# Free Class 10 Science Chapter 9 Carbon Compounds questions answers

We offer free Maharashtra Board Class 10 Science Chapter 9 Carbon Compounds questions answers in Pdf format. Our expert team have gone through this chapter and prepared Notes for the students who are facing difficulties in summarizing of this chapter. We assure you that you can score more marks by using our Pdf files. Let us tell you that all the questions answers in concern with this chapter are prepared by our expert teachers team. Here you will find three Pdf files, among them first Pdf files consists of Textbook Questions Answers whereas in second Pdf files you will get the additional extra questions for practices. In the third and last Pdf files, you will get full exercise of this chapter.

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## Class 10 Science Chapter 9 Carbon Compounds questions answers in Pdf format:

Here is what you all are waiting for. Teachers, parents and student, now you will find below the Solutions of Class 10 Science Chapter 9 Carbon Compounds questions answersFrom the subject English of Maharashtra State Board.

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## Class 10 Science Chapter 9 Carbon Compounds: Notes

As we go through the entire Class 10 Science Chapter 8 Metallurgy, we can see there are so many questions asked meanwhile and students are expected to answers them. Some students may face some problem while answering it , but we promise you that after reviewing our answer, you will gain the confidence to answers such questions. Our expert team teacher have divided the solutions into several parts,which will help you to understand this chapter better. Have a look at the following parts:

• Carbon Compounds (Can you recall?)
• Carbon Compounds (Use your brain power)
• Carbon Compounds (Observe/Discuss:)
• Carbon Compounds (Let’s Discuss:)
• Carbon Compounds (Observe:)
• Carbon Compounds (Let’s think:)
• Carbon Compounds (Paragraph based questions:)
• Carbon Compounds (Questions based on tables and charts:)
• Carbon Compounds (Activity based questions:)
• Carbon Compounds (Projects:)

## Class 10 Science Chapter 9 Carbon Compounds: Question Bank

All those students who are preparing for the final exam and want to score more marks on board can refer to our question bank, among them are some questions may ask you in your final examination.

Beneath, in our Pdf documents, you get the Class 10 Science Chapter 9 Carbon Compounds questions answers, however our expert crew have faith in the query bank that allows you to help the students to get more marks.
Our expert team of teachers has prepared the best solutions to these questions. All the answers to these questions are given in our PDF file, which is given below. You can download it for your later study. In Our Pdf file of solutions of the Chapter 9 Carbon Compounds, you will find the solutions of Important Question bank given below.

#### Important Questions Bank

Fill in the blanks and rewrite the completed statements:
Question 1. The organic compounds having double or triple bonds in them are termed as …………
Question 2. The general formula of alkane is ……………
Question 3. The compounds of homologous series have the same ………….. group.
Question 4. A double bond is formed between carbon atoms by ………… pairs of electrons.
Question 5. The compounds having different structural formulae having the same molecular formula is called ……….
Question 6. The functional group of ether is …………..
Question 7. The general formula of alkene is …………
Question 8. The bond between two atoms of nitrogen is a ………… bond.
Question 9. Benzene ring is made up of ………….. carbon atoms.
Question 10. Due to …………., vegetable oil is converted into vanaspati ghee.
Question 11. ………….. control the heredity at molecular level.
Question 12. The regular repetition of a small unit is called …………..
Question 13. The structural formula of polypropylene is ……………….
Question 14. The monomers of proteins are ……………..

Question 15. The monomer of cellulose is …………

Question 16. …………. have sweet odour.

