Organic Chemistry

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
Option”A” is correct
12.Which of the following is compatible?
A. CH₄ and C₂H₄
B. C₂H₂ and C₆H₆
D. CH₄ and C₂H₆
Option”D” is correct an analogue of methyl alcohol
A. ethyl alcohol
B. normal propyl alcohol
C. isopropyl alcohol
D. formaldehyde
Option”A” is correct
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.
Option”D” is correct
15.The general formula of a saturated hydrocarbon is –
A. CₙH₂ₙ₊₁
B. CₙH₂ₙ₊₂
C. CₙH₂ₙ₋₁
D. CₙH₂ₙ₋₂
Option”B” is correct
16.The general formula of alkyne is –
A. CₙH₂ₙ
B. CₙH₂ₙ₋₂
C. CₙH₂ₙ₊₂
D. CₙH₂ₙ₋₁
Option”B” is correct
17.The general formula of alkene is
A. CₙH₂ₙ
B. CₙH₂ₙ₋₁
C. CₙH₂ₙ₊₁
D. CₙH₂ₙ₊₂
Option”A” is correct
18.The general formula of alkane is –
A. CₙH₂ₙ
B. CₙH₂ₙ₊₁
C. CₙH₂ₙ₊₂
D. CₙH₂ₙ₋₂
Option”C” is correct
19.The proportional formula of acetylene is –
B. CH₂
C. CH₄
D. C₂H₂
Option”A” is correct
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
Option”D” is correct