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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.
| 2001. |
Ethylene dichloride and ethylidine chloride are isomeric compounds. The false statement about these isomers is that they [DCE 2003] |
| A. | React with alcoholic potash and give the same product |
| B. | Are position isomers |
| C. | Contain the same percentage of chlorine |
| D. | Are both hydrolysed to the same product |
| Answer» E. | |
| 2002. |
Which of the following statements about benzyl chloride is incorrect [KCET 2004] |
| A. | It is less reactive than alkyl halides |
| B. | It can be oxidised to benzaldehyde by boiling with copper nitrate solution |
| C. | It is a lachrymatory liquid and answers Beilstein?s test |
| D. | It gives a white precipitate with alcoholic silver nitrate |
| Answer» B. It can be oxidised to benzaldehyde by boiling with copper nitrate solution | |
| 2003. |
Ethylene di bromide on heating with metallic sodium in ether solution yields [Pb. CET 2004] |
| A. | Ethene |
| B. | Ethyne |
| C. | 2-butene |
| D. | 1-butene |
| Answer» D. 1-butene | |
| 2004. |
The reaction, \[C{{H}_{3}}Br+Na\to \text{Product}\], is called [Pb. CET 2003] |
| A. | Perkin reaction |
| B. | Levit reaction |
| C. | Wurtz reaction |
| D. | Aldol condensation |
| Answer» D. Aldol condensation | |
| 2005. |
When benzene is heated with chlorine in the presence of sunlight, it forms [Pb. CET 2000] |
| A. | B.H.C. |
| B. | Cyclopropane |
| C. | p-dichlorobenzene |
| D. | None of these |
| Answer» B. Cyclopropane | |
| 2006. |
Two percent of ethanol is added during the oxidation of chloroform to stop the formation of carbonyl chloride. In this reaction ethanol acts as [Pb. CET 2001] |
| A. | Auto catalyst |
| B. | Negative catalyst |
| C. | Positive catalyst |
| D. | None of these |
| Answer» C. Positive catalyst | |
| 2007. |
Reaction of alkyl halides with aromatic compounds in presence of anhydrous \[AlC{{l}_{3}}\] is known as [UPSEAT 2004] |
| A. | Friedal-Craft reaction |
| B. | Hofmann degradation |
| C. | Kolbe's synthesis |
| D. | Beckmann rearrangement |
| Answer» B. Hofmann degradation | |
| 2008. |
Chloroform, on warming with Ag powder, gives [MH CET 2003] |
| A. | \[{{C}_{2}}{{H}_{6}}\] |
| B. | \[{{C}_{3}}{{H}_{8}}\] |
| C. | \[{{C}_{2}}{{H}_{4}}\] |
| D. | \[{{C}_{2}}{{H}_{2}}\] |
| Answer» E. | |
| 2009. |
When alkyl halide is heated with dry \[A{{g}_{2}}O\], it produces [CPMT 1997; BHU 2004] |
| A. | Ester |
| B. | Ether |
| C. | Ketone |
| D. | Alcohol |
| Answer» C. Ketone | |
| 2010. |
The reactivity of halogen atom is minimum in [KCET 1985] |
| A. | Propyl chloride |
| B. | Propyl iodide |
| C. | Isopropyl chloride |
| D. | Isopropyl bromide |
| Answer» D. Isopropyl bromide | |
| 2011. |
