2023 JAMB EXPO (25th April - 2nd May) | All Questions & Answers
Get 2023 JAMB Expo / Runz / Answer / Chokes for Agricultural Science, Biology, Chemistry, CRS, Commerce, Economics, Geography, Government, Igbo, Yoruba, Hausa, Literature, Mathematics, Physics, English Language for 25th April, 26th April, 27th April, 28th April, 29th April, 1st May & 2nd May, 2023.

Latest Update: This is to inform all 2023 JAMB UTME candidates that we will be publishing most of the verified JAMB questions and answers sent in to us by candidates who will be sitting for their examination from 25th April, 26th April, 27th April, 28th April, 29th April, 1st May & 2nd May, 2023 (Questions will be updated after each exams), Candidates who are yet to write can use them to get prepared ahead of their own exams.

NB: We will be updating some of the questions and answers from each examination based on the experiences and what candidates sent in to us. Kindly know that most of the questions or answers published below might not be the exact questions or solution, you are advised to study hard and just use this as a guide. Continue reading below and bookmark this page and continue checking back later:


2023 JAMB EXPO (25th April - 2nd May) | All Questions & Answers


DISCLAIMER: KINDLY STUDY AND NOT RELY ON THE DOWNLOADED RESOURCES!!!

BIOLOGY QUESTIONS

1. The kind of joint found in the scapula of a mammals is......

A.sliding and gliding
B. Hinge joint
C. Pivot joints
D. Ball and socket.

2. The kind of joint found in the pelvic which runs the femur of a mammals is......

A.sliding and gliding
B. Hinge joint
C. Pivot joints
D. Ball and socket.

3. The kind of joint found in the knee and elbow of a mammals is......

A.sliding and gliding
B. Hinge joint
C. Pivot joints
D. Ball and socket.

4. The kind of joint found in between the atlas and axis vertebrae of a mammals is......

A.sliding and gliding
B. Hinge joint
C. Pivot joints
D. Ball and socket.

5. Structure joint is also found as no option...........
The structure that allows the free movement of the bones meeting at the joint is called...................

A. Synovial fluid
B. Synovial membrane
C. Synovial ligament.
D. Synovial Cavity.

6. Which of this is not a excretory product In man.
A.urine B.sweat C.faeces D.carbondioxide

7. A grasshopper respires by means of what?

8. In life Organisation, Hydra is?
A organ
B. Tissue
C. System
D. cell

9. a criminal can be traced through which of the following
A.. blood group B. fingerprint C. genotype

10. In adult Red blood cells are produced from the
A-spleen&liver
B-bone marrow
C-thymus

11. The mode of nutrition In which digestion is extra cellular is
A)saprophytic
B)parasitic
C)holophytic
D)holozoic

PHYSICS QUESTIONS

1. Which of the following is a poor conductor of electricity
A)Soapy water
B)cold water
C)distilled water
D)None


2. If a reverse-biased voltage is applied across a p-n junction, the depletion layer width is
A. Increased
B. Decreased
C. Constant
D. Halved

3. A semi conductor in which the holes are excess is .
a. P-type
b. N- type
C. P-n type
D. Ohmic type

4. Which of the following is a poor conductor of electricity
A)Soapy water
B)cold water
C)distilled water
D)None

5. In a series resonant circuit , the current flowing in the circuit is
A. Max
B. Min
C. Zero
D. Unaffected.

LIFE CHANGER QUESTIONS

1) Unmi family was
a}poor
b} affluent
c}Rich
d} Average

2) Umi husband is a.........
a} business man
b} teacher
c} banker
d} civil servant

3) Salma was concious of her..............
a} inconsiderate behavior
b} dressing
c}past memories

4} Umi shared Salma's EMAL story to givers her children _______
a} retribution
b} warning
c} moral development
d} educational background.

5) Omars father occupation was .......
A business man
B police man
C banker
D teacher

6) how did Umi feel during her registration .......

