CARBONYL Q.1 Which one of the following is mixed ketone: O O || || (A) CH3 C CH3 O || (C) C6H5 C CH3 (B) CH3 CH2 C CH3 O || (D) CH3 C6H4 C C6H5 (P) Q.2 In which of the following reactions product will be aldehyde? (A) CH3 C C C2H5 (i) O3 (B) CH3–CH=CH2 CO /H2/ CO2 (CO)8 | CH3 | CH3 (ii) H2O / Zn (C) CH –CH=CH B2H6 (D) CH –CCH HOH/ HgSO4 /H2SO4 3 2 NaOH,H O 3 Q.3 Gem dihalide on hydrolysis gives: (A) Vic diol (B) Gem diol (C) Carbonyl compound (D) Carboxylic acid Q.4 Which one of the following alcohols cannot be oxidised by K2CrO4? (A) Ethanol (B) Tert butyl alcohol (C) Isopropyl alcohol (D) Allyl alcohol Q.5 In the given reaction: OH OH | | CH3 CH — C CH3 | CH3 (a) and (b) respectively be: HIO4 (a) + (b) (A) CH3CHO and CH3CHO (B) CH3COCH3 and CH3CHO (C) CH3COCH3 and CH3COCH3 (D) CH3COOH and CH3COCH3 Q.6 Acetophenone can be obtained by the distillation of: (A) (C6H5COO)2Ca (B) (CH3COO)2Ca (C) (C6H5COO)2Ca and (CH3COO)2Ca (D) (C6H5COO)2Ca and (HCOO)2Ca Q.7 Arrange these compounds in decreasing order of reactivity for the nucleophilic addition reaction: (I) Acid chloride (II) Aldehyde (III) Ketone (IV) Ester Select the correct answer from the codes given below: (A) I > II > III > IV (B) IV > III > II > I (C) III > II > I > IV (D) I > IV > II > III Q.8 Two isomeric ketones, 3-pentanone and 2-pentanone can be distinguished by : (A) I2 / NaOH only (B) NaSO3H only (C) NaCN / HCl (D) Both (A) and (B) Q.9 Acetal or ketal is: (A) Vic dialkoxy compound (B) , -dialkoxy compound (C) -alkoxy alcohol (D) Gem dialkoxy compound Q.10 In the given reaction O || (i) LiAlH CH3 CH2 C CH 2COOC 2H5 [X] (A) 4 (ii) H2O / H [X] will be: O || CH3 CH2 C CH2 CH2OH C2H5OH CH2 OH (A) HCHO (B) CH2 OH | CH2OH + H (C) | + CH2 OH (D) HCN Q.11 Consider the structure of given alcohol: OH | C6H5 C CH3 | C2H5 This alcohol can be prepared from: O O || || (A) C6H5 C CH3 and C2H5MgBr (B) CH3 CH2 C CH3 and C6H5MgBr O || (C) C6H5 C C2H5 and CH3MgBr (D) All of these Q.12 Stability of gemdiol depends on: (A) Steric hindrance (B) Presence of –I group on gemdiol carbon (C) Intramolecular hydrogen bonding (D) All of these Q.13 In the reaction sequence: C6H5 C CH3 || O NH2OH/ H [X] PCl5 [Y] [Y] will be: O O || || (A) C6H5 C NHCH3 O || (C) C6H5 CH2 C NH2 (B) CH3 C NH C6H5 (D) Mixture of (A) and (B) Q.14 In the given reaction: C6H5 C H || O NH2OH / H [X] [X] will be: (A) Only syn oxime (B) Only anti oxime (C) mixture of syn and anti oxime (D) secondary amide Q.15 Schiff's base is prepared from: (A) Carbonyl compound and primary amine (B) Carbonyl compound and secondary amine (C) Carbonyl compound and tertiary amine (D) All of these Q.16 Schiff's reagent is used for the differentiation between: (A) HCHO and CH3CHO
