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This section includes 11242 Mcqs, each offering curated multiple-choice questions to sharpen your Joint Entrance Exam - Main (JEE Main) knowledge and support exam preparation. Choose a topic below to get started.
2051. |
Which of the following is most acidic [MP PMT 1995] |
A. | Formic acid |
B. | Chloroacetic acid |
C. | Propionic acid |
D. | Acetic acid |
Answer» C. Propionic acid | |
2052. |
\[C{{H}_{3}}COOC{{H}_{3}}+\] excess \[PhMgBr\]\[\to \text{product}\xrightarrow{{{H}^{+}}}X\] The product \[X\] is [Orissa JEE 2005] |
A. | 1, 1-diphenylethanol |
B. | 1, 1-diphenylmethanol |
C. | Methyl phenylethanol |
D. | Methyl phenylketone |
Answer» B. 1, 1-diphenylmethanol | |
2053. |
Urea is a better fertilizer than ammonium sulphate because |
A. | It has greater percentage of nitrogen |
B. | It is more soluble |
C. | It is weakly basic |
D. | It does not produce acidity in soil |
Answer» B. It is more soluble | |
2054. |
The order of decreasing rate of reaction with ammonia is [Pb. PMT 1998] |
A. | Anhydrides, esters, ethers |
B. | Anhydrides, ethers, esters |
C. | Ethers, anhydrides, esters |
D. | Esters, ethers, anhydrides |
Answer» C. Ethers, anhydrides, esters | |
2055. |
Which one of the following orders of acid strength is correct [CBSE PMT 2003] |
A. | \[RCOOH>HC\equiv CH>HOH>ROH\] |
B. | \[RCOOH\ >ROH\ >HOH\ >HC\equiv CH\] |
C. | \[RCOOH\ >HOH\ >ROH\ >HC\equiv CH\] |
D. | \[RCOOH\ >HOH\ >HC\equiv CH\ >ROH\] |
Answer» D. \[RCOOH\ >HOH\ >HC\equiv CH\ >ROH\] | |
2056. |
HCOOH shows all tests of aldehyde because [CPMT 1996] |
A. | It has one aldehyde group |
B. | It is member of aldehyde |
C. | All acids show tests of aldehyde |
D. | Does not show any test |
Answer» B. It is member of aldehyde | |
2057. |
\[C{{H}_{2}}=CH-{{(C{{H}_{2}})}_{5}}COOH\underset{HBr}{\mathop{\xrightarrow{\text{Peroxide}}}}\,Z\] where Z is [CPMT 1996] |
A. | \[\underset{\underset{Br\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}}\,}{\mathop{C{{H}_{3}}-CH-{{(C{{H}_{2}})}_{5}}COOH}}\,\] |
B. | \[BrC{{H}_{2}}-{{(C{{H}_{2}})}_{6}}COOH\] |
C. | \[C{{H}_{2}}=CH-{{(C{{H}_{2}})}_{5}}-C{{H}_{2}}OH\] |
D. | \[{{C}_{6}}{{H}_{5}}COOH\] |
Answer» C. \[C{{H}_{2}}=CH-{{(C{{H}_{2}})}_{5}}-C{{H}_{2}}OH\] | |
2058. |
Reduction of carboxylic acids gives |
A. | Alcohol with hydrogen in presence of palladium |
B. | Alcohol with \[LiAl{{H}_{4}}\] |
C. | Aldehyde with \[LiAl{{H}_{4}}\] |
D. | Alcohol with \[2HI(P)\] |
Answer» C. Aldehyde with \[LiAl{{H}_{4}}\] | |
2059. |
Name the end product in the following series of reactions \[C{{H}_{3}}COOH\xrightarrow{N{{H}_{3}}}A\underset{{{P}_{2}}{{O}_{5}}}{\mathop{\xrightarrow{\Delta }}}\,B\] [DPMT 1984] |
A. | \[C{{H}_{4}}\] |
B. | \[C{{H}_{3}}OH\] |
C. | Acetonitrile |
