In this article, you are provided Carbon and its Compounds extra questions, which is a very important chapter of NCERT Science Class 10. You should prepare notes yourself and practice them well. Before you solve these extra questions, you must go through NCERT Solutions for Class 10 Science Chapter Fourth which will be very helpful to understand the concept.
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| Carbon and its Compounds Extra Questions |
Carbon and its Compounds Extra Questions
Carbon and its Compounds extra questions consist of properties of carbon, its allotropes like- diamond, graphite, fullerene, ethanol, ethanoic acid, detergent, and soap, their preparation, and differences in their properties
If you find any difficulty in finding answers to Ch 4 Science Class 10 Extra Questions, then go through NCERT solutions of class 10 science or you can comment in the comment section, we will be very pleased to help you.
Carbon and its Compounds Extra Questions
CHAPTER – 4- CARBON AND ITS COMPOUNDS
1. Give electron dot structures of the following –
i. Carbon dioxide
ii. Ammonia
iii. O2
iv. H2
v. Cyclopentane
2. What is allotropy?
3. What are the main allotropes of carbon? Describe
their properties.
4. What is a covalent bond?
5. Why could carbon not gain or lose electrons to
attain Nobel gas configuration?
6. Give melting points and boiling points of the following compounds-
i. Acetic acid
ii. Chloroform
iii. Ethanol
iv. Methane
7. What are the two characteristic features of
carbon?
8. Why does carbon form so many compounds?
Explain.
9. What are hydrocarbons?
10. What do you mean by saturated and unsaturated
hydrocarbons?
11. What are structural isomers? How many
structural isomers of pentane are possible, draw them?
12. Write the formula, structural formula of the following compounds
i. Ethane
ii .Propene
iii. Butyne
iv. Pentanone
v. Hexanol
vi.Heptanoic acid
vii. butanal
13. Write the name of the following compounds-
i. C3H8
ii. C5H8
iii. C4H6
14. Define the following with example-
i. Combustion
ii. Oxidation
iii. Addition reaction
iv. Substitution
15. Bottoms of the cooking utensils get blackened,
why?
16. What is hydrogenation? Give an example.
17. Why is the conversion of ethanol to ethanoic
acid an oxidation reaction?
18. What are the uses of alcohol? Write the chemical reaction of alcohol (ethanol) with the following-
i.Sodium
ii. Dehydration or conversion into unsaturated hydrocarbon (Imp.)
19. Why acetic acid is called glacial acetic acid?
20. What is vinegar?
21. Write the reactions of ethanoic acid ( acetic acid)-
i.Esterification
ii. With a base
iii. With sodium carbonate
iv. With sodium hydrogen carbonate
22. Write the uses of esters?
23.What is saponification? Write the reaction also.
24. How alcohol affects living beings?
25. Explain the mechanism of the cleaning action
of soap?
Or
Describe the formation of micelles
26. What is homologous series? Explain with an
example.
27. What is absolute alcohol?
28. What do you mean by oxidizing agents?
29. What is
a catalyst?
30. In what form is carbon found in the earth's
crust?
31. Why can carbon not lose four electrons to gain a noble gas electron configuration?
32. Why can carbon not gain four electrons to gain a noble gas electron configuration?
33. Why do covalent compounds have low melting
points and boiling points?
34. How does a carbon atom complete its octet or
noble gas electronic configuration?
35. Give the difference between diamond and graphite.
36. Diamond and graphite are formed by carbon but
they are different to each other, why?
37. Define
i. Catenation
ii. Tetra valency
38. Why does carbon form a strong bond with other
atoms?
39. What are saturated hydrocarbons?
40What are unsaturated hydrocarbons?
41. Give the electron dot structure of cyclopentane.
42. Give electron dot structure of benzene. Write
the formula also.
43. What is a functional group?
44. What is homologous series?
45. What happens when molecular mass increases in
any homologous series?
46. What physical properties of homologous series
show gradation or change when molecular mass increases?
