1. The number of σ and π bonds present in 
1) 12σ, 4π 2) 8σ, 4π 3) 16σ, 4π 4) 12σ, 3π
2. The ratio of hybrid orbitals to unhybrid orbitals in 1, 3 - butadiene is
1) 8 : 3 2) 6 : 5 3) 5 : 6 4) 3 : 8
3. The IUPAC name of the compound having 
1) 3, 3 - dimethyl butene 2) 3 - methyl 3 - ethyl butene
3) 3, 3 - dimethyl butene 4) 3, 3 - dimethyl pent -1 - ene
4. The IUPAC name of the compound is
1) 2 - ethyl 5 - methyl 3 - oxo hept - 5 - enal
2) 5 - ethyl 3 - methyl 5 - oxo hept - 2 - enal
3) 3 - methyl 5 - oxo 6 - formyl oct - 2 - ene
4) 6 - methyl 3 - formyl 4 - oxo oct - 6 - ene
5. Which of the following represents. 2, 3 - dichloro butanoic acid 
6. The IUPAC name of the compound 
1) 1 - chloro 3 - methyl cyclohexene
2) 1 - methyl 3 - chloro cyclohexene
3) 3 - methyl 3 - chloro cyclohexene
4) 1 - chloro 5 - methyl cyclohexene
7. The compound shown below has a molecular formula C2H3Cl3. Identify any structure below represents the constitutional isomer of the compound shown below. 
8. Propene and cyclopropane are
1) Position isomers 2) Metamers
3) Ring Chain isomers 4) Geometrical isomers
9. The IUPAC name of
1) 1 - bromo 1 - oxo 2, 3 - dimethyl pentane
2) 2 - ethyl 3 - methyl butanoyl bromide
3) 3, 4 - dimethyl pentanoyl bromide
4) 2, 3 - dimethyl pentanoyl bromide
10. Which of the following IUPAC names is not correctly matched?
11. Match the Column I with Column II and mark the appropriate choice.
Column - I Column II 
1) A-iv, B-i, C-ii D-iii 2) A-iii, B- I, C-iv, D-ii
3) A-ii, B-iv, C-iii, D-i 4) A-iii, B-iv, C-ii, D-i
12. Hyper conjugation is
1) No bond resonance 2) Delocalisation of π electrons
3) Permanent displacement of σ bonded electrons 4) All
13. Which of the following is the correct order of acidity of carboxylic acids?
1) acetic acid < fluoroacetic acid < bromoacetic acid
2) acetic acid < bromoacetic acid < fluoroacetic acid
3) bromoacetic acid < acetic acid < fluoroacetic acid
4) bromo acetic acid < fluroacetic acid < acetic acid
14. The hybridisation of carbon in + CH3, • CH3, C H3 are
1) sp2, sp3, sp2 2) sp2, sp2, sp2 3) sp2, sp2, sp3 4) sp3, sp3, sp3
15. The correct order of stability of carbon ions is
16. Which of the following is a characteristic feature of a free radical
1) It is a negatively charged species
2) It is a positively charged species
3) It is a unpaired electron containing species
4) None
17. The number of isomers in C4H10O are
1) 7 2) 8 3) 5 4) 6
18. Lassaigne’s test is used in qualitative analysis to detect
1) Carbon 2) Nitrogen 3) Hydrogen 4) All
19. Stability of carbocations is explained by
1) Resonance 2) Electromeric effect 3) Inductive effect 4) Both 1 and 2
20. An organic compound gave 0.931g of CO2 on complete combustion. If the mass of the compound taken was 0.4230 g. Percentage of C in the compound is
1) 60% 2) 27% 3) 28.9% 4) 15%
21. In Duma’s method 0.52 g of an organic compound on combustion gave 68.6 ml N2 at 27°C and 756 mm pressure. The percentage of nitrogen in the compound is
1) 12.22% 2) 14.9% 3) 15.84% 4) 16.23%
22. When methane is oxidized in the presence of Mo2O3 forms
1) CO2, H2O 2) Methanol 3) Methanal 4) Acetic acid
23. The number of chain isomers possible for hydrocarbon C6H14 is
1) 3 2) 5 3) 4 4) 6
24. The major constituent of Natural gas is
1) Methane 2) Hexane 3) Butane 4) Propane
25. Which of the following method is not useful for preparation of methane?
1) Decarboxylation 2) Clemenson’s reduction 3) Wurtz reaction 4) Wolf-Kishner’s reduction
26. The major product formed when 1- butene is treated with HCl in presence of H2O2 is
1) 2 - chloro butane 2) 1 - chloro butane 3) 3 - chloro 1 - butene 4) 4 - chloro butane
29. An alkene on ozonolysis, followed by hydrolysis with Zn/H2O gives 2 moles of ethanal. Alkene is
1) 1- butene 2) 2 - butene 3) propene 4) 1 - pentene
30. An alkane having molecular formula C5H12 gave only one mono halogenative product on halogenation. IUPAC name of alkane
1) 2 - methyl butane 2) 3 - methyl pentane
3) 2, 2 - dimethyl propane 4) 3, 3 - dimethyl butane
31. In the reaction 
1) 2 - methyl - 2 - butene 2) 2 - methyl pentane
3) 2 - methyl pent - 2 - ene 4) No reaction
33. When 2 - butyne is treated with Na/ liq.NH3 forms
1) Butane 2) Cis – 2 – butene
3) Trans – 2 – butene 4) Both 3 and 4
35. Propyne gas is passed through red hot copper tube forms
1) Benzene 2) Methyl benzene
3) 1, 3 - dimethyl benzene 4) 1, 3, 5 - trimethyl benzene
36. Identify Z in the following reaction 
1) CH3CH2 CH2OCH2CH3 2) (CH3)2 CHO CH2 CH3
3) CH3CH2OCH2CH3 4) CH3CH2 CH2OCH2CH2CH3
37. Which of the following will exhibit geometrical isomerism?
1) 2 - butene 2) 2 - butyne 3) 1 - butyne 4) butane
Answers: 1-3; 2-2; 3-4; 4-1; 5-2; 6-1; 7-1; 8-3; 9-4; 10-3; 11-1; 12-1; 13-2; 14-3; 15-3; 16-3; 17-1; 18-2; 19-3; 20-1; 21-2; 22-3; 23-2; 24-1; 25-3; 26-1; 27-2; 28-4; 29-2; 30-3; 31-2; 32-1; 33-3; 34-2; 35-4; 36-1; 37-1.