D. | Ammonium acetate |
Answer» D. Ammonium acetate | |
2060. |
Ethyl acetate at room temperature is a |
A. | Solid |
B. | Liquid |
C. | Gas |
D. | Solution |
Answer» C. Gas | |
2061. |
Alkaline hydrolysis of esters is known as [CPMT 1986, 88, 93; MNR 1986; MP PET 1993] |
A. | Saponification |
B. | Hydration |
C. | Esterification |
D. | Alkalisation |
Answer» B. Hydration | |
2062. |
Which of the following would be expected to be most highly ionised in water [AIIMS 1982] |
A. | \[C{{H}_{2}}ClC{{H}_{2}}C{{H}_{2}}COOH\] |
B. | \[C{{H}_{3}}CHCl.C{{H}_{2}}.COOH\] |
C. | \[C{{H}_{3}}.C{{H}_{2}}.CC{{l}_{2}}.COOH\] |
D. | \[C{{H}_{3}}.C{{H}_{2}}.CHCl.COOH\] |
Answer» D. \[C{{H}_{3}}.C{{H}_{2}}.CHCl.COOH\] | |
2063. |
When urea is heated, it forms biurette, alkaline solution of which forms ..... with \[CuS{{O}_{4}}\] solution [AFMC 1980] |
A. | Violet colour |
B. | Red colour |
C. | Green colour |
D. | Black colour |
Answer» B. Red colour | |
2064. |
Which of the following compounds will evolve hydrogen on treatment with metal [CPMT 1974] |
A. | \[{{C}_{2}}{{H}_{5}}OH\] |
B. | \[C{{H}_{3}}COOH\] |
C. | A and B both |
D. | None of these |
Answer» D. None of these | |
2065. |
What is the main reason for the fact that carboxylic acids can undergo ionization [MNR 1993; Pb. PMT 2004] |
A. | Absence of \[\alpha -\]hydrogen |
B. | Resonance stabilisation of the carboxylate ion |
C. | High reactivity of \[\alpha -\]hydrogen |
D. | Hydrogen bonding |
Answer» C. High reactivity of \[\alpha -\]hydrogen | |
2066. |
Benzoic acid has higher molecular weight in benzene and less in water because |
A. | Water has lower freezing point and higher boiling point than benzene |
B. | It dissociates to a greater extent in benzene than in water |
C. | It associates in water and dissociates in benzene |
D. | It dissociates in water and associates in benzene |
Answer» E. | |
2067. |
When acetic acid is dissolved in benzene its molecular mass [AFMC 1991] |
A. | Decreases |
B. | Increases |
C. | Either increases or decreases |
D. | Suffers no change |
Answer» C. Either increases or decreases | |
2068. |
Which of the following can possibly be used as analgesic without causing addiction and moon modification [CBSE PMT 1997] |
A. | Morphine |
B. | N-acetyl-para-aminophenol |
C. | Drazepom |
D. | Tetrahydrocatinol |
Answer» C. Drazepom | |
2069. |
Which of the following esters cannot undergo Claisen self condensation [CBSE PMT 1998] |
A. | \[C{{H}_{3}}-C{{H}_{2}}-C{{H}_{2}}-C{{H}_{2}}-COO{{C}_{2}}{{H}_{5}}\] |
B. | \[{{C}_{6}}{{H}_{5}}COO{{C}_{2}}{{H}_{5}}\] |
C. | \[{{C}_{6}}{{H}_{5}}C{{H}_{2}}COO{{C}_{2}}{{H}_{5}}\] |
D. | \[{{C}_{6}}{{H}_{11}}C{{H}_{2}}COO{{C}_{2}}{{H}_{5}}\] |
Answer» C. \[{{C}_{6}}{{H}_{5}}C{{H}_{2}}COO{{C}_{2}}{{H}_{5}}\] | |
2070. |
