Q1. What is the number of hydrogen atoms in the compound \( \ce{CH3CH2CH2CH2CH3} \)?A. 10B. 14C. 8D. 12
Q2. Which substituent on a benzene ring deactivates it moderately and directs electrophiles to ortho and para positions?A. \( -\ce{NH2} \)B. \( -\ce{NO2} \)C. \( -\ce{Cl} \)D. \( -\ce{CH3} \)
Q3. Which hydrocarbon with molecular formula \( \ce{C5H10} \) has a five-membered ring and no double bonds?A. PenteneB. CyclopentaneC. CyclopenteneD. Methylcyclobutane
Q4. Which of the following hydrocarbons has the lowest boiling point?A. \( \ce{C4H10} \)B. \( \ce{C3H8} \)C. \( \ce{CH4} \)D. \( \ce{C5H12} \)
Q5. Which substituent on a benzene ring would direct an electrophile to the meta position with the strongest deactivating effect?A. \( -\ce{CH3} \)B. \( -\ce{NO2} \)C. \( -\ce{Cl} \)D. \( -\ce{OH} \)
Q7. Which hydrocarbon is used as a fuel in automobiles with less pollution?A. ButaneB. BenzeneC. MethaneD. Hexane
Q8. Which hydrocarbon is used in the manufacture of polystyrene?A. BenzeneB. MethaneC. EthaneD. Propane
Q9. Which substituent on a benzene ring is ortho-para directing due to hyperconjugation?A. \( -\ce{NO2} \)B. \( -\ce{COOH} \)C. \( -\ce{CH2CH3} \)D. \( -\ce{CN} \)