‫وزارة التربية والتعليم‬
‫الحلقة الثالثة‬- ‫مدرسة االتحاد‬
2020- 2019 ‫العام الدراسي‬
Name:………………………………………………………………………………………
Time: 40 minutes
Class:………………………………………………………………………………………….
CHEMISTRY
Organic chemistry Revision worksheet-1
GRADE 12 General
Duration: 40 minutes
Atomic structure Electrons in an
atom
1|Page
‫وزارة التربية والتعليم‬
‫الحلقة الثالثة‬- ‫مدرسة االتحاد‬
2020- 2019 ‫العام الدراسي‬
10. How many carbon atoms do most common monosaccharides have?
A1
B 2to3
C 5or6
D 9or10
11. Organic compounds formed by replacing hydrogen of the hydrocarbon by other elements are called……
A Saturated hydrocarbon
B Unsaturated hydrocarbon
C substituted hydrocarbon
D aromatic compounds
12. How would you describe a benzene ring?
A rare
B stable
C unstable
D saturated
13. What are the small units that make up polymers called?
A monomers
B plastics
C isomers
D carbohydrates
14. What type of compound is hemoglobin?
A carbohydrate
B nucleic acid
C lipid
D protein
15. What type of compounds form the DNA molecule?
A amino acids
B polymers
C nucleotides D carbohydrates
16. Glucose and fructose both have the formula C6H12O6. What are such compounds called?
A amino acids
B isomers
C alcohols
D polymers
17. If a carbohydrate has 16 oxygen atoms, how many hydrogen atoms does it have?
A4
B 16
C8
D 32
18. What is the name of the given compound?
A Butane
B Propane
C octane
D Heptane
C octane
D Heptane
19. Which of the following hydrocarbon is present in gasoline?
A Butane
B Propane
20. Identify the hydrocarbon represented by the given space-filling model?
A Butane
2|Page
B Propane
C octane
D Heptane
‫وزارة التربية والتعليم‬
‫الحلقة الثالثة‬- ‫مدرسة االتحاد‬
2020- 2019 ‫العام الدراسي‬
21. Which of the following organic compound used for welding?
A Benzene
B Propanol
C acetylene
D Heptane
22. Structures of some hydrocarbon has given below. Identify the unsaturated hydrocarbon.
Compound 1
A Compound 1&2
Compound 2
B Compound 1&3
Compound 3
C Compound 2&3
D Compound 2only
23. Which of the following compound used as insecticide?
A Naphthalene
B Propane
C hexane
D Heptane
C Propane
D Butane
24. What is the name of the compound given below?
A cyclopropane
B Cyclobutane
25. Which one of the following is an aromatic compound?
A
B
C
D
26. Which of the following isomer of pentane has highest boiling point?
A
3|Page
B
C
D
‫وزارة التربية والتعليم‬
‫الحلقة الثالثة‬- ‫مدرسة االتحاد‬
2020- 2019 ‫العام الدراسي‬
27. The main function of DNA is to store a cell’s
A. excess fat.
B. energy reserves.
C. genetic information. D. phosphate groups.
28. The instructions in a DNA molecule are carried in the form of a specific sequence of
A. hydrogen bonds.
B. sugars.
C. phosphate groups. D. nitrogen bases.
29. The major function of carbohydrates in living organisms is as a source of
A. nitrogen.
B. hydrogen.
C. information.
D. energy.
30. Complex carbohydrates are known as
A. disaccharides.
B. polysaccharides.
C. monosaccharides. D. simple sugars.
31. Starch, cellulose, and glycogen are all made from monomers of
A amylase.
