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

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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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Created on June 21, 2024 By

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CHM 204

1 / 40

1. Which general class of compounds does amine belong?

A. Propanol amine

B. Acetamide

C. Nitrile

D. Nitro amine

2 / 40

2. 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

3 / 40

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

A. Yeastose

B. Ketose

C. Zylose

D. Zymase

4 / 40

4. The following are reducing sugars except ____

A. Lactose

B. Sucrose

C. Maltose

D. Glucose

5 / 40

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

A. Hydroxyl

B. Thiol

C. Amide

D. Carbon2I

6 / 40

6. 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. nucleophilicity

B. resonance

C. hydrogen bonding

D. isomerism

7 / 40

) [CH3Co]20 is ______

A. Dicarboxylic acid

B. An amide

C. An anhydride

D. An ether

8 / 40

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

A. 4

B. 3

C. 5

D. 2

9 / 40

RNH2 stands for class of compound called --------

A. Amines

B. Amides

C. Aromatics

D. Esters

10 / 40

10. Denaturation involves the loss of what type of structure?

A. Secondary

B. Secondary and Tertiary

C. Tertiary

D. Primary

11 / 40

11.

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

A. Physical properties

B. Colour change

C. Chemical properties

D. Odour change

12 / 40

12. Which of the following is the formula for Hydroxylamine ?

A. CH3.NH2.OH

B. C6.H5.NH-OH

C. CH2.OH

D. H2.N.OH

13 / 40

13. Alcohol can be concentrated by ?____

A. distillation of the product

B. by boiling the product

C. treatment of the product with dehydrating agent and filtration

D. distillation of product with benzene

14 / 40

14. The following terms can be used to describe cellulose except ____

A. Polymer

B. Bioenzyme

C. Polysaccharide

D. Biomass

15 / 40

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

A. Guinea corn

B. Garri

C. Pupuru

D. Groundnut

16 / 40

16. Another name for methyl benzene is __________

A. Toluene

B. Phenol

C. Xylene

D. Naphthalene

17 / 40

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

A. 78 and 100) degree C

B. 68 and 98) degree C

C. 90 degree C

D. 68 degree C

18 / 40

18.

HCHO is an organic compound popularly known as ------

A. Methanoic acid

B. Formic acid

C. Ethanal

D. Formaldehyde

19 / 40

19.

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

A. Ketone

B. Phenol

C. Aldehyde

D. Ester

20 / 40

20. which of the following can be used to elongate a sugar ?

A. Na.BH4

B. N.H2.OH

C. All

D. H.C.N

21 / 40

21. For halogen derivatives of aromatic compounds, boiling point ---------- with increase in atomic size of the halogen atom.

A. Averages

B. Have no effect

C. Increases

D. Decreases

22 / 40

22.

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

A. Weakens

B. Stabilize

C. Decrease

D. Increase

23 / 40

23.

The benzenoid hydrocarbons in which two or more benzene rings are fused together at ortho position in such a way that each pair of rings shares rings shares two carbons are called ---------- benzenoid hydrocarbon.

A. None of the options

B. Isolated

C. All the options

D. Condensed

24 / 40

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

A. Aldehydes are more stable than ketones

B. ketones are more reactive

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

D. Ketones are less stable than aldehydes

25 / 40

25. In order to produce a primary amide,an acid chloride should be treated with ___

A. Ammonia

B. A secondary amine

C. An alcohol

D. A primary amine

26 / 40

26. Basic hydrolysis of any oil can produce ___

A. Soap

B. hydrated oil

C. oil hydrolyte

D. oil hydrolyte

27 / 40

27. Starch is also called the following except ____

A. Amylum

B. Amylose

C. Pectin

D. Polymer

28 / 40

28.

The stronger an acid the ___________ is its conjugate base

A. Weaker

B. Both have no correlation

C. None of the options

D. Stronger

29 / 40

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

A. Weak Base

B. Strong Acid

C. Weak Acid

D. Strong Base

30 / 40

30. Iodoform is easily recognized by?

A. it’s urine smell

B. It’s ether smell and blue colour

C. it’s ammonia smell and green colour

D. it’s medicinal smell and yellow colour

31 / 40

31. Organic chemistry is the study of ?___

A. non hydro carbons

B. all carbon compounds

C. hydro carbon

D. some carbon compounds

32 / 40

32. Saponification reaction is best described as _____

A. Condensation reaction

B. Acid promoted hydrolysis reaction

C. Soap making reaction

D. Base promoted hydrolysis reaction

33 / 40

33.

The presence of an aromatic ring in a compound is detected by ____________

A. Ultraviolet spectroscopy

B. Mass spectroscopy

C. Chromatography

D. Infrared spectroscopy

34 / 40

34. The reaction of benzene with propanoyl chloride in the presence of Aluminum chloride will yeild _____

A. Phenyl acetone

B. Acetophenone

C. Phenyl methyl ketone

D. Phenyl propyl ketone

35 / 40

35. The general reaction of the carbonyl groups?

A. nucleophilic substitution

B. electrophilic addition

C. electrophilic substitution

D. nucleophilic addition

36 / 40

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

A. 8

B. 6

C. 4

D. 2

37 / 40

37. Sulphonation of benzene yields ___________

A. Auto sulphur benzene

B. Sulphric acid

C. Sulphonic acid

D. Para sulphur benzene

38 / 40

38.

Hydrogenation of benzene at higher temperature and under pressure yields ________

A. Cyclohexene

B. Cyclohexyne

C. Benzaldehyde

D. Cyclohexane

39 / 40

39.

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

A. Biphenyl

B. Anthracene

C. Phenanthrene

D. Naphthalene

40 / 40

40.

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

A. C-H bond

B. C=C bond

C. None of the options

D. H-H bond

Your score is

The average score is 43%

CHM 204 CBT PRACTICE

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