AFNS — AFNS Chemistry
Organic Chemistry
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#17 Functional group of aldehyde:
A) -CHO
B) -OH
C) -COOH
D) -O-
Answer: A
#18 Functional group of carboxylic acid:
A) -COOH
B) -OH
C) -CHO
D) -Cl
Answer: A
#19 Functional group of ketone:
A) C=O in chain
B) -OH
C) -COOH
D) -NH2
Answer: A
#20 Isomers have:
A) Same molecular formula different structure
B) Different formula same structure
C) Same everything
D) No carbon
Answer: A
#21 Structural isomers differ in:
A) Connectivity
B) Only spatial 3D always
C) Only colour
D) Atomic number
Answer: A
#22 Benzene formula:
A) C6H6
B) C6H12
C) C6H14
D) C7H8
Answer: A
#23 Aromatic compounds contain:
A) Benzene ring
B) Only single bonds
C) No carbon
D) Only metals
Answer: A
#24 Substitution reaction in alkanes is:
A) Free radical
B) Addition only
C) Elimination only
D) Esterification
Answer: A
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