Which ONE of the following pairs of organic compounds are NOT pairs of isomers?

ID: 916078 • Letter: W

Question

A) ethanol (CH3-CH2-OH) and dimethyl ether (CH3–O–CH3)

B) ethyl formate (H-CO-O-CH2CH3) and methyl acetate (CH3-CO-O-CH3)

C) ethylenediamine (H2N-CH2CH2-NH2) and dimethylhydrazine (CH3-NH-NH-CH3)

D) acrylic acid (CH2=CH-COOH) and propanedial (OHC–CH2–CHO)

E) acetamide (CH3-CO-NH2) and glycine (H2N-CH2-COOH)

Which ONE of the following pairs of organic compounds are NOT pairs of isomers?

A) ethanol (CH3-CH2-OH) and dimethyl ether (CH3–O–CH3)

B) ethyl formate (H-CO-O-CH2CH3) and methyl acetate (CH3-CO-O-CH3)

C) ethylenediamine (H2N-CH2CH2-NH2) and dimethylhydrazine (CH3-NH-NH-CH3)

D) acrylic acid (CH2=CH-COOH) and propanedial (OHC–CH2–CHO)

E) acetamide (CH3-CO-NH2) and glycine (H2N-CH2-COOH)

A) ethanol (CH3-CH2-OH) and dimethyl ether (CH3–O–CH3)

Condensed formulas: C2H6O and C2H6O

B) ethyl formate (H-CO-O-CH2CH3) and methyl acetate (CH3-CO-O-CH3)

Condensed formulas: C3O2H6 and C3O2H6

C) ethylenediamine (H2N-CH2CH2-NH2) and dimethylhydrazine (CH3-NH-NH-CH3)

C2N2H8 and C2N2H8

D) acrylic acid (CH2=CH-COOH) and propanedial (OHC–CH2–CHO)

C3O2H4 and C3O2H4

E) acetamide (CH3-CO-NH2) and glycine (H2N-CH2-COOH)

C2H5O1N and C2H5NO2

These have different amount of oxygen each

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