

MCQOPTIONS
This section includes 50 Mcqs, each offering curated multiple-choice questions to sharpen your VITEEE knowledge and support exam preparation. Choose a topic below to get started.
1. |
RMgBr on reaction with an excess of oxygen followed by hydrolysis gives [Roorkee Qualifying 1998] |
A. | RH |
B. | ROOR |
C. | ROOH |
D. | ROH |
Answer» E. | |
2. |
Reaction of aqueous sodium hydroxide on (i) ethyl bromide and (ii) chlorobenzene gives |
A. | (i) Ethene and (ii) o-chlorophenol |
B. | (i) Ethyl alcohol and (ii) o-chlorophenol |
C. | (i) Ethyl alcohol and (ii) phenol |
D. | (i) Ethyl alcohol an d(ii) no reaction |
Answer» D. (i) Ethyl alcohol an d(ii) no reaction | |
3. |
Which one is not synthesized by Grignard reagent [MP PET 1991] |
A. | Primary alcohol |
B. | Secondary alcohol |
C. | A ketone |
D. | An ester |
Answer» E. | |
4. |
Phenol is obtained by heating aqueous solution of [MP PMT 1995] |
A. | Aniline |
B. | Benzene diazonium chloride |
C. | Benzoic acid |
D. | None of these |
Answer» C. Benzoic acid | |
5. |
Sodium benzene sulphonate reacts with NaOH and then on acidic hydrolysis, it gives [Roorkee 1995; KCET 1998] |
A. | Phenol |
B. | Benzoic acid |
C. | Benzene |
D. | Disodium benzaldehyde |
Answer» B. Benzoic acid | |
6. |
Acetone on treatment with CH3−Mg−I and on further hydrolysis gives [UPSEAT 2000] |
A. | Isopropyl alcohol |
B. | Primary alcohol |
C. | Acetic acid |
D. | 2-methyl 2-propanol |
Answer» E. | |
7. |
Oil +NaOH(aq)−→Δ Glycerol + Soap Above reaction is called [UPSEAT 2001] |
A. | Saponification |
B. | Esterification |
C. | Hydrogenation |
D. | None of these |
Answer» B. Esterification | |
8. |
Grignard reagent reacts with compounds containing which of the following groups [MNR 1987] |
A. | >C=O |
B. | −C≡N |
C. | >C=S |
D. | All of these |
Answer» E. | |
9. |
Absolute alcohol can be obtained from rectified spirit [KCET 1985] |
A. | By removing the water in it using concentrated sulphuric acid |
B. | By removing the water using phosphorus pentoxide |
C. | By distilling with the appropriate amount of benzene |
D. | By distilling over plenty of quick lime |
Answer» D. By distilling over plenty of quick lime | |
10. |
Maltose on hydrolysis gives [BHU 1996; CPMT 2001] |
A. | Mannose + glucose |
B. | Galactose + glucose |
C. | Glucose |
D. | Mannose + fructose |
Answer» D. Mannose + fructose | |
11. |
Phenolphthalein is obtained by heating phthalic anhydride with conc. H2SO4 and [BHU 1996] |
A. | Benzyl alcohol |
B. | Benzene |
C. | Phenol |
D. | Benzoic acid |
Answer» D. Benzoic acid | |
12. |
The reaction, water gas (CO+H2)+H2673K,300 atmosphere in presence of the catalyst Cr2O3/ZnO is used for the manufacture of [MP PMT 1989] |
A. | HCHO |
B. | HCOOH |
C. | CH3OH |
D. | CH3COOH |
Answer» D. CH3COOH | |
13. |
An organic compound dissolved in dry benzene evolved hydrogen on treatment with sodium. It is [NCERT 1981; SCRA 1990] |
A. | A ketone |
B. | An aldehyde |
C. | A tertiary amine |
D. | An alcohol |
Answer» E. | |
14. |
If formaldehyde and potassium hydroxide are heated, then we get [CPMT 1989, 90; KCET 2000] |
A. | Acetylene |
B. | Methane |
C. | Methyl alcohol |
D. | Ethyl formate |
Answer» D. Ethyl formate | |
15. |
Salicylaldehyde can be prepared from [CPMT 1983] |
A. | Phenol and chloroform |
B. | Phenol, chloroform and sodium hydroxide |
C. | Phenol, carbon tetrachloride and NaOH |
D. | None of these |
Answer» C. Phenol, carbon tetrachloride and NaOH | |
16. |
The reaction given below is known as C2H5ONa+IC2H5→C2H5OC2H5+NaI [CPMT 1990; KCET 1990; MH CET 2003; Pb. CET 2002] |
A. | Kolbes synthesis |
B. | Wurtzs synthesis |
C. | Williamsons synthesis |
D. | Grignards synthesis |
Answer» D. Grignards synthesis | |
17. |
Benzene diazonium chloride on boiling with dilute sulphuric acid gives [MP PMT 1983] |
