MCQ Organic Chemistry for ICSE Class-10 Sec-A Sem-2

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MCQ Organic Chemistry for ICSE Class-10 Sec-A Sem-2 . These MCQ  / Objective Type Questions is based on latest reduced syllabus according 2021-22 session on bifurcated pattern. Main motto of MCQ Type Question is cracking the next upcoming Sem-2 exam of council. Visit official website CISCE for detail information about ICSE Board Class-10 Chemistry .

MCQ Organic Chemistry Class-10 for ICSE Class-10 Sec-A Sem-2

Board ICSE
Class 10th (X)
Subject Chemistry
Chapter Organic Chemistry
Syllabus  on bifurcated syllabus (after reduction)
Session 2021-22
Bifurcated Sem-2
Topic MCQ / Objective Type Question for Sec-A

Sec-A Sem-2 ICSE Class-10 MCQ Type Questions of Organic Chemistry

1 IUPAC name of following structure is 
2, 2-demethyl butane

1  2-ethyl-2-methyl propane
2  2, 2-demethyl butane
3. 1,1,1-trimethyl propane
4.  2, 2-methyl butane

Answer -2, 2-demethyl butane

2. . Identify ‘A’ in the following reaction:
CH3COOH + Na2CO3 → A + CO2 + H0O
1 CH3COONa
2 CH2(Na)COOH
3 NaOH
4 NaHCO3

Answer-CH3COONa
3. The number of covalent bonds in C5H12 is:
  1. 15
  2. 16
  3. 17
  4. 18
Answer : 16 
4. Which amongst the following does not conduct electricity:
  1. CH3COOH
  2. C3H7OH
  3. HCOOH
  4. NaCl(aq)

Answer : C3H7OH

5. C3H8 belongs to the homologous series of

  1. Alkynes
  2. Alkenes
  3. Alkanes
  4. Cyclo alkanes

Answer : Alkanes

6. Carbon exists in the atmosphere in the form of

  1. carbon monoxide only
  2. carbon monoxide in traces and carbon dioxide
  3. carbon dioxide only
  4. coal

Answer :  carbon monoxide in traces and carbon dioxide

7. Which of the following will undergo addition reactions?

  1. CH4
  2.  C3H8
  3. C2H6
  4. C2H47.

Answer :  C2H47. 

8. When ethanoic acid is treated with NaHCO2 the gas evolved is

  1. H2
  2. CO2
  3. CH4
  4. CO

Answer :  CO2

9. Ethanol on complete oxidation gives

  1. acetic acid/ethanoic acid
  2. CO2 and water
  3. ethanal
  4. acetone/ethanone

Answer : CO2 and water

10. Methane reacts with one mole of Chlorine in presence of sunlight to give _________.
The reaction is called_______.
  1. Chloromethane, substitution
  2. Dichloromethane, addition
  3. Trichloromethane, elimination
  4. Tetra chloro methane, combustion
Answer : Chloromethane, substitution
11. Catenation is maximum in:
  1. Carbon
  2. Oxygen
  3. Sulphur
  4. Phosphorous
Answer : Carbon
12. Ethane and ethene can be distinguished by using:
  1. Bromine water
  2. Chlorine water
  3. I2
  4. HCl
Answer : Bromine water
13. The number of isomers of C6H14 are
  1.  4
  2.  5
  3.  6
  4.  7

Answer : 6

14. 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 C4sup>4-.
  3. It shares its valence electrons to complete its octet.
  4. All the above.

Answer : All the above.

15. Addition reactions are undergone by

  1. saturated hydrocarbons (alkanes)
  2. only alkenes
  3. only alkynes
  4. both alkenes and alkynes

Answer : both alkenes and alkynes

16. Identify ‘A’ in the following reaction:

CH3COOH + Na2CO3 → A + CO2 + H0O

  1. CH3COONa
  2.  CH2(Na)COOH
  3. NaOH
  4. NaHCO3

Answer : CH3COONa

17. Which of the following belongs to homologous series of alkynes?

C6H6, C2H6, C2H4, C3H4.

