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Solved 2022 Term 2 Question Paper CBSE Class 10 Science — Question 3

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Question

Question 9(b)

(i) Write the molecular formula of benzene and draw its structure.

(ii) Write the number of single and double covalent bonds present in a molecule of benzene.

(iii) Which compounds are called alkynes ?

Answer

(i) Molecular formula of benzene — C6H6

Structure of benzene:

(i) Write the molecular formula of benzene and draw its structure. (ii) Write the number of single and double covalent bonds present in a molecule of benzene. (iii) Which compounds are called alkynes? CBSE 2022 Term 2 Science Class 10 Question Paper Solved.

(ii) In the structure formula of benzene there are 3 double bonds and 9 single bonds present.

(iii) Organic compounds of carbon and hydrogen containing one or more triple bonds are called alkynes. Their general formula is CnH2n-2.