Quiz-1 Carbon and its compounds

Carbon and its compounds-1

Quiz

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1. Which of the following statements are correct for carbon compounds?
   (i) Most carbon compounds are good conductors of electricity.
   (ii) Most carbon compounds are poor conductors of electricity.
   (iii) Force of attraction between molecules of carbon compounds is not very strong.
   (iv) Force of attraction between molecules of carbon compounds is very strong.
   1.   (ii) and (iv)
   2.   (ii) and (iii)
   3.   (i) and (iv)
   4.   (i) and (iii)
2. C3H8 belongs to the homologous series of
   1.   Alkynes
   2.   Alkenes
   3.   Alkanes
   4.   Cyclo alkanes
3. The number of isomers of pentane is
   1.   2
   2.   3
   3.   4
   4.   5
4. Which of the following will undergo addition reactions?
   1.   CH4
   2.   C3H8
   3.   C2H6
   4.   C2H4
5. When ethanoic acid is treated with NaHCO3 the gas evolved is
   1.   H2
   2.   CO2
   3.   CH4
   4.   CO
6. Name the functional group present in CH3COOH.
   1.   Alcohol
   2.   Carboxylic acid
   3.   Ketone
   4.   Aldehyde
7. Name the functional group present in CH3COCH3.
   1.   Alcohol
   2.   Carboxylic acid
   3.   Ketone
   4.   Aldehyde
8. Why does carbon form compounds mainly by covalent bonding?
   1.   There are four electrons in the outermost shell of carbon.
   2.   It requires large amount of energy to form C4+ or C4-.
   3.   It shares its valence electrons to complete its octet.
   4.   All the above
9. Addition reactions are undergone by
   1.   saturated hydrocarbons (alkanes)
   2.   only alkenes
   3.   only alkynes
   4.   both alkenes and alkynes
10. The first member of the alkyne homologous series is
    1.   propyne
    2.   ethyne
    3.   methane
    4.   ethene
11. In diamond, each carbon atom is bonded to four other carbon atoms to form
    1.   a hexagonal array
    2.   a rigid three-dimensional structure
    3.   a structure in the shape of a football
    4.   a structure of a ring
12. Cation is formed when:
    1.   Atom gains electrons
    2.   Atom loses electrons
    3.   Proton is lost by the atom
    4.   Atom shares electrons
13. The property of self-linkage among identical atoms to form long chain compounds is known as:
    1.   Catenation
    2.   Isomerisation
    3.   Superposition
    4.   Halogenation
14. Which of the following statements about graphite and diamond is true?
    1.   They have the same crystal structure
    2.   They have the same degree of hardness
    3.   They have the same electrical conductivity
    4.   They can undergo the same chemical reactions
15. How many number of carbon atoms are joined in a spherical molecule of buckminsterfullerene?
    1.   30
    2.   60
    3.   90
    4.   120
16. 1.   30
    2.   60
    3.   90
    4.   120
17. Which of the followings is the major constituent of the liquefied petroleum gas?
    1.   Methane
    2.   Ethane
    3.   Propane
    4.   Butane
18. From which of the following substance pencil lead is formed?
    1.   Charcoal
    2.   Wood
    3.   Lead
    4.   Graphite
19. Ester is formed by the reaction between:
    1.   An acid and an alcohol
    2.   An acid and a base
    3.   A base and an alcohol
    4.   An acid and an alkene
20. What is denatured alcohol?
    1.   Ethyl alcohol which has been made unfit for drinking purpose by adding small amount of poisonous substance
    2.   Methyl alcohol which has been made unfit for drinking purpose by adding small amount of poisonous substance
    3.   Alcohol having properties of an acid
    4.   Ethyl alcohol containing 60% of water by weight
21. Which of the following substance produces brisk effervescence with baking soda solution?
    1.   Ethanoic acid
    2.   Table salt
    3.   formaldehyde
    4.   Sunflower oil
22. Which of the following statements is true about carbon?
    1.   Carbon is the main component of carbohydrates.
    2.   Carbon is a major component of living beings.
    3.   Carbon is one of the basic building blocks for organic life
    4.   All of the above