7. Bint's parents encouraged her to take French because of all but one of these reasons------

A)They believe that French professionals are high in damand

B)They believe that language acquisition at an early age is relatively easy

C)They believe that learning a language at early age takes minimal effort

D)They believe that French was second to English in ranking of international languages

8. Salma was concious of her..............
a} inconsiderate behavior
b} dressing
c}past memories

CHEMISTRY QUESTIONS

1..An isotope has an atomic number of 15 and mass number of 31..The proton it contain is
A..16
B..15
C..31
D..46

2. Calculate the volume in cm³ of oxygen evolved at s.t.p. when a current of 5A is passed through acidified water for 1..(Molar volume of gas at STP =22.4DM³
A..0.056
B..0.224
C..224.000
D..56.0000

3. The sulphide used in coating electric fluorescent tubes is
A)iron(II) sulphide
B)sphalerite
C)zinc sulphide
D) sulphide mineral

4. Hydrogenation of Benzene to Cyclohexane
A. Cracking
B. Polymerisation
C. Reforming
D. Aromatization

5. If the half life of a particle is 4.5 how long will it decay 3/4 of its mass.

6. BaS04 is
A)soluble salt
B)insoluble salt
C)neutral salt
D)basic sat

7. The gas that can best be collected by downward displacement of air is
A. Ammonia
B. Carbon (iV) oxide
C. Chlorine
D. Sulphur (iV) oxide


8. The pollutant that contributes to the depletion of the ozone layer is

a)CFCs
B)CFs
C)CFS
D)CFC

9. What changes sodium pellets to liquid
a. Oxygen
b. Water vapour
c. Carbon(Iv) oxide
d. Nitrogen

10. The compound used as "antifreeze" in car radiators in cold regions of the world is
A. Ethanol
B. Ethylene glycol
C. Ethanal
D. Propane-1, 2-diol

11. The PH of 0.001dm³ of HCl is ???

12. What are the laws that form the general gas equation
A. Boyle and Charles
B. Boyle's, Charles and Graham
C. Boyle's only
D. Charles and Graham

13. Chlorine, bromine, and iodine resembles each other in that all
A. Dissolves in alkalis
B. Displace each other from solution of their salts
C. React violently with hydrogen with heating

14. What changes sodium pellets to liquid
a. Oxygen
b. Water vapour
c. Carbon(Iv) oxide
d. Nitrogen

15. The method suitable for separating suspended particles in liquid is....?
A. Decantation
B. Distillation
C. Centrifugation

16. A hydrocarbon X has molar mass 26 carban Atoms 96% what is it's molecular formula
A. C2H2
B. C2H6
C. CH4
D. C3H8

17. Silica gel when exposed to air turns liquid what kind of substance is it
A) delinquency
B)hygroscopic
C) efflorescence

18. In an equilibrium reaction, which of the following conditions indicate the maximum yield of the product will be obtained
A. Equilibrium constant is very large
B. ∆H – T∆S
C. ∆H > T∆S
D. Equilibrium constant is less than zero

19. Under high pressure,real gases do not obey gas laws because their molecules?
a.Have become more energetic
b.Have become less energetic
c.Have become smaller in size
d.Decompose into atoms

20. Which of the following has the highest-octane number?
A. Straight chain aliphatic compound
B. Branched chain aliphatic compound
C. Aromatic compound
D. Cyclic aliphatic compound

JAMB CBT EXAM DAY 2 ANSWERS

1. The unit of energy produced by food in the human body is called
(a) Watt
(b) DNA
(c) Calorie (Correct)
(d) Ampere

2. Proteins are made of
(a) Sugar
(b) Fatty acid
(c) Nucleic acid
(d) Amino acid (Correct)

3. Amount of water in mammalian blood is
(a) 99%
(b) 98%
(c) 90% (Correct)
(d) 92%

4. Which of the following Vitamin helps in clotting of blood?
(a) Vitamin B
(b) Vitamin A
(c) Vitamin D
(d) Vitamin K (Correct)

5. Which of the following vitamins are fat soluble?
(a) Vitamins A,B, C, D
(b) Vitamins A, D, E, K (Correct)
(c) Vitamins A, B, C, D
(d) None of these
*

6. Which of the following is not a source of Vitamin C?
(a) Potato
(b) Tomato
(c) Guava
(d) Milk (Correct)

7. Ozone is present in which of the following layers of atmosphere
(a) Troposphere and Thermosphere
(b) Troposphere and Stratosphere (Correct)
(c) Mesosphere
(d) Thermosphere

8. The study of relationship between organism and their environment is called
(a) Ecology (Correct)
(b) Oncology
(c) Lithology
(d) None of these

9. Most of the ozone in the atmosphere is concentrated in the
(a) Mesosphere
(b) Troposphere
(c) Stratosphere (Correct)
(d) Ionosphere

10. The most abundant element in Earth’s crust is
(a) Silicon
(b) Oxygen (Correct)
(c) Aluminums
(d) None of these

11. Which of the following vitamins is Water soluble?
(a) Vitamins B, E
(b) Vitamins A, B
(c) Vitamins C, D
(d) Vitamins B, C (Correct)

12. In railway tracks, a small gap is left between the rails
(a) To allow for the expansion during heat (Correct)
(b) To save the cost of metal
(c) To permit the shrinkage of metal

