Jamb 2018 Day One 9th March Full Answers Now Available

jamb

CHEMISTRY – 3PM
1ABDCDBACCA
11DCCACBCBDA
21CBADDCABBA
31CBDAACBCDA
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

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

ENGLISH LANGUAGE

1 :- the phrase, the ingeneous device, as used in the passage means
CORRECT ANSWER = father-nile
6 :- we can control our weight and reduce ????. Of sugar, sodium and saturated fat
CORRECT ANSWER = level

7 :- this study is published in the ?????. Of human nutrition and diabetics.
CORRECT ANSWER = journal

8 :- though most people meet the body’s fluid requirements by drinking water and ?

9 :- to further ????.. How increasing water intake can affect the parameters of health
CORRECT ANSWER = prove

10 :- the researchers use a nationally representative ?????. Of more than 18,300 adults in the USA.
CORRECT ANSWER = sample

11 :- the researchers asked ???.. To recall the foods and drinks they consumed over a couple of days
CORRECT ANSWER = participants

12 :- they then calculated the ??? of water
CORRECT ANSWER = amount

13 :- each respondent ??????????..
CORRECT ANSWER = consumed

14 :- as a percentage of daily dietary water intake from both food and drinks ????..
CORRECT ANSWER = although

15 :- they did not include their water content in the calculation of total ??????? consumption
CORRECT ANSWER = water

16 :- one of the first things that attracted miriam to tayo was her
CORRECT ANSWER = intelligence

17 :- the sauce began to cloy after a few hours
CORRECT ANSWER = it began to make people sick

18 :- tayo was surprised to see what his daughter brought from the church was only
CORRECT ANSWER = an autograph

19 :- tayo told vanessa that his name was a symbol of
CORRECT ANSWER = joy

20 :- all the members were asked to gather n front of the hall
CORRECT ANSWER = unite

21 :- the new manager is head and shoulder above the former manager
CORRECT ANSWER = he is better

22 :- while tayo was going to visit his father’s relatives, he seemed oblivious to his surroundings because he was
CORRECT ANSWER = thinking about modupe

23 :- vanessa had confessed that she had connections to africa since

CORRECT ANSWER = her father worked in the collonial service

24 :- stop fiddling with your phone’, her father screamed
CORRECT ANSWER = he wants her to do something more important

25 :- obi made poerfunctory effort in the race
CORRECT ANSWER = cursory

26 :- the chairmans report was absolute
CORRECT ANSWER = complete

27 :- the coarse material he wore mad

CORRECT ANSWER = her father worked in the collonial service

e him uncomfortable
CORRECT ANSWER = rough

28 :- the children have been under ado;s feet all day
CORRECT ANSWER = ado stops them from doing what they want

29 :- because ike lived longer than most nigerians at oxford, he could
CORRECT ANSWER = act like the english at oxford

30 :- tayo’s wife was against buying books from challenge christian bookshop because
CORRECT ANSWER = the price were i

nflated

31 :- chioma mooches around the park daily
CORRECT ANSWER = she goes there without reason

32 :- the major bone of contetion between tayo and miriam was
CORRECT ANSWER = negligence

33 :- cool down?.noise never hurt anyone. From the excerpt above, who was ike referring to?
CORRECT ANSWER = tayo

34 :- mr ike finally released the wretch

ed slave
CORRECT ANSWER = sad

35 :- it was observed by vanessa that africans had the habit of saying sorry even if they
CORRECT ANSWER = were innocent

36 :- tade was usually susceptible to flattery
CORRECT ANSWER = responsive

37 :- ramat toppled over the bridge into the water
CORRECT ANSWER = staggered

38 :- the town hall was spruced up for

the occasion
CORRECT ANSWER = upgraded

38 :- the town hall was spruced up for the occasion
CORRECT ANSWER = upgraded

39 :- he responded with a resonant laugh
CORRECT ANSWER = vibrant

40 :- she had worried about his constancy before they were married
CORRECT ANSWER = loyalty

41 :- I heard you???. Much better since you ?. That medication

CORRECT ANSWER = have been sleeping/started taking

42 :- when joke finally appeared on stage and saved the day, the audience roared?

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

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