In the precipitation of soap, which can be used instead of NaCl [CPMT 1979] |
A. | Na |
B. | \[C{{H}_{3}}COONa\] |
C. | \[N{{a}_{2}}S{{O}_{4}}\] |
D. | Sodium silicate |
Answer» D. Sodium silicate | |
2071. |
\[C{{H}_{3}}C{{H}_{2}}COOH\xrightarrow{C{{l}_{2}}/Fe}X\underset{K{{O}_{4}}}{\mathop{\xrightarrow{Alcoholic}}}\,Y\] Compound Y is [DPMT 1981; JIPMER 2000; AIEEE 2002] |
A. | \[C{{H}_{3}}C{{H}_{2}}OH\] |
B. | \[C{{H}_{3}}C{{H}_{2}}CN\] |
C. | \[C{{H}_{2}}=CHCOOH\] |
D. | \[C{{H}_{3}}CHClCOOH\] |
Answer» D. \[C{{H}_{3}}CHClCOOH\] | |
2072. |
Which acid is strongest or Which is most acidic [CPMT 1982, 89; BIT 1992; MP PET 1996; MP PMT/PET 1988; MP PMT 1995, 97;RPMT 1997] |
A. | \[C{{l}_{2}}CH.COOH\] |
B. | \[ClC{{H}_{2}}COOH\] |
C. | \[C{{H}_{3}}COOH\] |
D. | \[C{{l}_{3}}C.COOH\] |
Answer» E. | |
2073. |
The end product B in the sequence of reactions \[R-X\xrightarrow{C{{N}^{-}}}A\xrightarrow{NaOH}B\] is [CPMT 1985] |
A. | An alkane |
B. | A carboxylic acid |
C. | Sodium salt of carboxylic acid |
D. | A ketone |
Answer» D. A ketone | |
2074. |
A colourless water soluble organic liquid decomposes sodium carbonate and liberates carbon dioxide. It produces black precipitate with Tollen's reagent. The liquid is [KCET 1989] |
A. | Acetaldehyde |
B. | Acetic acid |
C. | Formaldehyde |
D. | Formic acid |
Answer» E. | |
2075. |
Given below are some statements concerning formic acid, which of them is true [CPMT 1983] |
A. | It is a weaker acid than acetic acid |
B. | It is a reducing agent |
C. | When its calcium salt is heated, it forms a ketone |
D. | It is an oxidising agent |
Answer» C. When its calcium salt is heated, it forms a ketone | |
2076. |
Which decolourises the colour of acidic \[KMn{{O}_{4}}\] [CPMT 1991] |
A. | \[C{{H}_{3}}COOH\] |
B. | \[C{{H}_{3}}C{{H}_{2}}COOH\] |
C. | \[COOH.\,COOH\] |
D. | \[C{{H}_{3}}COO{{C}_{2}}{{H}_{5}}\] |
Answer» D. \[C{{H}_{3}}COO{{C}_{2}}{{H}_{5}}\] | |
2077. |
Formic acid [MP PET/PMT 1988] |
A. | Is immiscible with water |
B. | Reduces the ammonical silver nitrate |
C. | Is a weak acid nearly three and a half time weaker than acetic acid |
D. | Is prepared by heating potassium hydroxide |
Answer» C. Is a weak acid nearly three and a half time weaker than acetic acid | |
2078. |
\[C{{H}_{3}}COOH\underset{{{P}_{2}}{{O}_{5}}}{\mathop{\xrightarrow{\Delta }}}\,X\]. Identify X [JIPMER 2000; CPMT 2003] |
A. | \[C{{H}_{3}}COC{{H}_{3}}\] |
B. | \[C{{H}_{3}}CHO\] |
C. | \[{{(C{{H}_{3}}CO)}_{2}}O\] |
D. | \[C{{H}_{4}}\] |
Answer» D. \[C{{H}_{4}}\] | |
2079. |
The acid showing salt-like character in aqueous solution is [MP PET/PMT 1998] |
A. | Acetic acid |
B. | Benzoic acid |
C. | Formic acid |
D. | \[\alpha -\]amino acetic acid |
Answer» E. | |
2080. |
In the presence of iodine catalyst, chlorine reacts with acetic acid to form [MP PMT 1997] |