A. | Toluene |
B. | Benzoic acid |
C. | Benzene |
D. | Phenol |
Answer» E. | |
18. |
Benzyl alcohol is obtained from benzaldehyde by [CPMT 1983; MNR 1993] |
A. | Fittigs reaction |
B. | Cannizaros reaction |
C. | Kolbes reaction |
D. | Wurtzs reaction |
Answer» C. Kolbes reaction | |
19. |
Formaldehyde gives an additive product with methyl magnesium iodide which on aqueous hydrolysis gives [MP PMT/PET 1988] |
A. | Isopropyl alcohol |
B. | Ethyl alcohol |
C. | Methyl alcohol |
D. | Propyl alcohol |
Answer» C. Methyl alcohol | |
20. |
LiAlH4 converts acetic acid into [CPMT 1977; MP PMT 1990, 92] |
A. | Acetaldehyde |
B. | Methane |
C. | Ethyl alcohol |
D. | Methyl alcohol |
Answer» D. Methyl alcohol | |
21. |
On heating aqueous solution of benzene diazonium chloride, which is formed [CPMT 1988; BHU 1980] |
A. | Benzene |
B. | Chlorobenzene |
C. | Phenol |
D. | Aniline |
Answer» D. Aniline | |
22. |
Primary alcohols can be obtained from the reaction of the RMgX with [Pb. PMT 2001] |
A. | CO2 |
B. | HCHO |
C. | CH3CHO |
D. | H2O |
Answer» C. CH3CHO | |
23. |
In the commercial manufacture of ethyl alcohol from starchy substances by fermentation method, which enzymes stepwise complete the fermentation reaction [BIT 1992] |
A. | Diastase, maltase and zymase |
B. | Maltase, zymase and invertase |
C. | Diastase, zymase and lactase |
D. | Diastase, invertase and zymase |
Answer» B. Maltase, zymase and invertase | |
24. |
Chlorination of toluene in the presence of light and heat followed by treatment with aqueous NaOH gives [IIT-JEE 1990] |
A. | o-cresol |
B. | p-cresol |
C. | 2, 4-dihydroxy toluene |
D. | Benzyl alcohol |
Answer» E. | |
25. |
Which enzyme converts glucose and fructose both into ethanol [MP PMT 1989, 90, 96; CPMT 1983, 84, 86, 94; KCET 1989; MNR 1978; MP PET 1994, 99] |
A. | Diastase |
B. | Invertase |
C. | Zymase |
D. | Maltase |
Answer» D. Maltase | |
26. |
Coconut oil upon alkaline hydrolysis gives [MP PET 1991; AFMC 2000; KCET 2001; BCECE 2005] |
A. | Glycol |
B. | Alcohol |
C. | Glycerol |
D. | Ethylene oxide |
Answer» D. Ethylene oxide | |
27. |
The fermentation of starch to give alcohol occurs mainly with the help of [CPMT 1971; MH CET 1999; RPMT 2000] |
A. | O2 |
B. | Air |
C. | CO2 |
D. | Enzymes |
Answer» E. | |
28. |
Which one of the following will produce a primary alcohol by reacting with CH3MgI [MP PET 1991] |
A. | Acetone |
B. | Methyl cyanide |
C. | Ethylene oxide |
D. | Ethyl acetate |
Answer» D. Ethyl acetate | |
29. |
Propene, CH3−CH=CH2 can be converted to 1-propanol by oxidation. Which set of reagents among the following is ideal to effect the conversion [CBSE PMT 1991] |
A. | Alkaline KMnO4 |
B. | B2H6 and alkaline H2O2 |
C. | O3/Zn dust |
D. | OsO4/CH4,Cl2 |
Answer» C. O3/Zn dust | |
30. |
Ethyl alcohol is industrially prepared from ethylene by [CPMT 1985] |
A. | Permanganate oxidation |
B. | Catalytic reduction |
C. | Absorbing in H2SO4 followed by hydrolysis |
D. | Fermentation |
Answer» D. Fermentation | |
31. |
Ethanol is prepared industrially by [MP PMT 1989]Ethanol is prepared industrially by [MP PMT 1989] |
A. | Hydration of ethylene |
B. | Fermentation of sugars |
C. | Both the above |
D. | None of these |
Answer» D. None of these | |
32. |
Methyl phenyl ether can be obtained by reacting |
A. | phenolate ions and methyl iodide |
B. | methoxide ions and bromobenzene |
C. | methanol and phenol |
D. | bromobenzene and methyl bromide |
Answer» B. methoxide ions and bromobenzene | |
33. |
Methanol cannot be dried with anhydrous CaCl2 because |
A. | CaCl2 dissolves in it |
B. | it is not good dehydrating agent |
C. | it forms a solid CaCl2 × 4CH3OH |
D. | it reacts with CH3OH |
Answer» D. it reacts with CH3OH | |
34. |
In Williamson's synthesis |
A. | an alcohol is heated with conc. H2SO4 at 140°C |
