Here you can download free PDF MCQ Questions for Class 10 Science Chapter 4. Explanation of MCQ Questions for Class 10 Science Chapter 4 has been provided for your better preparation for CBSE class 10 board exams. These MCQ questions are completely based NCERT solutions for class 10 science chapter Fourth that is useful for you.
MCQ Questions for Class 10 Science Chapter 4
All MCQ Questions for Class 10 Science Chapter
4 have been prepared according to a new pattern of 10 Board Examinations and
completely based on NCERT Science book of class 10.
For detailed and thorough study you can
also check NCERT Solution of Class 10 Science.
MCQ
Questions for Class 10 Science Chapter 4
Choose
the correct answer:
1. The functional
group present in methanal is
(a) −OH
(b)−CHO
(c) > C = O
(d)−COOH
Correct answer –(b)
2. The functional group present in propanone is
(a) −OH
(b)−CHO
(c) > C = O
(d)−COOH
Correct answer –(c)
3. Chlorine molecule
is formed by a / an
(a) ionic bond
(b)single covalent bond
(c) double covalent bond
(d)triple covalent bond
Correct answer –(b)
Explanation- Each chlorine atom shares one
electron to form a single covalent bond.
4. Which covalent compound is soluble in water
(a) methane
(b)ethane
(c) chlorine
(d)sugar
Correct answer –(d)
5. N2 molecule is formed by a / an
(a) ionic bond
(b)single covalent bond
(c) double covalent bond
(d)triple covalent bond
Correct answer –(d)
Explanation- Each nitrogen atom shares
three electrons with another to form a triple covalent bond
6. Oxidation of ethanol with alkaline potassium permanganate;
produces
(a) CH3CHO
(b)CH3COOH
(c) CH3COCH3
(d)CH3COONa
Correct answer –(b)
Explanation- Acetic acid is formed after the oxidation of ethanol. There is an increase in oxygen in acetic acid.
7.The general
formula of alkane is
(a) CnH2n
(b) CnH2n+2
(c) CnH2n-2
(d) CnH2n-1
Correct answer –(b)
8. The hydrolysis of an ester in the presence of an alkali, is
called
(a) fermentation
(b)hydration
(c) esterification
(d)saponification
Correct answer –(d)
Explanation- In this reaction, soap is
formed so it is called saponification.
9. Which of the following compounds can have a triple bond?
(a)C4H6
(b)C3H6
(c) C3H4
(d) C3H8
Correct answer –(c)
Explanation- Propyne is an unsaturated
hydrocarbon that belongs to alkyne series in which triple bond is found
between two carbon atoms.
10. The reaction of an alcohol with a carboxylic acid in the presence
of H2SO4, is called
(a) fermentation
(b)hydration
(c) esterification
(d)saponification
Correct answer –(c)
Explanation- Formation of esters occurs in
the reaction of alcohol with carboxylic acid so it is called esterification.
11. Consumption of alcohol in large quantities may cause death by
damaging
(a) heart
(b)brain
(c) lungs
(d)liver
Correct answer –(d)
12. Between two atoms, the bond formed by sharing of electrons, is
(a) covalent bond
(b)hydrogen bond
(c) electrovalent bond
(d)co-ordinate bond
Correct answer –(a)
13. Which of the molecule has no double or triple covalent bond
(a) O2
(b)N2
(c) H2O
(d)CO2
Correct answer –(c)
14. Which compound is not soluble in water
(a) sodium bromide
(b)benzene
(c) calcium chloride
(d)sugar
Correct answer –(b)
Explanation- Benzene is an aromatic
hydrocarbon(organic compound). It is not soluble in water (polar solvent)
15. Which statement is correct about covalent compounds?
(a) they are good
conductors of electricity
(b)the are soluble in water
(c) the molecules from
ions in solution
(d)their melting points
are low
Correct answer –(d)
Explanation- Covalent compounds have a weak
bond between their atoms so they easily get melted.
16. Ethyl ethanoate is formed, by the action of
(a) methanol and
methanoic acid
(b)methanol and ethanoic acid
(c) ethanol and methanoic
acid
(d)ethanol and ethanoic acid
Correct answer –(d)
17. The functional group present in alcohol is
(a) −OH
(b)−CHO
(c) −COOH
(d)> C = O
Correct answer –(a)
18. Alcohols produce hydrogen gas with
(a) Zn
(b)Fe
(c) AI
(d)Na
Correct answer –(d)
19. The poisonous alcohol is
(a)Propanol
(b)Methanol
(c) Butanol
(d)Ethanol
Correct answer –(b)
20. Two adjacent members of the homologous series has a difference in
mass
(a) 4 u
(b)8 u
(c) 10 u
(d)14 u
Correct answer –(d)
21. When alcohols react with acidic potassium dichromate, they
change to
(a) alkanes
(b)aldehydes
(c) esters
(d)carboxylic acids
Correct answer –(d)
22. The functional group present in organic acids is
(a) −OH
(b)−CHO
(c) −COOH
(d)> C = O
Correct answer –(c)
23. When ethyl alcohol is heated with acetic acid, in the presence
of H2SO4 the product is
(a) aldehyde
(b)methyl acetate
(c) ethyl acetate
(d)acetic anhydride
Correct answer –(c)
24. Vegetable oils convert into vanaspati ghee by the process of
(a) hydrogenation
(b)halogenation
(c) catenation
(d)oxidation
Correct answer –(a)
Explanation- In hydrogenation, Hydrogen is
added to vegetable oils in the presence of a catalyst.