When ethyl chloride and alcoholic KOH are heated, the compound obtained is [MH CET 2003] |
| A. | \[{{C}_{2}}{{H}_{4}}\] |
| B. | \[{{C}_{2}}{{H}_{2}}\] |
| C. | \[{{C}_{6}}{{H}_{6}}\] |
| D. | \[{{C}_{2}}{{H}_{6}}\] |
| Answer» B. \[{{C}_{2}}{{H}_{2}}\] | |
| 2012. |
Chloroform reacts with concentrated \[HN{{O}_{3}}\] to give [Pb. CET 2000] |
| A. | Water gas |
| B. | Tear gas |
| C. | Laughing gas |
| D. | Producer gas |
| Answer» C. Laughing gas | |
| 2013. |
Chloroform, when kept open, is oxidised to [CPMT 2004] |
| A. | \[C{{O}_{2}}\] |
| B. | \[COC{{l}_{2}}\] |
| C. | \[C{{O}_{2}},\ C{{l}_{2}}\] |
| D. | None of these |
| Answer» C. \[C{{O}_{2}},\ C{{l}_{2}}\] | |
| 2014. |
Chloropicrin is obtained by the reaction of [CBSE PMT 2004] |
| A. | Chlorine on picric acid |
| B. | Nitric acid on chloroform |
| C. | Steam on carbon tetrachloride |
| D. | Nitric acid on chlorobenzene |
| Answer» C. Steam on carbon tetrachloride | |
| 2015. |
Among the following, the one which reacts most readily with ethanol is [AIIMS 2004] |
| A. | p-nitrobenzyl bromide |
| B. | p-chlorobenzyl bromide |
| C. | p-methoxybenzyl bromide |
| D. | p-methylbenzyl bromide |
| Answer» D. p-methylbenzyl bromide | |
| 2016. |
The compound added to prevent chloroform to form phosgene gas is [MP PET 2004] |
| A. | \[{{C}_{2}}{{H}_{5}}OH\] |
| B. | \[C{{H}_{3}}COOH\] |
| C. | \[C{{H}_{3}}COC{{H}_{3}}\] |
| D. | \[C{{H}_{3}}OH\] |
| Answer» B. \[C{{H}_{3}}COOH\] | |
| 2017. |
The reaction of an aeromatic halogen compound with an alkyl halides in presence of sodium and ether is called [MP PMT 2004] |
| A. | Wurtz reaction |
| B. | Sandmeyer's reaction |
| C. | Wurtz-fittig reaction |
| D. | Kolbe reaction |
| Answer» D. Kolbe reaction | |
| 2018. |
On treating a mixture of two alkyl halides with sodium metal in dry ether, 2-methyl propane was obtained. The alkyl halides are [KCET 2004] |
| A. | 2-chloropropane and chloromethane |
| B. | 2-chloropropane and chloroethane |
| C. | Chloromethane and chloroethane |
| D. | Chloromethane and 1-chloropropane |
| Answer» B. 2-chloropropane and chloroethane | |
| 2019. |
The reactivity of ethyl chloride is [KCET 1986] |
| A. | More or less equal to that of benzyl chloride |
| B. | More than that of benzyl chloride |
| C. | More or less equal to that of chlorobenzene |
| D. | Less than that of chlorobenzene |
| Answer» C. More or less equal to that of chlorobenzene | |
| 2020. |
An alkyl bromide produces a single alkene when it reacts with sodium ethoxide and ethanol. This alkene undergoes hydrogenation and produces 2-methyl butane. What is the identity of the alkyl bromide [Kerala PMT 2004] |
| A. | 1-bromo-2, 2-dimethylpropane |
| B. | 1-bromobutane |
| C. | 1-bromo-2-methylbutane |
| D. | 2-bromo-2-methylbutane |
