11242 + Mcqs in Chemistry Page 43 McqOptions

2101.	On prolonged heating of ammonium cyanate or urea, we get [DPMT 1982; CPMT 1979; MP PMT 1996]
A.	\[{{N}_{2}}\]
B.	\[C{{O}_{2}}\]
C.	Biurette
D.	Ammonium carbonate
Answer» D. Ammonium carbonate

Discussion

2102.	Which of the following is the strongest acid [NCERT 1984]
A.	\[C{{H}_{3}}COOH\]
B.	\[BrC{{H}_{2}}COOH\]
C.	\[ClC{{H}_{2}}COOH\]
D.	\[FC{{H}_{2}}COOH\]
Answer» E.

Discussion

2103.	Hydrolysis of an ester gives a carboxylic acid which on Kolbe's electrolysis yields ethane. The ester is [EAMCET 1997; Manipal PMT 2001]
A.	Ethyl methonoate
B.	Methyl ethanoate
C.	Propylamine
D.	Ethylamine
Answer» C. Propylamine

Discussion

2104.	When propanamide reacts with \[B{{r}_{2}}\] and \[NaOH\] then which of the following compound is formed [Manipal 2001]
A.	Ethyl alcohol
B.	Propyl alcohol
C.	Propyl amine
D.	Ethylamine
Answer» E.

Discussion

2105.	If the enolate ion combines with carbonyl group of ester, we get [DPMT 2005]
A.	Aldol
B.	\[\alpha ,\,\beta \]-unsaturated ester
C.	\[\beta \]-keto aldehyde
D.	Acid
Answer» D. Acid

Discussion

2106.	Which of the following compounds will react with \[NaHC{{O}_{3}}\] solution to give sodium salt and carbon dioxide [DPMT 2005]
A.	Acetic acid
B.	\[n\]-hexanol
C.	Phenol
D.	Both A and C
Answer» B. \[n\]-hexanol

Discussion

2107.	A carboxylic acid is converted into its anhydride using [J & K 2005]
A.	Thionyl chloride
B.	Sulphur chloride
C.	Sulphuric acid
D.	Phosphorus pent oxide
Answer» E.

Discussion

2108.	Order of hydrolysis for the following (I) \[RCOCl\] (II) \[RCOOR\] (III) \[RCON{{H}_{2}}\] (IV) \[{{(RCO)}_{2}}O\] [DPMT 2005]
A.	I>IV>II>III
B.	I>II>III>IV
C.	I>III>II>IV
D.	IV>III>II>I
Answer» B. I>II>III>IV

Discussion

2109.	Colouration of \[B{{r}_{2}}/CC{{l}_{4}}\] will be discharged by [Orissa JEE 2005]
A.	Cinnamic acid
B.	Benzoic acid
C.	o-phthalic acid
D.	Acetophenone
Answer» B. Benzoic acid

Discussion

2110.	Which of the following is an amphoteric acid [KCET 2005]
A.	Glycine
B.	Salicylic acid
C.	Benzoic acid
D.	Citric acid
Answer» B. Salicylic acid

Discussion

2111.	Which class of compounds shows H-bonding even more than in alcohols
A.	Phenols
B.	Carboxylic acids
C.	Ethers
D.	Aldehydes
Answer» C. Ethers

Discussion

2112.	X is heated with soda lime and gives ethane. X is [AFMC 2005]
A.	Ethanoic acid
B.	Methanoic acid
C.	Propanoic acid
D.	Either A or C
Answer» D. Either A or C

Discussion

2113.	Among the following acids which has the lowest \[pKa\] value [AIEEE 2005]
A.	\[C{{H}_{3}}COOH\]
B.	\[HCOOH\]
C.	\[{{(C{{H}_{3}})}_{2}}CH-COOH\]
D.	\[C{{H}_{3}}C{{H}_{2}}COOH\]
Answer» C. \[{{(C{{H}_{3}})}_{2}}CH-COOH\]

Discussion

2114.	\[{{C}_{6}}{{H}_{5}}CONHC{{H}_{3}}\] can be converted into \[{{C}_{6}}{{H}_{5}}C{{H}_{2}}NHC{{H}_{3}}\] by [AIIMS 2005]
A.	\[NaB{{H}_{4}}\]
B.	\[{{H}_{2}}-Pd/C\]
C.	\[LiAl{{H}_{4}}\]
D.	\[Zn-Hg/HCl\]
Answer» E.