25. When ethanoic acid is added to sodium carbonate solution, gas
evolved is
(a) H2
(b)N2
(c) CO2
(d)O2
Correct answer –(c)
26. When chlorine gas reacts with methane in the presence of
sunlight which is not formed
(a) chloromethane
(b)methylene chloride
(c) chloroform
(d)acetyl chloride
Correct answer –(d)
27. A large number of carbon compounds are formed due to
(a) the property of
halogenation
(b)the property of catenation
(c) the property of nitration
(d)the property of hydration
Correct answer –(b)
28.n-pentane and
iso-pentane are
(a) two homologous of alkane series
(b)two isomers
(c) two isotopes
(d)two allotropes
Correct answer –(b)
29. Soaps are
(a)sodium salts of
sulphonic-acids containing carbon atoms 10 to 16
(b) sodium salts of fatty acids containing carbon atoms 16 to 18
(c) sodium salts of
trihydroxy alcohols
(d)none of the above
Correct answer –(b)
30. Detergents are sodium salts of
(a) unsaturated sulphonic
acids containing carbon atoms 10 to 16
(b)fatty acids containing carbon atoms 16 to 18
(c) trihydroxy alcohols
(d)none of the above
Correct answer –(a)
31. Detergents can lather well in
(a) soft water
(b) hard water
(c) river water
(d)all the above
Correct answer –(d)
32. Soaps can lather well in
(a) soft water
(b) hard water
(c) seawater
(d)all the above
Correct answer –(a)
33. In C6H14, the number of possible isomers
is
(a) 3
(b) 6
(c) 4
(d)5
Correct answer –(d)
34. Heating of kerosene-soaked sand, is an example of
(a) refining
(b) separation
(c) cracking
(d) purification
Correct answer –(c)
35. If a hydrocarbon has all single carbon-carbon bonds, it is
(a) alkyne
(b) alkane
(c) alkene
(d) all the above
Correct answer –(b)
36. If a hydrocarbon has any double bond, it is
(a) alkyne
(b) alkane
(c) alkene
(d)all the above
Correct answer –(c)
37. If a hydrocarbon has any triple-double bond, it is
(a) alkyne
(b) alkane
(c) alkene
(d) all the above
Correct answer –(a)
38. Sodium reacts with ethanol to form
(a) sodium ethanoate and
oxygen
(b) sodium methanoate and
oxygen
(c) sodium ethanoate and
hydrogen
(d) sodium methanoate and
hydrogen
Correct answer –(c)
39. Carbon forms four covalent bonds by sharing its four valence
electrons. In this way it gets the electronic configuration similar to
(a) He
(b) Ne
(c) Xe
(d) Re
Correct answer –(b)
40. Which among the
following are unsaturated hydrocarbons:
(i) CH3−CH2−CH2−CH2−CH3
(ii) CH3−CH−CH2−CH2−CH3
⃒
CH3
(iii) CH3−CH
≡ CH−CH2−CH3
(iv) CH3−CH2−C
≡ C−CH3
(a) (i) and (ii)
(b) (ii) and (iii)
(c) (iii) and (iv)
(d) (ii) and (iv)
Correct answer –(c)
Explanation- Hydrocarbons having double or
triple bonds with two carbon atoms are known as unsaturated hydrocarbons.
41. Molecular formula of butane is C4H10, it
has covalent bonds
(a) 10
(b) 14
(c) 11
(d) 13
Correct answer –(d)
42. NH3 has
(a) only single bond
(b) single and double bonds
(c) only double bonds
(d) single and triple bonds
Correct answer –(a)
43. In the reaction of ethanol with potassium permanganate, potassium
permanganate acts as
(a) reducing agent
(b) oxidising agent
(c) catalyst
(d) dehydrating agent
Correct answer –(b)
44. Vegetable oils are converted to vegetable ghee by the process of hydrogenation.
It is a/an
(a) addition reaction
(b) substitution reaction
(c) oxidation reaction
(d) decomposition reaction
Correct answer –(a)
Explanation- In this reaction, hydrogen is
added to vegetable oils.
45. The name of compound CH3−CH2−CHO is
(a) propanol
(b) propanal
(c) propanone
(d) ethanoic acid
Correct answer –(b)
46.Saponification
reaction is
H2SO4
(a) R−COOH + C2H5OH → R−COOC2H5+H2O
(b)2R−COOH + 2Na → 2R –COONa + H2
(c) R−COO C2H5 + NaOH → R−COONa + C2H5OH
Cao
(d)
R−COONa + NaOH →
R−H + Na2CO2
Correct answer –(c)
47. The soap molecule has a
(a) hydrophobic head and a hydrophilic tail
(b)hydrophobic head and a hydrophobic tail
(c) hydrophilic head and a hydrophilic tail
hydrophilic head and a hydrophilic tail
Correct answer –(c)
48. carbon exists in
the atmosphere in the form of
(a) carbon monoxide
(b) carbon monoxide in
traces and carbo dioxide
(c) coal
(d) carbon dioxide only
Correct answer –(d)
49. which of the following statements are correct for carbon compounds?
