JEE Questions for Chemistry Organic Chemistry Some Basic Principles And Techniques Quiz 13 - MCQExams.com


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  • 20
  • 40
  • 60
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When SCN - is added to an aqueous solution containing Fe(NO ) 3 , the complex ion produced is
  • [Fe(OH2)2 (SCN)]2+
  • [Fe(OH2)5 (SCN)]2+
  • [Fe(OH2)8 (SCN)]2+
  • [Fe(OH(SCN)]6+
Which of the following complex formation indicates presence of sulphur in the organic compound when sodium nitroprusside is added to sodium extract of the compound ?
  • Fe 4 [Fe(CN)6 ]3
  • Na 2 [Fe(NO) (CN)5 ]
  • Fe4 (CNS)3
  • Na 4 [Fe(CN)5 NOS]
During the fusion of an organic compound with sodium metal, nitrogen of the compound is converted into
  • NaNO 2
  • NaNH2
  • NaCN
  • NaNC
In compound, CH2 = CH - CH2 - CH2 - C ≡ H, the C2 — C3 bond is of the type
  • sp - sp2
  • sp3 - sp3
  • sp - sp3
  • sp2 - sp3
An organic compound having molecular mass 60 is found to contain 20% C, 6.67% H and 46.67% N while rest is oxygen. On heating, it gives NH3 along with a solid residue. The solid residue gives violet colour with alkaline copper sulphate solution. The compound is
  • CH3 CH2 CONH2
  • (NH2 )2 CO
  • CH3 CONH2
  • CH3 NCO
Na2S + Na2[Fe(CN)5NO] → purple colour.
It is due to
  • Na 4 [Fe(CN)3 NOS]
  • Na3 [Fe(CN)5 NOS]
  • Na4 [Fe(CN)5 NO]
  • Na 4 [Fe(CN)5 NOS]
The compound formed in the positive test for nitrogen with the Lassaigne's solution of an organic compound is
  • Fe4 [Fe(CN)6 ] 3
  • Na 3 [Fe(CN)6 ]
  • Fe(CN)3
  • Na4 [Fe(CN)5 NOS]
KI in acetone undergoes SN2 reaction with each P, Q, R and S.
Chemistry-Organic Chemistry Some Basic Principles and Techniques-6534.png
  • P > Q > R > S
  • S > P > R > Q
  • P > R > Q > S
  • R > P > S > Q
Which one of the following compounds does not follow Markownikoff's rule?
  • (a) CH3 —CH=CH2
  • (b) CH3 CH=CHCH3

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6535.png
  • (d) CH3 —CH2 —CH=CH2
Which one of the following will most readily dehydrated in acidic solution?

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6536.png
  • 2)
    Chemistry-Organic Chemistry Some Basic Principles and Techniques-6537.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6538.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6539.png
Which one of the following is an intermediate in the reaction of benzene with CH3 Cl in the presence of anhydrous AlCl3?
  • Cl+
  • 2)
    Chemistry-Organic Chemistry Some Basic Principles and Techniques-6541.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6542.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6543.png
The ease of dehydrohalogenation of alkyl halides with alcoholic KOH is
  • 3° < 2° < 1°
  • 3° > 2° > 1°
  • 3° < 2° > 1°
  • 3° > 2° < 1°
The ease of nitration of the following three hydrocarbons follows the order
Chemistry-Organic Chemistry Some Basic Principles and Techniques-6545.png
  • II = III ≈ I
  • II > I > III
  • III > II > I
  • I = III > II
Consider the following compounds,
Chemistry-Organic Chemistry Some Basic Principles and Techniques-6546.png
  • II > III > I
  • III < I < II
  • I > II > III
  • I = II > III
Which of the following would react most readily with nucleophiles?

