MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
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.
| 1901. |
Benzaldehyde condenses with N, N-dimethylaniline in presence of anhydrous \[ZnC{{l}_{2}}\] to give [Kerala (Med.) 2003] |
| A. | Michler?s ketone |
| B. | Azo dye |
| C. | Malachite green |
| D. | Buffer yellow |
| Answer» D. Buffer yellow | |
| 1902. |
Identify the product Z in the following reaction \[{{C}_{6}}{{H}_{5}}N{{H}_{2}}\xrightarrow{{{(AC)}_{2}}O}\]\[X\xrightarrow{B{{r}_{2}}/CC{{l}_{4}}}Y\xrightarrow{HOH}Z\] [Kerala (Med.) 2003] |
| A. | p-Bromoaniline |
| B. | p -Bromoacetophenone |
| C. | o-Bromoacetophenone |
| D. | o-Bromoacetonilide |
| Answer» B. p -Bromoacetophenone | |
| 1903. |
\[+N{{H}_{2}}OH\to A\underset{{{H}_{3}}{{O}^{+}}}{\mathop{\xrightarrow{PPA}}}\,B\]. The product ?B? is [RPMT 2003] |
| A. | |
| B. | |
| C. | |
| D. | |
| Answer» D. | |
| 1904. |
Product obtained by electrolytic reduction of nitrobenzene in presence of \[{{H}_{2}}S{{O}_{4}}\] is [RPMT 2003] |
| A. | o-amino phenol |
| B. | m-amino phenol |
| C. | p-amino phenol |
| D. | None of these |
| Answer» D. None of these | |
| 1905. |
Ethyl amine undergoes oxidation in the presence of \[KMn{{O}_{4}}\] to form [CPMT 1985] |
| A. | An acid |
| B. | An alcohol |
| C. | An aldehyde |
| D. | A nitrogen oxide |
| Answer» D. A nitrogen oxide | |
| 1906. |
Product ?A? in above reaction is [RPMT 2003] |
| A. | |
| B. | |
| C. | |
| D. | None of these |
| Answer» C. | |
| 1907. |
p-chloro aniline and anilinium hydrogen chloride can be distinguished by [UPSEAT 2003] |
| A. | Sandmaeyer reaction |
| B. | Carbyl amine reaction |
| C. | Hinsberg?s reaction |
| D. | \[AgN{{O}_{3}}\] |
| Answer» E. | |
| 1908. |
The refluxing of \[{{(C{{H}_{3}})}_{2}}NCOC{{H}_{3}}\]with acid gives [BHU 2002; BVP 2003] |
| A. | \[{{(C{{H}_{3}})}_{2}}NH+C{{H}_{3}}COOH\] |
| B. | \[{{(C{{H}_{3}})}_{2}}NCOOH+C{{H}_{4}}\] |
| C. | \[2C{{H}_{3}}OH+C{{H}_{3}}CON{{H}_{2}}\] |
| D. | \[2C{{H}_{3}}N{{H}_{2}}+C{{H}_{3}}COOH\] |
| Answer» B. \[{{(C{{H}_{3}})}_{2}}NCOOH+C{{H}_{4}}\] | |
| 1909. |
Ethyl amine on acetylation gives [BHU 2002; BVP 2003] |
| A. | N-ethyl acetamide |
| B. | Acetamide |
| C. | Methyl acetamide |
| D. | None |
| Answer» B. Acetamide | |
| 1910. |
Hydrolysis of acetonitrile in acidic medium produces [CPMT 2003; RPMT 2003] |
| A. | \[C{{H}_{3}}C{{H}_{2}}OH\] |
| B. | \[C{{H}_{3}}COOH\] |
| C. | \[C{{H}_{3}}NC\] |
| D. | \[C{{H}_{3}}COOC{{H}_{3}}\] |
| Answer» C. \[C{{H}_{3}}NC\] | |
| 1911. |
During acetylation of amines what is replaced by acetyl groups [UPSEAT 2002] |
| A. | Hydrogen atom attached to nitrogen atom |
| B. | One or more hydrogen atoms attached to carbon atom |
| C. | One or more hydrogen atoms attached to nitrogen atom |
| D. | Hydrogen atoms attached to either carbon atom or nitrogen atom |
