JAMB CHEMISTRY PAST QUESTIONSAcadlly LearningJanuary 9, 2022JAMB/UTME Exam Past Questions & Answers 0% 2 JAMB CHEMISTRY PAST QUESTIONS JAMB CHEMISTRY PAST QUESTIONS Attempt all 60 questions picked from our pool past questions. You have 1 hour to answer all 60 questions. You can retake the exam again and again Goodluck 1 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS The elements that belong to the third period of periodic table are Na, P, O and Cl Li, Be, Al and D B, C, N, and O N2, Mg, S and Ar 2 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS Which of the following is the best starting material for the preparation of oxygen? Heating of trioxonitrate (v) with Pb Ca Na Zn 3 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS The weakest attractive force that can be observed between two molecules is covalent ionic co-ordinate covalent vander Waals 4 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS According to the Kinetic Theory an increase in temperature causes the kinetic energy of particles to be zero decrease remain constant increase 5 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS The tincture of iodine means iodine dissolved in water bromine chloride ethanol chlorine water 6 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS P1V1 = P2V2 supports ? Charles’s law Boyles’s law Graham’s law Avogadro’s law 7 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS A major source of oxide of oxygen is from the burning of wood chlorofluorocarbons coal fuel 8 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS An elements used in production of matches is sulphur copper aluminum nitrogen 9 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS Which of these alloys contains copper? solder steel bronze permallory 10 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS Which of the following is an example of a chemical change? rusting of iron dissolution of salt in water melting of ice separating a mixture by distillation 11 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS There are basic particles from which matter called be made except Salt Molecule Atom Ion 12 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS Which of the following metals is the most essential in the regulation of blood volume, blood pressure and osmotic equilibrium? Manganese Sodium Iron Zinc 13 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS The gas that is most useful in protecting humans against solar marathon is hydrogen sulphur carbon IV oxide ozone chlorine 14 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS Ethanol is soluble in water due to the presence of a Methyl group Carbonyl group Hydroxyl group Phenyl group 15 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS The ideal gas laws and equations are true for all gases at high pressures and high temperatures low temperatures and high pressures low pressure and high temperatures low pressures and lower temperatures 16 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS The principle of column chromatography is based on th ability of the constituents to Dissolve in each other in the column Move at different speeds in the column React with each other in the solvent in the column React with the solvent in the column 17 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS Which of the following types of alkanols undergo oxidation to produce alkanoic acids. I. Primary alkanols II. Secondary alkanols III. Tertiary alkanols I only I, II and III III only I and II only 18 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS When ΔH is negative, a reaction is said to be ionic reversible exothermic endothermic 19 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS Cathode rays cause an object placed behind a perforated anode to cast a shadow on the screen. This observation shows that the rays are positively charged have mass travel in straight lines are negatively charged 20 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS An isomer of C5H12 is 2–methyl butane 2–ethyl butane 2–methyl propane butane 21 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS Which of the following represents the kind of bonding present in ammonium chloride? covalent only ionic and dative covalent dative covalent ionic only 22 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS The energy value of petrol can be determined by Catalytic cracker Bomb calorimeter Fractionating column Thermometer 23 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS The process that occurs when two equivalent forms of a compound are in equilibrium is Isomerism Reforming Resonance Isotopy 24 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS Elements P, Q, R, S have 6, 11, 15, 17 electrons respectively, therefore, Q will form a covalent bond with S P will form an electrovalent bond with R R will form an electrovalent bond with S Q will form an electrovalent bond with S 25 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS Hydrogen can be displaced from a lot alkaline solution by Sn Cu Cn Fe 26 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS The oxidation number of iodine in KIO3 is +5 +7 +3 +6 27 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS Which of the following does not support the fact that air is a mixture? none of the above it cannot be represented with a chemical formula the constituents of air can be separated by physical by physical means the constituents of air are in a fixed proportion by mass 28 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS In the production of soap, concentrated sodium chloride solution is added to emulsify the soap saponify the soap decrease the solubility of the soap increase the solubility of soap 29 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS The shape of ammonia molecules is square planar tetrahedral trigonal planar octahedral 30 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS Iron is often galvanized in order to Protect it against corrosion