Take your time to read instructions before taking this test.

There are 40 questions which you are to answer in 15 minutes that gives you roughly 30 seconds per question.

If you can get at least 60%, you can be rest assured that you’ll ace CHM 204 exam

In a normal exam you will be asked between 40 – 60 questions but I only arranged 40 questions

Note

Do not be in a hurry to answer the questions

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Move as fast as possible and starting with questions that don’t have calculation first to save time

Always crosscheck

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70 – 100 A

60 – 69 B

50 – 59 C

45 – 49 D

40 – 44 E

0 – 39 F

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CHM 204

1 / 40

1. Starch is also called the following except ____

A. Amylose

B. Polymer

C. Pectin

D. Amylum

2 / 40

Diethylether is correctly represented by the formula

A. CH3OCH2CH3

B. CH3OCH3

C. CH3CH2CH3CH2

D. CH3CH2OCH2CH3

3 / 40

3. Which of the following is a primary Amine ?

A. Triethylamine

B. 1,3 Pentane diamine

C. N-ethyl, N Methylamine

D. N-methyl phenlyl amine

4 / 40

4. The following will turn blue black with iodine except ____

A. Groundnut

B. Pupuru

C. Garri

D. Guinea corn

5 / 40

5. The boiling point of tertiary butanol is 65degreeC whereas that of normal butanol is 88degreeC, the difference in there b.p is due to ___

A. hydrogen bonding

B. isomerism

C. resonance

D. nucleophilicity

6 / 40

6. The process by which benzene and its derivatives are extracted from petroleum is called ___________

A. Aromatization

B. Hydroforming

C. Polymerization

D. Cracking

7 / 40

Ethane is sp3 hybridized molecules and has ---- bond angle

A. 90.5 degrees

B. 190.5 degrees

C. 45.5 degrees

D. 120.5degrees

8 / 40

8. Iodoform is easily recognized by?

A. it’s medicinal smell and yellow colour

B. it’s urine smell

C. It’s ether smell and blue colour

D. it’s ammonia smell and green colour

9 / 40

9. The gas produced when sodium metal is dropped in ethanol _____

A. CO2

B. O2

C. H2

D. N2

10 / 40

10. Which of the following statements is incorrect?

A. Aliphatic alcohols are less acidic than phenols

B. Alcohol can be prepared from the reduction of esters

C. Methanol is also called wood alcohol

D. Alcohol can be prepared by addition of water to double bonds

11 / 40

11. The general reaction of the carbonyl groups?

A. nucleophilic addition

B. electrophilic addition

C. electrophilic substitution

D. nucleophilic substitution

12 / 40

12. Reacting acid anhydride with benzene will produce _____

A. aldehyde,ketone and alcohol

B. esters,alcohol and carboxylic acid

C. ketone and carboxylic acid

D. the reaction would not occur because of steric hinderance

13 / 40

13. The enzyme responsible for fermentation of bread in yeast is ?

A. Zymase

B. Zylose

C. Ketose

D. Yeastose

14 / 40

14. phenol is regarded as an acid because _____

A. it’s insoluble in water

B. it easily releases a proton due to resonance

C. it’s volatile

D. it’s corrosive to the skin

15 / 40

15. Alcohol can be concentrated by ?____

A. distillation of product with benzene

B. treatment of the product with dehydrating agent and filtration

C. by boiling the product

D. distillation of the product

16 / 40

16.

In the hybrids orbitals, as the s character increase, bond length -------

A. Weakens

B. Increase

C. Decrease

D. Stabilize

17 / 40

17. Saponification reaction is best described as _____

A. Condensation reaction

B. Base promoted hydrolysis reaction

C. Soap making reaction

D. Acid promoted hydrolysis reaction

18 / 40

18. The following are reducing sugars except ____

A. Sucrose

B. Lactose

C. Glucose

D. Maltose

19 / 40

19. Another name for methyl benzene is __________

A. Phenol

B. Toluene

C. Naphthalene

D. Xylene

20 / 40

20.