13. Friction can be reduced by changing over from
(a) Sliding to rolling (Correct)
(b) Rolling to sliding
(c) Potential energy to kinetic energy

14. A solid ball of metal has a spherical cavity inside it. If the ball is heated, the volume of the cavity will
(a) Increase
(b) Decrease (Correct)
(c) Remain unaffected

15. As we climb up the mountain, the atmospheric pressure will
(a) Decrease (Correct)
(b) Increase
(c) Remain the same
(d) None of these

16. Which of the following vitamin is produced in the body with the help of sunlight?
(a) Vitamin D (Correct)
(b) Vitamin E
(c) Vitamin K
(d) None of these

17. Vitamin ‘D’ prevents
(a) Tooth diseases
(b) Bone diseases (Correct)
(c) Eye diseases
(d) Skin diseases

18. Heart attack is caused due to
(a) Blood sugar
(b) Cholesterol (Correct)
(c) Blood protein
(d) Blood urea

19. Which of the following diseases has posed a serious threat the world over?
(a) Tumour
(b) Paralytic stroke
(c) AIDS (Correct)
(d) Tuberculosis

20. Which of the following disease is not water-borne?
(a) Cholera
(b) Influenza (Correct)
(c) Amoebiasis
(d) Typhoid

21. Typhoid and cholera are typical examples of
(a) Infection diseases
(b) Air-borne diseases
(c) Water-borne diseases (Correct)
(d) None of these

22. Who invented the hydrogen bomb?
(a) J. Robert Oppenheimer
(b) Albert Einstein
(c) Samuel Cohen (Correct)
(d) Edward Teller

23. Logarithm tables were invented by
(a) John Napier (Correct)
(b) John Doe
(c) John Harrison
(d) John Douglas

24. Who invented optical fibre?
(a) Samuel Cohen
(b) Narinder Kapany (Correct)
(c) Percy L. Spencer
(d) T. H. Maimah

25. Brass is an alloy of
(a) Copper and Tin
(b) Copper and Zinc (Correct)
(c) Copper and Nickel
(d) None of these

26. A transformer is used to
(a) Increase DC voltage
(b) Increase or decrease AC voltage (Correct)
(c) Decrease DC voltage
(d) None of these

27. Which of the following gases is used for purification of water?
(a) Oxygen
(b) Ammonia
(c) Chlorine (Correct)
(d) Neon

28. Pure gold is
(a) 17 carats
(b) 20 carats
(c) 24 carats (Correct)
(d) 36 carats

29. Which of the following is a gas?
(a) Thorium
(b) Plutonium
(c) Mercury
(d) Chlorine (Correct)

30. Which one of the following mixture of gases is required in gas welding?
(a) Oxygen and ethylene
(b) Oxygen and hydrogen
(c) Acetylene and oxygen (Correct)
(d) All of above

31. One horse power is equal to
(a) 736 watts
(b) 746 watts (Correct)
(c) 748 watts
(d) 796 watts

32. Heat from the sun is received by the earth through
(a) Conduction
(b) Convection
(c) Radiation (Correct)
(d) Condensation
33. As the temperature of ice rises, the ice melts and its density
(a) Decreases
(b) Constant
(c) Increases (Correct)
(d) All of above

34. A branch of science dealing with the study of fossils is called
(a) Parasitology
(b) Palaeontology (Correct)
(c) Theology
(d) Radiology

35. The theory of inheritance of acquired characters was propounded by
(a) Charles Darwin
(b) Gregor Mendal (Correct)
(c) J.B. Lamarck
(d) Weismann

36. Which of the following was discovered by Ronald Ross?
(a) Cholera germs
(b) Malaria parasite (Correct)
(c) Jaundice germs
(d) None of these

37. Radioactivity was discovered by
(a) Henry Bequerel (Correct)
(b) Marie Curie
(c) Newton
(d) Einstein

38. The science of heavenly bodies is called
(a) Astrophysics
(b) Astronomy (Correct)
(c) Astroneuties
(d) Cosmology

39. Which of the following has no blood, but respires?
(a) Cockroach
(b) Earthworm
(c) Fish
(d) Hydra (Correct)

40. Which of the following is the basic characteristic of a living organism?
(a) Ability to move
(b) Ability to reproduce (Correct)
(c) Ability to eat
(d) Ability to breath

41. In which organ of the human body are the lymphocyte cells formed?
(a) Liver
(b) Long bone
(c) Pancreas
(d) Spleen (Correct)

