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Twelfth Grade (Grade 12) Organic Chemistry Questions

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Grade 12 Organic Chemistry
A student named an alkane 2-ethylpropane. 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
What would be the IUPAC name of the following compound?

CH3-CH=CH-CH3
  1. But-2-ene
  2. But-1-ene
  3. Pent-1-ene
  4. Pent-2-ene
Grade 12 Organic Chemistry
What is the IUPAC name of CH3-CH2-CH3?
  1. Propane
  2. Ethane
  3. Methane
  4. Butane
Grade 12 Organic Chemistry
What would be the IUPAC name of the following compound?

CH≡C-CH2-C≡CH
  1. Pent-2,4-diyne
  2. Pent-1,4-diyne
  3. Pent-1,3-diyne
  4. Pent-1,2-diyne
Grade 12 Organic Chemistry
Which of the following conversions is an example of a substitution reaction?
  1. Acetylene → Ethane
  2. Sodium acetate → Methane
  3. Propylene → Propane
  4. Ethane → Chloroethane
Grade 12 Organic Chemistry
Which of the following is an aliphatic saturated hydrocarbon?
  1. C6H6
  2. C6H10
  3. C6H12
  4. C6H14
Grade 12 Organic Chemistry
Which of the following chemical formulas correctly represents a molecule of 1-propyne?
  1. CH3CH2CH3
  2. CHCCH3
  3. CH2CHCH3
  4. CHCH
Grade 12 Organic Chemistry
Which of the following alkanes contains a (CH3)2CH- group?
  1. 2, 2-Dimethylpentane
  2. 3,3-Dimethylpentane
  3. 2,3-Dimethylpentane
  4. 3,4-Dimethylhexane
Grade 12 Organic Chemistry
An alkane is obtained by decarboxylation of sodium propionate. The same alkane can be obtained by
  1. catalytic hydrogenation of propene.
  2. action of sodium metal on iodomethane.
  3. reduction of 1-chloropropane.
  4. reduction of bromomethane.
Grade 12 Organic Chemistry
Which of the following alkanes is a liquid at room temperature?
  1. C4H10
  2. C10H22
  3. C22H46
  4. C46H94
Grade 12 Organic Chemistry
Which of the following alkanes cannot be prepared by the Wurtz reaction?
  1. methane
  2. ethane
  3. propane
  4. butane
Grade 12 Organic Chemistry
Which of the following must react with an alkyne to generate a cis alkene?
  1. lithium
  2. ammonia
  3. a Lindlar catalyst
  4. bromine
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.)
Grade 12 Organic Chemistry
What is polyethylene terephthalate also known as?
  1. HDPE
  2. PVC
  3. PET
  4. LDPE
Grade 12 Organic Chemistry
Which of the following reagents is used to carry out the oxidation of 2-Butene to acetic acid?
  1. acidic KMnO4
  2. Raney Ni
  3. alkaline KMnO4
  4. conc. H2SO4
Grade 12 Organic Chemistry
Which of the following can be added to help oxidize an alkene to glycols?
  1. KMnO4
  2. H2SO4
  3. HCl
  4. Raney Ni
Grade 12 Organic Chemistry
Which compound is formed when vapors of phenol are passed over heated zinc?
  1. Benzene
  2. Toluene
  3. Naphthalene
  4. Aniline
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