Discussion

2115.	What happens when 2-hydroxy benzoic acid is distilled with zinc dust, it gives [MP PET/PMT 1998]
A.	Phenol
B.	Benzoic acid
C.	Benzaldehyde
D.	A polymeric compound
Answer» C. Benzaldehyde

Discussion

2116.	\[C{{H}_{3}}C{{O}_{2}}{{C}_{2}}{{H}_{5}}\] on reaction with sodium ethoxide in ethanol gives A, which on heating in the presence of acid gives B compound B is [AIIMS 2005]
A.	\[C{{H}_{3}}COC{{H}_{2}}COOH\]
B.	\[C{{H}_{3}}COC{{H}_{3}}\]
C.
D.	\[C{{H}_{2}}=C\ <\begin{matrix} O{{C}_{2}}{{H}_{5}} \\ O{{C}_{2}}{{H}_{5}} \\ \end{matrix}\]
Answer» D. \[C{{H}_{2}}=C\ <\begin{matrix} O{{C}_{2}}{{H}_{5}} \\ O{{C}_{2}}{{H}_{5}} \\ \end{matrix}\]

Discussion

2117.	In a set reactions acid yielded a product D \[C{{H}_{3}}COOH\xrightarrow{SOC{{l}_{2}}}A\underset{Anhr.\,AlC{{l}_{3}}}{\mathop{\xrightarrow{Benzene}}}\,B\xrightarrow{HCN}C\xrightarrow{HOH}D.\] [CBSE PMT 2005]
A.
B.
C.
D.
Answer» B.

Discussion

2118.	4-methyl benzene sulphonic acid reacts with sodium acetate to give [IIT-JEE (Screening) 2005]
A.
B.
C.
D.
Answer» B.

Discussion

2119.	Lactic acid molecule has [MH CET 2004]
A.	One chiral carbon atom
B.	Two chiral carbon atoms
C.	No chiral carbon atom
D.	As asymetric molecule
Answer» B. Two chiral carbon atoms

Discussion

2120.	Fruity smell is given by [MH CET 2004]
A.	Esters
B.	Alcohols
C.	Chloroform
D.	Acid anhydrides
Answer» B. Alcohols

Discussion

2121.	When \[C{{H}_{3}}COOH\] reacts with \[C{{H}_{3}}-Mg-X\] [BVP 2003]
A.	\[C{{H}_{3}}COX\]is formed
B.	Hydrocarbon is formed
C.	Acetone is formed
D.	Alcohol is formed
Answer» C. Acetone is formed

Discussion

2122.	\[C{{H}_{3}}CHO\xrightarrow{HCN}A\xrightarrow{HOH}B.\] The product B is [Pb. CET 2003]
A.	Malonic acid
B.	Glycolic acid
C.	Lactic acid
D.	Malic acid
Answer» D. Malic acid

Discussion

2123.	Urea upon hydrolysis yields [Pb. CET 2001]
A.	Acetamide
B.	Carbonic acid
C.	Ammonium hydroxide
D.	\[N{{O}_{2}}\]
Answer» C. Ammonium hydroxide

Discussion

2124.	Acetic acid reacts with \[PC{{l}_{5}}\]to form [Pb. CET 2001]
A.	\[C{{H}_{3}}COCl\]
B.	\[CHC{{l}_{2}}COOH\]
C.	\[C{{H}_{2}}ClCOOH\]
D.	\[C{{H}_{3}}COOCl\]
Answer» B. \[CHC{{l}_{2}}COOH\]

Discussion

2125.	Benedict's solution is not reduced by [CPMT 2004]
A.	Formaldehyde
B.	Acetaldehyde
C.	Glucose
D.	Acetic anhydride
Answer» E.