| Answer» D. Hydrogen atoms attached to either carbon atom or nitrogen atom | |
| 1912. |
Which one of the following reducing agents is likely to be the most effective in bringing about the following change \[R-\overset{O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{\overset{||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{C\,N{{H}_{2}}\to RC{{H}_{2}}N{{H}_{2}}}}\,}}\,\] [AMU 2002] |
| A. | \[{{H}_{2}}-Ni\] |
| B. | \[NaB{{H}_{4}}\] |
| C. | \[LiAl{{H}_{4}}\] |
| D. | Na-alcohol |
| Answer» B. \[NaB{{H}_{4}}\] | |
| 1913. |
Mustard gas is obtained by [MP PET 2002] |
| A. | The action of dilute acids on mustard seeds |
| B. | Treating ethylene with mustard oil |
| C. | Treating sulphur chloride with ethylene |
| D. | None of these |
| Answer» D. None of these | |
| 1914. |
The product formed when benzene is nitrated by fuming nitric acid is [MP PMT 1979] |
| A. | m-dinitrobenzene |
| B. | Nitrobenzene |
| C. | sym-trinitrobenzene |
| D. | None of these |
| Answer» D. None of these | |
| 1915. |
Which of the following amine will not react with nitrous acid to give nitrogen [NCERT 1984] |
| A. | \[C{{H}_{3}}N{{H}_{2}}\] |
| B. | \[C{{H}_{3}}-C{{H}_{2}}-N{{H}_{2}}\] |
| C. | \[\underset{C{{H}_{3}}}{\mathop{\underset{|\,\,\,\,\,\,}{\mathop{C{{H}_{3}}-CH-N{{H}_{2}}}}\,}}\,\] |
| D. | \[{{(C{{H}_{3}})}_{3}}N\] |
| Answer» E. | |
| 1916. |
\[{{C}_{6}}{{H}_{6}}C{{l}_{6}}\], on treatment with alcoholic \[KOH\], yields [AFMC 2000] |
| A. | \[{{C}_{6}}{{H}_{6}}\] |
| B. | \[{{C}_{6}}{{H}_{3}}C{{l}_{3}}\] |
| C. | \[({{C}_{6}}{{H}_{6}})\ OH\] |
| D. | \[{{C}_{6}}{{H}_{6}}C{{l}_{4}}\] |
| Answer» C. \[({{C}_{6}}{{H}_{6}})\ OH\] | |
| 1917. |
Which of the following alkyl halide is used as a methylating agent [KCET (Med.) 2000; MP PET 1999] |
| A. | \[C{{H}_{3}}I\] |
| B. | \[{{C}_{2}}{{H}_{5}}Br\] |
| C. | \[{{C}_{2}}{{H}_{5}}Cl\] |
| D. | \[{{C}_{6}}{{H}_{5}}Cl\] |
| Answer» B. \[{{C}_{2}}{{H}_{5}}Br\] | |
| 1918. |
Which of the following gases are poisonous [Pb. PMT 2000] |
| A. | \[CHC{{l}_{3}}\] |
| B. | \[C{{O}_{2}}\] |
| C. | None of these |
| D. | \[CO\] |
| Answer» E. | |
| 1919. |
Which reaction is correct in the conversion of chloroform to acetylene [Pb. PMT 2000] |
| A. | \[CHC{{l}_{3}}+AgN{{O}_{3}}\] |
| B. | \[CHC{{l}_{3}}+{{O}_{2}}\] |
| C. | \[CHC{{l}_{3}}+HN{{O}_{3}}\] |
| D. | \[CHC{{l}_{3}}+Ag\] |
| Answer» E. | |
| 1920. |
Phenol reacts with \[CHC{{l}_{3}}\] and NaOH (at \[340K\]) to give [MP PMT 1997; CBSE PMT 2002] |
| A. | o-chlorophenol |
| B. | Salicylaldehyde |
| C. | Benzaldehyde |
| D. | Chlorobenzene |
| Answer» C. Benzaldehyde | |
| 1921. |
When methyl bromide is heated with\[Zn\]it gives [MP PMT 2001] |
| A. | \[C{{H}_{4}}\] |
| B. | \[{{C}_{2}}{{H}_{6}}\] |
| C. | \[{{C}_{2}}{{H}_{4}}\] |
| D. | \[C{{H}_{3}}OH\] |
