JAMB 2022 UTME Mock Revision Questions and Answers

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In preparation for the 2022 Unified Tertiary Matriculation Examination slated to hold between 6th May and 14th May 2022, we have compiled a few mock questions and answers following demands from candidates who did not participate in the optional JAMB UTME Mock exam which held on Saturday, 9th April 2022.

The purpose of this revision is to give candidates an insight of questions to expect during the main exam and motivate them towards stepping up their preparation towards the main exam which begins on May 6th, 2022.

Biology Mock Revision Questions

1. A man-fluid is produced in?
A) Epididymis
B) Seminiferous tubules
C) Vulva
D) Testes

The Correct Answer is Seminiferous tubules

Explanation:
A man fluid is produced by spermatogenesis within the seminiferous tubules. A transverse section of a seminiferous tubule shows that it is packed with cells in various stages of development. Interspersed with these cells, there are large cells that extend from the periphery of the tubule to the lumen. Once the fluid has matured, it is transported through the long seminiferous tubules and stored in the epididymis of the testes until it is ready to leave the male body.

2. What does the wiggling of the lizard head mean?
A) For respiration
B) Territorial defence
C) For excretion
D) Securing its mates

The Correct Answer Territorial defence

Explanation:
Lizards have a variety of defensive strategies. Many lizards defend certain areas against intruders of the same or closely related species by wiggling their heads to establish their territory.

3. Which of the following is evidence of evolution?
A) Behaviour
B) Size
C) Embryology
D) Colour

Explanation:
Embryology is the study of the formation and development of an embryo and fetus. Embryos of organisms that have a closer genetic relationship to one another tend to look similar for a longer period of time since they share a more recent common ancestor. Thus, embryology is frequently used as evidence of the theory of evolution and the radiation of species from a common ancestor.

4. What does it mean when an animal has a white coloured ventral surface and dark coloured dorsal surface.
A) Counter shading
B) Adaptive colouration
C) Warning colouration
D) Behavioural colouration

Explanation:
Countershading is a type of coloration commonly found in animals and means that the animal’s back (dorsal side) is dark while its underside (ventral side) is light. This shading helps an animal blend in with its surroundings.

5. O in the blood group acts as an
A) Universal donor
B) Universal recipient
C) Agglutins
D) Antibodies

Explanation:
An individual with an ‘O’ blood group is considered as ‘universal donor’ because such an individual can donate blood to a person having any other blood group due to the lack of certain antigens on their blood cells.

6. Which of the following is a primary consumer
A) Dog
B) Cow
C) Green grass
D) Vulture

Explanation:
A primary consumer is an organism that feeds on primary producers. Organisms of this type make up the second trophic level and are consumed or predated by secondary consumers, tertiary consumers or apex predators. Primary consumers are usually herbivores that feed on autotrophic plants, which produce their own food through photosynthesis. Ruminants such as cows, sheep, deer, giraffes and goats are herbivore primary consumers, which graze or browse on plant material like grasses, herbs, leaves and twigs

7. Which of the following is a distinct characteristic of mangrove swamp forest
A) Presence of epiphytes
B) It is usually waterlogged
C) It has high rainfall
D) High sunlight.

Explanation:
Mangrove swap forests are characterized by a humid climate, saline environment, and waterlogged soil. A variety of offshore and coastal organisms depends exclusively on mangrove forests for their habitat. It also functions as a site for fertilization for a variety of aquatic fauna resulting in rich biodiversity.

8. Which joint can the wrist and ankle be found
A) Ball and socket joint
B) Hinge joint
C) Gliding and sliding joint
D) Pivot joint

Explanation:
Gliding joint is classified as a functional joint. Gliding joints move with a gliding motion. They are also known as either arthrodial joints or plane joints, and usually occur between flat bones that need to slide past each other in order to allow the desired motion. They are located in the ankles, wrist, and spine.

