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question_answer1)
In the case homologous series of alkanes, which one of the following statements is incorrect? [JIPMER 2000]
A)
The members of the series are isomers of each other done
clear
B)
The members of the series have similar chemical properties done
clear
C)
The members of the series have the general formula\[{{C}_{n}}{{H}_{2n+2}}\], where n is an integer done
clear
D)
The difference between any two successive members of the series corresponds to 14 unit of relative atomic mass done
clear
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question_answer2)
How many primary, secondary, tertiary and quaternary carbons are present in the following hydrocarbon \[C{{H}_{3}}-CH(C{{H}_{3}})-C{{(C{{H}_{3}})}_{2}}-C{{H}_{2}}-CH(C{{H}_{3}})-C{{H}_{2}}-C{{H}_{3}}\]
A)
Primary-6 Secondary-2 Tertiary-2 Quaternary-1 done
clear
B)
Primary-2 Secondary-6 Tertiary-3 Quaternary-0 done
clear
C)
Primary-2 Secondary-4 Tertiary-3 Quaternary-2 done
clear
D)
Primary-2 Secondary-2 Tertiary-4 Quaternary-3 done
clear
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question_answer3)
The octane number of a sample of petrol is 40. It means that its knocking property is equal to the mixture of [MP PMT 2003]
A)
40% n-heptane + 60% iso-octane done
clear
B)
40% petrol + 60% iso-octane done
clear
C)
60% n-heptane + 40% iso-octane done
clear
D)
60% petrol + 40% iso-octane done
clear
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question_answer4)
Formation of 2-butene as major product by dehydration of 2-butanol is according to [MP PMT 1995]
A)
Markownikoff rule done
clear
B)
Saytzeff rule done
clear
C)
Peroxide effect done
clear
D)
Anti-Markownikoff rule done
clear
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question_answer5)
\[C{{H}_{3}}C\equiv CC{{H}_{3}}\underset{(ii){{H}_{2}}O/Zn}{\mathop{\xrightarrow{(i)\text{ }X}}}\,\underset{\,O\,\,\,\,\,\,O\,}{\mathop{\underset{|\,\,\,\,\,\,\,\,\,\,\,\,\,|}{\mathop{C{{H}_{3}}-C-C-C{{H}_{3}}}}\,}}\,\] X in the above reaction is [CPMT 1985; MP PET 1997; Roorkee Qualifying 1998; DPMT 2001]
A)
\[HN{{O}_{3}}\] done
clear
B)
\[{{O}_{2}}\] done
clear
C)
\[{{O}_{3}}\] done
clear
D)
\[KMn{{O}_{4}}\] done
clear
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question_answer6)
Which of the following is Friedel-Craft?s reaction [MP PET 1994]
A)
\[{{C}_{6}}{{H}_{6}}+FeC{{l}_{3}}+C{{l}_{2}}\to {{C}_{6}}{{H}_{5}}Cl\] done
clear
B)
\[{{C}_{6}}{{H}_{5}}CHO+C{{H}_{3}}CHO+KOH\to {{C}_{6}}{{H}_{5}}CH=CH-CHO\] done
clear
C)
\[{{C}_{6}}{{H}_{6}}+C{{H}_{3}}COCl+AlC{{l}_{3}}\to \overset{\,\,\,O}{\mathop{\overset{\,\,\,\,||}{\mathop{{{C}_{6}}{{H}_{5}}-C-C{{H}_{3}}}}\,}}\,\] done
clear
D)
\[{{C}_{6}}{{H}_{5}}OH+CHC{{l}_{3}}+KOH\xrightarrow{{}}\text{Salicylaldehyde}\] done
clear
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question_answer7)
Condition for maximum yield of \[{{C}_{2}}{{H}_{5}}Cl\] is [IIT-JEE 1986]
A)
\[{{C}_{2}}{{H}_{6}}\] (excess) \[+C{{l}_{2}}\xrightarrow{UV\text{ Light}}\] done
clear
B)
\[{{C}_{2}}{{H}_{6}}\] + \[C{{l}_{2}}\underset{\text{ Room}\,\text{temp}\text{.}}{\mathop{\xrightarrow{\text{Dark}}}}\,\] done
clear
C)
\[{{C}_{2}}{{H}_{6}}+C{{l}_{2}}\text{ (excess) }\xrightarrow{UV\text{ Light}}\] done
clear
D)
\[{{C}_{2}}{{H}_{6}}+C{{l}_{2}}\xrightarrow{UV\text{ Light}}\] done
clear
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question_answer8)
When ethyl alcohol is heated with red phosphorus and HI, then which of the following is formed [Kurukshetra CEE 1998]
A)
\[{{C}_{2}}{{H}_{6}}\] done
clear
B)
\[C{{H}_{4}}\] done
clear
C)
\[{{C}_{3}}{{H}_{8}}\] done
clear
D)
\[{{C}_{2}}{{H}_{4}}\] done
clear
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question_answer9)
