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B
2o amides
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C
3o amides
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D
none of these
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Solution
The correct option is A1o amides
Primary amides are also called as 10 amides. Secondary amides are also called as 20 amides. Tertiary amides are also called as 30 amides. A primary amide has general formula RCO−NH2. A secondary amide has general formula RCO−NHR. A tertiary amide has general formula RCO−NR2. CH3CONH2 is a primary amide. CH3CO−NHCH3 is a secondary amide. CH3CO−N(CH3)CH2CH3 is a tertiary amide.