  1. C6H6
  2. C2H4
  3. C2H6
  4. C3H4

Answer : C3H4

18. 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)

Answer : (ii) and (iii)

19. Which of the following is known as Zero calorie sugar?

  1. Aspartame
  2. Cyclamate
  3. Sucralose
  4. Dulcin

Answer : Sucralose

20. Which of the following polymer is used to make Bullet proof glass?

  1. Glyptal
  2. PMMA
  3. Teflon
  4. None

Answer  : PMMA

21. Which acid is the building block of protein molecules?

  1. Fatty acids
  2. Amino acids
  3. Formic acids
  4. Acetic acids

Answer  : Amino acids

22. Give the IUPAC name of CH3COOC2H5.

  1. Ethyl ethanoic acid
  2. Butanoate
  3. Ethyl ethanoate
  4. Etyl methyl carboxylic acid

Answer  : Ethyl ethanoate

23. The firSt member of the alkyne homologous series is

  1. propyne
  2. ethyne
  3. methane
  4. ethene

Answer  : ethyne

24. 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

Answer  : a rigid three-dimensional structure

25. Which of the following are members of the same homologous series:
  1. CH4 and C2H4
  2. CH3OH and CH3Cl
  3. C2H5OH and C3H7OH
  4. CH3OCH3 and C2H5OH
Answer : C2H5OH and C3H7OH
26. The difference in the molecular formula and molecular mass of CH4 and C2H6 is:
  1. CH3 and 12u
  2. CH2 and 12u
  3. CH3 and 14u
  4. CH2 and 14u
Answer : CH2 and 14u
27. Which of the following statements about diamond and graphite is true?
  1. They have same crystal structure
  2. They have same degree of hardness
  3. They have same electrical conductivity
  4. They have same chemical properties.
Answer : They have same chemical properties.
28. Graphite is good conductor of electricity due to the
  1. presence of hexagonal rings
  2. presence of ions
  3. presence van der waal forces
  4.  presence of free electron
Answer : presence of free electron
 

29. The difference in the formula and molecular masses of CH3OH and C2H5OH is

  1. CH3 and 16u
  2. CH2 and 14u
  3. CH4 and 18u
  4. CH3 and 16u

Answer :  CH2 and 14u

30. 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

Answer : They can undergo the same chemical reactions

31. Which type of rubber Ebonite is?

  1. Natural Rubber
  2. Synthetic rubber
  3. Highly vulcanized rubber
  4. None

Answer : Highly vulcanized rubber

32. Who among the following is considered as the father of organic chemistry?

  1. Friedrich Wohler
  2. P C Ray
  3. Antoine-Laurent de Lavoisier
  4. None of the above

Answer : Friedrich Wohler

33. Which of the following polymer is thermosetting polymer?

  1. Terylene
  2. Polystyrene
  3. Bakelite
  4. Neoprene

Answer : Bakelite

34. The gas used for making vegetable oil is

  1. Oxygen
  2. Carbon dioxide
  3. Hydrogen
  4. Nitrogen

Answer : Hydrogen

35. The chemical formula of Urea is ________.

  1. (NH4)2CO2
  2. (NH2)CO
  3. (NH4)2CO
  4. NH2CONH2

Answer : NH2CONH2

36. Identify the ‘product’ in the reaction CH3COOH + C2H5OH → conce.H2SO4  Product + H2O
  1. alcohol
  2. aldehyde
  3. ketone
  4. ester
Answer : ester
37. Identify the ‘product’ in the reaction CH3COOH → LiAIH4 ‘product’ + H2O
  1. aldehyde
  2. alcohol
  3. ketone
  4. acid
Answer : aldehyde 
38. The ‘product’ in the reaction CH3CH2OH 350ºC → Al2O3 ‘product’ + H2O is
  1. alkane
  2. alkene
  3. alkyne
  4. none of these
Answer : alkene 
39. On adding NaHCO3 to acetic acid, a gas is evolved which turns lime water milky due to the formation of:
  1. Calcium Carbonate
  2. Calcium Hydroxide
  3. Calcium bicarbonate
  4. Calcium Acetate
Answer : Calcium Carbonate
40. Which among the following contains triple bond:
  1. C2H4
  2. C2H2
  3. C3H4
  4. C2H6
Answer : C2H2

–: End of Organic Chemistry MCQ Type Question for Sec-A  :-

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