B. | an alkyl halide is treated with sodium |
C. | an alkyl halide is treated with sodium alkoxide |
D. | None of the above |
Answer» D. None of the above | |
35. |
In preparation of alkene from alcohol using Al2O3 which is effective factor: |
A. | Porosity of Al2O3 |
B. | Temperature |
C. | Concentration |
D. | Surface area of Al2O3 |
Answer» C. Concentration | |
36. |
From amongst the following alcohols the one that would react fastest with conc. HCl and anhydrous ZnCl2, is |
A. | 2-Methylpropan-2-ol |
B. | 2-Butanol |
C. | 1-Butanol |
D. | 2-Methylpropanol |
Answer» B. 2-Butanol | |
37. |
Formation of diethyl ether from ethanol is based on a |
A. | dehydration reaction |
B. | dehydrogenation reaction |
C. | hydrogenation reaction |
D. | heterolytic fission reaction |
Answer» B. dehydrogenation reaction | |
38. |
Ethyl chloride is converted into diethyl ether by |
A. | Perkins reaction |
B. | Grignard reagent |
C. | Wurtz reaction |
D. | Williamsons synthesis |
Answer» E. | |
39. |
Denatured alcohol is |
A. | Rectified spirit + methanol + naphtha |
B. | Undistilled ethanol |
C. | Rectified spirit |
D. | Ethanol + methanol |
Answer» B. Undistilled ethanol | |
40. |
Among the following, which one cannot be formed as a product under any conditions? |
A. | Ethylene |
B. | Ethyl-hydrogen sulphate |
C. | Diethyl ether |
D. | Acetylene |
Answer» E. | |
41. |
Chloro ethane reacts with X to form diethyl ether. What is X |
A. | NaOH |
B. | H2SO4 |
C. | C2H5ONa |
D. | Na2S2O3 |
Answer» D. Na2S2O3 | |
42. |
Catalytic dehydrogenation of a primary alcohol gives a |
A. | ketone |
B. | aldehyde |
C. | secondary alcohol |
D. | ester |
Answer» C. secondary alcohol | |
43. |
Anisole can be prepared by the action of methyl iodide on sodium phenate. The reaction is called |
A. | Fittig’s reaction |
B. | Williamson’s reaction |
C. | Wurtz’s reaction |
D. | Etard’s reaction |
Answer» D. Etard’s reaction | |
44. |
An oxygen containing organic compound upon oxidation forms a carboxylic acid as the only organic product with its molecular mass higher by 14 units. The organic compound is ______. |
A. | a ketone |
B. | an aldehyde |
C. | a primary alcohol |
D. | a secondary alcohol |
Answer» D. a secondary alcohol | |
45. |
An organic compound A(C4H9Cl) on reaction with Na/diethyl ether gives a hydrocarbon which on monochlorination gives only one chloro derivative then, A is: |
A. | iso-butyl chloride |
B. | secondary butyl chloride |
C. | t-butyl chloride |
D. | n-butyl chloride |
Answer» D. n-butyl chloride | |
46. |
An organic compound A containing C, H and O has a pleasant odour with boiling point of 78°C. On boiling A with concentrated H2SO4, a colourless gas is produced gas is produced which decolourises bromine water and alkaline KMnO4. The organic liquid A is |
A. | C2H5COOCH3 |
B. | C2H5OH |
C. | C2H5Cl |
D. | C2H6 |
Answer» C. C2H5Cl | |
47. |
An ether is more volatile than an alcohol having the same molecular formula. This is due to |
A. | dipolar character of ethers |
B. | alcohols having resonance structures |
C. | inter-molecular hydrogen bonding in ethers |
D. | inter-molecular hydrogen bonding in alcohols |
Answer» E. | |
48. |
Among the following, which is least acidic? |
A. | phenol |
B. | o-cresol |
C. | p-nitrophenol |
D. | p-chlorophenol |
Answer» C. p-nitrophenol | |
49. |
Among the alkenes which one produces tertiary butyl alcohol on acid hydration |
A. | (CH3)2C = CH2 |
B. | CH3 – CH = CH – CH3 |
C. | CH3 – CH2 – CH = CH2 |
D. | CH3 – CH = CH2 |
Answer» B. CH3 – CH = CH – CH3 | |
50. |
Acid catalysed hydration of alkenes except ethene leads to the formation of |
A. | mixture of secondary and tertiary alcohols |
B. | mixture of primary and secondary alcohols |
C. | secondary or tertiary alcohol |
D. | primary alcohol |
Answer» D. primary alcohol | |