Carbon and its Compounds

Bihar Board Class 10 · Science · 38 past questions

1. Q1 2026

   The main component of domestic gas ( LPG ) is

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2. Q2 2026

   Which of the following is a hydrocarbon ?

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3. Q3 2026

   -OH is the functional group of

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4. Q4 2026

   How many covalent bonds are there in methane ?

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5. Q5 2026

   The shape of C$_{60}$ Fullerene is similar to which of the following ?

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6. Q6 2025

   How many isomers of butane are possible ?

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7. Q7 2025

   The shape of methane molecule is

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8. Q8 2025

   The valency of carbon in organic compounds is

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9. Q9 2025

   Which of the following is saturated hydrocarbon ?

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10. Q10 2025

    IUPAC name of ethylene is

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11. Q11 2025

    Compounds formed by transfer of electrons are called

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12. Q12 2024

    The chemical formula of Chalk is

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13. Q13 2024

    How many structural isomers of pentane, having molecular formula $C_5H_{12}$ are possible ?

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14. Q14 2024

    The functional group >CO is called

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15. Q15 2024

    Which of the following gases is used in welding?

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16. Q16 2024

    The general formula of an alkene is

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17. Q17 2024

    Which of the following is the chemical formula of glucose ?

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18. Q18 2024

    The commercial production of ethyl alcohol is done by which chemical process ?

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19. Q19 2024

    The molecular formula of ethane is $C_2H_6$. It has

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20. Q20 2024

    Which one of the following is a covalent compound ?

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21. Q21 2023

    What is the chemical formula of dry ice?

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22. Q22 2023

    The hardest natural substance is

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23. Q23 2023

    How many bonds are there between two atoms of one molecule of oxygen gas ?

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24. Q24 2023

    The sodium salts of higher fatty acids are called

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25. Q25 2023

    Which of the following is a symbol of carbonyl group?

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26. Q26 2023

    Which of the following organic compounds is an alkyne ?

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27. Q27 2023

    What is the general formula of an alkane?

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28. Q28 2023

    Carbon combines with hydrogen to form

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29. Q29 2022

    The functional group – CHO is called

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30. Q30 2022

    Which of the following gases is formed on heating ethanol with concentrated H$_2$SO$_4$ ?

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31. Q31 2020

    Which of the following is a carboxyl group ?

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32. Q32 2020

    Which of the following is the chemical formula of glucose ?

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33. Q33 2020

    How many covalent bonds are there in one molecule of ethane ?

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34. Q34 2018

    Propane, with the molecular formula C$_3$H$_8$ has -

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35. Q35 2017

    COOH Functional group is called-

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36. Q36 2017

    Organic compounds which have same molecular formula but different structural formula are known as –

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37. Q37 2016

    Carbon combining with hydrogen forms

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38. Q38 2015

    How many covalent bonds are present in methane ?

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