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Twelfth Grade (Grade 12) Organic Chemistry Questions

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Grade 12 Organic Chemistry
Grade 12 Organic Chemistry
Complete the following chemical reaction:

[math]H - C -= C - H + Cl_2 rarr[/math]
  1. [math]Cl-CH-CH-Cl[/math]
  2. [math]Cl-CH_2-CH_2-Cl[/math]
  3. [math]Cl-C-=C-Cl[/math]
  4. [math](Cl)_2-CH_2[/math]
Grade 12 Organic Chemistry
What is the product of the following chemical reaction?

[math]CH_2=CH_2 + HBr rarr[/math]
  1. [math]CH_3-CH_2-Br[/math]
  2. [math]CH_3-CH=CH-Br[/math]
  3. [math]CH_2=CH-Br[/math]
  4. [math]CH_3-CH=CH-CH_2-Br[/math]
Grade 12 Organic Chemistry
Grade 12 Organic Chemistry
What is the IUPAC name of the following compound

[math]CH-=C-CH_2-C-=CH[/math]
  1. Pent-2,4-diyne
  2. Pent-1,4-diyne
  3. Pent-1,3-diyne
  4. Pent-1,2-diyne
Grade 12 Organic Chemistry
What are the products of the following chemical reaction?

[math](Br)_2-CH-CH-(Br)_2 +2Zn (alcoholic) rarr[/math]
  1. [math]H-C-=C-H + 2ZnBr_2[/math]
  2. [math]H_2C=CH_2 + ZnBr_2[/math]
  3. [math]H-C-=C-H + ZnBr_2[/math]
  4. [math]H_2C=CH-CH_3 + ZnBr[/math]
Grade 12 Organic Chemistry
A student named an alkane as 2-ethyl propane. The correct IUPAC name of the alkane is
  1. 2-Methylbutane
  2. 2,2-Dimethylbutane
  3. 2,3-Dimethylbutane
  4. 2,3-Dimethylpentane
Grade 12 Organic Chemistry
Which of the following conversions is an example of substitution reaction?
  1. Acetylene [math]rarr[/math] Ethane
  2. Sodium acetate [math]rarr[/math] Methane
  3. Propylene [math]rarr[/math] Propane
  4. Ethane [math]rarr[/math] Chloroethane
Grade 12 Organic Chemistry
Which of the following is not a form of carbon?
  1. straight carbon chain
  2. branched carbon chain
  3. carbon ring
  4. pyrite
Grade 12 Organic Chemistry
Which of the following is aliphatic saturated hydrocarbon?
  1. [math]C_6H_6[/math]
  2. [math]C_6H_10[/math]
  3. [math]C_6H_12[/math]
  4. [math]C_6H_14[/math]
Grade 12 Organic Chemistry
Which of the following isomers is associated with difference in carbon chain length?
  1. Structural isomerism
  2. Cis isomerism
  3. Trans isomerism
  4. Geometrical isomerism
Grade 12 Organic Chemistry
Grade 12 Organic Chemistry
Which of the following chemical formulas correctly represents a molecule of 1-propyne?
  1. [math] CH_3 CH_2 CH_3 [/math]
  2. [math] CH C CH_3 [/math]
  3. [math] CH_2 CH CH_3 [/math]
  4. [math] CHCH [/math]
Grade 12 Organic Chemistry
Grade 12 Organic Chemistry
The abbreviation PVC is short for what type of plastic?
  1. Polyethylene
  2. Polyvinyl Chloride
  3. Polyvinyl Acetate
  4. Polystyrene
Grade 12 Organic Chemistry
Which of the following functional groups acts as a deactivating, meta group on benzene rings?
  1. [math]-NO_2 group[/math]
  2. [math]-NH_2 group[/math]
  3. [math]-C_6H_5 group[/math]
  4. [math]-OH group[/math]
Grade 12 Organic Chemistry
Which of the following alkanes contains [math](CH_3)_2CH-[/math] group?
  1. 2, 2-Dimethylpentane
  2. 3,3-Dimethylpentane
  3. 2,3-Dimethylpentane
  4. 3,4-Dimethylhexane
Grade 12 Organic Chemistry
What temperature and pressure conditions are required to carry out the polymerization of ethylene?
  1. Temperature (463 K to 483 K) and Pressure (1500 atm.)
  2. Temperature (450 K to 480 K) and Pressure (1200 atm.)
  3. Temperature (400 K to 430 K) and Pressure (1300 atm.)
  4. Temperature (420 K to 440 K) and Pressure (1600 atm.)
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