Question

Give an example each of (i) open chain (ii) branched chain and (iii) ring compounds

Answer 1

Open chain 
CH3-CH2-CH2-CH2-CH3 
Pentane 

Branched Chain 
CH3 
I 
CH3-C-CH3 
I 
CH3 
2,2'dimethyl propane 
Neopentane 

Ring type chain 
C5H10 
Cyclopentane

hope this help u 

Answer 2

hello friend , here is your a answer .

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open chain – Hexane , Heptane

branched chain – 2 Methyl propane ,
2 Methyl butane .

ring compounds – benzene , Cyclic Hexane

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hope it helped