In the Fischer-Tropsch synthesis of petrol..... and ..... are used as the raw materials [KCET 1998]
A)
\[{{H}_{2}};CO\] done
clear
B)
\[C{{H}_{4}};{{H}_{2}}\] done
clear
C)
\[C{{H}_{4}};C{{H}_{3}}OH\] done
clear
D)
\[C{{H}_{3}}OH;CO\] done
clear
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question_answer10)
Which one of the following reactions is most suitable for the preparation of n-propyl benzene [MP PET/PMT 1998]
A)
Friedel-Craft's reaction done
clear
B)
Wurtz reaction done
clear
C)
Wurtz-Fittig reaction done
clear
D)
Grignard reaction done
clear
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question_answer11)
Propane cannot be prepared from which reaction [DCE 2003]
A)
\[C{{H}_{3}}-CH=C{{H}_{2}}\underset{O{{H}^{-}}}{\mathop{\xrightarrow{{{B}_{2}}{{H}_{6}}}}}\,\] done
clear
B)
\[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}I\underset{P}{\mathop{\xrightarrow{HI}}}\,\] done
clear
C)
\[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}Cl\xrightarrow{Na}\] done
clear
D)
None of these done
clear
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question_answer12)
The reaction \[C{{H}_{3}}CH=C{{H}_{2}}\underset{{{H}^{^{+}}}}{\mathop{\xrightarrow{(CO+{{H}_{2}})}}}\,C{{H}_{3}}-\underset{COOH\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{\underset{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{CH-C{{H}_{3}}}}\,\,\,\,\,\,}}\,\,\,\] is known as [MP PMT 2002]
A)
Wurtz reaction done
clear
B)
Koch reaction done
clear
C)
Clemmensen reduction done
clear
D)
Kolbe?s reaction done
clear
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question_answer13)
The compound \[C{{H}_{3}}-\overset{C{{H}_{3}}}{\mathop{\overset{\,\,|\,\,\,\,\,\,\,\,\,\,\,}{\mathop{C\,\,=\,\,}}\,}}\,CH-C{{H}_{3}}\] on reaction with \[NaI{{O}_{4}}\]in the presence of \[KMn{{O}_{4}}\]gives [CBSE PMT 2003]
A)
\[C{{H}_{3}}CHO+C{{O}_{2}}\] done
clear
B)
\[C{{H}_{3}}COC{{H}_{3}}\] done
clear
C)
\[C{{H}_{3}}COC{{H}_{3}}+C{{H}_{3}}COOH\] done
clear
D)
\[C{{H}_{3}}COC{{H}_{3}}+C{{H}_{3}}CHO\] done
clear
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question_answer14)
In the reaction : \[HC\equiv CH+2AgN{{O}_{3}}\xrightarrow{N{{H}_{4}}OH}X+2N{{H}_{4}}N{{O}_{3}}+2{{H}_{2}}O\] ?X? is
A)
\[A{{g}_{2}}C\] done
clear
B)
\[A{{g}_{2}}{{C}_{2}}\] done
clear
C)
\[AgC\] done
clear
D)
\[AgOH\] done
clear
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question_answer15)
Naphthalene is a/an [AFMC 2004]
A)
Ionic solid done
clear
B)
Covalent solid done
clear
C)
Metallic solid done
clear
D)
Molecular solid done
clear
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question_answer16)
Which of the following is not aromatic [Pb. CET 2000]
A)
Benzene done
clear
B)
Naphthalene done
clear
C)
Pyridine done
clear
D)
1,3,5 heptatriene done
clear
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question_answer17)
Acetylene reacts with \[HCN\] in the presence of \[Ba{{(CN)}_{2}}\]to yield [UP SEAT 2004]
A)
1, 1-dicyanoethane done
clear
B)
1, 2-dicyanoethane done
clear
C)
Vinyl cyanide done
clear
D)
None of these done
clear
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question_answer18)
Write the products of the addition reaction \[\,\,\,\,\,C=C\,\,\,\,\,+XY\to \] [Kerala (Med.) 2002]
A)
\[\,\,\,\,\,\underset{X}{\mathop{>\underset{|}{\mathop{C}}\,}}\,-\underset{\,Y\,\,\,\,}{\mathop{\underset{|\,\,\,\,\,}{\mathop{C}}\,<}}\,\] done
clear
B)
\[X-\underset{|}{\mathop{C}}\,=\underset{|}{\mathop{C}}\,-Y\] done
clear
C)
\[\underset{|}{\overset{|}{\mathop{C}}}\,=\underset{Y}{\mathop{\underset{|}{\mathop{C}}\,}}\,-\] done
clear
D)
\[X-\underset{|}{\overset{|}{\mathop{C}}}\,-\underset{|}{\overset{|}{\mathop{C}}}\,-X\] done
clear