Choose the correct alternative and rewrite the statement:
Question 1. The property of direct bonding between atoms of the same element to form a chain is called ………..
(a) catenation
(b) isomerism
(c) dehydration
(d) polymerization

Question 2. The molecular weight of two adjacent members in homologous series of an alkane differ by ………. units.
(a) 16
(b) 20
(c) 14
(d) 12

Question 3. Consecutive members of a homologous series differ by ………. group.
(a) -CH
(b) -CH2
(C) -CH3
(d) -CH4

Question 4. ……….. is used to prepare carbon black.
(a) Methane
(b) Ethene
(c) Propane
(d) Butane

Question 5. ……….. is the general formula of alkene.
(a) CnH2n
(b) CnH2n + 2
(c) CnH2n – 2
(d) CnHn – 2

Question 6. The reaction of methane with chlorine in the presence of sunlight is called ………..
(a) pyrolysis
(b) an elimination reaction
(c) a substitution reaction

Question 7. The general formula for alkynes is ………….
(a) CnH2n
(b) CnH2n + 2
(c) CnH2n – 2
(d) CnH2n – 1

Question 8. The reaction of ………… with ethanol is a fast reaction.
(a) calcium
(b) magnesium
(c) sodium
(d) aluminum

Question 9. Ethylene has …………. bond between two carbon atoms.
(a) a single
(b) a double
(c) a triple
(d) an ionic

Question 10. The saturated hydrocarbons are those in which carbon atom are linked by ………….
(a) a single bond
(b) a double bond
(c) a triple bond
(d) an ionic bond

Question 11. C7H16 is ………….
(a) hexane
(b) octane
(c) methane
(d) heptane

Question 12.
(a) carboxylic acid group
(b) aldehyde group
(c) ketonic group
(d) alcohol group

Question 13. The possible isomers for C5H12 are ……………
(a) 2
(b) 4
(c) 1
(d) 3

Question 14. ………. contains alcoholic functional group.
Question 15. Oxygen molecule has ………… bond between two oxygen atoms.

(a) a double
(b) a single
(c) a triple
(d) an ionic

Question 16. Some acetic acid is treated with solid NaHCO3. The resulting solution will be ………..
(a) colourless
(b) blue
(c) green
(d) yellow

Question 17. Ethanoic acid has a ……… odour.
(a) rotten eggs
(b) pungent
(c) mild
(d) vinegar-like

Question 18. Acetic acid ………..
(a) turns red litmus blue
(b) has pungent odour
(c) is red in colour
(d) is odourless

Question 19. When acetic acid reacts with sodium metal ……….. gas is formed.
(a) oxygen
(b) hydrogen
(c) chlorine
(d) nitrogen

Question 20. The molecular formula of acetic acid (ethanoic acid) is …………
(a) HCOOH
(b) CH3COOH
(c) C2H5COOH
(d) C3H7COOH

Question 21. When sodium bicarbonate solution is added to dilute acetic acid …………
(a) a gas is evolved
(b) a solid settles at the bottom
(c) the mixture becomes warm
(d) the colour of the mixture becomes yellow

Question 22. 2 ml of ethanoic acid was taken in each of test tubes A, B, C and 2 ml, 4 ml, 6 ml of water was added respectively to them. A clear solution is obtained in ………..
(a) test tube A
(b) test tube B
(c) test tube C
(d) all the test tubes

Question 23. In the presence of acid catalyst, ethanoic acid reacts with ethanol and ……….. ester is produced.
(a) ethanol
(b) ethanoic
(c) ethyl ethanoate
(d) ethyl ethanol (Practice Activity Sheet – 1)

Question 24. The following structural formula belongs to which carbon compound?
(a) Camphor
(b) Benzene
(c) Starch
(d) Glucose (Practical activity sheet- 2)

Question 25. What type of reaction is shown below?

$$\mathrm{CH}_{4}+\mathrm{Cl}_{2} \stackrel{\text { Sunlight }}{\longrightarrow} \mathrm{CH}_{3}-\mathrm{Cl}+\mathrm{HCl}$$
(b) Substitution
(c) Decomposition
(d) Reduction (Practice Activity Sheet – 3)

Question 26. The carbon compound is used in daily life is ………..
(a) edible oil
(b) salt
(c) carbon dioxide
(d) baking soda (March 2019)

State whether the following statements are true or false. (If a statement is false, correct it and rewrite it.):
Question 1. Generally the melting and boiling points of carbon compounds are high
Question 2. Till now the number of known carbon compounds is about 10 million.
Question 3. Unsaturated hydrocarbons are less reactive than saturated hydrocarbons.
Question 4. Benzene is an aromatic compound.
Question 5. The carbon-carbon double and triple bonds are also recognised as functional groups.
Question 6. The general formula of alkyne is CnH2n.

