MCQs for Class 10 Science Carbon and Its Compounds

Class 10 Chapter 4 Carbon and Its Compounds concentrates mainly on the most vital and unique element – carbon. This chapter requires strong basics and understanding of concepts to score good marks in the exam. Practicing MCQs for Class 10 Science Carbon and Its Compounds will give you an in-depth understanding of the topics and type of questions expected to come in the CBSE exam.These class 10 Chapter 4 Carbon and Its Compounds MCQs are a great way to assess the preparation level and prepare accordingly for the exam. These Multiple Choice Questions with the answer key cater to last-minute revision and boost the confidence level to answer any question in the main exam.

Class 10 Science MCQs Chapter 4 Carbon and Its Compounds

1) C3H8 belongs to the homologous series of

1. Alkynes
2. Alkenes
3. Alkanes
4. Cyclo alkanes

Answer: 3

2) Carbon forms four covalent bonds by sharing its four valence electrons with four univalent atoms, e.g., hydrogen. After the formation of four bonds, carbon attains the electronic configuration of

1. helium
2. neon
3. argon
4. Krypton

Answer: 2

3) Subsequent members of the homologous series differ by how many atomic mass units?

1. 14
2. 16
3. 24
4. 28

Answer: 4

4) Which is a denatured spirit?

1. Ethanol only
2. Ethanol and methanol (50%)
3. Ethanol and methanol (5%)
4. Methanol only

Answer: 3

5) The heteroatoms present in CH3—CH2—O—CH2—CH2Cl are

(i) oxygen

(ii) carbon

(iii) hydrogen

(iv) chlorine

1. (i) and (ii)
2. (ii) and (iii)
3. (iii) and (iv)
4. (i) and (iv)

Answer: 4

6) The number of isomers of pentane is

1. 2
2. 3
3. 4
4. 5

Answer: 2

7) Cation is formed when:

1. Atom gains electrons
2. Atom loses electrons
3. Proton is lost by the atom
4. Atom shares electrons

Answer: 2

8) Name of the molecule having the formula C3H8

1. Propane
2. Ethyne
3. Butane
4. Propene

Answer: 1

9) The allotrope of carbon which is a good conductor of heat and electricity is 

1. Diamond 
2. graphite 
3. charcoal 
4. none of these

Answer: 2

10) The IUPAC name of acetyl acetone is:

1. 2,5- Pentanedione
2. 2,4- Pentenedione
3. 2,4- Hexanedione
4. 2,4- Pentanedione

Answer: 2

11) Oils on treating with hydrogen in the presence of palladium or nickel catalyst form fats. This is an example of:

1. Addition Reaction
2. Substitution Reaction
3. Displacement reaction
4. Oxidation Reaction

Answer: 1

12) A few drops of ethanoic acid were added to solid sodium carbonate. The observation made was that

1. a hissing sound was produced
2. brown fumes evolved
3. brisk effervescence occurred
4. a pungent smelling gas evolved

Answer: 3

13) Which of the following does not belong to the same homologous series?

1. CH4
2. C2H6
3. C3H8
4. C4H8

Answer:  4

14) Soaps are formed by saponification of

1. alcohols
2. glycosides
3. simple esters
4. carboxylic acids

Answer: 3

15) Tertiary butane gets oxidised with oxidising agents like alkaline KMNO4 to

1. Isobutane
2. Ter-butyl alcohol
3. Secondary-propyl alcohol
4. All of above

Answer: 2