The compound that will not form a yellow precipitate on heating with an alkaline solution of iodine is:
1. CH3CH(OH)CH3
2. CH3CH2CH(OH)CH3
3. CH3OH
4. CH3CH2OH
n-Propyl alcohol and iso-propyl alcohol can be distinguished by -
1.
2. reduction
3. oxidation with potassium dichromate
4. ozonolysis
In the following sequence of reactions,
ABC
the end product C is
1. acetone
2. methane
3. acetaldehyde
4. ethyl alcohol
The precise formulation of Lucas reagent consists of :
1. conc. HCl and anhydrous ZnCl2
2. conc. HNO3 and anhydrous ZnCl2
3. conc. HCl and hydrous ZnCl2
4. conc. HNO3 and hydrous ZnCl2
The decreasing order of boiling points of \(1^\circ\), \(2^\circ\), and \(3^\circ\) alcohol is-
1. \(1^\circ\)> \(2^\circ\)> \(3^\circ\)
2. \(3^\circ\)> \(2^\circ\)> \(1^\circ\)
3. \(2^\circ\) > \(1^\circ\) > \(3^\circ\)
4. None of the above
An organic compound having molecular formula C7H8O is neither soluble in NaOH nor gives blue color with FeCl3. The compound is:
1. C6H5.CH2OH
2.
3. C6H5.OCH3
4. None of these
Which one of the following on oxidation gives a ketone?
1. Primary alcohol 2. Secondary alcohol
3. Tertiary alcohol 4. All of these
In the following sequence of reactions, the product (C) is:
CH3CHO (A) (B) (C)
1. Alcohol.
2. Ether.
3. Alkene.
4. None of the above.
The formula of phenoxy benzene is-
1. C6H5C6H5
2. C6H5-O-C6H5
3. C6H5-O-C6H6
4. None of the above
Ether and benzene can be separated by:-
1. Filtration
2. Distillation
3. Crystallization
4. Sublimation
Primary alcohols can be obtained from the reaction of the RMgX with:
1. HCHO
2. H2O
3. CO2
4. CH3CHO
Consider the following reaction,
Ethanol XYZ
product Z is:
1. CH2=CH2
2. CH3CH2OCH2CH3
3. CH3CH2OSO3H
4. CH3CH2OH
Glycol condenses with ketones to give:
1. Cyclic acetals
2. Cyclic ketals
3. Acetaldehyde
4. oxalic acid
Given is a reaction for your reference:
\(CH_3CH_2CH_2OH \xrightarrow[160\ - \ 180 ^\circ C]{Conc.\ H_2SO_4}\ X\ \xrightarrow{Br_2}\ Y\)
\( Y\ \xrightarrow[2.\ NaNH_2]{1.\ Alc.\ KOH}\ Z\)
The final product Z is:
1. | 2. | ||
3. | 4. | \(CH_3-C\equiv CH\) |
Ethyl propanoate on reduction with LiAlH4 yields:
1. Methanol
2. Ethanol and Propanol
3. Propane
4. Mixture of ethanol and methanol
An alcohol that give CH3COOH and CH3CH2COOH upon oxidation is:
1. CH3CH2CH2OH
2. (CH3)2C(OH)CH2CH3
3. CH3(CH2)2CHOH
4. CH3CH(OH)CH2CH2CH3
The reagent that can convert CH3-CH=CH2 into 1-propanol by oxidation is -
1. KMnO4 (alkaline)
2. Osmium tetroxide (OsO4/CH2Cl2)
3. B2H6 and alk H2O2
4. O3/Zn
Compound that is not an alcohol-
1. CH2=CHCH2OH
2. CH2OHCH2OH
3. C6H5CH2OH
4. C6H5OH
Rectified spirit contains:
1. 75.0 % alcohol 2. 85.5% alcohol
3. 95.6 % alcohol 4. 100.0% alcohol
Isopropyl alcohol and n-propyl alcohol are:
1. Position isomers
2. Chain isomers
3. Functional isomers
4. None of the above
Fenton's reagent is:
1. H2O + FeSO4
2. H2O2 + FeSO4
3. H2O2 + ZnSO4
4. NaOH + FeSO4
Resorcinol and conc. H2SO4 in presence of phthalic anhydride produce a compound which is:
1. a dye 2. an antiseptic
3. an indicator 4. a detergent
Ethylene oxide when treated with Grignard reagent yields
1. secondary alcohol 2. tertiary alcohol
3. cyclopropyl alcohol 4. primary alcohol
The general molecular formula, which represents the homologous series of alkanols is
1. CnH2nO2 2. CnH2nO
3. CnH2n+1O 4. CnH2n+2O
Tautomerism is not exhibited by-
1.
