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 102 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

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50 – 59 C

45 – 49 D

40 – 44 E

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Created on July 14, 2023 By

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CHM 102

1 / 50

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

A. ketones are more reactive

B. Ketones are less stable than aldehydes

C. Aldehydes are more stable than ketones

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

2 / 50

RCHO stands for ----- functional group.

A. Ketone

B. Alcohol

C. Ester

D. Aldehyde

3 / 50

3. Basic hydrolysis of any oil can produce ___

A. oil hydrolyte

B. Soap

C. oil hydrolyte

D. hydrated oil

4 / 50

4. Alcohol can be concentrated by ?____

A. distillation of product with benzene

B. by boiling the product

C. treatment of the product with dehydrating agent and filtration

D. distillation of the product

5 / 50

5. phenol is regarded as an acid because _____

A. it’s corrosive to the skin

B. it’s volatile

C. it’s insoluble in water

D. it easily releases a proton due to resonance

6 / 50

6. CH3.COOH has a greater miscibility with water than CH3.CH3-CH2-COOH. The reason is due to ?___

A. Ionization

B. Hydrogen bonding

C. Mutual incompatibility

D. Lower molecular weight

7 / 50

7. In a neutral solution,most amino acids exist as ?___

A. negatively charged compounds

B. positively charged compounds

C. zwitterions

D. hydrophobic moleculesq

8 / 50

8. 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

9 / 50

9. 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

10 / 50

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

A. Biomass

B. Bioenzyme

C. Polysaccharide

D. Polymer

11 / 50

11. A positive test to Benedict’s reagent is indicated by ___

A. Brick-red to brown

B. Brick-red to blue

C. Brown to blue

D. Blue to brick-red

12 / 50

12.

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

A. Phenol

B. Aldehyde

C. Ester

D. Ketone

13 / 50

13.

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

A. Physical properties

B. Odour change

C. Chemical properties

D. Colour change

14 / 50

14.

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

A. Methanoic acid

B. Formic acid

C. Ethanal

D. Formaldehyde

15 / 50

15. The following are reducing sugars except ____

A. Glucose

B. Lactose

C. Maltose

D. Sucrose

16 / 50

16. An oil sample high in 9,12,15 octadecentrienic acid _____

A. likely not to be reactive with iodine

B. useful in the manufacture of margarine

C. likely to be highly saturated

D. useful in the manufacture of paints

17 / 50

17. Which pair of reactants below will react to produce an acetal ?

A. alcohol + aldehydes

B. ketone + alcohol

C. primary aldehyde + ketone

D. acid + acetone

18 / 50

18.

Identify the most acidic compound from the following options

A. C3.H7.COOH

B. Cl2.CH.COOH

C. C2.H5.COOH

D. Cl.CH2.COOH

19 / 50

19. The general reaction of the carbonyl groups?

A. electrophilic substitution

B. electrophilic addition

C. nucleophilic addition

D. nucleophilic substitution

20 / 50

20. Starch is also called the following except ____

A. Amylose

B. Amylum

C. Polymer

D. Pectin

21 / 50

21.

) [CH3Co]20 is ______

A. Dicarboxylic acid

B. An anhydride

C. An amide

D. An ether

22 / 50

22. Reacting acid anhydride with benzene will produce _____

A. the reaction would not occur because of steric hinderance

B. esters,alcohol and carboxylic acid

C. aldehyde,ketone and alcohol

D. ketone and carboxylic acid

23 / 50

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

A. Zylose

B. Ketose

C. Yeastose

D. Zymase

24 / 50

24. Which of the following is a primary Amine ?

A. Triethylamine

B. N-ethyl, N Methylamine

C. N-methyl phenlyl amine

D. 1,3 Pentane diamine

25 / 50

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

A. CH2.OH

B. CH3.NH2.OH

C. C6.H5.NH-OH

D. H2.N.OH

26 / 50

26.

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

A. Amines

B. Amides

C. Esters

D. Aromatics

27 / 50

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

A. A secondary amine

B. A primary amine

C. Ammonia

D. An alcohol

28 / 50

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

A. Phenyl propyl ketone

B. Phenyl acetone

C. Phenyl methyl ketone

D. Acetophenone

29 / 50

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

A. Primary

B. Tertiary

C. Secondary and Tertiary

D. Secondary

30 / 50

30. 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. hydrogen bonding

C. isomerism

D. resonance

31 / 50

31. Polymerization of ethyne produces ?

A. polyethyne

B. none of the above

C. Benzoic acid

D. Benzene

32 / 50

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

A. CO2

B. N2

C. O2

D. H2

33 / 50

33. The easiest way to recognize phenylamine in the laboratory is ___

A. solubility in acid

B. Strong fishy smell

C. phenolic odour

D. solubility in water

34 / 50

34.

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

A. 90.5 degrees

B. 120.5degrees

C. 190.5 degrees

D. 45.5 degrees

35 / 50

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

A. Groundnut

B. Pupuru

C. Garri

D. Guinea corn

36 / 50

36.

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

A. Increase

B. Decrease

C. Weakens

D. Stabilize

37 / 50

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

A. 68 degree C

B. 68 and 98) degree C

C. 78 and 100) degree C

D. 90 degree C

38 / 50

38. Saponification reaction is best described as _____

A. Base promoted hydrolysis reaction

B. Acid promoted hydrolysis reaction

C. Soap making reaction

D. Condensation reaction

39 / 50

39.

CH3COCH3 stands for ------

A. Ketone

B. Aldehyde

C. Acid

D. Ester

40 / 50

40.

180o bond angle is characteristic of ------ molecules
Oxidized

A. Sp2 hybridized

B. Sp3 hybridized

C. None

D. Sp hybridized

41 / 50

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

A. 2-methyl-1-butan-1-ol

B. 2,2-dimethyl-2-butanol

C. 2,2-dimethyl-1-pentanol

D. 2,2-dimethyl-1-butanol

42 / 50

42. Beside peptide bond,what other covalent bonds are commonly found in peptides ?

A. hydrogen bond

B. hndrophobic bond

C. disulfide bond

D. ether bond

43 / 50

43. Which general class of compounds does amine belong?

A. Acetamide

B. Nitrile

C. Nitro amine

D. Propanol amine

44 / 50

44. A natural source of phenol is _____

A. fermentation of plants

B. high temperature distillation

C. vegetable oils

D. coal tar

45 / 50

45.

Diethylether is correctly represented by the formula

A. CH3CH2CH3CH2

B. CH3OCH2CH3

C. CH3CH2OCH2CH3

D. CH3OCH3

46 / 50

46. The product of fermentation of cassava is ____

A. Alcohol

B. ketone

C. carboxylic acid

D. Aldehyde

47 / 50

47. Organic chemistry is the study of ?___

A. all carbon compounds

B. non hydro carbons

C. hydro carbon

D. some carbon compounds

48 / 50

48. Which of the following statements is incorrect?

A. Alcohol can be prepared from the reduction of esters

B. Methanol is also called wood alcohol

C. Aliphatic alcohols are less acidic than phenols

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

49 / 50

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

A. Thiol

B. Hydroxyl

C. Carbon2I

D. Amide

50 / 50

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

A. All

B. H.C.N

C. N.H2.OH

D. Na.BH4

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Michael Godwin

1 year ago

34.) Biomass can also be used to describe a Cellulose; the answer is BIOENZYMES

Author

Aruwaji Philip

Reply to Michael Godwin

Noted

Evbotokhai John

3 months ago

The easiest way to recognise phenylamine is by solubility in acid not by the strong fishy smell

Reply to Evbotokhai John

Please kindly dm.

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