MCQ Questions for Class 10 Science Chapter 4 Carbon and Its Compounds with Answers

Students can practice the NCERT MCQ Questions for Class 10 Science Chapter 4 Carbon and Its Compounds with Answers Pdf free download is available here. Revise all the concepts easily by taking help from the MCQ Questions for Class 10 Science with Answers are prepared based on the latest exam pattern. Students can refer to these Carbon and Its Compounds Class 10 MCQs Questions with Answers and assess their preparation level.

Q1. Assertion: Soaps are 100% biodegradable but do not work well with hard water.
Reason: Some detergents are not bio-degradable but work well with hard water.

(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
(e) Both A and R are false.

(b) Both A and R are true but R is not the correct explanation of A.

Q2. Ethanol reacts with Na metal to form

(a) CH3ONa + H2
(b) C2H5ONa + H2
(c) CH3COONa + H2
(d) CH3C00H + H2O

(b) C2H5ONa + H2

Q3. Carbon exists in the atmosphere in the form of

(a) carbon monoxide only
(b) carbon monoxide in traces and carbon dioxide
(c) carbon dioxide only
(d) coal

(b) carbon monoxide in traces and carbon dioxide

Q4. The number of covalent bonds in C4H10 is

(a) 10
(b) 8
(c) 13
(d) 12

Q5. A reagent which can help us to distinguish between alkenes and alkynes is:

(a) Bromine water
(b) Carbon tetrachloride
(c) Alkaline KMnO4
(d) Ammoniacal cuprous chloride

(d) Ammoniacal cuprous chloride

Q6. The soap molecule has a

(a) hydrophilic head and a hydrophobic tail
(b) hydrophobic head and a hydrophilic tail
(c) hydrophobic head and a hydrophobic tail
(d) hydrophilic head and a hydrophilic tail

(a) hydrophilic head and a hydrophobic tail

Q7. Detergents can be used for washing of clothes

(a) only in hard water
(b) only in soft water
(c) both in soft and hard water
(d) None of the above

Q8. The number of carbon atom present in the molecule of fifth member of the homologous series of alkynes is :

(a) four
(b) five
(c) six
(d) seven

Q9. Which of the following is homologous pair?

(a) CH4 and C2H4
(b) CH3OH and CH3CHO
(c) HCHO and CH3CHO
(d) C3H5OH and CH3COCH3.

Q10. The important feature of homologous series is :

(a) Difference in the chemical properties of compounds.
(b) Difference in the general formula of compounds
(c) Specific methods of formation of compounds
(d) Similarly in the functional group of compounds.

(d) Similarly in the functional group of compounds.

Q11. IUPAC name of ethyl alcohol is :

(a) Ethanol
(b) Methanol
(c) Acetic Acid
(d) Ethanoic Acid.

(a) Ethanol

Q12. Reason of high number of organic compounds is :

(a) High activeness of carbon
(b) Changeable valency of carbon
(c) Ability ty of carbon to make covalent compound
(d) Abilito make series by connecting atoms together.

(d) Abilito make series by connecting atoms together.

Q13. IUPAC name of formaldehyde:

(a) Formaldehyde
(b) Methanol
(c) Ethanol
(d) Aceteldehyde.

(b) Methanol

Q14. The IUPAC name of Carbon and its Compounds Class 10 Extra Questions with Answers Science Chapter 4 71 is :

(a) butanone
(b) propanone
(c) butanol
(d) propanol

(b) propanone

Q15. The organic compounds having ketonic group is :

(a) CH3COOH
(b) CH3COCH3
(c) HCOOH
(d) CH3CH2OH

(d) CH3CH2OH

Q16. Which of the given can be used for the denaturation of ethyl alcohol?

A. Methyl alcohol
B. Pyridines
C. Copper sulphate
D. All of these

C. Copper sulphate

Q17. Soaps are formed by saponification of

A. Alcohols
B. Glycosides
C. Simple esters
D. Carboxylic acids

D. Carboxylic acids

Q18. Carbon exists in the atmosphere in the form of

A. Only carbon monoxide
B. Carbon monoxide in traces and carbon dioxide
C. Only carbon dioxide
D. Coal

Q19. Which of the following statements are usually correct for carbon compounds? These
(a) Are good conductors of electricity.
(b) Are poor conductors of electricity.
(c) Have strong forces of attraction between their molecules.
(d) Do not have strong forces of attraction between their molecules.

A. (A) & (C)
B. (B) & (C)
C. (A) & (D)
D. (B) & (D)

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Q1. Assertion: Soaps are 100% biodegradable but do not work well with hard water.Reason: Some detergents are not bio-degradable but work well with hard water.