42. What is stored in the gall bladder?
(a) Enzymes
(b) Bile (Correct)
(c) Urea
(d) Insulin

43. The study of structures and formation of rocks and minerals on other plants is called
(a) Cosmology
(b) Virology
(c) Astrogeology (Correct)
(d) Histology

44. Which vitamin canot store in human body?
(a) Vitamin A
(b) Vitamin C (Correct)
(c) Vitamin D
(d) Vitamin E

45. Deficiency of vitamin C causes
(a) Night-blindness
(b) Beri-Beri
(c) Scurvy (Correct)
(d) None of these

46. Which Vitamin is known as Ascorbic Acid?
(a) Vitamin A
(b) Vitamin B
(c) Vitamin K
(d) Vitamin C (Correct)

47. Deficiency of Vitamin C causes
(a) Tooth diseases (Correct)
(b) Bone diseases
(c) Eye diseases
(d) Skin diseases

48. All forms of energy that we use are ultimately transformed into
(a) Electrical energy
(b) Heat energy (Correct)
(c) Light energy
(d) Chemical energy

49. Water helps in the metabolism process in the presence of
(a) Amino acids
(b) Ribonucleic Acid
(c) Proteins
(d) Enzymes (Correct)

50. The proteins are made in the cells under the instructions of
(a) Genes (Correct)
(b) DNA
(c) RNA
(d) Ribosomes

51. Which is an essential constituent of diet?
(a) Starch (Correct)
(b) Glucose
(c) Amino acid
(d) None of these

52. Deficiency of iron in human diet causes:
(a) Goitre
(b) Scurvy
(c) Anaemia (Correct)
(d) Rickets

53. Which of the following acids secreted internally, helps in digestion?
(a) Formalin
(b) Citric
(c) Hydrochloric (Correct)
(d) Acetic

54. After drinking contaminated water, you would be most apt to develop symptoms of
(a) Malaria
(b)Typhoid fever (Correct)
(c) Yellow fever
(d) Formalin

55. Recording of brain waves from outer surface of head is called
(a) E.C.G.
(b) MRI
(c) C.T. scans
(d) E.E.G (Correct)

56. Which one of the following is an example of hereditary disease?
(a) AIDS
(b) Hemophilia (Correct)
(c) Syphilis
(d) Formalin

57. Hair, finger nails, hoofs etc. are all made of?
(a) Fat
(b) Vitamins
(c) Proteins (Correct)
(d) Iron

58. What type of infection is tuberculosis?
(a) Viral
(b) Bacterial (Correct)
(c) Fungal
(d) Parasitic

59. AIDS virus destroys the ________ system of the human body.
(a) Circulation
(b) Immune (Correct)
(c) Digestion
(d) Brain

60. Which sets of colour combinations is added in colour vision in TV?
(a) Red, green and blue (Correct)
(b) Orange, black and violet
(c) White, red and yellow

61. Water cannot be used to extinguish fire caused by an electric current because
(a) It may cause another short circuit (Correct)
(b) It may cause hydrolysis
(c) It may cause electrocution

62. Cloudy nights are warmer because
(a) Clouds prevent radiation of heat from ground to air (Correct)
(b) Of low atmospheric pressure
(c) Of the compact density of air

63. Food is cooked quickly in a pressure cooker because
(a) Boiling point of water is decreased
(b) Boiling point of water is increased (Correct)
(c) It absorbs heat quickly

64. The AIDS virus is called.
(a) A.I.B
(b) B.I.H
(c) H.I.V (Correct)
(d) V.I.H

65. Cataract is a disease which is due to
(a) A defect in the optic nerve
(b) Inflammation in the eye
(c) Opacity of cornea (Correct)
(d) Opacity of lens

66. In which form glucose is stored in the liver?
(a) Lactic acid
(b) Lactose
(c) Ribose
(d) Glycogen (Correct)

67. Mercury thermometer was invented by
(a) Galileo (Correct)
(b) Fahrenheit
(c) Newton
(d) Priestly

68. John Walker invented
(a) Safety match (Correct)
(b) Safety razor
(c) Safety pin
(d) Safety valve

69. Gun powder was invented by
(a) Roger Bacon (Correct)
(b) Alfred Nobel
(c) Albert Einstein
(d) Alexander Fleming

70. Who among the following does not have a chemical element named after him?
(a) Albert Einstein
(b) Enrico Fermi
(c) Isaac Newton (Correct)
(d) Mendelen

71. In which country alcohol is used as fuel for vehicles
(a) U.S.A
(b) Brazil (Correct)
(c) Japan
(d) Germany

72. The device used for the measurement of current, voltage and resistance is
(a) AVO meter (Correct)
(b) Galvanometer
(c) Ammeter
(d) Ohmmeter