2.
3.
4.
The reaction products of C6H5-O-CH3+ HI
1. C6H5OH + CH3l
2. C6H5l + CH3OH
3. C6H5CH3 +HOI
4. C6H6 + CH3Ol
The strongest acid among the following aromatic compounds is -
1. | p-Chlorophenol | 2. | p-Nitrophenol |
3. | m-Nitrophenol | 4. | o- Nitrophenol |
Which of the following react with HBr at faster rate?
1. | \(\mathrm{NaBH}_4 \) | 2. | \(\mathrm{LiAlH}_4 \) |
3. | \(PCC \) | 4. | \(\mathrm{KMnO}_4\) |
Which are not cleaved by HIO4?
I : glycerol
II : glycol
III: 1, 3-propanediol
IV: methoxy-2-propanol
1. I, II, III, IV
2. I, II
3. II, III
4. III, IV
The reducing agent among the following is -
1. CrO3/H+
2. KMnO4
3. LiAlH4
4. O3
Glycerol has:
1. 3 primary alcoholic groups
2. 3 secondary alcoholic groups
3. 1 primary alcoholic group and 2 secondary alcoholic groups
4. 2 primary alcoholic groups and 1 secondary alcoholic group
Wood spirit is:
1. CH3OH
2. C2H5OH
3. CH3CH2CH2OH
4. None of the above
Phenol is:
1. a stronger base than NH3
2. an acid stronger than carbonic acid
3. an acid weaker than carbonic acid
4. None of the above
Purity of ether before using it as anaesthetic agent is tested by :-
1. KI + starch
2. CuSO4
3. H2SO4
4. none of these
An organic compound A reacts with PCl5 to give B. The compound B with sodium metal gives n-butane. Thus, A and B are:
1. C2H5OH and C2H5Cl
2. C2H5Cl and C2H5ONa
3. C3H7OH and CH3CH2CH2OCl
4. C4H9OH and C4H9OCl
Which of the following undergoes dehydration most readily?
1. 1-phenyl-1-butanol
2. 1-phenyl-2-butanol
3. 2-phenyl-2-butanol
4. 2-phenyl-1-butanol
The enzyme which can catalyse the conversion of glucose to ethanol is:
1. zymase
2. diastase
3. maltase
4. invertase
Phenol on oxidation gives chloranil. The oxidant used is:
1. K2S2O8
2. KMnO4
3. KCIO3 + HCl
4. none of these
A characteristic group test for phenolic gp. is:
1. Liebermann's nitroso reaction
2. coupling with diazonium salt
3. aqueous FeCl3
4. all of the above
Phenol is weakly acidic but does not react with NaHCO3 like carboxylic acids hence:-
1. phenol is weaker than carbonic acid
2. phenol is stronger than carbonic acid
3. phenol is stronger than carboxylic acid
4. none of the above
The electrophile involved in the above reaction is:
1. dichloromethyl cation ()
2. dichlorocarbene (:CCl2)
3. trichloromethyl anion ()
4. formyl cation ()
Phenyl ethyl ether with concentrated hydrobromic acid on boiling yields:-
1. Phenol and ethyl bromide
2. Bromobenzene and ethanol
3. Phenol and ethane
4. Bromobenzene and ethane
An organic compound A reacts with sodium metal and forms B. On heating with conc. H2SO4, A gives diethyl ether. So A and B are:
1. C3H7OH and CH3ONa
2. CH3OH and CH3ONa
3. C4H9OH and C4H9ONa
4. C2H5OH and C2H5ONa
Identify A and predict the type of reactions
1. and substitution reaction
2. and elimination addition reaction
3. and cine substitution reaction
4. and cine substitution reaction