Discussion

2126.	\[C{{H}_{3}}COOH\] is reacted with \[CH\equiv CH\] in presence of \[H{{g}^{++}},\] the product is [DPMT 2004; BHU 1998]
A.	\[\underset{\underset{C{{H}_{2}}(OOC{{H}_{3}})\,\,\,\,}{\mathop{\|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}}\,}{\mathop{C{{H}_{3}}(OOCC{{H}_{3}})}}\,\]
B.	\[\underset{\begin{smallmatrix} \,\,\| \\ C{{H}_{2}}-(OOC-C{{H}_{3}})\,\, \end{smallmatrix}}{\mathop{C{{H}_{3}}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}}\,\]
C.	\[\underset{\begin{smallmatrix} \,\,\| \\ CH{{(OOC-C{{H}_{3}})}_{2}} \end{smallmatrix}}{\mathop{C{{H}_{3}}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}}\,\]
D.	None of these
Answer» D. None of these

Discussion

2127.	Which of the following is most acidic [MP PET 2004]
A.	Picric acid
B.	p-nitrophenol
C.	m-nitrophenol
D.	o-p dinitrophenol
Answer» B. p-nitrophenol

Discussion

2128.	An organic compound is boiled with alcoholic potash. The product is cooled and acidified with \[HCl.\] A white solid separates out. The starting compound may be [KCET 2004]
A.	Ethyl benzoate
B.	Ethyl formate
C.	Ethyl acetate
D.	Methyl acetate
Answer» B. Ethyl formate

Discussion

2129.	The reagent which does not give acid chloride on treating with a carboxylic acid is [KCET 2004]
A.	\[PC{{l}_{5}}\]
B.	\[C{{l}_{2}}\]
C.	\[SOC{{l}_{2}}\]
D.	\[PC{{l}_{3}}\]
Answer» C. \[SOC{{l}_{2}}\]

Discussion

2130.	When anisole is heated with HI, the product is [CET Pune 1998]
A.	Phenyl iodide and methyl iodide
B.	Phenol and methanol
C.	Phenyl iodide and methanol
D.	Methyl iodide and phenol
Answer» E.

Discussion

2131.	The reaction of an ester \[RCOO{R}'\] with an alcohol \[{R}''OH\] in the presence of an acid gives [Kerala PMT 2004]
A.	\[RCOOH\]
B.	\[{R}'COOH\]
C.	\[{R}''COOR\]
D.	\[RCOO{R}''\]
E.	\[{R}'COO{R}''\]
Answer» E. \[{R}'COO{R}''\]

Discussion

2132.	o-Toluic acid on reaction with \[B{{r}_{2}}+Fe,\]gives [AIIMS 2004]
A.
B.
C.
D.
Answer» D.

Discussion

2133.	On mixing ethyl acetate with aqueous sodium chloride, the composition of the resultant solution is [AIEEE 2004]
A.	\[C{{H}_{3}}COCl+{{C}_{2}}{{H}_{5}}OH+NaOH\]
B.	\[C{{H}_{3}}COONa+{{C}_{2}}{{H}_{5}}OH\]
C.	\[C{{H}_{3}}COO{{C}_{2}}{{H}_{5}}+NaCl\]
D.	\[C{{H}_{3}}Cl+{{C}_{2}}{{H}_{5}}COONa\]
Answer» D. \[C{{H}_{3}}Cl+{{C}_{2}}{{H}_{5}}COONa\]

Discussion

2134.	Consider the acidity of the carboxylic acids \[PhCOOH\] \[o-N{{O}_{2}}{{C}_{6}}{{H}_{4}}COOH\] \[p-N{{O}_{2}}{{C}_{6}}{{H}_{4}}COOH\] \[m-N{{O}_{2}}{{C}_{6}}{{H}_{4}}COOH\] Which of the following order is correct? [AIEEE 2004]
A.	\[b>d>a>c\]
B.	\[b>d>c>a\]
C.	\[a>b>c>d\]
D.	\[b>c>d>a\]
Answer» E.

