Q1. Which hydrocarbon with 7 carbon atoms has the lowest boiling point among its isomers?A. HeptaneB. 2,2,3-TrimethylbutaneC. 3-MethylhexaneD. 2,3-Dimethylpentane
Q2. A hydrocarbon with 8 carbon atoms has two ethyl branches. What is its IUPAC name?A. 2,2-DiethylhexaneB. 2,3-DiethylbutaneC. 3-EthylheptaneD. 2,2,3-Trimethylpentane
Q3. Which hydrocarbon class has a planar structure due to delocalized π electrons?A. AromaticsB. AlkanesC. AlkenesD. Cycloalkanes
Q4. Which hydrocarbon with 8 carbon atoms has the most branched structure among its isomers?A. OctaneB. 2-MethylheptaneC. 2,2-DimethylhexaneD. 2,2,3,3-Tetramethylbutane
Q5. Which hydrocarbon with 6 carbon atoms has the lowest boiling point among its isomers?A. HexaneB. 2,2-DimethylbutaneC. 2-MethylpentaneD. 3-Methylpentane
Q6. Which hydrocarbon with molecular formula \( \ce{C7H14} \) has a six-membered ring and one double bond?A. CycloheptaneB. HepteneC. MethylcyclohexeneD. Cyclohexane
Q7. Which substituent on a benzene ring directs electrophiles to both ortho and para positions?A. \( -\ce{NO2} \)B. \( \ce{-CH3} \)C. \( -\ce{CN} \)D. \( -\ce{COOR} \)
Q9. What is the IUPAC name of \( \ce{CH3CH2CH2CH(CH3)2} \)?A. 3-MethylpentaneB. 2,2-DimethylpentaneC. HexaneD. 2-Methylpentane
Q10. Which hydrocarbon with molecular formula \( \ce{C9H16} \) has a cyclic structure with one degree of unsaturation?A. CyclononaneB. NonaneC. NonadiyneD. Cyclononene