9. Which of these is a carnivorous plant
A) Pitcher plant
B) Algae
C) Dodder
D) Fungi

Explanation:
Carnivorous plants are plants that derive some or most of their nutrients from trapping and consuming animals or protozoans, typically insects and other arthropods. Carnivorous plants still generate some of their energy from photosynthesis. List of carnivorous plants are; Aldrovanda, Brocchinia, Byblis, Catopsis, Cephalotus, Darlingtonia, Dionaea, Drosera, Sarracenia, the Pitcher Plants.

10. Which of the is not an abiotic factor
A) Temperature
B) Rainfall
C) Forest
D) Light

The Correct Answer Forest

Explanation:
An abiotic factor is a non-living part of an ecosystem that shapes its environment. In a terrestrial ecosystem, examples might include temperature, light, and water. In a marine ecosystem, abiotic factors would include salinity and ocean currents. Abiotic and biotic factors work together to create a unique ecosystem. Five common abiotic factors are atmosphere, chemical elements, sunlight/temperature, wind and rainfall.

Also Read; How To Receive WAEC Questions And Answers Before the Exam Time

Chemistry Mock Revision Questions

1. Effect of water fertilizer and insecticide in water bodies

A) Increases water oxygen level
B) Reduces oxygen level in the water
C) Insecticide and fertilizer dissolve fast

The Correct Answer is Reduces oxygen level in the water

Explanation:
When manure or commercial fertilizers enter surface water, the nutrients they release stimulate microorganism growth. The growth and reproduction of microorganisms reduce the dissolved oxygen content of the water body. Without sufficient dissolved oxygen in surface water, fish and other aquatic species suffocate.

2. Solubility of gas is differently proportional to

A) Volume
B) Temperature
C) Pressure
D) Temperature and pressure

The Correct Answer is Pressure

Explanation:
The solubility is a measure of the concentration of the dissolved gas particles in the liquid and is a function of the gas pressure. As you increase the pressure of a gas, the collision frequency increases and thus the solubility goes up, as you decrease the pressure, the solubility goes down. Therefore, the solubility of a gas in a solvent is directly proportional to the pressure of the gas.

3. The colourless gas produced due to the action of calcium carbonate on cold water is

A) Propyne
B) Ethyne
C) Ethane

The Correct Answer is Ethyne

Explanation:
The colourless gas produced due to the action of calcium carbonate on cold water is Ethyne (C₂H₂).
CaC₂ + 2H₂O —> C₂H₂ + Ca(OH)₂

4. The electrolysis of CuSO₄ using platinum electrode makes the solution become

A) Basic
B) Neutral
C) Acidic

The Correct Answer is Acidic

Explanation:
During electrolysis, copper is deposited at the cathode while oxygen is liberated at anode. The electrolysis of CuSO₄ using platinum electrode makes the solution become acidic.

5. The oxide that will form a mixed hydride is?

A) SO₂
B) NO2
C) NO3
D) SO₃

The Correct Answer is NO2

Explanation:
NO₂ is a mixed anhydrate that forms two acid when dissolved in water.
NO₂ + H₂O – – – -> HNO₃ + HNO₂

6) A 25℅ alcohol contains

A) 25cm³ alcohol in 1dm³ of water
B) 75cm³ alcohol in 100cm³ of water
C) 25cm³ alcohol in 75cm³ of water
D) 25cm³ alcohol in 100cm³ of water

The Correct Answer is 25cm³ alcohol in 100cm³ of water

Explanation:
(25cm³/100cm³) x 100
= 25%

7) 3C₂H₂(g) – – -Q – – > C₆H₆(I)
In the above reaction Q is

A) organomagnesium catalyst
B) organovanadium catalyst
C) organolithium catalyst
D) organonickel catalyst

The Correct Answer is Organonickel catalyst

Explanation:
In the above reaction, Q is an organonickel catalyst.
Organonickel chemistry is a branch of organometallic chemistry that deals with organic compounds featuring nickel-carbon bonds. They are used as a catalyst, as a building block in organic chemistry and in chemical vapor deposition. Organonickel compounds are also short-lived intermediates in organic reactions.