Discussion

2135.	Which of the following is the correct order of increasing strengths of carboxylic acids
A.	\[C{{H}_{2}}FCOOH<C{{H}_{3}}COOH\]\[<C{{H}_{2}}ClCOOH<CC{{l}_{3}}COOH\]
B.	\[C{{H}_{3}}COOH<C{{H}_{2}}ClCOOH\]\[<C{{H}_{2}}FCOOH<CC{{l}_{3}}COOH\]
C.	\[C{{H}_{2}}ClCOOH<C{{H}_{2}}FCOOH\]\[<CC{{l}_{3}}COOH<C{{H}_{3}}COOH\]
D.	\[CC{{l}_{3}}COOH<C{{H}_{2}}ClCOOH\]\[<C{{H}_{2}}FCOOH<C{{H}_{3}}COOH\]
Answer» C. \[C{{H}_{2}}ClCOOH<C{{H}_{2}}FCOOH\]\[<CC{{l}_{3}}COOH<C{{H}_{3}}COOH\]

Discussion

2136.	Treatment of benzoic acid with \[C{{l}_{2}}/FeC{{l}_{3}}\] will give [KCET 1998; CET Pune 1998]
A.	p-chlorobenzoic acid
B.	o-chlorobenzoic acid
C.	2, 4-dichlorobenzoic acid
D.	m-chlorobenzoic aicd
Answer» E.

Discussion

2137.	Acetic anhydride reacts with diethyl ether in presence of anhydrous \[AlC{{l}_{3}}\] to form [MP PMT 1992]
A.	Ethyl acetate
B.	Methyl propionate
C.	Methyl acetate
D.	Propionic acid
Answer» B. Methyl propionate

Discussion

2138.	What will happen if \[LiAl{{H}_{4}}\] is added to an ester [CBSE PMT 2000]
A.	Two units of alcohol are obtained
B.	One unit of alcohol and one unit of acid is obtained
C.	Two units of acids are obtained
D.	None of these
Answer» B. One unit of alcohol and one unit of acid is obtained

Discussion

2139.	Silver benzoate reacts with bromine to form [KCET 1996]
A.
B.
C.
D.
Answer» E.

Discussion

2140.	Lactic acid on heating with conc. \[{{H}_{2}}S{{O}_{4}}\] gives [MP PET 1996]
A.	Acetic acid
B.	Propionic acid
C.	Acrylic acid
D.	Formic acid
Answer» D. Formic acid

Discussion

2141.	Acetamide is [MP PET 1990; RPMT 1999]
A.	Acidic
B.	Basic
C.	Neutral
D.	Amphoteric
Answer» E.

Discussion

2142.	Oxalic acid on being heated upto \[{{90}^{o}}C\] with conc. \[{{H}_{2}}S{{O}_{4}}\] forms [AFMC 1989; MP PET 1994; MP PMT 1989]
A.	\[HCOOH+C{{O}_{2}}\]
B.	\[C{{O}_{2}}+{{H}_{2}}O\]
C.	\[C{{O}_{2}}+CO+{{H}_{2}}O\]
D.	\[HCOOH+CO\]
Answer» D. \[HCOOH+CO\]

Discussion

2143.	When benzoic acid is treated with \[PC{{l}_{5}}\]at 100°C, it gives [Orissa JEE 2003]
A.	Benzoyl chloride
B.	o-chlorobenzoic acid
C.	p-chlorobenzoic acid
D.	Benzyl chloride
Answer» B. o-chlorobenzoic acid

Discussion

2144.	The reagent used for converting ethanoic acid to ethanol is [KCET 1996; EAMCET 1998]
A.	\[LiAl{{H}_{4}}\]
B.	\[KMn{{O}_{4}}\]
C.	\[PC{{l}_{3}}\]
D.	\[{{K}_{2}}C{{r}_{2}}{{O}_{7}}/{{H}^{+}}\]
Answer» B. \[KMn{{O}_{4}}\]