E)
\[\underset{|}{\overset{\overset{X}{\mathop{|}}\,}{\mathop{C}}}\,=\underset{\underset{Y}{\mathop{|}}\,}{\overset{|}{\mathop{C}}}\,\] done
clear
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question_answer19)
Formation of polyethylene from calcium carbide takes place as follows \[Ca{{C}_{2}}+2{{H}_{2}}O\to Ca{{(OH)}_{2}}+{{C}_{2}}{{H}_{2}}\] \[{{C}_{2}}{{H}_{2}}+{{H}_{2}}\to {{C}_{2}}{{H}_{4}}\] \[n({{C}_{2}}{{H}_{4}})\to {{(-C{{H}_{2}}-C{{H}_{2}}-)}_{n}}\] The amount of polyethylene obtained from 64.1 kg \[Ca{{C}_{2}}\] is [AIIMS 1997]
A)
7 kg done
clear
B)
14 kg done
clear
C)
21 kg done
clear
D)
28 kg done
clear
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question_answer20)
Nitrobenzene can be prepared from benzene by using a mixture of conc. \[HN{{O}_{3}}\] and conc. \[{{H}_{2}}S{{O}_{4}}.\] In the nitrating mixture, \[HN{{O}_{3}}\] acts as a [IIT-JEE 1997]
A)
Base done
clear
B)
Acid done
clear
C)
Reducing agent done
clear
D)
Catalyst done
clear
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question_answer21)
A group which deactivates the benzene ring towards electrophilic substitution but which directs the incoming group principally to the o- and p-positions is [Pb. PMT 1998]
A)
\[-N{{H}_{2}}\] done
clear
B)
\[-Cl\] done
clear
C)
\[-N{{O}_{2}}\] done
clear
D)
\[-{{C}_{2}}{{H}_{5}}\] done
clear
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question_answer22)
Which order is correct for the decreasing reactivity to ring monobromination of the following compounds \[\begin{align} & {{C}_{6}}{{H}_{5}}C{{H}_{3}}, \\ & \,\,\,\,\,\,\,\,\,\,\text{I} \\ \end{align}\] \[\begin{align} & {{C}_{6}}{{H}_{5}}COOH, \\ & \,\,\,\,\,\,\,\,\,\,\,\,\,\text{II} \\ \end{align}\] \[\begin{align} & {{C}_{6}}{{H}_{6}} \\ & \,\,\,\,\text{III} \\ \end{align}\] \[\begin{align} & {{C}_{6}}{{H}_{5}}N{{O}_{2}} \\ & \,\,\,\,\,\,\,\,\,\,\text{IV} \\ \end{align}\]
A)
\[I>II>III>IV\] done
clear
B)
\[I>III>II>I\] done
clear
C)
\[II>III>IV>I\] done
clear
D)
\[III>I>II>IV\] done
clear
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question_answer23)
Benzene is obtained by [DPMT 2002]
A)
Substitution of three acetylene molecules done
clear
B)
Addition of three \[{{C}_{2}}{{H}_{2}}\]molecules done
clear
C)
Polymerisation of three \[{{C}_{2}}{{H}_{2}}\] molecules done
clear
D)
Condensation of three \[{{C}_{2}}{{H}_{2}}\]molecules done
clear
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question_answer24)
Toluene can be oxidised to benzoic acid by [AIIMS 1999]
A)
\[KMN{{O}_{4}}\] done
clear
B)
\[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\] done
clear
C)
\[{{H}_{2}}S{{O}_{4}}\] done
clear
D)
Both A and B done
clear
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question_answer25)
\[Ca{{C}_{2}}+{{H}_{2}}O\to A\xrightarrow{{{H}_{2}}S{{O}_{4}}/HgS{{O}_{4}}}B\]. Identify A and B in the given reaction [CPMT 2000; BVP 2004]
A)
\[{{C}_{2}}{{H}_{2}}\]and \[C{{H}_{3}}CHO\] done
clear
B)
\[C{{H}_{4}}\]and \[HCOOH\] done
clear
C)
\[{{C}_{2}}{{H}_{4}}\]and\[C{{H}_{3}}COOH\] done
clear
D)
\[{{C}_{2}}{{H}_{2}}\]and \[C{{H}_{3}}COOH\] done
clear
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question_answer26)
The compound X on reaction with \[HgS{{O}_{4}}+{{H}_{2}}S{{O}_{4}}\] gives Y which on oxidation gives acetic acid. X is [MP PMT 1999]
A)
\[{{C}_{2}}{{H}_{2}}\] done
clear
B)
\[{{C}_{2}}{{H}_{4}}\] done
clear
C)
\[{{C}_{3}}{{H}_{4}}\] done
clear
D)
\[{{C}_{4}}{{H}_{6}}\] done
clear
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question_answer27)
What is formed when calcium carbide react with heavy water [CPMT 1999]
A)
\[{{C}_{2}}{{D}_{2}}\] done
clear
B)
\[Ca{{D}_{2}}\] done
clear
C)
\[Ca{{D}_{2}}O\] done
clear
D)