| Answer» C. \[{{C}_{2}}{{H}_{4}}\] | |
| 1922. |
\[R-X+NaOH\xrightarrow{{}}ROH+NaX\] The above reaction is classified as [BHU 1982; CBSE PMT 1991; RPET 2000] |
| A. | Nucleophilic substitution |
| B. | Electrophilic substitution |
| C. | Reduction |
| D. | Oxidation |
| Answer» B. Electrophilic substitution | |
| 1923. |
Alkyl halides can be converted into Grignard reagents by [KCET 1989] |
| A. | Boiling them with Mg ribbon in alcoholic solution |
| B. | Warming them with magnesium powder in dry ether |
| C. | Refluxing them with \[MgC{{l}_{2}}\] solution |
| D. | Warming them with \[MgC{{l}_{2}}\] |
| Answer» C. Refluxing them with \[MgC{{l}_{2}}\] solution | |
| 1924. |
Vinyl chloride reacts with \[HCl\] to form [JIPMER 2000] |
| A. | 1, 1- dichloro ethane |
| B. | 1, 2- dichloro ethane |
| C. | Tetrachloro ethylene |
| D. | Mixture of 1, 2 and 1, 1 - dichloro ethane |
| Answer» B. 1, 2- dichloro ethane | |
| 1925. |
Chloroform is slowly oxidise by air in presence of light to form [MH CET 1999; UPSEAT 2001, 02; RPMT 2003] |
| A. | Formyl chloride |
| B. | Phosgene |
| C. | Trichloroacetic acid |
| D. | Formic acid |
| Answer» C. Trichloroacetic acid | |
| 1926. |
False statement is [RPET 1999] |
| A. | Chloroform is heavier than water |
| B. | \[CC{{l}_{4}}\] is non-inflammable |
| C. | Vinyl chloride is more reactive than allyl chloride |
| D. | \[B{{r}^{-}}\] is a good nucleophile as compared to \[{{I}^{-}}\] |
| Answer» D. \[B{{r}^{-}}\] is a good nucleophile as compared to \[{{I}^{-}}\] | |
| 1927. |
The reaction between chlorobenzene and chloral in the presence of concentrated sulphuric acid produces [Pb. PMT 2001] |
| A. | Gammexane |
| B. | p,p-dichloro diphenyl trichloro ethane |
| C. | Chloropicrin |
| D. | Benzene hexachloride |
| Answer» C. Chloropicrin | |
| 1928. |
\[AgN{{O}_{3}}\]does not give precipitate with \[CHC{{l}_{3}}\] because [MP PET 1999; CPMT 2002] |
| A. | \[CHC{{l}_{3}}\]does not ionise in water |
| B. | \[AgN{{O}_{3}}\]does not reacts with \[CHC{{l}_{3}}\] |
| C. | \[CHC{{l}_{3}}\] is chemically inert |
| D. | None of these |
| Answer» B. \[AgN{{O}_{3}}\]does not reacts with \[CHC{{l}_{3}}\] | |
| 1929. |
\[C{{H}_{3}}-C{{H}_{2}}-Br\xrightarrow{\text{alc}\text{.KCN}}\]\[C{{H}_{3}}C{{H}_{2}}CN\]\[\xrightarrow{\text{HOH}}X\] In this reaction, product X is [MH CET 2002] |
| A. | Acetic acid |
| B. | Propionic acid |
| C. | Butyric acid |
| D. | Formic acid |
| Answer» C. Butyric acid | |
| 1930. |
The less reactivity of chlorine atom in \[C{{H}_{2}}=CH-Cl\] is due to [DCE 2001] |
| A. | Inductive effect |
| B. | Resonance stabilization |
| C. | Electromeric effect |
| D. | Electronegativity |
| Answer» C. Electromeric effect | |
| 1931. |
A mixture of two organic chlorine compounds was treated with sodium metal in ether solution. Isobutane was obtained as a product. The two chlorine compounds are [KCET 1988] |
