MCQ Questions For Class 10 Science Chapter 4 Carbon and Its Compound

Students can refer to the following Carbon and Its Compound MCQ Questions for Class 10 with Answers provided below based on the latest curriculum and examination pattern issued by CBSE and NCERT. Our teachers have provided here a collection of multiple choice questions for Carbon and Its Compound Class 10 covering all topics in your textbook so that students can assess themselves on all important topics and thoroughly prepare for their exams

Carbon and Its Compound MCQ Questions for Class 10 with Answers

We have provided below Carbon and Its Compound MCQ Questions for Class 10 with answers which will help the students to go through the entire syllabus and practice multiple choice questions provided here with solutions. As Carbon and Its Compound MCQs for Class 10 Science pdf download can be really scoring for students, you should go through all problems provided below so that you are able to get more marks in your exams.

Question. How many unshared pairs of electrons are present in water molecule?   
(1) One
(2) Zero
(3) Two
(4) Three

Question. Nitrogen molecule involves formation of   
(1) Single covalent bond
(2) Double covalent bond
(3) Triple covalent bond
(4) Ionic bond

Question. A phenomenon by which an element occurs in different physical modification in same physical state is called     
(1) Isomerism
(2) Allotropy
(3) Amorphous
(4) Crystalline

Question. Number of electrons shared between carbon carbon atoms in ethene is     
(1) 2
(2) 4
(3) 6
(4) 8

Question. Which of the following does not contain double bond?   
(1) CO₂
(2) C₂H₄
(3) HCl
(4) O₂

Question. Which of the following is not an allotropic form of carbon? 
(1) Fullerene
(2) Fluorine
(3) Diamond
(4) Graphite

Question. In fullerene carbon atoms are arranged in mixed   
(1) tetragons and pentagons
(2) pentagons and hexagons
(3) pentagons and heptagons
(4) All are correct

Question. Among the following the one having longest chain is   
(1) Neopentane
(2) Isopentane
(3) 2-Methylpentane
(4) 2,2-Dimethylbutane

Question. In C₆H₁₄ the number of possible isomers is 
(1) 3
(2) 6
(3) 4
(4) 5

Question. Which is not a property of graphite?   
(1) It melts at 800°C
(2) It is a smooth, crystalline form of carbon
(3) It is a good conductor of electricity
(4) It forms a black sign on the paper

Question. Diamond is not a good conductor of electricity because 
(1) it is very hard
(2) its structure is very compact
(3) it is not water soluble
(4) it has no free electrons

Question. In order to form branching, an organic compound must have a minimum number of 
(1) four carbon atoms
(2) three carbon atoms
(3) five carbon atoms
(4) six carbon atoms

Question. Which of the following is purest form of carbon?   
(1) Diamond
(2) Coal
(3) Wood
(4) Paper

Question. Which of the following is not a saturated hydrocarbon? 
(1) Cyclohexane
(2) Benzene
(3) Butane
(4) Isobutane

Question. Which of the following gases is called ‘Marsh gas’?   
(1) H₂
(2) CH₄
(3) C2H₄
(4) C2H₂

Question. Which of the following statements is not correct ?   
(1) A common functional group is present in different members of a homologous series.
(2) Two consecutive members of a homologous series differ by a –CH3 group.
(3) The members of a homologous series can be represented by one general formula.
(4) Different members of a homologous series have similar chemical properties.