Discussion

2145.	Nitration of benzoic acid gives [MP PMT 1997]
A.	3-nitrobenzoic acid
B.	2-nitrobenzoic acid
C.	2, 3-dinitrobenzoic acid
D.	2, 4-dinitrobenzoic acid
Answer» B. 2-nitrobenzoic acid

Discussion

2146.	The above shown polymer is obtained when a carbon compound is allowed to stand. It is a white solid. The polymer is [CBSE PMT 1989]
A.	Trioxane
B.	Formose
C.	Paraformaldehyde
D.	Metaldehyde
Answer» B. Formose

Discussion

2147.	An aqueous solution of urea [CPMT 1983]
A.	Is neutral
B.	Is acidic
C.	Is basic
D.	Can act as an acid and a base
Answer» B. Is acidic

Discussion

2148.	Which of the following acids has the smallest dissociation constant [IIT-JEE (Screening) 2002]
A.	\[C{{H}_{3}}CHFCOOH\]
B.	\[FC{{H}_{2}}C{{H}_{2}}COOH\]
C.	\[BrC{{H}_{2}}C{{H}_{2}}COOH\]
D.	\[C{{H}_{3}}CHBrCOOH\]
Answer» D. \[C{{H}_{3}}CHBrCOOH\]

Discussion

2149.	When glycerol is heated with \[KHS{{O}_{4}}\] it gives [CPMT 1974, 85; MP PMT 1988, 90, 91, 92, 94; MP PET 1988, 92]
A.	\[C{{H}_{2}}=CH-C{{H}_{3}}\]
B.	\[C{{H}_{2}}=CH-C{{H}_{2}}OH\]
C.	\[C{{H}_{2}}=CH-CHO\]
D.	\[C{{H}_{2}}=C=C{{H}_{2}}\]
Answer» D. \[C{{H}_{2}}=C=C{{H}_{2}}\]

Discussion

2150.	Because of resonance the oxygen atom of \[-OH\] group of phenol
A.	Acquires positive charge
B.	Acquires negative charge
C.	Remains uneffected
D.	Liberates
Answer» B. Acquires negative charge

Discussion

Explore topic-wise MCQs in Joint Entrance Exam - Main (JEE Main).

On prolonged heating of ammonium cyanate or urea, we get [DPMT 1982; CPMT 1979; MP PMT 1996]

Which of the following is the strongest acid [NCERT 1984]

Hydrolysis of an ester gives a carboxylic acid which on Kolbe's electrolysis yields ethane. The ester is [EAMCET 1997; Manipal PMT 2001]

When propanamide reacts with \[B{{r}_{2}}\] and \[NaOH\] then which of the following compound is formed [Manipal 2001]

If the enolate ion combines with carbonyl group of ester, we get [DPMT 2005]

Which of the following compounds will react with \[NaHC{{O}_{3}}\] solution to give sodium salt and carbon dioxide [DPMT 2005]

A carboxylic acid is converted into its anhydride using [J & K 2005]

Order of hydrolysis for the following (I) \[RCOCl\] (II) \[RCOOR\] (III) \[RCON{{H}_{2}}\] (IV) \[{{(RCO)}_{2}}O\] [DPMT 2005]

Colouration of \[B{{r}_{2}}/CC{{l}_{4}}\] will be discharged by [Orissa JEE 2005]

Which of the following is an amphoteric acid [KCET 2005]

Which class of compounds shows H-bonding even more than in alcohols

X is heated with soda lime and gives ethane. X is [AFMC 2005]

Among the following acids which has the lowest \[pKa\] value [AIEEE 2005]

\[{{C}_{6}}{{H}_{5}}CONHC{{H}_{3}}\] can be converted into \[{{C}_{6}}{{H}_{5}}C{{H}_{2}}NHC{{H}_{3}}\] by [AIIMS 2005]

What happens when 2-hydroxy benzoic acid is distilled with zinc dust, it gives [MP PET/PMT 1998]

\[C{{H}_{3}}C{{O}_{2}}{{C}_{2}}{{H}_{5}}\] on reaction with sodium ethoxide in ethanol gives A, which on heating in the presence of acid gives B compound B is [AIIMS 2005]