| A. | Methyl chloride and propyl chloride |
| B. | Methyl chloride and ethyl chloride |
| C. | Isopropyl chloride and methyl chloride |
| D. | Isopropyl chloride and ethyl chloride |
| Answer» D. Isopropyl chloride and ethyl chloride | |
| 1932. |
Chloroform for anesthetic purposes is tested for its purity with the reagent [DPMT 2001] |
| A. | Silver nitrate |
| B. | Lead nitrate |
| C. | Ammoniacal \[C{{u}_{2}}C{{l}_{2}}\] |
| D. | Lead nitrate |
| Answer» B. Lead nitrate | |
| 1933. |
Methyl chloride reacts with silver acetate to yield [BVP 2003] |
| A. | Acetaldehyde |
| B. | Acetyl chloride |
| C. | Methyl acetate |
| D. | Acetic acid |
| Answer» D. Acetic acid | |
| 1934. |
Aryl halide is less reactive than alkyl halide towards nucleophilic substitution because [RPMT 2002] |
| A. | Less stable carbonium ion |
| B. | Due to large \[C-Cl\]bond energy |
| C. | Inductive effect |
| D. | Resonance stabilization and \[s{{p}^{2}}\]- hybridisation of C attached to halide |
| Answer» E. | |
| 1935. |
Which of the following are correct statements about \[{{C}_{2}}{{H}_{5}}Br\] [Roorkee 1999] |
| A. | It reacts with metallic Na to give ethane |
| B. | It gives nitroethane on heating with aqueous ethanolic solution of \[AgN{{O}_{2}}\] |
| C. | It gives \[{{C}_{2}}{{H}_{5}}OH\]on boiling with alcoholic potash |
| D. | It forms ethylacetate on heating with silver acetate |
| Answer» C. It gives \[{{C}_{2}}{{H}_{5}}OH\]on boiling with alcoholic potash | |
| 1936. |
By heating a mixture of \[CHC{{l}_{3}}\]with silver powder, the compound formed is [Kurukshetra CET 2002] |
| A. | Acetylene |
| B. | Silver acetate |
| C. | Methanol |
| D. | None of these |
| Answer» B. Silver acetate | |
| 1937. |
Chloropicrin is [Kurukshetra CET 2002] |
| A. | Trichloro acetaldehyde |
| B. | Nitrochloroform |
| C. | 2, 4, 6-trinitro phenol |
| D. | None of these |
| Answer» C. 2, 4, 6-trinitro phenol | |
| 1938. |
When \[C{{H}_{3}}C{{H}_{2}}CHC{{l}_{2}}\] is treated with \[NaN{{H}_{2,}}\] the product formed is [CBSE PMT 2002] |
| A. | \[C{{H}_{3}}-CH=C{{H}_{2}}\] |
| B. | \[C{{H}_{3}}-C\equiv CH\] |
| C. | \[C{{H}_{3}}C{{H}_{2}}CH(N{{H}_{2}})(Cl)\] |
| D. | \[C{{H}_{3}}C{{H}_{2}}C{{(N{{H}_{2}})}_{2}}\] |
| Answer» E. | |
| 1939. |
Alkyl halide on heating with alc. \[N{{H}_{3}}\]in a sealed tube results? [Orissa JEE 2002] |
| A. | \[1{}^\circ \] amine |
| B. | \[2{}^\circ \] amine |
| C. | \[3{}^\circ \] amine |
| D. | All of these |
| Answer» E. | |
| 1940. |
In the following sequence of reactions \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}Br\xrightarrow{KOH(alc)}(A)\xrightarrow{HBr}(B)\xrightarrow{KOH\,(aq.)}(C),\]The product is [JIPMER 2001] |
| A. | Propan - 2 - ol |
| B. | Propan - l - ol |
| C. | Propyne |
| D. | Propene |
| Answer» B. Propan - l - ol | |