Question. The difference in molecular weight of two consecutive members of a homologous series is 
(1) 15
(2) 14
(3) 8
(4) 9

Question. Which of the following is a pair of saturated hydrocarbon ?   
(1) Butane and isobutane
(2) Cyclohexane and hexene
(3) Propanal and propanone
(4) All of these

Question. Pentane has the molecular formula C₅H₁₂. It has 
(1) 5 covalent bonds
(2) 12 covalent bonds
(3) 16 covalent bonds
(4) 17 covalent bonds

Question. Unsaturation in the organic compound can be tested by the help of 
(1) Baeyer’s test
(2) Fehling’s test
(3) Chlorination reaction
(4) Dehydration reaction

Question. The reaction hv 4 2 light 3 CH + Cl ¾¾¾→CH Cl +HCl is an example of 
(1) addition reaction
(2) substitution reaction
(3) elimination reaction
(4) oxidation reaction

Question. The substance that would not at all be formed during the reaction of methane and chlorine in presence of sunlight is   
(1) CH₃Cl
(2) CHCl₃
(3) CH₃CH₂CH₃
(4) CH₂Cl₂

Question. Methane, ethane and propane are said to form a homologous series because all are   
(1) hydrocarbons
(2) saturated hydrocarbons
(3) aliphatic hydrocarbons
(4) differ from each other by –CH₂ group

Question. Th e fo llowing reactio n is an example of CH₄ + 2O₂ → CO₂ + 2H₂O + heat + light   
(1) addition reaction
(2) substitution reaction
(3) combustion reaction
(4) displacement reaction

Question. Detergents can lather well in –
(1) soft water
(2) hard water
(3) river water
(4) any one of the above

Question. Two organic compounds ‘A’ and ‘B’ react with sodium metal and both produce the same gas ‘X’, but with sodium hydrogen carbonate, only compound B reacts to give a gas ‘Y’. Identify ‘A’, ‘B’, ‘X’ and ‘Y’:
(1) A = Ethylene, B = Ethyl alcohol, X = Carbon dioxide, Y = Hydrogen
(2) A = Ethyl alcohol, B = Acetic acid, X = Hydrogen, Y = Carbon dioxide
(3) A = Methyl alcohol, B = Ethyl alcohol, X = Hydrogen, Y = Carbon dioxide
(4) A = Acetic acid, B = Formic acid, X = Carbon dioxide, Y = Hydrogen

Question. The functional groups present in the following compound are –

(1) alcohol, ketone and ester
(2) ester and carboxylic acid
(3) carboxylic acid and ketone
(4) ester and alcohol

Question. A hydrocarbon ‘A’ (C₃H₈) on treatment with chlorine in presence of sunlight yielded compound ‘B’ as major product Reaction of ‘B’ with aqueous KOH gave ‘C’ which on treatment with concentrated H₂SO₄ yielded ‘D’. Hydrogenation of ‘D’ gave back ‘A’. The sequence of reactions involved in above conversion is:
(1) substitution, substitution, addition, dehydration
(2) substitution, substitution , dehydration, addition
(3) substitution, dehydration, addition, addition
(4) addition, substitution, dehydration, substitution.

Question. Antiknocking compound in gasoline is :
(1) Triethyl lead
(2) Trimethyl lead
(3) Tetramethyl lead
(4) Tetraethyl lead

Question. How many grams of oxygen gas will be needed for complete combustion of 2 moles of 3rd member of alkyne series ?
(1) 186 g
(2) 256 g
(3) 352 g
(4) 372 g

Question. The total number of electrons and the number of electrons involved in the formation of various bonds present in one molecule of propanal (C₂H₅CHO) are respectively.
(1) 32 and 20
(2) 24 and 20
(3) 24 and 18
(4) 32 and 18

Question. An organic liquid ‘A’ with acidified potassium dichromate gave product ‘B’. The compound ‘B’ on heating with methanol in presence of concentrated sulphuric acid formed compound ‘C’ which on subsequent treatment with sodium hydroxide formed two product ‘D’ and ‘E’. The product ‘D’ is known to affect the optic nerve causing blindness. Intake of ‘D’ in very small quantities can cause death. What are compound ‘A’, ‘B’, ‘C’, ‘D’ and ‘E’?
(1) A = Ethanol, B = Ethanoic acid, C = Methanol D = Sodium acetate, E = Methyl ethanoate
(2) A = Ethanol, B = Ethanoic acid, C = Methyl ethanoate D = Methanol, E = Sodium acetate
(3) A = Sodium acetate, B = Ethanoic acid, C = Methyl ethanoate, D = Methanol, E = Ethanol
(4) A = Ethanol, B = Ethanoic acid, C = Methyl ethanoate, D = Sodium acetate, E = Methanol

