Chemistry Class 10th English Medium Chapter 11 Organic Chemistry Notes MCQs Questions Bank

chemistry 10th notes Chapter No 11

1. Name the gas which is not found in coal gas:


2. Which test is used for the detection of aldehyde group in a compound?


3. Functional group – OH is found in:


4. Alkyl Radical is represented as:


5. Which one of the following compounds is an aldehyde?


6. A benzene ring is made of carbon atoms:


7. Formula which represents the actual number of atoms in one molecule of organic compound is:


8. Main component of natural gas is:


9. Hydrogen atoms present in pentane care:


10. C₅H₁₂ is the molecular formula of:


11. Petroleum is refined by:


12. How many carbons are present in Heptanes?


13. CH₃-O-CH₃ is called:


14. Another name for acetone is:


15. Pitch is black residue of:


16. Number of isomers increases with increase in number of atoms:


17. Functional group containing – NH₂ are called:


18. The capability of carbon atom to form chain is known as


  l   l   l   l
  l   l   l   l
is a:


20. It is used to make the following except:


21. Which of the following is not an aromatic compound?


22. Which one is used as reducing agent:


23. Which one provide inert atmosphere in metallurgy process?


24. Amount of carbon content in lignite is:


25. In laboratory urea was prepared by:


26. The characteristic properties of carboxylic acids are due to the presence of ________ group in them.


27. Functional group containing carbon, hydrogen and halogens are:


28. Which type of coal is used as house hold coal: 


29. How many types of formula of organic compound:


30. The organic compounds that contain at least one benzene ring in their molecule are called ______ compounds.


31. The molecular formula of pentane is:


32. It represents group of atoms joined together to each carbon atom:


33. The ability of carbon atoms to form chains is called


34. Which compound is an alkyne?                                             


35. The basic unit of carbohydrates is:


36. Which one contains triple bond?


37. When one hydrogen atom is removed from alkanes it gives:   


38. Thiophene is an example of ______ compounds.


39. Organic compounds have:


40. Molecular formula of a hydrocarbon is C₈H₁₄. The molecular formula of next member of the same homologous series is:


41. Perfumes contain:


42. The formula of acetylene is:


43. Dead plants produce all of these products except:


44. The general formula of alcohols is:


45. Vitamins are found in:


46. Coal tar is a mixture of more than organic compounds:


47. Inorganic compounds are obtained from:


48. Coal having 90 percent carbon contents is called:


49. Which of the following compounds is an aldehyde? 


50. Cyclohexane is a/an ______ compound.


51. Which one of the following does not contain protein:


52. Identify the ketone from following:


53. Natural gas is used to make:..


54. The formula of octane is:


55. Esters are recognized by their:


56. Alkanes are also called:


57. The general formula of alkyl radical is:


58. Which of the following is not an isomer of n-pentane?


59. Which one of the following is a synthetic fibre?


60. Which one is soft coal:


61. Which one contains double bond?


62. Which one of the following statements is not true about fossil fuels?


63. Which of the following are derived From alkanes :


64. Which of the following is not an organic compound?


65. Paraffins means:


66. Which one is main source of organic compound?


67. The functional group –COOH is found in:


68. Homologous series have same:


69. The general formula of alkynes is:


70. Which one of the following is not a fossil fuel?


71. Which of the following is an aldehyde?


72. The formula of decane is:                                                      


73. Formula of acetaldehyde is:


74. Organic compounds consisting of RCOOR functional group are called:


75. Which one of the following is the hardest coal?


76. Coal gas is a mixture of:


77. Identify which one compounds is a ketone:


78. Coal consists of_ types:


79. Functional group C-O-C is found in:


80. Carbonization process is the conversion WI


81. The vital force theory suffered rejection in:


82. Conversion of dead plants into coal by the action of bacteria


83. The chemical formula of octane is:


84. The organic compounds having functional group containing carbon, hydrogen and halogens are called:


85. Organic compound consisting of “RCOOR” functional group is called:


86. The branch of Chemistry which deals with hydrocarbons and their derivatives are called:


87. In which of the following groups, oxygen is attached on both sides with carbon atom? 


88. Organic compounds are soluble in:


89. Condensed form of propane is:


90. C₄H₁₀ is the _______ formula of butane.


91. Which one of the following does not contain starch:


92. Geraniol consists of ___ functional group:


93. _______ formula represents group of atoms joined together to each carbon atom


