CHAPTER 4 : Carbon and Its Compounds

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GHS (RMSA) THORALAKKI, MALUR TALUK, KOLAR DISTRICT

Name of the Student : *

School : *

District : *

1) Ethane, with the molecular formula C₂H₆ has : *

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(a) 6 covalent bonds.

(b) 7 covalent bonds.

(d) 9 covalent bonds

2) Butanone is a four-carbon compound with the functional group : *

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(a) carboxylic acid

(b) aldehyde

(d) alcohol

3) While cooking, if the bottom of the vessel is getting blackened on the outside, it means that : *

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(a) the food is not cooked completely.

(b) the fuel is not burning completely.

(d) the fuel is burning completely

4) Which of the following hydrocarbons undergo addition reactions ? *

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(a) CH₄

(b) C₂H₆

(d) C₄H₁₀

5) Identify the homologous series from the following : *

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(a) CH₄, C₂H₆, C₃H₈, C₄H₁₀, .....

(b) C₂H₄, C₃H₆, C₄H₈, C₅H₁₀, ......

(d) CH₃OH, C₂H₅OH, C₃H₇OH, C₄H₉OH, .....

(E) All the above

6) Carbon exists in the atmosphere in the form of : *

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(a) carbon monoxide only

(b) carbon monoxide in traces and carbon dioxide

(d) coal

7) Which of the following statements are usually correct for carbon compounds? These (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 *

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(a) (i) and (iii)

(b) (ii) and (iii)

(d) (ii) and (iv)

8) A molecule of ammonia (NH3) has : *

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(a) only single bonds

(b) only double bonds

(d) two double bonds and one single bond

9) Buckminsterfullerene is an allotropic form of : *

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(a) phosphorus

(b) sulphur

(d) oxygen

10) Which of the following are correct structural isomers of butane? *

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(a) (i) and (iii)

(b) (ii) and (iv)

(d) (iii) and (iv)

11) In the given reaction, alkaline KMnO₄ acts as : *

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(a) reducing agent

(b) oxidising agent

(d) dehydrating agent

12) Oils on treating with hydrogen in the presence of palladium or nickel catalyst form fats. This is an example of : *

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(a) Addition reaction

(b) Substitution reaction

(d) Oxidation reaction

13) In which of the following compounds, — OH is the functional group? *

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(a) Butanone

(b) Butanol

(d) Butanal

14) The soap molecule has a : *

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(a) hydrophilic head and a hydrophobic tail

(b) hydrophobic head and a hydrophilic tail

(d) hydrophilic head and a hydrophilic tail

15) Which of the following is the correct representation of electron dot structure of nitrogen? *

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(a)

(b)

(c)

(d)

16) Structural formula of Ethyne is : *

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(a) H– C≡ C– H

(b) H3 – C≡ C – H

(c)

(d)

17) Identify the unsaturated compounds from the following : *

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(a) Propane

(b) Chloropropane

(d) Propene

18) Chlorine reacts with saturated hydrocarbons at room temperature in the : *

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(a) absence of sunlight

(b) presence of sunlight

(d) presence of hydrochloric acid

19) In the soap micelles : *

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(a) the ionic end of soap is on the surface of the cluster while the carbon chain is in the interior of the cluster

(b) ionic end of soap is in the interior of the cluster and the carbon chain is out of the cluster.

(d) both ionic end and carbon chain are on the exterior of the cluster

20) Structural formula of benzene is : *

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(a)

(b)

(c)

(d)

21) After the formation of four bonds, carbon attains the electronic configuration of : *

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(a) helium

(b) neon

(d) krypton

22) Which of the following does not belong to the same homologous series? *

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(a) CH₄

(b) C₂ H₆

(d) C₄ H₈

23) The name of the compound CH₃—CH₂—CHO is: *

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(a) Propanal

(b) Propanone

(d) Propanol

24) The first member of alkyne homologous series is : *

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(a) ethyne

(b) ethene

(d) methane

25) Carbon form bonds with other atoms of carbon, giving rise to large molecules. This property is called : *

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(a) Tetravalency

(b) Catenation

(d) Hydrogenation

26) Identify the functional group : *

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(a) Ketone

(b) Carboxylic acid

(d) Aldehyde

27) Identify the functional group : *

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(a) Ketone

(b) Carboxylic acid

(d) Aldehyde

28) Identify the given compound : *

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(a) Chloro butane

(b) Propanechlorine

(d) Isobutane

29) Identify the given compound : *

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(a) Bromo butane

(b) Propanebromine

(d) Isobutane

30) Identify the given compound : *

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(a) Propanal

(b) Propanol

(d) Propanone

31) Identify the given compound : *

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(a) Propanal

(b) Propanol

(d) Propanone

32) Identify the given compound : *

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(a) Propanal

(b) Propanol

(d) Propanone

33) Identify the given compound : *

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(a) Propanal

(b) Propanol

(d) Propanone

34) Identify the Hydrocarbon : *

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(a) Butane

(b) Butyne

(d) Butene

35) General Formula of Alkene series is : *

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(a)

(b)

(c)

(d)

36) The following reaction is an example for : *

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(a) Combustion

(b) Oxidation

(d) Substitution Reaction

Electron dot structure of Methane (CH4) :

Electron dot structure of Ethane (C2H6) :

Electron dot structure of Ethene (C2H4) :

Electron dot structure of Hydrogen Molecule (H2) :

Electron dot structure of Oxygen Molecule (O2) :

Electron dot structure of Nitrogen Molecule (N2) :

GOPALA RAO C K

GHS (RMSA) THORALAKKI, MALUR TALUK, KOLAR DISTRICT 563137

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