Carbon and its compounds Worksheet-11

Carbon and its compounds Worksheet-11

Fill in the blanks:

  1. Carbon compounds usually have _____ melting and boiling points.  

  2. Graphite is comparatively soft substance due to its _____ structure. 

  3. The IUPAC name of given Structure is ______ CH3 – CH2 – CH = CH2

  4. ______ is the name of first member of homologous series of compounds of general formula CnH2nO2

  5. The number of carbon atoms in di-propyl ketone is ____.

  6. ______ burn in air with blue flame.

 

Multiple-Choice Question:

  1. The compound with a formula C3H6O2 is :

(A) Alcohol          (B) Acid                (C) Aldehyde       (D) Ketone

 

  1. The 9th member of the homologous series of carboxylic acids is:

(A) C9H19COOH                                 (B) C8H17COOH

(C) C7H15COOH3                               (D) None of these

 

  1. The IUPAC name of first member of homologous series of ketone is:

(A) Methanone   (B) Ethanone       (C) Propanone     (D) Butanone

 

  1. The IUPAC name of the given compound is:

(A) 3,3-dimethyl butane                 (B) 2,2-dimethyl butane

(C) 2-ethyl, 2-methyl propane       (D) Hexane

 

  1. The IUPAC name of the given compound is:

(A) Heptyne                                      (B) Heptene

(C) Octyne                                        (D) Octane

  1. The structural formula of pentanal is:

(A)                    (B)

(C)                            (D)

 

  1. Bromine water is decolorized by cooking oil but not by butter because:

(A) Cooking is saturated, butter is unsaturated

(B) Cooking oil is unsaturated, butter is saturated

(C) Butter also decolorizes bromine water of slightly higher temperature

(D) None of these

 

  1. The IUPAC name of the given compound is:

(A) Benzene                                      (B) Hexane

(C) Cyclohexane                               (D) Cyclopentane

 

Answer key:

  1. Low

  2. Sheet-like/Sheet like

  3. But – 1 – ene or butane

  4. Formic acid or Methanoic acid

  5. 7/ seven

  6. Alkanes/ Alkane

  7. (B)

  8. (B)

  9. (C)

  10. (B)

  11. (C)

  12. (D)

  13. (B)

  14. (C)

  15. (C)