\[C{{D}_{2}}\] done
clear
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question_answer28)
The addition of HBr is easiest with \[\] [MP PMT 2000]
A)
\[ClC{{H}_{2}}=CHCl\] done
clear
B)
\[ClCH=CHCl\] done
clear
C)
\[C{{H}_{3}}-CH=C{{H}_{2}}\] done
clear
D)
\[{{(C{{H}_{3}})}_{2}}C=C{{H}_{2}}\] done
clear
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question_answer29)
Identify the species X in the reaction : \[\text{Propene }+O\text{ (conc}\text{. acidic }KMn{{O}_{4}})\to X+\text{Formic acid}\]
A)
Acetone done
clear
B)
Acetaldehyde done
clear
C)
Isopropanol done
clear
D)
Acetic acid done
clear
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question_answer30)
In benzene 1, 3 position is called
A)
Meta done
clear
B)
Para done
clear
C)
Ortho done
clear
D)
Odd position done
clear
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question_answer31)
Which of the following is formed as a result of biological oxidation of benzene in the body of the dog [Manipal MEE 1995]
A)
Acrylic acid done
clear
B)
Cinnamic acid done
clear
C)
Maleic acid done
clear
D)
Gluconic acid done
clear
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question_answer32)
When acetylene is reacted with HBr, we get [CPMT 1979; JIPMER 2002]
A)
Methyl bromide done
clear
B)
Ethyl bromide done
clear
C)
Ethylene bromide done
clear
D)
Ethylidene bromide done
clear
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question_answer33)
The only o, p-directing group which is deactivating in nature is
A)
\[-N{{H}_{2}}\] done
clear
B)
\[-OH\] done
clear
C)
\[-X\] (Halogens) done
clear
D)
\[-R\] (Alkyl groups) done
clear
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question_answer34)
Which kind of isomerism will butene-2 show
A)
Geometrical done
clear
B)
Optical done
clear
C)
Position done
clear
D)
None of these done
clear
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question_answer35)
In presence of light toluene on reaction with chlorine gives [RPET 1999]
A)
Benzoyl chloride done
clear
B)
Ortho chlorotoluene done
clear
C)
Para chloro toluene done
clear
D)
Benzyl chloride done
clear
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question_answer36)
If ethylene, carbon monoxide and water is heated at high temperature, which of the following is formed [AIIMS 2000]
A)
\[{{C}_{4}}{{H}_{8}}{{O}_{2}}\] done
clear
B)
\[{{C}_{2}}{{H}_{5}}COOH\] done
clear
C)
\[C{{H}_{3}}COOH\] done
clear
D)
\[C{{H}_{2}}=CH-COOH\] done
clear
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question_answer37)
Compound \[{{C}_{6}}{{H}_{12}}\] is an [AMU 1983]
A)
Aliphatic saturated compound done
clear
B)
Alicyclic compound done
clear
C)
Aromatic compound done
clear
D)
Heterocyclic compound done
clear
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question_answer38)
Identify Z in the following series \[C{{H}_{2}}=C{{H}_{2}}\xrightarrow{HBr}X\xrightarrow{\text{Hydrolysis}}Y\underset{{{I}_{2}}\text{ excess}}{\mathop{\xrightarrow{N{{a}_{2}}C{{O}_{3}}}}}\,Z\] [AIIMS 1983; RPMT 1999]
A)
\[{{C}_{2}}{{H}_{5}}I\] done
clear
B)
\[{{C}_{2}}{{H}_{5}}OH\] done
clear
C)
\[CH{{I}_{3}}\] done
clear
D)
\[C{{H}_{3}}CHO\] done
clear
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question_answer39)
n-pentane and iso pentane can be distinguished by [BVP 2004]
A)
\[B{{r}_{2}}\] done
clear
B)
\[{{O}_{3}}\] done
clear
C)
conc. \[{{H}_{2}}S{{O}_{4}}\] done
clear
D)
\[KMn{{O}_{4}}\] done
clear
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question_answer40)
\[CH\equiv CH+HBr\to X,\] product X is [Pb. CET 2003]
A)
Ethylene bromide done
clear
B)
Vinyl bromide done
clear
C)
Bromo ethane done
clear
D)
Ethyledine bromide done
clear
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