In a set reactions acid yielded a product D \[C{{H}_{3}}COOH\xrightarrow{SOC{{l}_{2}}}A\underset{Anhr.\,AlC{{l}_{3}}}{\mathop{\xrightarrow{Benzene}}}\,B\xrightarrow{HCN}C\xrightarrow{HOH}D.\] [CBSE PMT 2005]

4-methyl benzene sulphonic acid reacts with sodium acetate to give [IIT-JEE (Screening) 2005]

Lactic acid molecule has [MH CET 2004]

Fruity smell is given by [MH CET 2004]

When \[C{{H}_{3}}COOH\] reacts with \[C{{H}_{3}}-Mg-X\] [BVP 2003]

\[C{{H}_{3}}CHO\xrightarrow{HCN}A\xrightarrow{HOH}B.\] The product B is [Pb. CET 2003]

Urea upon hydrolysis yields [Pb. CET 2001]

Acetic acid reacts with \[PC{{l}_{5}}\]to form [Pb. CET 2001]

Benedict's solution is not reduced by [CPMT 2004]

\[C{{H}_{3}}COOH\] is reacted with \[CH\equiv CH\] in presence of \[H{{g}^{++}},\] the product is [DPMT 2004; BHU 1998]

Which of the following is most acidic [MP PET 2004]

An organic compound is boiled with alcoholic potash. The product is cooled and acidified with \[HCl.\] A white solid separates out. The starting compound may be [KCET 2004]

The reagent which does not give acid chloride on treating with a carboxylic acid is [KCET 2004]

When anisole is heated with HI, the product is [CET Pune 1998]

The reaction of an ester \[RCOO{R}'\] with an alcohol \[{R}''OH\] in the presence of an acid gives [Kerala PMT 2004]

o-Toluic acid on reaction with \[B{{r}_{2}}+Fe,\]gives [AIIMS 2004]

On mixing ethyl acetate with aqueous sodium chloride, the composition of the resultant solution is [AIEEE 2004]

Consider the acidity of the carboxylic acids \[PhCOOH\] \[o-N{{O}_{2}}{{C}_{6}}{{H}_{4}}COOH\] \[p-N{{O}_{2}}{{C}_{6}}{{H}_{4}}COOH\] \[m-N{{O}_{2}}{{C}_{6}}{{H}_{4}}COOH\] Which of the following order is correct? [AIEEE 2004]

Which of the following is the correct order of increasing strengths of carboxylic acids

Treatment of benzoic acid with \[C{{l}_{2}}/FeC{{l}_{3}}\] will give [KCET 1998; CET Pune 1998]

Acetic anhydride reacts with diethyl ether in presence of anhydrous \[AlC{{l}_{3}}\] to form [MP PMT 1992]

What will happen if \[LiAl{{H}_{4}}\] is added to an ester [CBSE PMT 2000]

Silver benzoate reacts with bromine to form [KCET 1996]

Lactic acid on heating with conc. \[{{H}_{2}}S{{O}_{4}}\] gives [MP PET 1996]

Acetamide is [MP PET 1990; RPMT 1999]

Oxalic acid on being heated upto \[{{90}^{o}}C\] with conc. \[{{H}_{2}}S{{O}_{4}}\] forms [AFMC 1989; MP PET 1994; MP PMT 1989]

When benzoic acid is treated with \[PC{{l}_{5}}\]at 100°C, it gives [Orissa JEE 2003]

The reagent used for converting ethanoic acid to ethanol is [KCET 1996; EAMCET 1998]

Nitration of benzoic acid gives [MP PMT 1997]

The above shown polymer is obtained when a carbon compound is allowed to stand. It is a white solid. The polymer is [CBSE PMT 1989]

An aqueous solution of urea [CPMT 1983]

Which of the following acids has the smallest dissociation constant [IIT-JEE (Screening) 2002]

When glycerol is heated with \[KHS{{O}_{4}}\] it gives [CPMT 1974, 85; MP PMT 1988, 90, 91, 92, 94; MP PET 1988, 92]

Because of resonance the oxygen atom of \[-OH\] group of phenol