DPP-5-6 Faculty Copy

DAILY PRACTICE PROBLEMS (DPP) Subject : Organic Chemistry Date : DPP No. 5 to 6 Class : XIII Course : DPP No. 5 DPP No. 1 Max. Time : 54 Total Time : 60 min. Single choice Objective ('–1' negative marking) Q.1 to Q.10 (3 marks 3 min.) [30, 30] Subjective Questions ('–1' negative marking) Q.11 (4 marks 5 min.) [4, 5] Eyes on NCERT Subjective Questions ('–1' negative marking) Q.1 to Q.5 (4 marks 5 min.) [20, 25] 1. The IUPAC name of the given compound is : (1) 2, 2-Dimethylbutanal (2) 3, 3-Dimethylbutanal (3) 1, 1, 1-Trimethylpropanal (4) 3, 3, 3-Trimethylpropanal 2. The IUPAC name of the given compound is : (1) 1-Chloro-3-methylhexan-2-ol (2) 1-Chloro-2-hydroxy-4-methyl hexane (3) 1-Chloro-4-methylpentan-2-ol (4) 1-Chloro-4-methylhexan-2-ol 3. IUPAC name of the given compound is : (1) 2-Ethylpropanamide (2) 1-Amino-3-methylpropane (3) 2-Methybutanamide (4) 3-Methylbutanamdie 4. The IUPAC name of the given structure is : (1) 1, 1, 3-Trimethylpropnane-1, 3-diol (2) 1, 1-Dimethylbutane-1,3-diol (3) 4-Methylpentane-2,4-diol (4) 2-Methylpentane-2,4-diol 5. The IUPAC name of the given structure is : (1) 4-oxo-3-bromo-2-iodopentanoic acid (2) 2-Iodo-3-bromo-4-oxopentanoic acid (3) 3-Bromo-2-iodo-4-oxopentanoic acid (4) 4-Carboxy-3-bromo-4-iodopentanoic acid 6. The name of the given structure is : (1) 2, 4-Dimethylhexan-3-one (2) 2, 6-Dimethylheptan-5-one (3) 2, 6-Dimethylhexan-4-one (4) 2, 6-Dimethylheptan-4-one 7. The IUPAC name of the compound is : (1) 3-Hydroxy-3-methylpentanal (2) 4-Hydroxy-2-methylpentanal (3) 2-Methyl-4-hydroxypentanal (4) 3-Methyl-3-hydroxypentanal 8. The IUPAC name of the given compound is : (1) 3-Amino-2-hydroxypropanoic acid (2) 2-Hydroxy-3-aminopropanoic acid (3) 2-Hydroxy-1-aminopropanoic acid (4) 1-Hydroxy-2-aminopropanoic acid 9. The IUPAC name of the given compound is : (1) 2-Bromo-2-chloro-2-fluoroethanal (3) 2-Fluoro-2-chloro-2-bromoethanal (2) 1-Bromo-1-chloro-2-fluoroethanal (4) 1-Fluoro-1-chloro-1-bromoethanal 10. The IUPAC name of (1) 1-Hydroxy-4-methylpentan-3-one (2) 2-Methyl-5-hydroxypentan-3-one 11. (3) 4-Methyl-3-oxopentan-1-ol Give IUPAC name of the following compounds : (4) Hexan-1-ol-3-one (i) (ii) (iii) (iv) (v) Eyes on NCERT 1. How many  and  bonds are present in each of the following molecules? (a) HC  CCH = CHCH (b) CH = C = CHCH 2. What is the type of hybridisation of each carbon in the following compounds? (a) CH3Cl, (b) (CH3)2CO, (c) CH3CN, (d) HCONH2, (e) CH3CH = CHCN 3. Write the state of hybridisation of carbon in the following compounds and shapes of each of the molecules. (a) H C = O, (b) CH F, (c) HCN. 2 3 4. Expand each of the following condensed formulas into their complete structural formulas. (a) CH3CH2COCH2CH3 (b) CH3CH = CH(CH2)3CH3 5. For each of the following compounds, write a condensed formula and also their bond-line formula. (a) HOCH2CH2CH2CH(CH3)CH(CH3)CH3 (b) DPP No. 6 DPP No. 2 Max. Time : 58 Total Time : 62 min. Single choice Objective ('–1' negative marking) Q.1 to Q.11 (3 marks 3 min.) [33, 33] Multiple choice objective ('–1' negative marking) Q.12 (5 marks 4 min.) [5, 4] Eyes on NCERT Subjective Questions ('–1' negative marking) Q.1 to Q.5 (4 marks 5 min.) [20, 25] 1. The IUPAC name of the compound (1) 3-phenylbutane (2) 3-cyclohexylbutane (3) 2-cyclohexylbutane (4) 2-phenylbutane 2. The IUPAC name of is : (1) 3-methyl cyclohexene (2) 1-methyl cyclohex-2-ene (3) 6-methyl cyclohexene (4) 1-methyl cyclohex-5-ene 3. The correct IUPAC name of the compound is (1) 2-formyl-5-methoxynitrobenzene (2) 4-formyl-3-nitroanisole (3) 4-methoxy-2- nitrobenzaldehyde (4) 4-methoxy-6-nitrobenzaldehyde 4. The IUPAC name of the compound is : (1) Cyclopropionamide (2) N-methyl cyclopropanamide (3) N,N-dimethyl Cyclopropane carboxamide (4) none of the above 5. The IUPAC name of the compound is (1) 3-(3-methycyclopentyl) benzene (2) 1-(3-methylcyclopentyl) benzene (3) 2-(2-methylcyclopentyl) benzene (4) none of these 6. The IUPAC name of the following compound ? (1) 5-ethyl-1-methyl-2-propylcyclohexane (2) 1-ethyl-3-methyl-4-propylcyclohexane (3) 4-ethyl-2-methyl-1-propylcyclohexane (4) 1-propyl-3-ethyl-2-methylcyclohexane 7. What will be the IUPAC name of the above compound ? (1) 1,1,2-trimethylcyclopentane (2) 1,2,2-trimethylcyclopentane (2) 1,1,5-trimethylcyclopentane (4) None of the above 8. Select the correct IUPAC name of the following compound : (1) 2-ethyl-1-chloro cyclohexanol (2) 4-chloro-3-ethylcyclohexanol (3) 4-chloro-5-ethylcyclohexanol (4) 4-hydroxy-2-ethyl-1-chlorocyclohexane 9. Select the correct IUPAC name of the following compound (1) 3-ethyl-1,5-dimethylcyclopentane (2) 1-ethyl-3,4-dimethylcyclopentane (3) 4-ethyl-1,2-dimethylcyclopentane (4) 2-ethyl-4,5-dimethylcyclopentane 10. The IUPAC name of which of the following compounds is not correct ? Compound IUPAC name (1) cyclohexanoic acid (2) 1, 2, 4-benzene tricarboxylic acid (3) 4-methylcyclohexane-carboxylic acid (4) 4-bromobenzoic acid 11. The IUPAC name of is : (1) phenylethanone (2) methylphenylketone (3) acetophenone (4) phenylmethylketone 12. The compound C6H5–CH=CH–COOH may be called as : (1) Succinic acid (2) 3-phenylprop-2-en-1-oic-acid (3) mandelic acid (4) cinnamic acid Eyes on NCERT 1. Expand each of the following bond-line formulas to show all the atoms including carbon and hydrogen : (a) (b) (c) (d) 2. Structures and IUPAC names of some hydrocarbons are given below. Explain why the names given in the parentheses are incorrect. (a) (b) (b) 3. Write the IUPAC names of the compounds i-iv from their given structures. (i) (ii) (iii) (iv) 4. Derive the structure of (i) 2-Chlorohexane, (ii) Pent-4-en-2-ol, (iii) 3- Nitrocyclohexene, (iv) Cyclohex-2-en-1-ol, (v) 6-Hydroxyheptanal. 5. Write the structural formula of : (a) o-Ethylanisole, (b) p-Nitroaniline, (c) 2,3 - Dibromo -1 - phenylpentane, (d) 4-Ethyl-1-fluoro-2-nitrobenzene. ANSWER KEY DPP No. 3 1. 1 2. 4 3. 3 4. 2 5. 1 6. 2 7. 3 8. 3 9. 4 10. 1 11. 3,4 12. (a) 2 2-Dimethylpentane (d) 5-(2-Ethylbutyl)-3,3-dimethyldecane (b) 2, 4, 7- Trimethyloctane (e) 2, 5, 6- Trimethyloctane (c) 2-Chloro-4-methylpentane (f) 3-Ethyl-5-methylheptane DPP No. -4 1. 4 2. 1 3. 1 4. 4 5. 4 6. 2 7. 2 8. 3 9. 1 10. 1,3 11. (1) 5-Ethyl -4,4- dimethyloctane (2) 2, 5-Dimethylheptane (3) 2,3–Dimethyl–5–(2–methylpropyl)nonane (4) 6–(1,2–Dimethylpropyl)–4–propyldecane 12. (1) (2) (3)