As promised by KLASSICSENTENCE team to help all our JAMB candidates in preparing for their forthcoming JAMB exams, we do not have plans of not pushing through that promise as such we have taken our time to draft out some study questions to help our audience to prepare for their exam.
NOTE: this is not JAMB questions, we are not in the business of selling fake question in other to make money this is just questions drafted by some Chemistry students University of Nigeria Nsukka to help JAMB candidates test them selves and know how well they have prepared for the exam.
Invite your friends in other to take part in these great preparatory test, for it is penitent for a student to test his/her self before going in for the main exam.
In case you fined any question confusing please use the comment box to state it, one of the admins of KLASSICSENTENCE.COM will clear you or any other member can do so. One can still answer the questions using the comment box. Okey let go
1. 2CO(g) + O2(g) == 2CO2(g)
In the reaction above, high pressure will favor the forward reaction because
(a) the reaction is in dynamic equilibrium
(b) the process occurs with a decrease in volume
(c) high pressure favors gas formation
(d) the process occurs with a decrease in volume
2. An increase in entropy can best be illustrated by
(a) solidifying candle wax
(b) mixing of gases
(c) freezing of water
(d) the condensation of vapour
3. Which of the following is not an alkali?
(a) NaOH
(b) NH3
(c) Ca(OH)2
(d) Mg(OH)2
4. How many cations will be produced from a solution of potassium aluminium tetraoxosulphate(vi)?
A.1 B. 3 C. 4 D. 2
5. CH4(g) +Cl2(g) == CH3Cl(s) + HCl(g)
The major factor that influences the rate of the reaction above is
(a) light
(b) catalyst
(c) temperature
(d) concentration
6.The conditions required for corrosion to take place is the presence of
(a) water and carbon(iv) oxide
(b) water, carbon(iv) oxide and oxygen
(c) water and oxygen
(d) oxygen and carbon(iv) oxide
7. Which of the following compounds will burn with a brick-red color in a non-luminous Bunsen flame.
(a) LiCl
(b) NaCl
(c) CaCl2
(d) MgCl2
8. The purest from of iron which contains only about 0.1% carbon is.
(a) pig iron
(b) wrought iron
(c) cast iron
(d) iron pyrite
9. Which of the following metals is the least reactive?
(a) Au
(b) Pb
(c) Sn
(d) Hg
10. If the difference in electronegativity of elements P and Q is 3.0 The bond that will be formed between them is.
(a) ionic
(b) covalent
(c) metallic
(d) co-ordinate
11. An element X has electron configuration 1s2, 2s2, 2p6 3s2 3p5. which of the following statement is correct about the element.
(a) it has 5 electrons in its outermost shell
(b) it has a completely filled P-orbital
(c) it is a halogen
(d) it belongs to group II on the periodic table
12. Beryllium and aluminium have similar properties because they
(a) belong to the same group
(b) are positioned diagonally to each other
(c) are both metals
(d) belong to the same period
13. The bleaching action of chlorine gas is effective due to the presence of
(a) air
(b) Oxygen
(c) water
(d) hydrogen chloride
14. A few drops of concentrated HNO3 is added to an unknown solution and boiled for a while. If this produces a brown solution, the cation present is likely to be
(a) Pb2+ (b) Fe3+ (c) Cu2+ (d) Fe2+
15. The impurities formed during the laboratory preparation of chlorine gas are removed by
(a) HCl
(b) H2O
(c) NH3
(d) H2SO4
16. The relative atomic mass of a naturally occurring lithium consisting of 90% [7,3]Li 10% [6,3]Li is
(a) 7.1
(b) 6.9
(c) 6.2
(d) 6.8
17. What is the concentration of a solution containing 2g of NaOH in 100cm3 of solution?
(a) 0,40 mol dm-3
(b) 0.30 mol dm-3
(c) 0.05 mol dm-3
(d) 0.50 mol dm-3
18. An isotope has an atomic number 15 and a mass number of 31. The number of protons it contains is
(a) 16
(b) 15
(c) 31
(d) 46
19. Which of the following properties is NOT peculiar to matter?
(a) kinetic energy of particles increases from solid to gas
(b) Random motion of particles increases from gas to solid.
(c) Random motion of particles increases from liquid to gas.
(d) Orderliness of particles increases from gas to liquid
20. The molecular lattice of iodine is held together by
(a) dative bond
(b) metallic bond
(c) hydrogen bond
(d) van der Waal's forces
21. what is the percentage of sulphur in sulphur(iv) oxide
(a) 40%
(b) 25%
(c) 66%
(d) 50%
22. The basicity of CH3COOH is
(a) 1
(b) 3
(c) 2
(d) 4
23.The color of litmus in a neutral medium is
(a) pink
(b) purple
(c) yellow
(d) orange
24. The mathematical expression of pH is
(a) log10 1/[H3O+]
(b) log10 [OH-]
(c) log10 [H3O+]
(d) log10 1/[H3O-]
25. The nitrogen obtained from air has a density higher than the one from nitrogen containing compounds because the one from air is contaminated with
(a) carbon(iv) oxide
(b) rare gases
(c) oxygen
(d) water vapor
26. Water is said to be temporarily hard when it contains
(a) Ca(HCO3)2 and CaCO3 salts.
(b) Mg(HCO3)2 and CaSO4 salt
(c) CaSO4 and Ca(HCO3)2salt
(d) Ca(HCO3)2 and Mg(HCO3)2 salt
27. The dispersion of a liquid in a liquid medium will give
(a) a fog
(b) a gel
(c) an emulsion
(d) an aerosol
28. A silicon containing ore has 92% [28]Si, 5% [29]Si, 3% [30]Si. calculate the relative atomic mass of the silicon
(a) 29.00
(b) 28.11
(c) 14.00
(d) 28.00
29. Fluorine does not occur in the free state in nature because
(a) of its high reactivity
(b) it is inert
(c) it belongs to the halogen family.
(d) poisonous gas
30. Rate klassicsentence.com
(a) bad
(b) nice
(c) not too bad
(d) excellent
Keep visiting for more practice questions, I promise you that you are going to do well in your exam, please feel free to table your compliant using the comment box.
The Organic part will soon be published
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