8) How many grams of aluminium will be deposited by 0.1F? (Molar mass of Al = 27gmol-¹)

A) 0.3g
B) 0.9g
C) 9.0g
D) 2.7g

The Correct Answer is 0.9g

Explanation:
(m/mm) = It/CF
Where C = charge or the number of electrons
F = Faraday constant
m = mass
mm = molar mass or atomic mass
I = current
t = time
Recall;
Q = It
Q = 0.1F
1F = 96500C
0.1f = x
x = 9650C
Q = 9650C
A³⁺ –> +3
C = +3
F = 96500
(m/27) = Q/CF
m/27 = 9600/(3×96500)
30m = 27
m = 27/30
m = 0.9g

9. Water used in the preparation of drugs should be ___

A) chlorinated
B) distilled
C) domestic
D) natural

The Correct Answer is Distilled

Explanation:
Distilled water is ideal for when purity is important. Common uses include; Medical tools and procedures. Hospitals clean equipment with it to help avoid contamination and infections.

10. When alkanoic acid is dehydrated, it gives?

A) Alkanal
B) Alkanoate
C) Alkanone

The Correct Answer is Alkanoate

Explanation:
Alkanoate is any salt or ester formed from the reaction of an alkanoic acid and alkanol.

11. Alkanals and alkanones are reacted with LiAlH₄ to give
The Correct Answer is Alkanols

12. The salt used to treat stomach disorder is known as____
The Correct Answer is Espom salt

13. The spreading of bromine in a jar on standing is known as __
The Correct Answer is Diffusion

14. Ordinary steel consists of ___
The Correct Answer is Iron(Fe) and Carbon(C)

15. Air can be liquified under __
The Correct Answer is Fractional distillation

Explanation:
Under high pressure (compression) and low temperature (cooling) – – – > Fractional distillation of air.

16. What is the mass of 5.4dm³ of nitrogen [Given V= 22.4dm³]
The Correct Answer is 6.75g

Explanation:
Mass of N₂ (M) =?
Volume (v) = 5.4dm³
Molar volume (mv) = 22.4dm³
Molar mass (mm) = 14 x 2
= 28g/mol
n = M/mm ; n = V/mv
M/mm = v/mv
M = (v x mm)/(mv)
M = (5.4 x 28)/22.4
M = 6.75g

17. When a solution of copper sulphate is electrolysed using platinum electrodes, the resulting solution is ___
The Correct Answer is Acidic

18. Name the organic compound that has the structure of RCOR’
The Correct Answer is Alkanones

19. What is the IUPAC name of CH₃CH=C(CH₃)₂
The Correct Answer is 2methyl But-2-ene

20. The structure of amino acid is ___
The Correct Answer is CH(NH₂) – COOH

21. A special characteristic of catalyst is ___

The Correct Answer is Remains unchanged

22. The colour of iron (II) and Iron (III) are __
The Correct Answer is Green and Brown

23. A 27.4cm³ of HCL reacted completely with 25cm³ and 0.1mol/dm³ of NaOH. Find the concentration of the acid __
The Correct Answer is 0.0912mol/dm³

Explanation:
HCL + NaOH -> NaCl + H₂O
nA = 1
nB = 1
v = 27.4cm³
CB =?
VB = 25cm³
CB = 0.1mol/dm³
CAVA /CBVB = nA/nB
CA = (CBVBnA)/(VAnB)
CA = (0.1x25x1)/(27.4×1)
CA = 0.0912mol/dm³

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Physics Mock Revision Questions

1. If the velocity of a body is v=at, find the dimension of v
The Correct Answer is LT-1

Explanation:
V = at
Dimension of V =?
Acceleration a = V/t
V = (v/t) x t
Recall;
V = distance/time
V = metre/second
V = LT-¹
V = (LT-¹/T) x T
V = LT-¹

2. When a body of mass 50kg is just about to move, the force acting on the body is 150N. Find the coefficient of static friction g=10ms-²
The Correct Answer is 0.3