73. Silicon is a
(a) Semi-conductor (Correct)
(b) Insulator
(c) Superconductor
(d) Conductor

74. What is Penicillin?
(a) Vitamin
(b) Hormone
(c) Antibiotic (Correct)
(d) Analgesic

75. Liver produces?
(a) Hormones
(b) Bile (Correct)
(c) Enzymes
(d) him

76. Lack of ________ causes diabetes
(a) Sugar
(b) Insulin (Correct)
(c) Calcium
(d) Vitamins

77. Triple antigen vaccine is given to children to protect them against
(a) Polio
(b) Whooping cough (Correct)
(c) Tuberculosis
(d) Contagious diseases

78. Storage batteries commonly contain
(a) Copper
(b) Mercury
(c) Lead (Correct)
(d) Iron

79. Water is a universal solvent for what reactions.
(a) Physical
(b) Chemical
(c) Nuclear
(d) Biochemical (Correct)

80. The volume percentage of nitrogen in air is
(a) 60%
(b) 67%
(c) 74%
(d) 78% (Correct)

81. Air contains volume of carbon dioxide approximately;
(a) 3 %
(b) 33%
(c) 0.3 %
(d) 0.03% (Correct)

82. The gases which are used by divers as an artificial atmosphere are helium and;
(a) Nitrogen
(b) Oxygen (Correct)
(c) Neon
(d) None of these

83. Which of the following is involved in blood clotting?
(a) Sodium
(b) Magnesium
(c) Calcium (Correct)
(d) Potassium

84. Which of the following vitamins is essential for bone and teeth formation?
(a) Vitamin A
(b) Vitamin B
(c) Vitamin C
(d) Vitamin D (Correct)

85. The richest source of vitamin D is:
(a) Cod liver oil (Correct)
(b) Spinach
(c) Milk
(d) Cheese

86. Which of the following vitamins is synthesized in the body by intestinal bacteria?
(a) Vitamin B1
(b) Vitamin B4
(c) Vitamin D
(d) Vitamin K (Correct)

87. The vitamin capable of formation of blood is
(a) Vitamin A
(b) Vitamin B (Correct)
(c) Vitamin C
(d) Vitamin D

88. Entomology is the science which deals with
(a) Plants
(b) Animals
(c) Insects (Correct)
(d) Chemicals

89. Which of the following is a mammal?
(a) Ostrich
(b) Crocodile
(c) Platypus (Correct)
(d) Duck

90. Respiratory centre is situated in:
(a) Cerebrum
(b) Cerebellum
(c) Medulla oblongata (Correct)
(d) Diencephalon

91. The normal temperature of the human body is:
(a) 90F
(b) 98F
(c) 98.6F (Correct)
(d) 96.4F

92. The total number of bones in human skull
(a) 28
(b) 42
(c) 22 (Correct)
(d) 37

93. In brain, the site for intelligence, memory and emotion is present in
(a) Cerebrum (Correct)
(b) Cerebellum
(c) Medulta
(d) Hypothalamus

94. The longest and the strongest bone in the human body is
(a) Tibia
(b) Pelvis
(c) Femur (Correct)
(d) Jaw

95. By taking pulse rate of the human body a doctor determines
(a) Condition of the liver
(b) Amount of blood in the body
(c) Checks the lungs
*(d) Heart beat (Correct)

96. Hepatitis B is a disease of
(a) Lungs
(b) Heart
(c) Liver (Correct)
(d) Kidney

97. Who discovered circulation of blood in the human body?
(a) Edward Jenner
(b) Joseph Lister
(c) William Harvey (Correct)
(d) Jonon Esals

98. Who was the surgeon who pioneered antiseptic surgery?
(a) Edward Jenner
(b) Joseph Lister (Correct)
(c) Henry William
(d) John Gleeman
99. The credit of inventing the television goes to
ta) Faraday
(b) Baird (Correct)
(c) Edison
(d) Marconi


IMPORTANT NOTICE TO ALL 2023 JAMB UTME CANDIDATES

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We are using this medium to notify all 2023 JAMB Candidates to beware of many Scam and Rogue websites who are out to defraud and lure gullible persons, most especially candidates sitting for the forthcoming 2023 Joint Admissions and Matriculation Board (JAMB) Unified Tertiary Matriculation Examination (UTME) scheduled to hold from Tuesday 24th April - Tuesday 2nd May, 2023, into believing that they can obtain authentic questions/ answers for the examination a day or two days to their respective examination date either using their JAMB REG Number or other details as it is IMPOSSIBLE.

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