Question 7. Naphthalene burns with a yellow flame.
Question 8. When vegetable oil and tincture iodine react, the color of iodine does not change.
Question 9.\ Saturated fats are healthy.
Question 10. Aqueous solution of ethanol is found to be neutral.
Question 11. Denatured ethanol is used as industrial solvent.
Question 12. Vinegar is a 12-15 % aqueous solution of acetic acid.
Question 13. The functional group of ethanoic acid is a carboxylic group.
Question 14. Sodium hydroxide is used in the preparation of soap from fats and oils.
Question 15. Rubber is a manmade macromolecule.
Question 16. Polyvinyl chloride is used in the manufacture of P.V.C. pipes and bags.
Question 17. Polyethylene is a homopolymer.
Question 18. The chemical bonds in carbon compounds do not produce ions.

Find the odd one out:
Question 1. Propane, methane, ethene, pentane
Question 2. Methane, butane, benzene, sodium chloride
Question 3. CH4, C2H6, C3H8, CaCO3
Question 4. C2H2, C3H8, C2H6, CH4
Question 5. C2H4, C4H10, C3H8, CH4
Question 6. Polyethylene, Polysaccharide, Polystyrene, Polypropylene
Question 7. -NH2, -COOH,-SO4, -Br
Question 8. Methane, Ethane, Propene, Propane, Butane
Question 1. The higher homologue of hexane.
Question 2. The number of double bonds in benzene.
Question 3. The functional group in ether and halogen.
Question 4. Polymer of tetrafluoroethylene.
Question 5. The monomer of polysaccharide.
Question 6. The Polymer of nucleotide.
Question 7. The Monomer of rubber

Question 8. Two oxidising compounds.
Question 9. IUPAC name of sodium acetate.
Question 10. The main component of natural gas.
Question 11. Two isomers of butane.
Question 12. A nomenclature system based on the structure of the compounds and it was accepted all over the world.

Answer the following questions in one sentence each:
Question 1. State the atomic number and electronic configuration of carbon.
Question 2. State number of electrons in the outermost orbit of carbon and valency of carbon.
Question 3. What are hydrocarbons? Give one example.
Question 4. What is the molecular formula and structural of methane?
Question 5. How many atoms of carbon and hydrogen are present in methane?
Question 6. State the general formula of alkane.
Question 7. Give two examples of alkanes.
Question 8. Give two examples of alkenes.
Question 9. Give two examples of alkynes.
Question 10. Write the name and molecular formula of a higher homologue of propane.
Question 11. Write the structure and molecular formula of ethane.
Question 12. What is meant by catenation power?

Question 13. State the structural and molecular formula of benzene.
Question 14. Which functional groups are present in aldehyde and ketone?
Question 15. Which functional group is present in
Question 16. Compare: The proportions of carbon atoms in ethanol (C2H5OH) and naphthalene (C10H8).
Question 17. What are the products of combustion of methane?
Question 18. Which gas is evolved when ethanol reacts with sodium?
Question 19. Compare: How is the transformation of ethanol into ethanoic acid on oxidation reaction?
Question 20. Complete the following.
Question 21. Which of the following hydrocarbons undergo addition reactions:
C2H6, C3H8, C2H4, C3H8?
Question 22. How many covalent bonds are there in a molecule of cyclohexane?
Question 23. Give the IUPAC name for CH3COOH.
Question 24. Write the IUPAC name of CH3COONa.
Question 25. What is meant by denatured alcohol?
Question 26. What is meant by glacial acetic acid ?
Question 27. Which useful components of hydro¬carbon are obtained by fractional distillation of crude oil?
Question 28. Which functional groups are present in ester and amine?
Question 29. Give two examples of natural macromolecules.
Question 30. Write the structure of polystyrene and give its uses.
Question 31. Write the name and the structure of monomer of polyacrylonitrile.
Question 32. Write the name and the structure of monomer of teflon and its uses.

Question 33. What is meant by copolymers?