A. | \[\overset{\overset{\,\,\,\,O}{\mathop{\,\,\,\,\,||}}\,}{\mathop{C{{H}_{3}}-C-Cl}}\,\] |
B. | \[\overset{\overset{\,\,\,\,\,\,O}{\mathop{\,\,\,\,\,\,\,\,\,||}}\,}{\mathop{C{{H}_{2}}Cl-C-OH}}\,\] |
C. | \[\overset{\overset{\,\,\,Cl}{\mathop{\,\,|}}\,}{\mathop{\underset{\underset{\,\,Cl}{\mathop{\,\,\,|}}\,}{\mathop{C{{H}_{3}}-C-OH}}\,}}\,\] |
D. | \[\overset{\overset{O\,\,}{\mathop{||\,\,\,\,}}\,}{\mathop{C{{H}_{3}}-C-O-Cl}}\,\] |
Answer» C. \[\overset{\overset{\,\,\,Cl}{\mathop{\,\,|}}\,}{\mathop{\underset{\underset{\,\,Cl}{\mathop{\,\,\,|}}\,}{\mathop{C{{H}_{3}}-C-OH}}\,}}\,\] | |
2081. |
The reaction \[2C{{H}_{3}}-\underset{\underset{O}{\mathop{||}}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{C-O{{C}_{2}}{{H}_{5}}\xrightarrow{{{C}_{2}}{{H}_{5}}ONa}}}\,\]\[C{{H}_{3}}-\underset{\underset{O}{\mathop{||}}\,}{\mathop{C}}\,-C{{H}_{2}}-\underset{\underset{O}{\mathop{||}}\,}{\mathop{C}}\,-O{{C}_{2}}{{H}_{5}}+{{C}_{2}}{{H}_{5}}OH\] is called [MP PMT 2003; KCET 1996] |
A. | Etard reaction |
B. | Perkin's reaction |
C. | Claisen condensation |
D. | Claisen Schmidt reaction |
Answer» D. Claisen Schmidt reaction | |
2082. |
Which is the strongest acid? (pKa value is given in the bracket) [MP PMT 1997; BHU 2003] |
A. | \[HCOOH\,(3.77)\] |
B. | \[{{C}_{6}}{{H}_{5}}COOH\,(4.22)\] |
C. | \[C{{H}_{3}}COOH\,(4.71)\] |
D. | \[C{{H}_{3}}C{{H}_{2}}COOH\,(4.88)\] |
Answer» B. \[{{C}_{6}}{{H}_{5}}COOH\,(4.22)\] | |
2083. |
The vapour of a carboxylic acid HA when passed over \[Mn{{O}_{2}}\] at 573 K yields propanone. The acid HA is |
A. | Methanoic acid |
B. | Ethanoic acid |
C. | Propanoic acid |
D. | Butanoic acid |
Answer» C. Propanoic acid | |
2084. |
Acetic acid dissolved in benzene shows a molecular mass of [MP PET 1993] |
A. | 30 |
B. | 60 |
C. | 120 |
D. | 240 |
Answer» D. 240 | |
2085. |
Which of the following compounds will react with \[NaHC{{O}_{3}}\] solution to give sodium salt and carbon dioxide [CBSE PMT 1999; BHU 1983, 2002] |
A. | Phenol |
B. | n-hexanol |
C. | Acetic acid |
D. | Both A and B |
Answer» D. Both A and B | |
2086. |
Acetic acid exists as a dimer in benzene solution. This is due to [MP PMT 1989; CPMT 1982] |
A. | Condensation |
B. | Presence of \[-COOH\] group |
C. | Presence of \[\alpha -\]hydrogen |
D. | Hydrogen bonding |
Answer» E. | |
2087. |
Ester and acetamide are distinguished by [BHU 1996] |
A. | Hydrolysis with strong acids or alkali |
B. | Derivatives of fatty acids |
C. | Both A and B |
D. | None of these |
Answer» D. None of these | |
2088. |
Formaldehyde and formic acid can be distinguished using [AFMC 1993] |
A. | Tollen's reagent |
B. | Fehling solution |
C. | Ferric chloride |
D. | Sodium bicarbonate |
Answer» E. | |
2089. |
