ANSWER = CHANGE IN INCOME AND CHANGE I N CONSUMPTION
ENGLISH – 3PM
* tuned
* he had a lot of regret
* Occupies of the slow moving vehicle
* persuasive method
* he is usually skillful at some things
* expression
* anecdote
* ike
* lord lugard
* attention
* occasionally
* colour
* token
* confiDENtial
* segment
* five-man
* put out
* obtain fresh information
* is
* no she doesn ‘ t
* handful
* the law into your won hand
* reliable
* delighted
* refresh
* engrossed
* declined
* hospitable
* every nook and cranny
* serious
* did I see ade in the shop ?
* who teaches the children
* fundaMENTAL
* complimentary
* retaliatory
* plough
BIOLOGY AFT
1 :- movement of manufactured food from the leaves to other part of the plant is
CORRECT ANSWER =
translocation
2 :- the part where fertilization takes place is labelled
CORRECT ANSWER =
III
3 :- the level of organization in onion bulb is
CORRECT ANSWER =
organ
4 :- the possession of short string and conical beak for picking and cracking seed is an adaptive feature of
CORRECT ANSWER =
weaver bird
5 :- gaseous exchange in plants takes place through the
CORRECT ANSWER =
stomata
6 :- the part labelled ii is the
CORRECT ANSWER =
suture
7 :- predominance of grasses with scattered trees are characteristics features of
CORRECT ANSWER =
grassland
8 :- in plants, auxin is produced in the
CORRECT ANSWER =
apices
9 :- the blood group AB is called
CORRECT ANSWER =
universal acceptor
10 :- a diploid individual carrying two different alleles if a gene on its two homologous chrosomes is referred to as
CORRECT ANSWER =
heterozygote
11 :- photosynthesis, respiration and decay are important processes which brings about the recycling of
CORRECT ANSWER =
carbon(iv)oxide
12 :- the illustration represents
CORRECT ANSWER =
mitosis
13 :- which of the following structural feature is involved in regulating heat loss from the body
CORRECT ANSWER =
body size and shape
14 :- dissolved gasses, turbidity and density are ecological that affect
CORRECT ANSWER =
aquatic habitat
15 :- under secretion of pituatry hormones in children leasd to
CORRECT ANSWER =
dwarfism
16 :- the law of the inheritance of acquired traits was postulated by
CORRECT ANSWER =
lamarck
17 :- a trait that is expressed in an offspring when two individuals with constracting characters are crossed is
CORRECT ANSWER =
dorminant
18 :- which of the following is a biotic factor in an ecosystem
CORRECT ANSWER =
predation
19 :- organis that belongs to the kingdom protista are referred to as
CORRECT ANSWER =
eukaryotes
20 :- which of the following is a decomposer in a terrestial habitat?
CORRECT ANSWER =
bacteria
21 :- which of the following air pollutant results in acid rain
CORRECT ANSWER =
nitrogen oxide
22 :- which of the following features describes Euglena as a plant and an animal
CORRECT ANSWER =
ability to response to light stimulus
23 :- the function of swim blader in Tilapia fish is
CORRECT ANSWER =
for buoyancy
24 :- the causative organism of ameobic dysentry is
CORRECT ANSWER =
entamoeba hystolytica
25 :- a person with blood AB can donates to person with blood group
CORRECT ANSWER =
AB
26 :- the genetic constitution of an organism is referred to as its
CORRECT ANSWER =
genotype
27 :- the diagram represents a
CORRECT ANSWER =
hibiscus flower
28 :- the diagram labelled ii is
CORRECT ANSWER =
metaphase
29 :- in evolution the appendix in humans is an evidence from
CORRECT ANSWER =
vestigial organ
30 :- secondary succesion takes place
CORRECT ANSWER =
in abondoned farmland
31 :- the level of organization of a cow heart is
CORRECT ANSWER =
organ
32 :- a sudden loss of black pigment from the skin of an African can be attributed to
CORRECT ANSWER =
mutation in the skin cell
33 :- intra specific competition occur due to
CORRECT ANSWER =
limited resources
34 :- in which part of the body can the diagram be found
CORRECT ANSWER =
neck region
35 :- the characteristics feature of trachepphyta is that they
CORRECT ANSWER =
are vascularized
36 :- Borgu game ireserve is located in
CORRECT ANSWER =
Niger state
37 :- the function of the part labelled I is for
CORRECT ANSWER =
protection
38 :- the part labelled ii is the
CORRECT ANSWER =
neural canal
39 :- an area very low rainfall and high evaporation rate is referred to as
CORRECT ANSWER =
savanna
40 :- ammonification takes place in
CORRECT ANSWER =