Explanation:
W = mg
W = 50 x 10
W = 500N
Fr = frictional force
Fr = Umg
U = Fr/mg
U = Fr/W
U = 150/500
U = 0.3

3. If the length of a string of initial frequency F is reduced by 4, the new frequency is
The Correct Answer is 4f₁

Explanation:
f ∝ 1/L
f₁L₁ = f₂L₂
L₂ = L₁/4
f₁L₁ = (f₂ x L₁)/4
f₁ = (f₂ x L₁)/(4 x L₁)
f₁ = f₂/4
f₂ = 4f₁
Therefore, the new frequency is increased four times the initial frequency.

4. The separation between two bodies is reduced by half, the force of gravity between them is
The Correct Answer is Quadrupled

Explanation:
F = force of gravity
F = (GM₁M₂)/r²
F ∝1/r²
r = distance or separation between the two bodies
F ∝ 1/(r/2)²
F ∝ 1/(r²/4)
F is increased by four which means the force of gravity will be quadrupled.

5. An ice block of mass 0.01kg is heated with a heater of power P , and melts at 0 degrees celsius in one minute, find the power of the heater[latent heat of fusion of ice is=0.000033J/KG]
The Correct Answer is 0.5 x 10-⁸watts

Explanation:
M(ice) = 0.01kg
L(ice) = 0.00003J/kg
t = 1minute
t = 60seconds
P = ML/t
P = (0.01kg x 0.00003J/kg)/60
P = 0.000000005watts
P = 0.5 x 10-⁸watts

6. Find the mass of CU deposited by 0.25A in 60minutes [copper =3.3×10-⁴]
The Correct Answer is 0.297g

Explanation:
M = ZIt
M = mass =?
I = current = 0.25A
t = time = 60 minutes
t = 60 x 60
t = 3600seconds
Z = electrochemical equivalent
Z = 3.3 x 10-⁴
M = 3.3 x 10-⁴ x 0.25 x 3600
M = 0.297g

7. An object is placed 5cm in front of a lens and forms a virtual image at 25cm. Find the power of the lens in dioptres.
The Correct Answer is 16 dioptres.

Explanation:
1/f = 1/u + 1/v
u = 5cm
v = 25cm
Power of lens = 1/f(in metres)
1/f = 1/5 + 1/25
Inage is virtual s. v is negative
1/f = 1/5 – 1/25
f = (5 – 1)/25
1/f = 4/25
f = 25/4cm
f = 25/4×100
f = 1/16
P = 1/f
P = 1/(1/16)
P = 16 dioptres.

8. The force acting on a current-carrying conductor is 60N when the magnetic field intensity is halved and the velocity is tripled. Find the value of the new force.
The Correct Answer is 90N

Explanation:
F₁ = 60N
F₁ = qVBsinθ
60 = qVBsinθ
F₂ = New force =?
B is magnetic fueld intensity
If B is halved = B/2
Velocity is tripled = 3v
F₁= q x (B/2) x 3/2
F₁ = qVB x 3/2
F₂ = 3/2F
F₂ = 3/2 x 60
F₂ = 90N

9. If the half-life of material is 3 days and its initial mass is 15g, find its mass after 18 days
The Correct Answer is 0.1172grams

Explanation:
Given;
n = number of half lives
T = period of decay
t(1/2) = half life
t(1/2) = 3days
m = 15g
x = ?
T = 18 days
x = m/2ⁿ
n = T/t(1/2)
n = 18/3
n = 6
x = 15/2⁶
x = 15/128
x = 0.1172grams

10. The power supplied by the machine is P, find the minimum time it will take it to attain a velocity V.
The Correct Answer is Mv²/2P

Explanation:
P = Work/time
Work = Energy
Work = Kinetic Energy
P = (½Mv²)/t
t = Mv²/2P

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1. WAEC Questions And Answers

2. How To Answer JAMB Questions

3. How To Deal With Exam Tension

4. How To Reprint Your Exam Slip

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