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JAMB CHEMISTRY PAST QUESTIONS

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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.

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1 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

In the industrial production of H2 is removed by (solution)

2 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

The ionic radii of metals are usually

3 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

The periodic classification is an arrangement of the elements

4 / 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

5 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

A mixture is different from a compound because

6 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

Ethanol is soluble in water due to the presence of a

7 / 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)

8 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

Calculate the amount in moles of silver deposited when 9650C of electricty is passed through a solution of silver salt [= 96500 Cmol-1]

9 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

Which of these alloys contains copper?

10 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

The oxidation number of iodine in KIO3 is

11 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

The radioisotope used in industrial radiography for the rapid checking of faults in welds and casting is

12 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

Which of these require crystallization most?

13 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

Which of the following is an example of a chemical change?

14 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

The ideal gas laws and equations are true for all gases at

15 / 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

16 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

The Sulphide which is insoluble in dilute hydrochloric acid is

17 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

A second alkanol can be oxidized to give an

18 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

The salt formed from a weak acid and a strong base hydrolyzes in water to form

19 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

Which of the following alkaline metals react more quickly spontaneously with water?

20 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

The number of isomers formed by C6H14 is

21 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

The reaction of halogens in the presence of sunlight is an example of

22 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

The energy value of petrol can be determined by

23 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

Which of the following metals burns with brick red

24 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

Which of the following statements is correct about the periodic table?Which of the following statements is correct about the periodic table?

25 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

The compounds CH3CH2CHO and CH3COCH3 can be distinguished from each other using

26 / 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

27 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

Atomicity of ozone is

28 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

The ability of carbon to form long chains is referred to as

29 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

Elements P, Q, R, S have 6, 11, 15, 17 electrons respectively, therefore,

30 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

The principle of column chromatography is based on th ability of the constituents to

31 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

Which of the following properties is not peculiar to matter?

32 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

Which of the compounds is composed of Al, Si, O and H?

33 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

When ammonia and hydrogen ion bond together to form ammonium ion, the bond formed is called

34 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

A synthetic rubber is obtained from the polymerization of

35 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

When salt loses its water of crystallization to the atmosphere on exposure, the process is said to be

36 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

The metal whose ore can be concentrated by passing it through a magnetic separator is

37 / 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?

38 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

The shape of ammonia molecules is

39 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

Cast iron is used in making

40 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

Diamond cannot be used

41 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

Which of the following statements is true about 2-methylpropane and butane

42 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

Ammonium chloride can be separated from its mixture with common salt by

43 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

Which of the noble gases has the greatest ionization energy

44 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

Which of the following will give a precipitate with an aqueous solution of copper (I) chloride?

45 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

A major source of oxide of oxygen is from the burning of

46 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

Which of the following metals cannot replace hydrogen from water or steam?

47 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

The enzyme used in the hydrolysis of starch to dextrin and maltose is

48 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

The situation obtained when a perfect gas expands into a vacuum is

49 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

Iron is often galvanized in order to

50 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

P1V1 = P2V2 supports ?

51 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

Calculate the percentage composition of oxygen in calcium trioxocarbonate(IV) [Ca=40, C=12, O=16]

52 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

The constituent common to duralumin and alnico is

53 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

Which of the following statements about catalyst is false?

54 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

A suitable reagent for distinguish between ethanoic and ethanol is

55 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

Hydrogen can be displaced from a lot alkaline solution by

56 / 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.

57 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

An oxidation state of or in K2CrO7

58 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

An element used in the production of matches is

59 / 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

60 / 60

Category: JAMB CHEMISTRY PAST QUESTIONS

Tartaric acid is used industrially to

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