nitrogen cycle
ECONOMICS – 3PM
1BCDAAADABC
11DADDCBADCB
21DCBADDABDC
31BDADABBBDC
1 :-
the effect of an expansionary monetary system above full employment level is a
CORRECT ANSWER = rise in the inflation rate
2 :- the maimumum amount of money a company is allowed to raise b issuing shares to the public is
CORRECT ANSWER = authorised capital
3 :- the value of money will apppreciate if
CORRECT ANSWER = price decrease
4 :- in noigeria ,government can ensure continos supply of agricultural produce in al the seasons by
CORRECT ANSWER = provide adequate and efficient storage facilities
5 :- from the above table calculat the ccoefficient of elasticity of demand
CORRECT ANSWER = 0.75
6 :- the reduction of high fertility rate is a measure of population control designed
CORRECT ANSWER = make growth I population
8 :- capital accumulation for low income earners is btter done through
CORRECT ANSWER = credit and thrift societies
9 :- the government of nigeria can conserve foreign exchange by
CORRECT ANSWER = restricting import through imprt quotas
10 :- the minimum number of persons who are legally allowed to operate in a partnership business is between
CORRECT ANSWER = 2 and 20
11 :- from the above diagram,given the existing resources in the economy,a movement from h o f will lead to the production
CORRECT ANSWER = more cotton and less coal
12 :- gnp is not a good measure of social welfare because they are unrecorded
CORRECT ANSWER = transfer payment
13 :- one of the major goals of opec is to
CORRECT ANSWER = ensure that quota production is strictly followed
14 :- one of the factors considered in the determinant of wages is
CORRECT ANSWER = the rise involved I n an occupation
15 :- if government expenditure exceeds its revenue,this will give rise to a
CORRECT ANSWER = budget deficit
16 :- from the above diagram at which point is the total utility higher
CORRECT ANSWER = f
17 :- the demand curve for a firm operating u nder perfect competition is
CORRECT ANSWER = perfectly elastic
18 :- terms of trade is expressed as the
CORRECT ANSWER = rate at which export are exchanged for import
19 :- from the above what is the mean of ghe distribution
CORRECT ANSWER = 16
20 :- the typical feature of a market economy is that
CORRECT ANSWER = consumer soverignty exists
21 :- given that qd=40-4p and qs=12p=24,determine the equillibrum price
CORRECT ANSWER = 1 naira
22 :- petro chemical industries are located in the river state of nigeria because of
CORRECT ANSWER = crude oil deposit
23 :- in an imperfect market the monopolist can influence
CORRECT ANSWER = price and quality
24 :- from the above table,the medium of the distribution is
CORRECT ANSWER = 18
25 :- in the production process,the law of diminishing returns begins to set in when
CORRECT ANSWER = marginal product begins to fall
26 :- the most unique quality of money is its
CORRECT ANSWER = acceptability
27 :- the u shaped of the long run average cost curve is explained by
CORRECT ANSWER = increasing return
28 :- in nigeria import substitution industralization strategy is faced with the problem of
CORRECT ANSWER = over dependence on imported component
29 :- from the above table,the mode of distribution is
CORRECT ANSWER = 0
30 :- a cosmetic dealer sourcing for cpital to expand his business will approach
CORRECT ANSWER = bank of industry
31 :- freom the above diagram,the movement from point n to point m implies that
CORRECT ANSWER = more of commodity x is consumed than that of of commodity y
32 :- one of yhe advantages of using labour intensive strategy of production is that if
CORRECT ANSWER = provides more employment opportunities
33 :- a business organisation in wich thwere is limitation to the amount of loses a shareholder can sustain in the event of business by law is
CORRECT ANSWER = limited liability company
34 :- rural-urban migraytion is influenced by
CORRECT ANSWER = the availability of employment opportunities
35 :- fram the above diagram the supply curve for agricultural products is illustrated by
CORRECT ANSWER = 1
36 :- the demand curve for a perfectly competitive firm is
CORRECT ANSWER = INFINITELY ELASTIC
37 :- which of yhe following is a direct tax
CORRECT ANSWER = PROPERTY TAX
38 :- froam the above graph,the equillibrum price and quantity is represented at points
CORRECT ANSWER = POQO
39 :- the most important determinant in the supply of agricultural products is
