10th Class Chemistry Chapter 8 TestORGANIC CHEMISTRY

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

1. Hydrocarbons containing at least one double or triple bond are called:

   1. Saturated hydrocarbons

   2. Unsaturated hydrocarbons

   3. Alkanes

   4. Monosaccharides

2. The part of the IUPAC name that indicates the presence of a substituent group attached to the parent chain is:

   1. Root

   2. Suffix

   3. Prefix

   4. Bond

3. While showing the arrangement of atoms in a molecule, it is usual to omit most of the:

   1. Double bonds

   2. Triple bonds

   3. Single covalent bonds

   4. Functional groups

4. Compounds having the same molecular formula but different structural formulae are called:

   1. Isotopes

   2. Isomers

   3. Allotropes

   4. Homologs

5. In a ketonic functional group, the carbonyl carbon must be attached to:

   1. Two hydrogen atoms

   2. One hydrogen and one alkyl group

   3. A hydroxyl group

   4. Two alkyl groups

6. What is the IUPAC name of Methyl Alcohol?

   1. Ethanol

   2. Propanol

   3. Methanol

   4. Butanol

7. The IUPAC name of Propionic acid is:

   1. Ethanoic acid

   2. Pentanoic acid

   3. Butanoic acid

   4. Propanoic acid

8. What is the molecular/structural formula of Acetaldehyde?

   1. H – CHO

   2. CH₃ – CHO

   3. CH₃ – CO – CH₃

   4. CH₃ – COOH

9. Organic compounds containing carbon and hydrogen only are called:

   1. Carbohydrates

   2. Halogens

   3. Hydrocarbons

   4. Oxides

10. What is the alternative name for Methyl ethanoate?

    1. Methyl acetate

    2. Ethyl acetate

    3. Methyl amine

    4. Formamide