Hydrogenation of benzene at higher temperature and under pressure yields ________

A. Cyclohexene

B. Cyclohexane

C. Cyclohexyne

D. Benzaldehyde

21 / 40

21. Which of these functional group Is not found in the structure of urea ?

A. Amide

B. Thiol

C. Carbon2I

D. Hydroxyl

22 / 40

22. An equilibrium mixture of ethanol and water boils at?

A. 68 and 98) degree C

B. 90 degree C

C. 78 and 100) degree C

D. 68 degree C

23 / 40

23. The most widely used method for the preparation of alkyl halides is from __________

A. Alekenes

B. Alkanes

C. Alcohol

D. Grignard Reagent

24 / 40

24. A natural source of phenol is _____

A. fermentation of plants

B. vegetable oils

C. high temperature distillation

D. coal tar

25 / 40

25. Which of the following will be most acidic?

A. CH3.OH

B. CH2.CH2.CH2.COOH

C. CH3.CH2.C.Cl2.COOH

D. CH3.CH.CH2.COOH

26 / 40

26. Ketones are less susceptible to nucleophilic attack than aldehydes because ____?

A. ketones are more reactive

B. Aldehydes are more stable than ketones

C. The steric hinderance of the alkyl group of ketones may affect their reactivity

D. Ketones are less stable than aldehydes

27 / 40

27. Which general class of compounds does amine belong?

A. Nitro amine

B. Acetamide

C. Propanol amine

D. Nitrile

28 / 40

28.

The stronger an acid the ___________ is its conjugate base

A. Stronger

B. Weaker

C. Both have no correlation

D. None of the options

29 / 40

29.

The substitution of an acyl group into an aromatic ring by the reaction with an acid chloride in the presence of Lewis acid is called ____________

A. Hyperconjugation

B. Friedel - Craft acylation

C. Friedel - Craft akylation

D. Hydrogenation

30 / 40

30.

Ar-OH stands for ------- functional group

A. Ketone

B. Phenol

C. Aldehyde

D. Ester

31 / 40

31.

A functional group in a molecule exhibits characteristic ------

A. Odour change

B. Chemical properties

C. Physical properties

D. Colour change

32 / 40

32. There are ---------- resonance structures of benzene

A. 3

B. 4

C. 2

D. 5

33 / 40

33. The E2 reactions of alkyl halides are favoured by the use of __________

A. Weak Base

B. Strong Base

C. Strong Acid

D. Weak Acid

34 / 40

34. The number or π-electrons in benzene is _____________

A. 2

B. 8

C. 4

D. 6

35 / 40

35.

A benzenoid hydrocarbon in which two benzene rings are fused together at the ortho position is called ____________

A. Anthracene

B. Phenanthrene

C. Biphenyl

D. Naphthalene

36 / 40

36. An example of Isolated Benzenoid Hydrocarbon is __________

A. Phenatrene

B. Biphenyl

C. Anthracene

D. Naphthalene

37 / 40

37. Sulphonation of benzene yields ___________

A. Sulphonic acid

B. Auto sulphur benzene

C. Para sulphur benzene

D. Sulphric acid

38 / 40

38. CH3CH2CH2.C(CH3)2.OH is ?

A. 2,2-dimethyl-1-pentanol

B. 2,2-dimethyl-1-butanol

C. 2-methyl-1-butan-1-ol

D. 2,2-dimethyl-2-butanol

39 / 40

39.

The parent compound of polynuclear hydrocarbons is ___________

A. Naphthalene

B. Anthracene

C. Biphenyl

D. Phenatrene

40 / 40

40.

In electrophilic addition to alkenes, the electrophilic attack is on __________

A. C=C bond

B. None of the options

C. H-H bond

D. C-H bond

Your score is

The average score is 43%

CHM 204 CBT PRACTICE

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