B. sucrose.
C. lactose.
D. glucose.
32. An alcohol is an organic compound in which a hydrogen atom of a hydrocarbon has been replaced by
A. a hydroxyl group.
B. an oxygen atom.
C. an NH2 group.
D. a COOH group.
33. Which of the following suffixes is used in naming alcohols?
A. -al
B. -oic
C. -ol
D. -ane
34. The alcohol produced commercially in largest quantity is
A. methanol.
B. isopropyl.
C. ether.
D. ethanol.
B. ionic.
C. very slightly polar. D. moderately polar.
35. Alcohol molecules are generally
A. nonpolar.
36. The alcohol produced by yeasts is
A. methanol.
B. ethanol.
C. isopropanol.
D. cyclohexanol.
B. ethanol.
C. isopropanol.
D. butanol.
37. The simplest alcohol is
A. methanol.
38. What is the molecular formula of benzene?
A. C6H6
B. C6H12
C. C6H14
39. Which of the following is the best way to represent the structure of benzene?
4|Page
D. C12H12
40. Which of the following is an substituted hydrocarbon
2020- 2019 ‫العام الدراسي‬
A. methanol.
B. methane
C. propane
‫وزارة التربية والتعليم‬
‫الحلقة الثالثة‬- ‫مدرسة االتحاد‬
D. butane
For each item in Column A, write the letter of the matching item in Column B.
Column A
(……………) 1 . An organic molecule that has an amino functional
group and a carboxyl functional group
Column B
a. denaturation
(……………) 2. A chain of two or more amino acids linked together
(……………) 3. The process in which a protein’s natural three
dimensional structure is disrupted
b. protein
c. peptide bond
(……………) 4 An organic polymer made of many amino acids linked
together in a specific way
d. amino acid
(……………)5. The amide bond that joins two amino acids
e. peptide
1. Name the process shown below………………………………………..
2. In this process fractions are separated based on which physical property?
…………………………………………………………………………………………………………..
3. Name the fractions and uses
……………………………………………
…………………………………………..
…………………………………………….
……………………………………………..
5|Page
2020- 2019 ‫العام الدراسي‬
‫وزارة التربية والتعليم‬
……………………………………………..
‫الحلقة الثالثة‬- ‫مدرسة االتحاد‬
…………………………………………………
For each item in Column A, write the letter of the matching item in Column B.
Column A (Polymer)
(……………) 1 Polyethylene
Column B (Uses)
a. fabric, rope
(……………) 2. Polypropylene
b. pipes, hoses, house siding
(……………) 3. Polystyrene
c. foam, waterproof coatings, shoe parts
(……………) 4 Polyurethane
d. foam packing , disposable food
containers , CD cases
(……………)5. Polyvinyl chloride
e.glues carpets high-performance outdoor
clothing
(……………) 6. Polyester
f. plastic bags, plastic bottles
In the space at the left, write the word or phrase in parentheses that correctly completes the statement.
1._________ (organic, inorganic) are most compounds that contain the element carbon.
2. Amino acids combine to form large organic polymers known as(protein, glucose) _________.
3. _________(DNA, Lipids) is the nucleic acid that contains your genetic information.
4. A(n) _________ (aromatic, organic) is a compound containing the benzene-ring structure.
5. Sugars and starches are part of the group of organic compounds called (carbohydrate, proteins)
_________.
6. Fats and oils are part of the group of organic compounds called (lipids, proteins) _________.
7. _________ (isomers, aromatic) are compounds with identical chemical formulas but different
structures.
8. ____________(Petroleum, Natural gas) is a mixture of alkanes, aromatic hydrocarbons, and organic
compounds containing sulfur or nitrogen atoms.
9. The boiling of petroleum and collection of its components is called (sedimentation, fractional
distillation)___________________
10. Ethanol combine with butanoic acid to form an ester complete the following
6|Page
‫وزارة التربية والتعليم‬
‫مدرسة االتحاد ‪-‬الحلقة الثالثة‬
‫…………………………………………………‬
‫‪‬‬
‫‪+‬‬
‫‪Ethanol‬‬
‫العام الدراسي ‪2020- 2019‬‬
‫‪Butanoic acid‬‬
‫‪7|Page‬‬