Reaction of ethyl formate with excess of \[C{{H}_{3}}MgI\] followed by hydrolysis gives [IIT (Screening) 1992] |
A. | n-propyl alcohol |
B. | Ethanal |
C. | Propanal |
D. | Isopropyl alcohol |
Answer» E. | |
2090. |
In the reaction \[C{{H}_{3}}COOH\xrightarrow{LiAl{{H}_{4}}}(A)\xrightarrow{{{I}_{2}}+NaOH}(B)\xrightarrow{Ag\text{(Dust)}}(C)\] the final product C is |
A. | \[{{C}_{2}}{{H}_{5}}I\] |
B. | \[{{C}_{2}}{{H}_{5}}OH\] |
C. | \[{{C}_{2}}{{H}_{2}}\] |
D. | \[C{{H}_{3}}COC{{H}_{3}}\] |
Answer» D. \[C{{H}_{3}}COC{{H}_{3}}\] | |
2091. |
Hydrolytic reaction of fats with caustic soda is known as [MP PMT/PET 1988; AMU 1988; KCET 2000; MP PET 2001] |
A. | Esterification |
B. | Saponification |
C. | Acetylation |
D. | Carboxylation |
Answer» C. Acetylation | |
2092. |
In the following sequence of reactions, what is D [UPSEAT 2002] |
A. | Primary amine |
B. | An amide |
C. | Phenyl isocyanate |
D. | A chain lengthened hydrocarbon |
Answer» D. A chain lengthened hydrocarbon | |
2093. |
In \[C{{H}_{3}}COOH\] and HCOOH, HCOOH will be [CPMT 1975; DPMT 1982] |
A. | Less acidic |
B. | Equally acidic |
C. | More acidic |
D. | None |
Answer» D. None | |
2094. |
Which does not give silver mirror with ammoniacal \[AgN{{O}_{3}}\] [MP PET 1992] |
A. | HCHO |
B. | \[C{{H}_{3}}CHO\] |
C. | \[C{{H}_{3}}COOH\] |
D. | HCOOH |
Answer» D. HCOOH | |
2095. |
Acetic acid is weak acid than sulphuric acid because [CPMT 2003] |
A. | It decompose on increasing temperature |
B. | It has less degree of ionisation |
C. | It has -COOH group |
D. | None of these |
Answer» C. It has -COOH group | |
2096. |
Which one is strongest acid [MP PMT 1992] |
A. | \[C{{H}_{2}}FCOOH\] |
B. | \[C{{H}_{2}}ClCOOH\] |
C. | \[CHC{{l}_{2}}COOH\] |
D. | \[CH{{F}_{2}}COOH\] |
Answer» E. | |
2097. |
Sulphonation of benzoic acid produces mainly [CPMT 1982] |
A. | o-sulphobenzoic acid |
B. | m-sulphobenzoic acid |
C. | p-sulphobenzoic acid |
D. | o- and p-sulphobenzoic acid |
Answer» C. p-sulphobenzoic acid | |
2098. |
The reaction of HCOOH with conc. \[{{H}_{2}}S{{O}_{4}}\] gives [DPMT 1982, CPMT 1989; MP PET 1995; AIIMS 2000; Manipal 2001; Pb. CET 2002 ] |
A. | \[C{{O}_{2}}\] |
B. | CO |
C. | Oxalic acid |
D. | Acetic acid |
Answer» C. Oxalic acid | |
2099. |
Which of the following reduces Tollen's reagent [MP PMT 1991] |
A. | Acetic acid |
B. | Citric acid |
C. | Oxalic acid |
D. | Formic acid |
Answer» E. | |
2100. |
What is obtained, when propene is treated with N-bromo succinimide [MP PMT 2003] |
A. | \[C{{H}_{3}}-\underset{\,\,}{\mathop{\underset{\underset{\,Br}{\mathop{|}}\,}{\mathop{C}}\,=C{{H}_{2}}\ \ }}\,\] |
B. | \[BrC{{H}_{2}}-CH=C{{H}_{2}}\] |
C. | \[BrC{{H}_{2}}-CH=CHBr\] |
D. | \[BrC{{H}_{2}}-\underset{\underset{Br}{\mathop{|\,\,\,\,}}\,}{\mathop{CH}}\,-C{{H}_{2}}Br\] |
Answer» C. \[BrC{{H}_{2}}-CH=CHBr\] | |