(i) Are good conductors of electricity
(ii) Are poor conductors of electricity
(iii) Have strong forces of attraction between their molecules
(iv) Do not have strong forces of attraction between their molecules
(a) (i) and (iii)
(b) (ii) and (iii)
(c) (i) and (iv)
(d) (ii) and (iv)
Correct answer –(d)
50. A molecule of
ammonia has
(a)only single bond
(b)only double bonds
( c) only triple bonds
(d)two double bonds and one single bond
Correct answer –(a)
51. Oils on treating with hydrogen in the presence of palladium of
nickel catalyst form fats, this is the example of
(a) Addition reaction
(b) Oxidation reaction
(c) Displacement
reaction
(d) Substitution reaction
Correct answer –(a)
52. Identify the unsaturated compounds from the following
(i) Propane
(ii) Propene
(iii) Propyne
(iv) Chloropropane
(a) (i) and (ii)
(b)(ii) and (iv)
(c) (iii) and (iv)
(d)(ii) and (iii)
Correct answer –(d)
53. Chlorine reacts with saturated hydrocarbons at room temperature
in the
(a) Absence of
sunlight
(b) Presence of water
(c)Presence of
sunlight
(d)Presence of hydrochloric acid
Correct answer –(c)
Carbon
and its Compounds fill in the blanks
Here you are provided with Important Class
10 Science
Carbon and its Compounds fill in the blanks
which are also very useful in the context of a new pattern of CBSE Class Board Exams 2021-22. You can prepare Multiple Choice
Questions using following fill in the blanks yourself.
Carbon and its Compounds fill in the blanks
1. By sharing of electrons between two atoms, a
................................ bound is formed.
2. carbon forms a large number of compounds
because of its c=property called………..
3. The atoms of the same elements combine to form a
molecule. The bond between them is known as ................................
bond.
4. The chlorine atoms combine to form a molecule.
The bond between them is known as ................................
5. difference between successive members of
homologous series is…………
6. The number of single covalent bonds in C2H2
molecule, is ................................
7................................. molecule has a
triple covalent bond.
8. Informing N2 molecule,
................................ electrons are shared by each atom of Nitrogen.
9. Hydrogen gets stable configuration by
completing its ................................
10. Covalent compounds have
................................ melting points.
11.C2H2 is a/an
................................ hydrocarbon.
12. C has a tendency to form long chains of C−C
bonds. This property is called ................................
13. The functional group present in ethanol is
................................
14. Ethanoic acid is prepared by the oxidation of
................................
15. An aqueous solution of ethanoic acid is known
as ................................
16. The organic acid present in vinegar is
................................
17. The fuel used in the spirit lamp is
................................
18. The general formula of alcohols is
................................
19. Sodium reacts with alcohols to give
................................
20. Methanol is ................................
21. On oxidation alcohols change to
................................
22. The functional group present in acids
is................................
23.CH3COOH is
................................ acid.
24. When organic acids react with alcohol in the
presence of H2SO4 ................................ are formed.
25. In methane, C forms
................................ C−H bonds.
26................................. compound
doesn’t form ions in solution.
27. Mostly the covalent compound is................................ in water.
28. Sugar and ................................ are
such covalent compounds that are soluble in water.
29. The esters of higher fatty acids are called
................................
30................................. are quite
effective in hard water also.
31. Detergents cause
................................ pollution.
32. Saturated hydrocarbons have ……………..bonds only.
33. C = C is a reactive site in
................................
34. Ethanol is an antiseptic and a
................................ substance.
35. carbon has ……………electrons in the valence
shell.
36.C2H5NH2 is
called ................................
37. covalent compound generally …………………..boiling
point gases.
38. the solution is called
................................
39. Aldehydes and ketones are carbon compounds
containing the................................ group.
40. The higher fatty acids with sodium or
potassium hydroxide form ................................
41. Detergents are sodium salts of
................................
42. The hydrocarbon tail in detergents is water
................................
43. The valency of carbon of
................................
44. Members of ................................
series has a difference of CH2 unit.
45. Addition reactions are given by
................................ hydrocarbons.
I hope this article is very helpful and
you can secure good marks in your Board exams. You can download Pdf free and to
better understand you can videos on the same topic on the YouTube channel.
- Chapter 3 Metals and Non-metals
- Chapter 5 Periodic Classification of Elements
- MCQ Questions for Class 10 Science Chemistry Chapter 3
- MCQ Questions for Class 10 Science Chemistry Chapter 5
- Carbon and its Compounds Extra Questions
you can download MCQ Questions for Class 10 Science Chemistry Chapter 4
.webp)
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