CORRECT ANSWER = WEATHER
40 :- the marginal propensity to consume measures the relationship between
CORRECT ANSWER = CHANGE IN INCOME AND CHANGE I N CONSUMPTION
CHM 130PM COMPT
1 :- the element with an electron configuration 1s2 2s2 2p6 3s23p64s2
CORRECT ANSWER =
a noble gas
2 :- ethanoic acid is monobasic because its
CORRECT ANSWER =
has one replaceable hydrogen molecule
3 :- the type of bond in nitrogen molecule is
CORRECT ANSWER =
covalent
4 :- in the hydrogenation of benzene, the catalyst used is
CORRECT ANSWER =
Ni
5 :- the acid found in sour milk is
CORRECT ANSWER =
lactic acid
6 :- transition metals with higher oxidation state will form oxides that are
CORRECT ANSWER =
basic
7 :- the iupac nomenclature of the compound above is
CORRECT ANSWER =
pent-2-yne
8 :- in the diagram above X is
CORRECT ANSWER =
H2
9 :- if 200cm3 of oxygen passes through a porous plug in 100sec.find the time taken for the same volume of hydrogen to pass through the same porous plug
CORRECT ANSWER =
25
10 :- the method used in purifying sugar is
CORRECT ANSWER =
crystallization
11 :- the activation energy of a chemical reaction can be lowered by
CORRECT ANSWER =
the addition of a catalyst
12 :- in the equation above X is
CORRECT ANSWER =
CH3COOCH2CH3
13 :- a solubility curve is a plot of the solubility of solute against
CORRECT ANSWER =
TEMPERATURE
14 :- the method that is not economical for the removal of hardness in water for town supply is
CORRECT ANSWER =
permutit
15 :- in the electrolytic extraction of sodium from fused sodium chloride calcium chloride is usually added to
CORRECT ANSWER =
remove impurities
16 :- grades of petrol having octane number nearer zero will cause a motor car engine to ‘
CORRECT ANSWER =
17 :- nickel is plated on steel to
CORRECT ANSWER =
increase its strength
18 :- the solubility in mol/dm3 of 20.2g of potassium trioxonitrate(V)dissolved in 100g of water at room temperature is
CORRECT ANSWER =
2
19 :- what is the atomic number of an element having 127 neutrons and 82 electrons
CORRECT ANSWER =
82
20 :- 28.80CM3 OF NITROGEN AT 15c is cooled to 0C.its volue ar constant pressure is
CORRECT ANSWER =
27.3
21 :- what physical property of alkane decreases as the number of carbon atoms increases
CORRECT ANSWER =
solubility
22 :- which of the following substances are made by polymeriztion
CORRECT ANSWER =
nylon and artificial rubber
23 :- which of the following compounds is unsaturated
CORRECT ANSWER =
methylbenzene
24 :- a compound contains 31.9% potassium 28.93 chlorine and the remaining oxygen.what is the chemical formula of the compound?\
CORRECT ANSWER =
KClO2
25 :- the use of neon light in aerodome beacons is due to its
CORRECT ANSWER =
COLOUR
26 :- K4Fe(CN)6 is an example of a
CORRECT ANSWER =
complex
27 :- if T change in s is small relative to change in H at room temperature the value of change in G will be
CORRECT ANSWER =
positive
28 :- the solibility of alkanols in water is due to the presence of
CORRECT ANSWER =
hydroxyl group
29 :- when lubricating oil is redistilled,it yields
CORRECT ANSWER =
petroleum jelly
30 :- the iupac nomenclature of K2Cr2O7 SI
CORRECT ANSWER =
potassium heptaoxochromate(VI)
31 :- ALKYNES BURN WITH SMOKY LUMINOUS FLAME DUE TO HIGH
CORRECT ANSWER =
carbon content
32 :- ozone is known for its ability to
CORRECT ANSWER =
attack the respiratory tract of organisms
33 :- which of the following properties is peculiar to graphite?
CORRECT ANSWER =
it is unreactive
34 :- calculate the amount in moles of zinc that will be deposited by passing 10 faradays of elctricity through a solution of zinc salt
CORRECT ANSWER =
5
35 :- the air pollutant that dissolves in water due to produce acid rain is
CORRECT ANSWER =
O3
36 :- the property pecuiliar to pure oxygen is that it
CORRECT ANSWER =
is lighter than air
37 :- the principal property that determines the method of an extraction of a metal from its oe is its
CORRECT ANSWER =
position in the activity series
38 :- when water is added to calcium oxide,it forms
CORRECT ANSWER =
calcium hydroxide
39 :- in the reaction above, the reverse reaction can be favored by
CORRECT ANSWER =
decreases the temperature
40 :- an element with electron configuration 1s2 2s2 2p6 3s2 3p4 belongs to the
CORRECT ANSWER =
p-block
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