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Rajasthan Board Class 10 (RBSE) Carbon and its Compounds — practice questions

Explore 29 free Carbon and its Compounds questions in Rajasthan Board Class 10 (RBSE) Science. Open each question or exercise to read its content, reference answers and available explanation.

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Carbon and its Compounds questions and exercises with answers

Showing questions 1–29 of 29.

Carbon achieves a stable configuration by:Read the answer and worked solution →The valency of carbon is:Read the answer and worked solution →The ability of carbon to form long chains and rings by bonding with other carbon atoms is called:Read the answer and worked solution →Hydrocarbons in which carbon atoms are joined only by single bonds are said to be:Read the answer and worked solution →Compounds having the same molecular formula but different structures are called:Read the answer and worked solution →A series of compounds in which successive members differ by a –CH₂– unit is called a:Read the answer and worked solution →The functional group present in alcohols is:Read the answer and worked solution →The functional group present in carboxylic acids is:Read the answer and worked solution →The common name of ethanoic acid, a dilute solution of which is called vinegar, is:Read the answer and worked solution →The reaction of an alcohol with a carboxylic acid in the presence of an acid catalyst, forming a sweet-smelling ester, is called:Read the answer and worked solution →Soaps are the sodium or potassium salts of:Read the answer and worked solution →The cleansing action of soap is due to the formation of spherical aggregates called:Read the answer and worked solution →The addition of hydrogen to an unsaturated hydrocarbon to form a saturated one uses a catalyst of:Read the answer and worked solution →Carbon forms bonds by:Read the answer and worked solution →In a covalent double bond, the number of electron pairs shared is:Read the answer and worked solution →Diamond and graphite differ because they are:Read the answer and worked solution →Why do most covalent compounds have low melting points?Read the answer and worked solution →A compound with only single bonds between carbon atoms is called:Read the answer and worked solution →The general formula for the alkane series is:Read the answer and worked solution →Pentane and isopentane share the formula C₅H₁₂ but differ in their carbon arrangement. They are:Read the answer and worked solution →The IUPAC name of CH₃CH₂OH is:Read the answer and worked solution →Which of the following pairs are members of the same homologous series?Read the answer and worked solution →The functional group –COOH represents:Read the answer and worked solution →Combustion of a hydrocarbon in plenty of oxygen produces:Read the answer and worked solution →In alkaline KMnO₄, ethanol is converted to:Read the answer and worked solution →Hydrogenation of vegetable oil in the presence of nickel catalyst converts it to:Read the answer and worked solution →Reaction of CH₄ with Cl₂ in sunlight to give CH₃Cl is an example of:Read the answer and worked solution →A soap molecule cleans greasy clothes mainly because:Read the answer and worked solution →Detergents work better than soaps in hard water because:Read the answer and worked solution →

Worked practice questions

Carbon achieves a stable configuration by:

  1. transferring electrons to hydrogen
  2. gaining 4 electrons
  3. losing 4 electrons
  4. sharing its valence electrons (covalent bonding)
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Correct answer: D. sharing its valence electrons (covalent bonding)

Carbon (4 valence electrons) shares electrons to complete its octet, forming covalent bonds.

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The valency of carbon is:

  1. 3
  2. 2
  3. 1
  4. 4
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Correct answer: D. 4

Carbon is tetravalent — valency 4.

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The ability of carbon to form long chains and rings by bonding with other carbon atoms is called:

  1. polymerisation
  2. catenation
  3. isomerism
  4. ionisation
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Correct answer: B. catenation

Catenation is carbon's ability to bond with itself forming chains and rings.

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