Class 10 Science 1 Chapter 9 Carbon Compounds Worksheet
Maharashtra SSC Board important questions, MCQs, structures, nomenclature, chemical reactions and previous exam questions
Class 10 Science 1 Carbon Compounds Worksheet
This Class 10 Science 1 Chapter 9 Carbon Compounds Worksheet is prepared according to the Maharashtra State Board Science and Technology Part 1 syllabus. It provides structured practice for school examinations, unit tests, preliminary examinations and the Maharashtra SSC Board examination.
The worksheet contains Maharashtra State Board exam important questions, MCQs, one-word answers, electron-dot structures, scientific reasons, short-answer questions, long-answer questions, nomenclature activities and chemical equations. Selected previous board exam questions are also included with their examination-year labels. Students can use it as an SSC question bank for complete chapter revision.
Questions cover covalent bonding, tetravalency, catenation, saturated and unsaturated hydrocarbons, structural isomerism, functional groups, homologous series and nomenclature. Students also practise important reactions such as combustion, oxidation, addition and substitution reactions.
SSC Board Questions
Practise Maharashtra Board questions involving explanations, structures, equations, comparisons and real-life applications.
Nomenclature Practice
Identify the carbon chain, type of bond and functional group before writing the correct name of a compound.
Answer Key
Check structures, scientific terms, reactions and written explanations after completing the worksheet independently.
What Is Included in the Worksheet?
- Multiple-choice questions with properly arranged options
- Fill in the blanks and one-word answers
- Odd-one-out and matching-pair questions
- Electron-dot structure questions
- Structural formulae of carbon compounds
- Saturated and unsaturated hydrocarbon questions
- Functional-group identification
- Homologous-series questions
- IUPAC nomenclature practice
- Chemical reactions and equation-based questions
- Maharashtra SSC Board important questions
- Selected previous board exam questions with year labels
- Answer key for checking completed work
Important Carbon Compounds Concepts
1. Covalent Bonding
Carbon has four electrons in its outermost shell. It cannot easily lose or gain four electrons because both processes require a large amount of energy. Carbon therefore completes its outer shell by sharing electrons with other atoms. A bond formed through the mutual sharing of electrons is called a covalent bond.
2. Tetravalency and Catenation
Carbon is tetravalent because it can form four covalent bonds. Catenation is the ability of carbon atoms to bond with one another. Due to catenation, carbon forms long chains, branched chains and ring-shaped compounds.
3. Saturated and Unsaturated Hydrocarbons
| Hydrocarbon | Type of Bond | Example |
|---|---|---|
| Saturated hydrocarbon | Only single carbon-carbon bonds | Ethane, C₂H₆ |
| Unsaturated hydrocarbon | At least one double or triple bond | Ethene, C₂H₄ or Ethyne, C₂H₂ |
Alkanes are saturated hydrocarbons. Alkenes contain at least one carbon-carbon double bond, while alkynes contain at least one carbon-carbon triple bond.
4. Structural Isomerism
Compounds with the same molecular formula but different structural formulae are called structural isomers. Their atoms are joined in different arrangements even though the number of each type of atom is the same.
5. Functional Groups
A functional group is an atom or group of atoms that gives a carbon compound its characteristic chemical properties.
| Functional Group | Representation | Example |
|---|---|---|
| Alcohol | –OH | Ethanol |
| Aldehyde | –CHO | Ethanal |
| Ketone | >C=O | Propanone |
| Carboxylic acid | –COOH | Ethanoic acid |
| Halogen | –Cl, –Br or –I | Chloroethane |
6. Homologous Series
A homologous series is a group of organic compounds having the same functional group and similar chemical properties. Two consecutive members differ by a –CH₂– unit and by 14 u in their molecular masses.
Important Chemical Reactions
Combustion Reaction
Carbon compounds burn in oxygen and generally produce carbon dioxide, water, heat and light. A sufficient supply of oxygen produces clean combustion. An insufficient oxygen supply may produce carbon monoxide and soot.
Oxidation Reaction
Alcohols can be oxidised to produce carboxylic acids in the presence of suitable oxidising agents. For example, ethanol is oxidised to ethanoic acid.
Addition Reaction
Unsaturated hydrocarbons undergo addition reactions. Hydrogen is added across the double or triple bond in the presence of a suitable catalyst.
Substitution Reaction
Saturated hydrocarbons generally undergo substitution reactions. In the presence of sunlight, one or more hydrogen atoms can be replaced by halogen atoms.
Steps for Naming a Carbon Compound
- Find the longest continuous carbon chain.
- Count the number of carbon atoms in the chain.
- Identify whether the bonds are single, double or triple.
- Identify the functional group.
- Number the chain from the end nearest the functional group or multiple bond.
- Select the correct prefix, word root and suffix.
- Recheck the structure and position number before writing the final name.
Common Mistakes Students Should Avoid
- Writing that carbon normally forms ionic bonds
- Confusing tetravalency with catenation
- Calling an alkene a saturated hydrocarbon
- Ignoring double or triple bonds during nomenclature
- Confusing molecular formula with structural formula
- Forgetting that consecutive homologues differ by –CH₂–
- Writing an unbalanced chemical equation
Check the Complete Carbon Compounds Solutions
Use the detailed Chapter 9 solutions to check your worksheet answers and revise covalent bonding, hydrocarbons, functional groups, nomenclature and chemical reactions.
View Chapter 9 Carbon Compounds SolutionsFrequently Asked Questions
Why does carbon mainly form covalent bonds?
Carbon has four valence electrons. Losing or gaining four electrons requires a large amount of energy. It therefore completes its outermost shell by sharing electrons and forming covalent bonds.
Why can carbon form such a large number of compounds?
Carbon is tetravalent and shows catenation. It forms four stable covalent bonds and joins with other carbon atoms to produce straight chains, branched chains and rings.
What is the difference between saturated and unsaturated hydrocarbons?
Saturated hydrocarbons contain only single carbon-carbon bonds. Unsaturated hydrocarbons contain at least one double or triple bond. Ethane is saturated, while ethene and ethyne are unsaturated.
What is a homologous series?
A homologous series is a family of organic compounds with the same functional group and similar chemical properties. Consecutive members differ by a –CH₂– unit. Methane, ethane, propane and butane are examples.
What is structural isomerism?
Structural isomerism occurs when compounds have the same molecular formula but different arrangements of atoms. Butane and isobutane both have the formula C₄H₁₀ but possess different structures.
Why does a gas stove sometimes produce a yellow flame?
A yellow, smoky flame is produced when the fuel does not receive enough oxygen. Incomplete combustion occurs, and unburnt carbon particles become hot and glow.
What is the purpose of a functional group?
A functional group gives a carbon compound its characteristic chemical properties. For example, –OH identifies an alcohol, while –COOH identifies a carboxylic acid.
Does this worksheet contain Maharashtra Board questions?
Yes. It contains Maharashtra State Board exam important questions, MCQs, structures, chemical equations, nomenclature practice and selected previous board exam questions with year labels.
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