Question. Soaps are sodium salts of fatty acids. Which of the following fatty acids does not form soap?
(1) butyric acid
(2) oleic acid
(3) palmitic acid
(4) stearic acid

Question. During laboratory preparation CH₄ gas is collected by downward displacement of water because
(1) CH₄ is lighter than Air
(2) CH₄ is poisonous gas
(3) It does not dissolve in water
(4) All the above statements are correct

Question. In shaving creams________ is added to prevent rapid drying.
(1) Methanol
(2) Glycerol
(3) Ethanol
(4) Glycol

Question. The fermentation reactions are carried out in temperature range of –
(1) 20-30°C
(2) 30-40°C
(3) 40-50°C
(4) 50-60°C

Question. The functional group present in butanone is   
(1) Carboxy
(2) Ketonic
(3) Aldehydic
(4) Alcoholic

Question. The IUPAC name of the compound CH₂ = C(CH₃)₂ is   
(1) 1,1-Dimethylprop-2-ene
(2) 2-Methylprop-1-ene
(3) 2-Ethyl-3,3-dimethylbutane
(4) 2,3-Dimethylhexane

Question. Glacial acetic acid is   
(1) frozen acetic acid
(2) 5–8% solution of acetic acid
(3) mixture of acetic acid and alcohol
(4) None of these

Question. Ethene can be prepared by reaction of ethanol with 
(1) Hot conc. H₂SO₄
(2) Alkaline KMnO₄
(3) Sodium metal
(4) NaHCO₃

Question. When methane is burnt in an excess of air, the products of combustion are   
(1) C and H₂O
(2) CO and H₂O
(3) CO₂ and H₂
(4) CO₂ and H₂O

Question. The number of oxygen molecules used in the combustion of 1 molecule of ethanol is   
(1) 1
(2) 2
(3) 3
(4) 4

Question. When ethanoic acid is heated with NaHCO₃ the gas evolved is   
(1) H₂
(2) CO₂
(3) CH₄
(4) CO

Question. The reaction, 2C₂H₅OH + 2Na → 2C₂H₅ONa + H₂ suggests that ethanol is 
(1) acidic in nature
(2) basic in nature
(3) amphoteric in nature
(4) neutral in nature

Question. Conversion of ethanol to ethanoic acid is a/an 
(1) substitution reaction
(2) oxidation reaction
(3) addition reaction
(4) rearrangement reaction

Question. In the reaction CH₃COONa + NaOH → the gas obtained is 
(1) C₂H₆
(2) C₂H₂
(3) CH₄
(4) C₂H₆

Question. C2H₄ reacts with hydrogen in presence of Ni to give   
(1) CH₄
(2) C2H6
(3) HCOOH
(4) HCHO

Question. Which of the following salts when dissolved in water produce hard water ? 
(1) Calcium sulphate
(2) Magnesium bicarbonate
(3) Calcium bicarbonate
(4) All of these

Question. Ethanol on complete oxidation gives   
(1) carbon dioxide and water
(2) acetaldehyde
(3) acetic acid
(4) acetone

Question. The by-product of soap industry is 
(1) glycerol
(2) glycol
(3) isoprene
(4) acid

Fill in the Blanks :

Question. Ethylene burns in air to form CO₂ and …………… .

Question. The ability of carbon to form chains gives rise to a …………… series of compounds.

Question. Newly discovered allotrope of carbon is …………. .

Question. The soft crystalline form of carbon is ……………. .

Question. Next homologue of ethane is …………… .

Question. Detergents cause …………….. pollution.

These Carbon and Its Compound MCQ Question are prepared by our expert at our CBSENCERT Solution. It will help to make your preparation better and score good marks in the Class 10 exam.