| 11. | How much difference does any member of the evolutionary category show from the molecular formula of the next and previous member? |
A. CH₂ | |
B. CH₄ | |
C. C₂H₄ | |
D. C₂H₆ |
| 12. | Which of the following is compatible? |
A. CH₄ and C₂H₄ | |
B. C₂H₂ and C₆H₆ | |
C. C₂H₅OH в CH₃OCH₃ | |
D. CH₄ and C₂H₆ |
| 13. | is an analogue of methyl alcohol |
A. ethyl alcohol | |
B. normal propyl alcohol | |
C. isopropyl alcohol | |
D. formaldehyde |
| 14. | Which statement is not correct regarding homologous series? |
A. All members of a homogeneous series can be expressed by the same general formula. | |
B. Any member of a homologous series shows a difference of -CH2 from the molecular formula of its next and previous member. | |
C. All members of a homologous series exhibit similar chemical properties | |
D. There is no gradual change in the physical properties of the members of a homogeneous series. |
| 15. | The general formula of a saturated hydrocarbon is – |
A. CₙH₂ₙ₊₁ | |
B. CₙH₂ₙ₊₂ | |
C. CₙH₂ₙ₋₁ | |
D. CₙH₂ₙ₋₂ |
| 16. | The general formula of alkyne is – |
A. CₙH₂ₙ | |
B. CₙH₂ₙ₋₂ | |
C. CₙH₂ₙ₊₂ | |
D. CₙH₂ₙ₋₁ |
| 17. | The general formula of alkene is |
A. CₙH₂ₙ | |
B. CₙH₂ₙ₋₁ | |
C. CₙH₂ₙ₊₁ | |
D. CₙH₂ₙ₊₂ |
| 18. | The general formula of alkane is – |
A. CₙH₂ₙ | |
B. CₙH₂ₙ₊₁ | |
C. CₙH₂ₙ₊₂ | |
D. CₙH₂ₙ₋₂ |
| 19. | The proportional formula of acetylene is – |
A. CH | |
B. CH₂ | |
C. CH₄ | |
D. C₂H₂ |
| 20. | Which two of the following carbon compounds have the same proportional formula? |
A. ethylene and acetylene | |
B. methane and ethane | |
C. propane and butane | |
D. acetylene and benzene |