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Punjab (PTB) · Chapter test · Free

2nd Year Chemistry Chapter 3 TestBASICS OF ORGANIC CHEMISTRY

30 marks · 40 minutes · 21 questions. Covers: CHAP 19: BASICS OF ORGANIC CHEMISTRY.

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2nd Year Chemistry Chapter 3 Test

2nd Year · Chemistry · Punjab (PTB)

Name: ____________Roll No: ________Class/Section: ________Date: ________Total marks: 30Time: 40 minutes

Q1. Multiple choice questions (Attempt all · 10 × 1 = 10)

  1. Chirality is also commonly referred to as:

    1. Handedness

    2. Polarity

    3. Isomerism

    4. Symmetry

  2. Which of the following compounds has no functional group?

    1. Methanol

    2. Carboxylic acid

    3. Cycloalkane

    4. Glucose

  3. What type of light has a single wavelength and vibrates only in one plane?

    1. Monochromatic light

    2. Polychromatic light

    3. Ultraviolet light

    4. Infrared light

  4. What is the pathway adopted by a chemical reaction showing bond breaking and making called?

    1. Mechanism

    2. Kinetics

    3. Energetics

    4. Resonance

  5. Which instrument is used to identify and measure the optical activity of a compound?

    1. Spectrometer

    2. Barometer

    3. Polarimeter

    4. Chromatograph

  6. Which feature is critical to determine the safety and efficacy of synthetic pharmaceutical products?

    1. Solubility

    2. Molecular weight

    3. Melting point

    4. Chirality

  7. What are the two main types of reaction mechanisms?

    1. Addition and elimination

    2. Substitution and addition

    3. Free radical and ionic

    4. Oxidation and reduction

  8. If a molecule contains more than one chiral atom, it:

    1. May or may not be achiral and active

    2. May or may not be symmetric and inactive

    3. May or may not be asymmetric and active

    4. May or may not be symmetric and active

  9. "Bond order" in a functional group refers to the:

    1. Arrangement of atoms

    2. Total molecular mass

    3. Number of bonds

    4. Polar strength

  10. Elimination reactions are explicitly regarded as the reverse of:

    1. Rearrangement reactions

    2. Substitution reactions

    3. Addition reactions

    4. Decomposition reactions

Q2. Short questions (Attempt any 6 of 8 · 6 × 2 = 12)

  1. Draw the structure of the following: 3-methylpentanal

  2. What is thalidomide?

  3. Define free radicals with examples.

  4. What are isomers? Define isomerism.

  5. Deduce the empirical and molecular formulae of the following compound: 

  6. Write down the IUPAC name of nitroalkanes with its functional group.

  7. Draw the structure of the following: 2-methylbutanal

  8. Write down the IUPAC name of esters with its functional group.

Q3. Long questions (Attempt any 2 of 3 · 2 × 4 = 8)

  1. Classify hydrocarbons on the basis of their carbon skeleton.

  2. What is a functional group? Explain the factors that determine the types of organic compounds. Also discuss the effect of functional groups on the physical properties of organic compounds.

  3. Describe the different types of formulae used to represent organic molecules.