Carbon and its Compounds

CBSE Class 10 Science · 96 board questions from this chapter; 87 listed below, 2022–2026

• Read the following passage and answer the questions that follow: Not all plants carry out photosynthesis by the same mechanism.…2026
• Which of the following set of compounds does not belong to same homologous series?2026
• Which of the following compounds will undergo addition reaction?2026
• The hydrocarbons with general formula C_n H_2 n represents:2026
• Consider the structures 'X' and 'Y' given below: and Which of the following statements are correct? (i) 'X' and 'Y' are…2026
• The formula of functional group for aldehyde is:2026
• Which of the following functional group is for carboxylic acid?2026
• Which of the following compounds does not undergo addition reaction?2026
• While washing dirty clothes by soap, micelles are formed. Select the correct statement about micelles.2026
• The natural sources of oxalic acid, lactic acid and methanoic acid respectively are:2026
• Assertion: Carbon shows the property of catenation. Reason (R): C - C bond is weak due to its small size.2026
• Assertion: Carbon compounds can form chains, branched and ring structures. Reason (R): Carbon exhibits the property of catenation.2026
• Assertion: Carbon shows the property of catenation. Reason (R): This is due to strong C - C bond.2026
• Assertion: There are large number of compounds with many carbon atoms linked to each other. Reason (R): Carbon-Carbon bond is…2026
• In the question, two statements are given - One labelled as Assertion and other labelled as Reason (R). Write the correct answer…2026
• Alcohol forms a homologous series with general formula C_n H_2 n+1-OH and -OH group as functional group. Ethanol is commonly…2026
• (i) Give reasons for the following: (I) Covalent compounds are poor conductor of electricity. (II) Soap does not form lather in…2026
• Attempt either option or: (i) Carbon cannot form C^4+ cation and C^4- anion. Explain. (ii) Define homologous series of carbon…2026
• Attempt either or: (i) What is homologous series? Which two of the following organic compounds belong to the same homologous…2026
• Attempt either option or: (i) Carbon cannot form C^4+ cation and C^4- anion. Explain. (ii) Define homologous series of carbon…2026
• Attempt either or: A carbon compound 'P' of molecular formula C_2 H_6 O is found to be neutral when tested with red and blue…2026
• Select from the following a hydrocarbon having one C-C bond and one C ≡ C bond:2025
• Given below are the structures of some hydrocarbons. Select the two structures which are related to each other from the given…2025
• A Hydrocarbon which does not belong to the same homologous series of carbon compounds is2025
• Choose the incorrect statement about the common reaction used in hydrogenation of vegetable oils.2025
• If we make carbon skeleton with four carbon atoms, the two different possible skeletons will be2025
• Assertion: Propanal and propanone are structural isomers. Reason (R): Propanal and propanone both have the same molecular formula.2025
• Assertion: Carbon and its compounds are our major sources of fuels. Reason (R): Most of the carbon compounds on burning release a…2025
• What are micelles? Draw the structure.2025
• Select from the following the members of same homologous series: (1) (2) (3) (4) What happens to (i) the melting point, and (ii)…2025
• A carbon compound 'A' on heating with excess conc. H_2 SO_4 forms a compound 'B', which on addition of one mole of hydrogen gas…2025
• Define the term "Functional group of a carbon compound". Write the formula of functional group present in (i) propanol and (ii)…2025
• (i) Draw electron dot structure of chlorine molecule. ( Atomic Number of Chlorine =17) (ii) What happens when chlorine reacts…2025
• The combining capacity of various elements depends on the number of valence electrons. Also the reactivity of elements is…2025
• 'A' and 'B' are two salts used for washing purposes. Salt 'A' is used for bathing also. Four test tubes I, II, III and IV as…2025
• Juice of tamarind turns blue litmus to red. It is because of the presence of an acid called:2024
• The name and formula of third member of homologous series of alkyne is:2024
• The structural formula of Cyclohexane is2024
• Carbon compounds: (i) are good conductors of electricity. (ii) are bad conductors of electricity. (iii) have strong forces of…2024
• The number of single and double bonds present in a molecule of benzene (C_6 H_6) respectively, are:2024
• Which one of the following hydrocarbons is different from the others?2024
• Identify a group of the unsaturated hydrocarbons from the following:2024
• Consider the following statements about homologous series of carbon compounds: All succeeding members differ by - CH_2 unit.…2024
• The structural formula of Cyclohexane is2024
• Assertion: Some vegetable oils are healthy. Reason (R): Vegetable oils generally have long unsaturated carbon chains.2024