| 1941. |
Alkyl halides react with Mg in dry ether to form [DPMT 2000; MP PET 2001] |
| A. | Magnesium halide |
| B. | Grignard's reagent |
| C. | Alkene |
| D. | Alkyne |
| Answer» C. Alkene | |
| 1942. |
When chloroform is treated with amine and KOH, we get [CPMT 1979] |
| A. | Rose odour smell |
| B. | Sour almond like smell |
| C. | Offensive odour |
| D. | Sour oil of winter green like smell |
| Answer» D. Sour oil of winter green like smell | |
| 1943. |
The set of compounds in which the reactivity of halogen atom in the ascending order is [KCET (Engg.) 2002] |
| A. | Vinyl chloride, chlorethane, chlorobenzene |
| B. | Vinyl chloride, chlorobenzene, chloroethane |
| C. | Chloroethane, chlorobenzene, vinyl chloride |
| D. | Chlorobenzene, vinyl chloride chloroethane |
| Answer» E. | |
| 1944. |
Haloalkane in the presence of alcoholic KOH undergoes [KCET (Engg/Med.) 2002] |
| A. | Elimination |
| B. | Polymerisation |
| C. | Dimerisation |
| D. | Substitution |
| Answer» B. Polymerisation | |
| 1945. |
What is the product formed in the following reaction \[{{C}_{6}}{{H}_{5}}OH+CC{{l}_{4}}\underset{(2)\,\,{{H}^{+}}}{\mathop{\xrightarrow{(1)\,\,NaOH}}}\,\] [KCET 1998] |
| A. | p-hydroxybenzoic acid |
| B. | o-hydroxybenzoic acid |
| C. | Benzaldehyde |
| D. | Salicylaldehyde |
| Answer» C. Benzaldehyde | |
| 1946. |
When chloroform is treated with excess oxygen it forms [MH CET 1999] |
| A. | \[COC{{l}_{2}}+HCl\] |
| B. | \[COC{{l}_{2}}+C{{l}_{2}}+{{H}_{2}}\] |
| C. | \[COC{{l}_{2}}+C{{l}_{2}}+{{H}_{2}}O\] |
| D. | No product will be formed |
| Answer» D. No product will be formed | |
| 1947. |
Dehydrohalogenation of an alkyl halide is [MP PMT 1996] |
| A. | An addition reaction |
| B. | A substitution reaction |
| C. | An elimination reaction |
| D. | An oxidation reaction |
| Answer» D. An oxidation reaction | |
| 1948. |
A sample of chloroform being used as anaesthetic is tested by [AIIMS 1980; CPMT 1983] |
| A. | Fehling solution |
| B. | Ammoniacal \[C{{u}_{2}}C{{l}_{2}}\] |
| C. | \[AgN{{O}_{3}}\] solution |
| D. | \[AgN{{O}_{3}}\] solution after boiling with alcoholic \[KOH\] solution |
| Answer» D. \[AgN{{O}_{3}}\] solution after boiling with alcoholic \[KOH\] solution | |
| 1949. |
When chloroform is treated with conc. \[HN{{O}_{3}}\] it gives [CPMT 1986; MP PMT 1989; AFMC 1998, 99; EAMCET 1991; BHU 1999] |
| A. | \[CHC{{l}_{2}}N{{O}_{2}}\] |
| B. | \[CC{{l}_{3}}N{{O}_{2}}\] |
| C. | \[CHC{{l}_{2}}HN{{O}_{3}}\] |
| D. | None of these |
| Answer» C. \[CHC{{l}_{2}}HN{{O}_{3}}\] | |
| 1950. |
Phosgene is the common name for [DPMT 1983; CPMT 1993; MP PMT 1994; Kurukshetra CEE 1998; RPMT 2000, 02] |
| A. | \[C{{O}_{2}}\] and \[P{{H}_{3}}\] |
| B. | Phosphoryl chloride |
| C. | Carbonyl chloride |
| D. | Carbon tetrachloride |
| Answer» D. Carbon tetrachloride | |