| E. | 2-bromopentane |
| Answer» D. 2-bromo-2-methylbutane | |
| 2021. |
Allyl chloride on dehydro chlorination gives [Kerala (Med.) 2003] |
| A. | Propadiene |
| B. | Propylene |
| C. | Acetylchloride |
| D. | Acetone |
| Answer» B. Propylene | |
| 2022. |
Which one of the following compounds does not react with bromine [DPMT 1983] |
| A. | Ethylamine |
| B. | Propene |
| C. | Phenol |
| D. | Chloroform |
| Answer» E. | |
| 2023. |
In nucleophilic aliphatic substitution, the nucleophiles are generally |
| A. | Acids |
| B. | Bases |
| C. | Salts |
| D. | Neutral molecules |
| Answer» C. Salts | |
| 2024. |
Which halide will be least reactive in respect to hydrolysis [MP PET 2003] |
| A. | Vinyl chloride |
| B. | Allyl chloride |
| C. | Ethyl chloride |
| D. | t-Butyl chloride |
| Answer» B. Allyl chloride | |
| 2025. |
Which of the following is used as a catalyst for preparing Grignard reagent [KCET 1998] |
| A. | Iron powder |
| B. | Iodine powder |
| C. | Activated charcoal |
| D. | Manganese dioxide |
| Answer» C. Activated charcoal | |
| 2026. |
Chloroform with zinc dust in water gives [UPSEAT 2000] |
| A. | \[C{{H}_{4}}\] |
| B. | Chloropicrin |
| C. | \[CC{{l}_{4}}\] |
| D. | \[C{{H}_{2}}C{{l}_{2}}\] |
| Answer» B. Chloropicrin | |
| 2027. |
Which is not present in Grignard reagent [CBSE PMT 1991] |
| A. | Methyl group |
| B. | Magnesium |
| C. | Halogen |
| D. | \[-COOH\] group |
| Answer» E. | |
| 2028. |
The reaction\[C{{H}_{3}}COOH+C{{l}_{2}}\xrightarrow{P}ClC{{H}_{2}}COOH+HCl\] is called [NSE 2001; MP PET 2003] |
| A. | Hell-Volhard-Zelinsky reaction |
| B. | Birch reaction |
| C. | Rosenmund reaction |
| D. | Hunsdiecker reaction |
| Answer» B. Birch reaction | |
| 2029. |
Acetamide reacts with \[{{P}_{2}}{{O}_{5}}\] (phosphorus pentaoxide) to give [AFMC 1997] |
| A. | Methyl cyanide |
| B. | Methyl cyanate |
| C. | Ethyl cyanide |
| D. | Ethyl isocyanate |
| Answer» B. Methyl cyanate | |
| 2030. |
Lower carboxylic acids are soluble in water due to [MP PET 1999] |
| A. | Low molecular weight |
| B. | Hydrogen bonding |
| C. | Dissociation into ions |
| D. | Easy hydrolysis |
| Answer» C. Dissociation into ions | |
| 2031. |
In the esterification reaction of alcohols [KCET 1984] |
| A. | \[O{{H}^{-}}\] is replaced by \[{{C}_{6}}{{H}_{5}}OH\] |
| B. | \[{{H}^{+}}\] is replaced by sodium metal |
| C. | \[O{{H}^{-}}\] is replaced by chlorine |
| D. | \[O{{H}^{-}}\] is replaced by \[C{{H}_{3}}CO{{O}^{-}}\] group |
| Answer» E. | |
| 2032. |
In the preparation of an ester, the commonly used dehydrating agent is [KCET 1992] |
| A. | Phosphorus pentaxide |
| B. | Anhydrous calcium carbide |
| C. | Anhydrous aluminium chloride |
| D. | Concentrated sulphuric acid |
| Answer» E. | |
| 2033. |
