JAMB CHEMISTRY PAST QUESTIONSAcadlly LearningJanuary 9, 2022JAMB/UTME Exam Past Questions & Answers 0% 1 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 periodic classification is an arrangement of the elements atomic weights atomic numbers molecular weights isotopic weights 2 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS The reaction of halogens in the presence of sunlight is an example of addition reaction hydrogenation reaction oxidation reaction substitution reaction 3 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS The colour of litmus in an alkaline medium is Blue Red Yellow Pink 4 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS Atomicity of ozone is 4 1 3 2 5 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS Aluminium hydroxide is used in the dyeing industry as a salt mordant dye dispersant 6 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS What is the percentage of sulphur in sulphur (IV) oxide? 25% 66% 40% 50% 7 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS Diamond cannot be used In making bicycle chains In cutting glass and metals As dies for drawing wires As abrasives 8 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS Which of the following alkaline metals react more quickly spontaneously with water? Magnesium Calcium Beryllium Strontium 9 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS Which of these alloys contains copper? bronze steel solder permallory 10 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS The elements that belong to the third period of periodic table are B, C, N, and O Na, P, O and Cl Li, Be, Al and D N2, Mg, S and Ar 11 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS Which of the following statements is true about 2-methylpropane and butane They have different number of carbon atoms They have the same chemical properties They are members of same homologous series They have the same boiling points 12 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS A second alkanol can be oxidized to give an alkanal alkanone alkyne alkanoic acid 13 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS In electrovalency, the oxidation number of the participating metal is always constant neutral increasing decreasing 14 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS An element used in the production of matches is aluminium sulphur nitrogen copper 15 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS A liquid that will dissolve fat is kerosene calcium hydrochloride water hydrochloric acid 16 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS To what temperature must a gas at 273k be heated in order to double both its volume and pressure? 298K 1092K 546K 819K 17 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS The elements in the periodic table are listed in order of increasing relative atomic number atomic mass relative isotopic mass nuclear charge 18 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS Ethanol is soluble in water due to the presence of a Hydroxyl group Methyl group Carbonyl group Phenyl group 19 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS A major source of oxide of oxygen is from the burning of coal chlorofluorocarbons fuel wood 20 / 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 have mass are positively charged travel in straight lines are negatively charged 21 / 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? Sodium Manganese Zinc Iron 22 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS Which of the following metals burns with brick red Ca Na Mg Pb 23 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS Sieving is a technique used to separate mixtures containing solid particles of different sizes the same size small sizes large sizes 24 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS The shape of ammonia molecules is tetrahedral octahedral square planar trigonal planar 25 / 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 Carbon-14 Iodine-131 Cobalt-60 26 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS The arrangement of particles in crystal lattices can be studied using γ-rays β-rays X-rays α-rays 27 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS Burning magnesium ribbon in air removes which of the following (i) oxygen (ii) nitrogen (iii) argon and (iv) carbon(iv)oxide? i and ii only i only i and iv only i, ii, iii and iv only 28 / 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) 54.0g 13.5g 27.0g 108.0g 29 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS A synthetic rubber is obtained from the polymerization of butandiene neoprene isoprene propylene 30 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS When ammonia and hydrogen ion bond together to form ammonium ion, the bond formed is called co-ordinate bond ionic bond electrovalent bond covalent bond 31 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS In the industrial production of H2 is removed by (solution) washing under pressure using ammonical copper (I) chlorine passing the mixture to the limewater drying over phosphorus (V) oxide 32 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS The above orbital diagram shown the electronic configuration of chlorine calcium neon nitrogen 33 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS Elements P, Q, R, S have 6, 11, 15, 17 electrons respectively, therefore, Q will form an electrovalent bond with S P will form an electrovalent bond with R R will form an electrovalent bond with S Q will form a covalent bond with S 34 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS Which of the noble gases has the greatest ionization energy Ar Rr He Xe 35 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS According to the Kinetic Theory an increase in temperature causes the kinetic energy of particles to be zero increase decrease remain constant 36 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS An oxidation state of or in K2CrO7 4 6 5 7 37 / 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 38 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS 2-methylprop-1-ene is an isomer of 3-methyl but-1-ene pent-2-ene 2-methyl but-1-ene but-2-ene 39 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS The ionic radii of metals are usually unaffected by the charge on the ion less than their atomic radii greater than their atomic radii the same as their atomic radii 40 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS In the discovery of protein, the instrument used is discharge tube with terminal cathode glass tube and discharge tube cathode ray tube discharge tube with central cathode 41 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS Which of the following represents the kind of bonding present in ammonium chloride? covalent only ionic only ionic and dative covalent dative covalent 42 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS There are basic particles from which matter called be made except Salt Atom Molecule Ion 43 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS Tin is unaffected by air at ordinary temperature due to its Low melting point Weak electropositive character High boiling point White lustrous appearance 44 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS What technique is suitable for separating a binary solution of potassium chloride and potassium trioxochlorate (V)? Fractional crystallization Evaporation Fractional distillation Filtration 45 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS When salt loses its water of crystallization to the atmosphere on exposure, the process is said to be fluorescence effervescence efflorescence déliquescence 46 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS Which of the following statements does not show Rutherford's account of Nuclear Theory? An atom contains a region which is positively charged which is massive and can cause deflection of a few projectiles which is very large and in which close to 98% of projectiles pass undeflected which contains protons and neutrons 47 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS The energy value of petrol can be determined by Bomb calorimeter Fractionating column Catalytic cracker Thermometer 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 polymerization cracking disintegration degradation 49 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS A substance that is used as a ripening agent for fruits is propane methane ethene butane 50 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS Vulcanization involve the removal of the single bond the double bond a polymer monometer 51 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS The salt formed from a weak acid and a strong base hydrolyzes in water to form an acidic solution a buffer solution an alkaline solution a saturated solution 52 / 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 Na Ca Zn 53 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS If the molecular mass of tetraoxosulphate (VI) acid is 98, calculate its vapour density. 49 82 106 196 54 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS Which of the following will give a precipitate with an aqueous solution of copper (I) chloride? But-2-ene But-1-yne But-1-ene But-2-yne 55 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS Which of the following properties is not peculiar to matter? Random motion of particles increases from gas to solid Orderliness of particles increases from gas to liquid Kinetic energy of particles increases from solid to gas Random motion of particles increases from liquid to gas 56 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS Flow of current in electrolytes is due to the movement of Ions Electrons Charges holes and electron 57 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS The enzyme used in the hydrolysis of starch to dextrin and maltose is invertase amylase zymase diastatse 58 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS The constituent common to duralumin and alnico is Co Mg Al Mn 59 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS The Sulphide which is insoluble in dilute hydrochloric acid is Na2S CuS FeS ZnS 60 / 60 Category: JAMB CHEMISTRY PAST QUESTIONS The tincture of iodine means iodine dissolved in bromine chloride chlorine water water ethanol Email Your score is LinkedIn Facebook VKontakte 0% Restart quiz Send feedback