94. C-C bond is stronger than


95. The main component of natural gas is:


96. The strong heating of coal in retorts in the absence of air is called


97. General formula of alkyl radical is:


98. The functional group of amines is:


99. The removal of terminal hydrogen from the straight chain of propane is called:


Short Questions

1. CNG stands for ….
2. Define alicyclic or non benzenoid compounds.
3. Define alkynes
4. Define ammonical liqueur and give its uses.
5. Define aromatic compounds.
6. Define Carbonization.
7. Define closed chain or cyclic compounds. Write names of their types.
8. Define condensed formula.
9. Define functional group with an example.
10. Define Homocyclic compounds. Give their types.
11. Define homologous series.
12. Define Isomerism. Give examples.
13. Define molecular formula. Give one example.
14. Define open chain or acyclic compounds. OR What are aliphatic compounds? Explain their types.
15. Define organic chemistry and organic Compounds.
16. Define organic chemistry.
17. Define petroleum.
18. Define structural formula and give structural formula of n-butane.
19. Define structural formula. Draw the structural formulae of n-butane and iso-butane.
20. Describe the difference between organic and inorganic compounds with reference to the melting and boiling points.
21. Describe the structure of benzene. Why is it called aromatic?
22. Describe uses of organic compounds as Medicines.
23. Differentiate between straight chain and branched chain organic compounds and give example of each.
24. Draw alkyl radicals of propane.
25. Explain different radicals of butane.
26. Explain the strength of covalent bonds of carbon.
27. Give a chemical reaction for complete and incomplete combustion of methane.
28. Give any two characteristics of homologous series.
29. Give identification test for aldehyde group.
30. Give the functional groups of alkenes and alkynes.
31. How animals are the sources of organic compounds?
32. How are alkyl radicals formed? Explain with examples.
33. How is a ketonic group tested?
34. How is an alcohol tested?
35. How is carboxylic group identified?
36. How is coal formed?
37. How would you define carboxylic acids with reference to functional group?
38. How would you identify the formula of alkenes?
39. Identify the functional groups in following compounds:
40. Is coal tar a compound? What is importance of coal tar?
41. Justify that organic compounds are used as food.
42. Name the gases which are found in coal gas.
43. Name the sources of organic compounds.
44. Our existence owes to organic compounds, comment.
45. Point out the properties of carbon which are responsible for formation of long chains of carbon atom compounds.
46. W rite two isomers of pentane.
47. What are alkanes? Give their general formula.
48. What are alkyl radicals? How are they formed?
49. What are amines? Give examples.
50. What are different types of formulae by which we can represent organic compounds?
51. What are heterocyclic compounds? Give two examples.
52. What are identification tests for Ketonic group?
53. What are isomers? Give example.
54. What are the reasons for the formation of millions of organic compounds?
55. What are two basic conditions for an element to exhibit catenation?
56. What is a functional group? 
57. What is a homologous series?
58. What is a molecular formula?
59. What is an Ester group? Write down the formula of methyl acetate and ethyl acetate.
60. What is bromine water test? Explain with an example.
61. What is coke? For what purpose it is used?
62. What is destructive distillation?
63. What is dot and cross formula?
64. What is Ether linkage?
65. What is functional group for aldehyde and ketone?
66. What is functional group for an alkyl Halide?
67. What is functional group for ether and carboxylic compounds?
68. What is meant by carboxyl functional group? Explain with example.
69. What is meant by coal tar? Write is uses.
70. What is meant by multiple bonding?
71. What is meant by the term catenation? Give an example of a compound that displays catenation.
72. What is natural gas?
73. What is Pitch? Write its use.
74. What is the basic unit of carbohydrates and how is it synthesized?
75. What is the difference between aldehydes and ketones?
76. What is the difference between homocyclic and heterocyclic compounds?
77. What is the difference between n-propyl and isopropyl? Explain with structure.
78. What is the functional group of an ester?
79. What is the importance of natural gas?
80. What is vital force theory? Who put it forward?
81. What types of compounds are synthesized by plants?
82. Which compounds are called Ketones?
83. Which is the best quality of coal?
84. Which raw materials are obtained from the organic compounds?
85. Who rejected the vital force theory and how?
86. Why and how carbon completes its octet?
87. Why are benzene and other homologous compounds of benzene called aromatic compounds?
88. Why are the melting and boiling points of organic compounds low?
89. Why are the organic compounds poor conductors of electricity?
90. Why carbon shows catenation but silicon does not?
91. Why organic compounds are useful for clothing?
92. Why the members of a homologous series have similar chemical properties? 
93. Write a short note on alcohols.
94. Write any two general properties of organic compounds.
95. Write classification of coal.            
96. Write condensed formula of any two hydrocarbons.
97. Write down the dot and cross formulae of propane and n-butane.
98. Write down the name of identification test for primary Amines.
99. Write down the name of tests for detection of double bond (unsaturation).
100. Write down the names of classes in which organic compounds are classified.
101. Write down the names of products obtained by destructive distillation of coal.
102. Write isomers of butane.
103. Write the name of any two types of aromatic compounds found in coal tar.
104. What are benzenoid compounds? Give an example.

Long Questions

1. Define functional groups and write down three functional groups in details.
2. Define isomerism. Give isomers of pentane.
3. Describe the tests for unsaturation of organic compounds.
4. Describe the tests to identify the carboxylic groups.
5. Explain acyclic compounds and cyclic compounds with examples.
6. Explain alkyl radicals.
7. Explain four types of formulae of organic compounds.
8. Explain the types of open chain hydrocarbons.
9. Give some uses of organic compounds in our daily life.
10. What are cyclic hydrocarbons? Give two examples.
11. What is catenation? Give examples.
12. Write down six characteristics properties of organic compounds.
13. Write down the composition and uses of different types of coal.

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