Benzoic acid gives benzene on being heated with X and phenol gives benzene on being heated with Y. Therefore X and Y are respectively [CBSE PMT 1992] |
| A. | Sodalime and copper |
| B. | Zn dust and NaOH |
| C. | Zn dust and sodalime |
| D. | Sodalime and zinc dust |
| Answer» E. | |
| 2034. |
Acetyl chloride is reduced with \[LiAl{{H}_{4}}\] the product formed is [SCRA 1990] |
| A. | Methyl alcohol |
| B. | Ethyl alcohol |
| C. | Acetaldehyde |
| D. | Acetone |
| Answer» C. Acetaldehyde | |
| 2035. |
What are the organic products formed in the following reaction \[{{C}_{6}}{{H}_{5}}-COO-C{{H}_{3}}\underset{2.\,{{H}_{2}}O}{\mathop{\xrightarrow{1.\,LiAl{{H}_{4}}}}}\,\] [IIT 1995] |
| A. | \[{{C}_{6}}{{H}_{5}}-COOH\] and \[C{{H}_{4}}\] |
| B. | \[{{C}_{6}}{{H}_{5}}-C{{H}_{2}}-OH\] and \[C{{H}_{4}}\] |
| C. | \[{{C}_{6}}{{H}_{5}}-C{{H}_{3}}\] and \[C{{H}_{3}}-OH\] |
| D. | \[{{C}_{6}}{{H}_{5}}-C{{H}_{2}}-OH\] and \[C{{H}_{3}}-OH\] |
| Answer» E. | |
| 2036. |
The acid which reduces Fehling solution is [KCET 1998] |
| A. | Methanoic acid |
| B. | Ethanoic acid |
| C. | Butanoic acid |
| D. | Propanoic acid |
| Answer» B. Ethanoic acid | |
| 2037. |
Urea can be tested by [UPSEAT 1999; BVP 2003] |
| A. | Benedict test |
| B. | Mullicken test |
| C. | Ninhydrin |
| D. | Biuret test |
| Answer» E. | |
| 2038. |
\[RCOOH\xrightarrow{{}}RC{{H}_{2}}OH\] This mode of reduction of an acid to alcohol can be affected only by [CBSE PMT 1989] |
| A. | \[Zn/HCl\] |
| B. | Na-alcohol |
| C. | Aluminium isopropoxide and isopropyl alcohol |
| D. | \[LiAl{{H}_{4}}\] |
| Answer» E. | |
| 2039. |
Lactic acid on oxidation by alkaline potassium permanganate gives [Tamil Nadu CET 2002] |
| A. | Tartaric acid |
| B. | Pyruvic acid |
| C. | Cinnamic acid |
| D. | Propionic acid |
| Answer» C. Cinnamic acid | |
| 2040. |
Saponification of ethyl benzoate with caustic soda as alkali gives [Kerala (Med.) 2001] |
| A. | Benzyl alcohol and ethanoic acid |
| B. | Sodium benzoate and ethanol |
| C. | Benzoic acid and sodium ethoxide |
| D. | Phenol and ethanoic acid |
| E. | Sodium benzoxide and ethanoic acid |
| Answer» C. Benzoic acid and sodium ethoxide | |
| 2041. |
Right order of acidic strength is [RPMT 2003] |
| A. | \[C{{H}_{2}}ClCOOH>HCOOH>\]\[{{C}_{2}}{{H}_{5}}COOH>C{{H}_{3}}COOH\] |
| B. | \[C{{H}_{2}}ClCOOH\ \ >HCOOH\ \ >\]\[C{{H}_{3}}COOH\ \ >{{C}_{2}}{{H}_{5}}COOH\] |
| C. | \[{{C}_{2}}{{H}_{5}}COOH\ \ >\ C{{H}_{3}}COOH\ \ >\]\[HCOOH\ \ >C{{H}_{2}}ClCOOH\] |
| D. | \[HCOOH\ \ >C{{H}_{2}}ClCOOH\ \ >\]\[C{{H}_{3}}COOH\ \ >{{C}_{2}}{{H}_{5}}COOH\] |
| Answer» C. \[{{C}_{2}}{{H}_{5}}COOH\ \ >\ C{{H}_{3}}COOH\ \ >\]\[HCOOH\ \ >C{{H}_{2}}ClCOOH\] | |
| 2042. |
Order of reactivity is [RPMT 2003] |
| A. | \[R-\overset{\overset{O}{\mathop{||}}\,}{\mathop{C}}\,-X\ \ >RCON{{H}_{2}}\ \ >RCOOCOR\ \ >RCOOR\] |