Render it passive Remove the impurities unit Make it more malleable 31 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS The process that requires the use of hardwater in its operation is Laundry Bottling Dyeing Tanning 32 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS Which of the noble gases has the greatest ionization energy Rr Ar Xe He 33 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS The above orbital diagram shown the electronic configuration of neon nitrogen chlorine calcium 34 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS The mass of silver deposited when a current of 10A is passed through a solution of silver salt for 4830s is – (Ag = 108 F = 96500(mol-1) 13.5g 27.0g 54.0g 108.0g 35 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS Sieving is a technique used to separate mixtures containing solid particles of large sizes small sizes different sizes the same size 36 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS What technique is suitable for separating a binary solution of potassium chloride and potassium trioxochlorate (V)? Filtration Fractional crystallization Fractional distillation Evaporation 37 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS The enzyme used in the hydrolysis of starch to dextrin and maltose is diastatse invertase zymase amylase 38 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS Ammonium chloride can be separated from its mixture with common salt by Distillation Evaporation Decantation Sublimation 39 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS During the electrolysis of copper II sulphate between platinum electrodes, if litmus solution is added to the anode compartment the litmus turns blue and oxygen is evolved the litmus turns blue but no gas is evolved the litmus turns red and oxygen is evolved the litmus turns blue and hydrogen is evolved 40 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS The radioisotope used in industrial radiography for the rapid checking of faults in welds and casting is Phosphorus-32 Cobalt-60 Iodine-131 Carbon-14 41 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS The elements in the periodic table are listed in order of increasing relative atomic number relative isotopic mass atomic mass nuclear charge 42 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS Which of the following metals cannot replace hydrogen from water or steam? Calcium Sodium Iron Magnesium 43 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS A synthetic rubber is obtained from the polymerization of isoprene neoprene butandiene propylene 44 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS A gas X diffuses twice as fast as gas Y. if the relative molecular mass of X is 32, calculate the relative molecular mass of Y. 128 64 8 16 45 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS The periodic classification is an arrangement of the elements isotopic weights molecular weights atomic weights atomic numbers 46 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS A substance that is used as a ripening agent for fruits is butane methane ethene propane 47 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS The derivative of benzene that can be used in making explosives is xylene aniline phenol toluene 48 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS When large hydrocarbon molecules are heated at high temperature in the presence of a catalyst to give smaller molecules, the process is known as cracking polymerization degradation disintegration 49 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS 200 cm3 of a gas at 25oC exerts a pressure of 700 mmHg. Calculate its pressure if its volume increase 350 cm3 at 75oC. 467.11 mmHg 400.00 mmHg 342.53 mmHg 1430.54 mmHg 50 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS Rare gases are suitable because they are volatile gases have duplet or octet electronic configuration in the outermost shells in their atoms form ions easily are monoatomic 51 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS If the molecular mass of tetraoxosulphate (VI) acid is 98, calculate its vapour density. 106 82 196 49 52 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS Cast iron is used in making Iron sheets and retort stand Stoves and cookers Chains and agricultural implements Nails and iron rods 53 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS Flow of current in electrolytes is due to the movement of Ions Electrons holes and electron Charges 54 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS Which of the activities is commonly used as a nuclear fuel uranium thorium palladium actium 55 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS Aluminium hydroxide is used in the dyeing industry as a mordant dye dispersant salt 56 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS The compounds CH3CH2CHO and CH3COCH3 can be distinguished from each other using Sodium hydroxide solution Dilute ammonia Benedict's solution Tollen's reagent 57 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS In a neutralization reaction involving HCI and NaOH using litmus as indicator, the colour at the end point is Blue Orange Red Purple 58 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS Which of these require crystallization most? Drug making Paint making Perfume making Cement making 59 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS A given mass of gas occupies 2dm3 at 300k. At what temperature will its volume be doubled, keeping the pressure constant? 400k 550k 600k 480k 60 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS When ammonia and hydrogen ion bond together to form ammonium ion, the bond formed is called covalent bond ionic bond co-ordinate bond electrovalent bond Email Your score is LinkedIn Facebook VKontakte 0% Restart quiz Send feedback Related posts: JAMB MATHEMATICS PAST QUESTIONS JAMB ENGLISH LANGUAGE PAST QUESTIONS JAMB Accounting Past Questions JAMB Accounting Past Question and Answer