• The melting and boiling points of carbon compounds are generally low and they are largely non-conductors of electricity. State…2024
• When a soap is dissolved in water, the soap molecules form structures. What are these structures called? Draw a labelled diagram…2024
• Identify the functional group present in the following compounds and also name them: H- HH HH-C-OH2024
• Distinguish between a saturated and an unsaturated hydrocarbon by flame test. List the products of combustion reaction of a…2024
• Write the formula and the molecular mass of the third homologue of alcohols. State how the boiling point of an alcohol changes as…2024
• Write chemical equations for the following reactions, giving the conditions for the reaction in each case: Reaction of ethanol…2024
• Why is the conversion of ethanol to ethanoic acid an oxidation reaction? Name the oxidising agent used in this conversion. Write…2024
• (i) Give reason why carbon can neither form C^4+ cations nor C^4- anions but form covalent compounds. (ii) What is homologous…2024
• (i) Define the term functional group. Identify the functional groups present in the following carbon compounds: (I) (II) (ii)…2024
• More than three million carbon compounds have been discovered in the field of chemistry. The diversity of these compounds is due…2024
• Carbon is a versatile element that forms the basis of all living organisms and many of the things we use. A large variety of…2024
• Select the correct option(s) in the following table:2023
• Acid present in tomato is:2023
• Acid present in tomato is:2023
• Hydronium ions are formed by the reaction between:2023
• The number of electrons in the outermost shell of the atom of a non-metal can be:2023
• Consider the structures of the three cyclic carbon compounds A, B and C given below and select the correct option from the…2023
• When ethanol reacts with sodium two products are formed. These products are:2023
• The total number of electrons shared in the formation of an ethyne molecule is:2023
• The correct representation of covalent bonding in an oxygen molecule is:2023
• Consider the structures of the three cyclic carbon compounds A, B and C given below and select the correct option from the…2023
• During vigorous exercise, the occurrence of cramps in the outer muscles of an athlete is due to the conversion of pyruvate to:2023
• Choose the option giving correct matching the items given in Column - I \& II.2023
• Assertion: Melting point and boiling point of ethanol are lower than that of sodium chloride. Reason (R): The forces of…2023
• A neutral organic compound 'X' (Molecular formula C_2 H_6 O ) on reacting with acidified K_2 Cr_2 O_7 gives an organic compound…2023
• An acid 'X' and an alcohol 'Y' react with each other in the presence of an acid catalyst to form a sweet smelling substance 'Z'.…2023
• A saturated organic compound 'A' belongs to the homologous series of alcohols. On heating 'A' with concentrated sulphuric acid at…2023
• (i) Draw the structure of the following compounds: (ii) How are structure (i) and structure (ii) given below related to one…2023
• (i) Butane had both Carbon - Carbon bonds as well as Carbon - Hydrogen bonds. Draw its structural formula and state the number of…2023
• Explain why carbon forms compounds mainly by covalent bonds. Explain in brief two main reasons for carbon forming a large number…2023
• Write the chemical equation for the following: (i) Combustion of methane (ii) Oxidation of ethanol (iii) Hydrogenation of ethene…2023
• Write the molecular formula of the following carbon compounds: (i) Methane (ii) Propane Carbon compounds have low melting and…2022
• The electrons in the atoms of two elements X and Y are distributed in three shells having 1 and 7 electrons respectively in their…2022
• Draw two structural isomers of butane.2022
• Consider the following molecular formulae of carbon compounds: (i) CH_3 COOH (ii) CH_3 OH (iii) C_2 H_6 (iv) C_3 H_4 (v) C_4 H_8…2022
• Consider the carbon compounds having following molecular formula: (i) C_2 H_2 (ii) C_2 H_6 (iii) C_3 H_7 OH (iv) C_2 H_5 COOH (v)…2022
• The molecular formulae of two alkynes, A and B are C_x H_2 and C_3 H_y respectively. Find the values of x and y. Write the names…2022
• Write the chemical formula of two consecutive homologous of organic compounds having functional group -OH. What happens to the…2022
• Consider the carbon compounds having following molecular formula: (i) C_3 H_6 (ii) C_3 H_8 (iii) C_4 H_6 (iv) C_6 H_6 (v) C_6…2022
• Draw two different possible structures of a saturated hydrocarbon having four carbon atoms in its molecule. What are these two…2022
• State the reason why (i) carbon compounds have low melting and boiling points. (ii) carbon compounds do not conduct electricity.…2022
• "Two different forms of carbon - diamond and graphite have different structures and very different physical properties even…2022

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