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Class 10

Explore popular questions from Carbon and Its Compounds for Class 10. This collection covers Carbon and Its Compounds previous year Class 10 questions hand picked by experienced teachers.

Carbon and Its Compounds

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Q 1. In order to form branching, an organic compound must have a minimum of:

four carbon atoms

B

three carbon atoms

C

five carbon atoms

D

any number of carbon atoms

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Q 2. The number of Sigma bond and Pi bond present in Acetylene (CH {tex}\equiv {/tex} CH) is :

A

1,2

3,2

C

2,3

D

1,4

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Q 3. Alcohols can be produced by the hydration of:

alkenes

B

alkynes

C

alkanes

D

acids

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Q 4. IUPAC name of first member of homologous series of ketones is :

A

ethanone

B

methanone

propanone

D

butanone

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Q 5. Enzyme which converts starch into glucose is :

Zymase

B

Maltase

C

Diastase

D

Invertase

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Q 6. Rectified spirit is :

A

50 percent ethanol

B

80 percent ethanol

95 percent ethanol

D

100 percent ethanol

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Q 7. Soaps are formed by the saponification of:

A

alcohols

B

simple ester

carboxylic acids

D

glycerides

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Q 8. An example of soap is:

A

{tex}\mathrm{C_{15}H_{31}COONa}{/tex}

B

{tex}\mathrm{CH_3COONa}{/tex}

{tex}\mathrm{C_6H_5COONa}{/tex}

D

{tex}\mathrm{C_{17}H_{35}OSO_3Na}{/tex}

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Q 9. A covalent bond is formed when:

combining atoms share the electron pairs

B

combining atoms are attracted by each other

C

the ions of the combining atoms are attracted by electrostatic force of attraction

D

one atom donates a pair of electrons to another atom

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Q 10. Which of the following compound is covalent ?

{tex}\mathrm{H_2}{/tex}

B

{tex}\mathrm{KCl}{/tex}

C

{tex}\mathrm{BaC_2}{/tex}

D

{tex}\mathrm{Na_2S}{/tex}

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Q 11. Aldehydes show with each other

A

chain isomers

B

position isomers

C

Functional isomers

Both (A) & (C)

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Q 12. {tex}\mathrm{Assertion}{/tex}: Carbon form long chain compound.
{tex}\mathrm{Reason}{/tex}: Its covalency is four.

A

Both Assertion and Reason are true and Reason is the correct explanation of 'Assertion'

Both Assertion and Reason are true and Reason is not the correct explanation of 'Assertion'

C

Assertion is true but Reason is false

D

Assertion is false but Reason is true

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Q 13. {tex}\mathrm{Assertion}{/tex}: Unsaturated hydrocarbon give addition reaction.
{tex}\mathrm{Reason}{/tex}: They have pi-bond.

Both Assertion and Reason are true and Reason is the correct explanation of 'Assertion'

B

Both Assertion and Reason are true and Reason is not the correct explanation of 'Assertion'

C

Assertion is true but Reason is false

D

Assertion is false but Reason is true

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Q 14. {tex}\mathrm{Assertion}{/tex}: Methane, ethane and propane are said to form a homalogous series.
{tex}\mathrm{Reason}{/tex}: They all are hydrocarbons.

A

Both Assertion and Reason are true and Reason is the correct explanation of 'Assertion'

Both Assertion and Reason are true and Reason is not the correct explanation of 'Assertion'

C

Assertion is true but Reason is false

D

Assertion is false but Reason is true

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Q 15.

Column IColumn II
(A) Alkane(P) {tex}\mathrm{C_{12}H_{24}}{/tex}
(B) Alkene(Q) {tex}\mathrm{C_{8}H_{14}}{/tex}
(C) Alkyne(R) {tex}\mathrm{C_{8}H_{17}OH}{/tex}
(D) Alcohol(S) {tex}\mathrm{C_{16}H_{34}}{/tex}

A

A - Q

B - P

C

C - S

D

D - S

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Q 16. The IUPAC name of: {tex}\mathrm{CH_3 - C(CH_3)(OH)CH_2 - CH(CH_3)CH_3}{/tex} is -

2,4-dimethyl pentane-2-ol

B

2,4-dimethyl pentane-4-ol

C

2,2-dimethyl butane

D

butanol-2-one

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Q 17. The maximum number of carbon atoms arranged linearly in the molecule: {tex}\mathrm{CH_3-C + C-CH= CH_2}{/tex} is

A

5

B

4

C

3

2

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Q 18. The reaction of {tex}\mathrm{C_2H_5OH + 2Na\equiv 2C_2H_5ONa + H_2}{/tex} suggests that ethanol is :

Acidic in nature

B

Basic

C

Neutral

D

Amphoteric

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Q 19. Glacial acetic acid is a -

frozen acetic acid

B

5-8% of solution of acetic acid in water

C

mixture of acetic acid and alcohol

D

None of these

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Q 20. Which is not a carbon compound -

A

wood

B

cooking gas

C

paper

cement

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Q 21. Which is not a property of graphite -

It melts at 800°C

B

It is a smooth crystallined form of carbon

C

It is a good conductor of electricity

D

It forms a black sign on paper

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Q 22. Which of the following is the purest form of carbon -

A

Charcoal

B

Coal

Diamond

D

Graphite

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Q 23. Alkynes have in their molecule -

A

Four hydrogen atoms more than in a molecule of corresponding alkane

Two hydrogen atoms less than in a molecule of corresponding alkene

C

Two hydrogen atoms less than in a molecule of corresponding alkane

D

Two hydrogen atoms less than in a molecule of corresponding alkene

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Q 24. The fruity smell is of a/an -

A

aldehyde

B

ketone

C

alcohol

ester

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Q 25. Which of these contains the carbonyl group?

A

Ketones

B

Aldehydes

C

Esters

All of these