| B. | \[RCOX\ >RCOOCOR\ >RCOOR\ >RCON{{H}_{2}}\] |
| C. | \[RCOOR\ >RCON{{H}_{2}}\ >RCOX\ >RCOOCOR\] |
| D. | \[RCOOCOR\ >RCOOR\ >RCOX\ >RCON{{H}_{2}}\] |
| Answer» C. \[RCOOR\ >RCON{{H}_{2}}\ >RCOX\ >RCOOCOR\] | |
| 2043. |
The reagent that can be used to distinguish between methanoic acid and ethanoic acid is [Kerala CET 2001, 02] |
| A. | Ammoniacal silver nitrate solution |
| B. | Neutral ferric Chloride solution |
| C. | Sodium carbonate solution |
| D. | Phenolphthalein |
| Answer» B. Neutral ferric Chloride solution | |
| 2044. |
Hydrolysis of an ester gives acid A and alcohol B. A reduces Fehling solution and oxidation of B gives A. The ester is [MP PMT 1999] |
| A. | Methyl formate |
| B. | Ethyl formate |
| C. | Methyl acetate |
| D. | Ethyl acetate |
| Answer» B. Ethyl formate | |
| 2045. |
When acetamide is treated with \[NaOBr,\] the product formed is [Haryana CEET 2000] |
| A. | \[C{{H}_{3}}CN\] |
| B. | \[C{{H}_{3}}C{{H}_{2}}N{{H}_{2}}\] |
| C. | \[C{{H}_{3}}N{{H}_{2}}\] |
| D. | None of the above |
| Answer» D. None of the above | |
| 2046. |
Which of the following orders of relative strengths of acids is correct [CPMT 2000] |
| A. | \[FC{{H}_{2}}COOH\,>\,ClC{{H}_{2}}COOH>BrC{{H}_{2}}COOH\] |
| B. | \[ClC{{H}_{2}}COOH>\,BrC{{H}_{2}}COOH>FC{{H}_{2}}COOH\] |
| C. | \[BrC{{H}_{2}}COOH>ClC{{H}_{2}}COOH>FC{{H}_{2}}COOH\] |
| D. | \[ClC{{H}_{2}}COOH>FC{{H}_{2}}COOH>BrC{{H}_{2}}COOH\] |
| Answer» B. \[ClC{{H}_{2}}COOH>\,BrC{{H}_{2}}COOH>FC{{H}_{2}}COOH\] | |
| 2047. |
Which one of the following orders is wrong with respect to the property indicated [CBSE PMT 1994] |
| A. | Formic acid > acetic acid > propanoic acid (acid strength) |
| B. | Fluoroacetic acid > chloroacetic acid > bromoacetic acid (acid strength) |
| C. | Benzoic acid > phenol > cyclohexanol (acid strength) |
| D. | Aniline > cyclohexylamine > benzamide (basic strength) |
| Answer» E. | |
| 2048. |
An acyl halide is formed when \[PC{{l}_{5}}\] reacts with an [CBSE PMT 1994; AIIMS 1998; CBSE PMT 2002] |
| A. | Acid |
| B. | Alcohol |
| C. | Amide |
| D. | Ester |
| Answer» B. Alcohol | |
| 2049. |
Which one of the following compound gives aspirin on reacting with acetic anhydride in presence of \[{{H}_{2}}S{{O}_{4}}\] [EAMCET 2003] |
| A. | |
| B. | |
| C. | |
| D. | |
| Answer» C. | |
| 2050. |
The principal organic product formed in the following reaction is \[C{{H}_{2}}=CH{{(C{{H}_{2}})}_{8}}COOH+HBr\xrightarrow{\text{peroxide}}\] [Pb. PMT 1998] |
| A. | \[C{{H}_{3}}CHBr{{(C{{H}_{2}})}_{8}}COOH\] |
| B. | \[C{{H}_{2}}=CH{{(C{{H}_{2}})}_{8}}COBr\] |
| C. | \[C{{H}_{2}}BrC{{H}_{2}}{{(C{{H}_{2}})}_{8}}COOH\] |
| D. | \[C{{H}_{2}}=CH{{(C{{H}_{2}})}_{7}}CHBrCOOH\] |
| Answer» D. \[C{{H}_{2}}=CH{{(C{{H}_{2}})}_{7}}CHBrCOOH\] | |