General
✓✗Match List I (name reaction) with List II (reactants).
Choose the correct answer from the options given below.
| List I | List II |
| P. Kolbe’s reaction | I. Phenol, CHCl3, NaOH |
| Q. Reimer−Tiemann reaction | II. Sodium phenoxide, CO2, 400 K, 4−7 atm |
| R. Williamson synthesis | III. Cumene, O2; H3O+ |
| S. Cumene process | IV. Sodium alkoxide, alkyl halide |
- P-II, Q-I, R-IV, S-III
- P-IV, Q-I, R-II, S-III
- P-I, Q-II, R-IV, S-III
- P-II, Q-I, R-III, S-IV
General
✓✗Consider the following reaction and identify the major product P:
3-methylbutan-2-ol, CH3−CH(CH3)−CH(OH)−CH3 \( \xrightarrow{\;\text{HBr}\;} \) P
3-methylbutan-2-ol, CH3−CH(CH3)−CH(OH)−CH3 \( \xrightarrow{\;\text{HBr}\;} \) P
- CH3CH(CH3)CH(Br)CH3 (2-bromo-3-methylbutane)
- (CH3)2C=CHCH3 (2-methylbut-2-ene)
- (CH3)3CCH2Br (1-bromo-2,2-dimethylpropane)
- (CH3)2C(Br)CH2CH3 (2-bromo-2-methylbutane)
General
✓✗The compound which does not react with sodium is
- CH3COOH
- CH3OCH3
- CH3CHOHCH3
- C2H5OH
General
✓✗Which one of the following will not form a yellow precipitate on heating with an alkaline solution of iodine?
- CH3CH2OH
- CH3CH2CH(OH)CH3
- CH3OH
- CH3CH(OH)CH3
General
✓✗The boiling points of alcohols increase with
- presence of a double bond
- increase in the number of carbon atoms
- decrease in molecular mass
- increase in branching
General
✓✗When phenol is treated with excess bromine water, it gives
- 2,4-dibromophenol
- 2,4,6-tribromophenol
- o- and p-bromophenols
- m-bromophenol
General
✓✗The reaction (CH3)3C−ONa + CH3CH2Cl → (CH3)3C−O−CH2CH3 + NaCl is called
- Williamson continuous etherification process
- Gattermann−Koch reaction
- Williamson synthesis
- Etard reaction
General
✓✗Alcohols react with SOCl2 to give
- alkyl chlorides
- aldehydes
- alkenes
- ethers
General
✓✗Oxidation of propan-2-ol with acidified K2Cr2O7 gives
- propanone
- propene
- propanal
- propanoic acid
General
✓✗The rate of reaction of alcohols with HBr follows the order
- (CH3)3COH > (CH3)2CHOH > CH3CH2OH > CH3OH
- (CH3)2CHOH > (CH3)3COH > CH3OH > CH3CH2OH
- CH3OH > CH3CH2OH > (CH3)2CHOH > (CH3)3COH
- CH3CH2OH > CH3OH > (CH3)3COH > (CH3)2CHOH
General
✓✗Among the following, the best leaving group in the reactions of alcohols is
- H2O (from protonated OH)
- OH−
- H−
- CH3−
General
✓✗The total number of possible isomers (both structural and stereoisomers) of cyclic ethers of molecular formula C4H8O is
- 10
- 8
- 11
- 6
General
✓✗Williamson synthesis proceeds by
- SN1 ionisation of the alkoxide
- electrophilic addition
- SN2 attack of an alkoxide ion on an alkyl halide
- free-radical combination
General
✓✗How many moles of acetyl chloride react completely with one mole of glycerol (propane-1,2,3-triol)?
- 1
- 2
- 4
- 3
General
✓✗The alkene R−CH=CH2 reacts readily with B2H6 and the product on oxidation with alkaline hydrogen peroxide produces
- R−CH2−CH2−OH
- R−CO−CH3
- R−CH(OH)−CH2OH
- R−CH2−CHO