CARBONYL Q.1 Which one of the following is mixed ketone: O O || || (A) CH3 C CH3 O || (C) C6H5 C CH3 (B) CH3 CH2 C CH3 O || (D) CH3 C6H4 C C6H5 (P) Q.2 In which of the following reactions product will be aldehyde? (A) CH3 C C C2H5 (i) O3 (B) CH3–CH=CH2 CO /H2/ CO2 (CO)8 | CH3 | CH3 (ii) H2O / Zn (C) CH –CH=CH B2H6 (D) CH –CCH HOH/ HgSO4 /H2SO4 3 2 NaOH,H O 3 Q.3 Gem dihalide on hydrolysis gives: (A) Vic diol (B) Gem diol (C) Carbonyl compound (D) Carboxylic acid Q.4 Which one of the following alcohols cannot be oxidised by K2CrO4? (A) Ethanol (B) Tert butyl alcohol (C) Isopropyl alcohol (D) Allyl alcohol Q.5 In the given reaction: OH OH | | CH3 CH — C CH3 | CH3 (a) and (b) respectively be: HIO4 (a) + (b) (A) CH3CHO and CH3CHO (B) CH3COCH3 and CH3CHO (C) CH3COCH3 and CH3COCH3 (D) CH3COOH and CH3COCH3 Q.6 Acetophenone can be obtained by the distillation of: (A) (C6H5COO)2Ca (B) (CH3COO)2Ca (C) (C6H5COO)2Ca and (CH3COO)2Ca (D) (C6H5COO)2Ca and (HCOO)2Ca Q.7 Arrange these compounds in decreasing order of reactivity for the nucleophilic addition reaction: (I) Acid chloride (II) Aldehyde (III) Ketone (IV) Ester Select the correct answer from the codes given below: (A) I > II > III > IV (B) IV > III > II > I (C) III > II > I > IV (D) I > IV > II > III Q.8 Two isomeric ketones, 3-pentanone and 2-pentanone can be distinguished by : (A) I2 / NaOH only (B) NaSO3H only (C) NaCN / HCl (D) Both (A) and (B) Q.9 Acetal or ketal is: (A) Vic dialkoxy compound (B) , -dialkoxy compound (C) -alkoxy alcohol (D) Gem dialkoxy compound Q.10 In the given reaction O || (i) LiAlH CH3 CH2 C CH 2COOC 2H5 [X] (A) 4 (ii) H2O / H [X] will be: O || CH3 CH2 C CH2 CH2OH C2H5OH CH2 OH (A) HCHO (B) CH2 OH | CH2OH + H (C) | + CH2 OH (D) HCN Q.11 Consider the structure of given alcohol: OH | C6H5 C CH3 | C2H5 This alcohol can be prepared from: O O || || (A) C6H5 C CH3 and C2H5MgBr (B) CH3 CH2 C CH3 and C6H5MgBr O || (C) C6H5 C C2H5 and CH3MgBr (D) All of these Q.12 Stability of gemdiol depends on: (A) Steric hindrance (B) Presence of –I group on gemdiol carbon (C) Intramolecular hydrogen bonding (D) All of these Q.13 In the reaction sequence: C6H5 C CH3 || O NH2OH/ H [X] PCl5 [Y] [Y] will be: O O || || (A) C6H5 C NHCH3 O || (C) C6H5 CH2 C NH2 (B) CH3 C NH C6H5 (D) Mixture of (A) and (B) Q.14 In the given reaction: C6H5 C H || O NH2OH / H [X] [X] will be: (A) Only syn oxime (B) Only anti oxime (C) mixture of syn and anti oxime (D) secondary amide Q.15 Schiff's base is prepared from: (A) Carbonyl compound and primary amine (B) Carbonyl compound and secondary amine (C) Carbonyl compound and tertiary amine (D) All of these Q.16 Schiff's reagent is used for the differentiation between: (A) HCHO and CH3CHO