47. Which property remains the same in members of the homologous series?
48. What is the molecular mass of the following
i. C3 OH
ii. C2H5 OH
49. Write the general formula of the following –
i. Alkane
ii. Alkene
iii. Alkyne
50. What are the differences between two adjacent
members of the homologous series?
51. Match the following-
A B
1. CnH2n i.alkanes
2. Saturated
hydrocarbon ii. oxidizing agents
3. Vegetable oil iii. esters
4. H2SO4 iv. alkenes
5. Sweet smelling
substance v.unsaturated
hydrocarbons
6. 100% pure
alcohol vi.dehydrating agents
7. Diamond vii. absolute alcohol
8. Alkaline KmnO4 viii. allotrope of carbon
52. Write the chemical reaction for –
i. Burning of methane
ii. Burning of ethyl alcohol
53. Why is there an inlet for air in the gas/ kerosene
stove?
54. Why do bottoms of cooking vessels get
blackened?
55. Why does the combustion of coal and petroleum
cause pollution?
56. Write full form of IUPAC.
57. How are coal and petroleum formed?
58. When a sooty flame or smoke is formed on the combustion
of the fuel?
59. How is flame formed?
60. What is oxidizing agents?
61. Write the reaction of oxidation of alcohol.
62. Name the oxidizing agents used in the oxidation of
alcohol.
63. What is a catalyst? Name any catalyst.
64. Name the reaction by which unsaturated
hydrocarbon is converted to saturated hydrocarbon.
65. Name the catalyst used in the hydrogenation of
vegetable oil.
66. What is the medicinal use of alcohol?
67. Why is it said that vegetable oil is good for
health?
68. Why are M.P. and B.P. of covalent compounds low?
69.What is the difference between two consecutive members of homologous series in terms of –
i. molar mass
70. write the structural formula of the following
i. C2H2 ii. C3 H8
71. Give electron dot structure of following -
i. C2H2 ii. C3 H8
72. Why is some substance burnt with flame?
73. Why do some substances like coal burn without
flame?
74. Write the bad effects of alcohol on human
beings?
75. Write the reaction of dehydration of alcohol.
76. Name the substance used for making perfumes.
77. Why does acetic acid freeze in cold?
78. Which plants are efficient converters of
sunlight into chemical energy?
79. Name the process by which molasses change into
alcohol?
80. Name the substance which is used as a preservative in pickles.
81. What are soaps?
82. What are detergents?
83. What are the two ends of soap?
84. What do you mean by the hydrophilic end and
hydrophobic end?
85. In what form are micelle present in the solution?
86. Why do micelles not come together to
precipitate?
87. Why a soap solution does appear cloudy?
88. Name the ions present in hard water?
89. What are the uses of detergents?
90. How many covalent bonds are present in the following-
i. C3H8
ii. C5H8
iiiC4H6
91. Give the name of the functional group present in the following compounds-
i. Ethanal
ii. Butanoic acid
iiiPantenol
92. What is esterification? give its method of
preparation and write the related chemical equation. .[ Annual board exam-2012]
93. Write the full name of CNG and give the electron dot
formula of its main components. .[ Annual board exam-2012]
94. According to the assumption of Newlands, what
is the total number of elements in nature? -[ Annual board exam-2013]
95. Write the balanced equation of combustion of
methane. -[ Annual board exam-2013]
96.
i. write the structural formula of acetic acid-[ Annual board exam-2013]
ii. Write the electron dot structure of ethane
iii. Explain odd atom by an example
iv. Select unsaturated hydrocarbon in C2H6 C3H4, C3H8, and C2H4
97. Write a difference between soap and detergents.
Or
Explain the following
with example--[Annual board exam-2013]
i. Saturated hydrocarbon
ii. Denaturation of alcohol
iii. Displacement reaction
iv. Combustion of hydrocarbon
v. Hydrogenation of unsaturated hydrocarbon
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