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6547.png
  • 2)
    Chemistry-Organic Chemistry Some Basic Principles and Techniques-6548.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6549.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6550.png

Chemistry-Organic Chemistry Some Basic Principles and Techniques-6552.png
  • (I) SN 2, (II) E1 mechanism
  • (I) SN 1, (II) E2 mechanism
  • (I)SN 1, (II) E1 mechanism
  • (I) SN 2, (II) E2 mechanism

Chemistry-Organic Chemistry Some Basic Principles and Techniques-6554.png
  • ortho/para-position at ring I
  • meta-position at ring I
  • ortho/para-position at ring II
  • meta-position at ring II

Chemistry-Organic Chemistry Some Basic Principles and Techniques-6556.png
  • electrophilic substitution of I order
  • electrophilic substitution of II order
  • nucleophilic substitution of I order
  • nucleophilic substitution of II order

Chemistry-Organic Chemistry Some Basic Principles and Techniques-6558.png
  • elimination reaction
  • free radical substitution
  • nucleophilic substitution
  • electrophilic substitution

Chemistry-Organic Chemistry Some Basic Principles and Techniques-6560.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6561.png
  • 2)
    Chemistry-Organic Chemistry Some Basic Principles and Techniques-6562.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6563.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6564.png
Which of the following will be easily nitrated ?

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6566.png
  • 2)
    Chemistry-Organic Chemistry Some Basic Principles and Techniques-6567.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6568.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6569.png
Which of the following is least reactive towards nucleophilic substitution reaction?
  • (CH3)3 C — Cl
  • CH2 = CHCl
  • CH3CH2Cl
  • CH2 = CHCH2Cl

Chemistry-Organic Chemistry Some Basic Principles and Techniques-6571.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6572.png
  • 2)
    Chemistry-Organic Chemistry Some Basic Principles and Techniques-6573.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6574.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6575.png
Which of the following is arranged according to the nature indicated ?

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6577.png
  • 2)
    Chemistry-Organic Chemistry Some Basic Principles and Techniques-6578.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6579.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6580.png

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  • nucleophilic addition
  • nucleophilic substitution
  • electrophilic addition
  • elemination
The decreasing order of nucleophilicity among the following nucleophiles is
Chemistry-Organic Chemistry Some Basic Principles and Techniques-6584.png
  • III, II, I, IV
  • II, III, I, IV
  • IV, III, II, I
  • I, II, III, IV
The reaction,
Chemistry-Organic Chemistry Some Basic Principles and Techniques-6585.png
  • OCOR
  • OC2H5
  • NH2
  • Cl
In the nucleophilic substitution reactions (SN 2 or SN 1), the reactivity of alkyl halides follows the sequence
  • R - I > R - Br > R - Cl > R - F
  • R - Cl > R - F > R - Br > R - I
  • R - F > R - Cl > R - Br > R - I
  • R - I > R - F > R - Cl > R - Br
Which of the following is most reactive towards nucleophilic substitution reaction ?
  • CH2=CH-Cl
  • C6H5Cl
  • C6H5CH2Cl
  • ClCH2-CH = CH2
The IUPAC name of the following compound is
Chemistry-Organic Chemistry Some Basic Principles and Techniques-6588.png
  • 2-(Ethoxycarbonyl) benzoyl chloride
  • Ethyl2-(chloroformyl) benzoate
  • Ethyl-2-(chloromethanoyl)benzoate
  • Ethyl 2-(chlorocarbonyl)benzoate
Nucleophilicity order is correctly represented by

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6591.png
  • 2)
    Chemistry-Organic Chemistry Some Basic Principles and Techniques-6592.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6593.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6594.png

Chemistry-Organic Chemistry Some Basic Principles and Techniques-6595.png
  • elimination reaction
  • substitution reaction
  • free radical reaction
  • addition reaction

Chemistry-Organic Chemistry Some Basic Principles and Techniques-6596.png
  • IV, III, II, I
  • I, II, III, IV
  • IV, II, III, I
  • I, III, II, IV
Which of the following is the strongest nucleophile ?

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6598.png
  • 2)
    Chemistry-Organic Chemistry Some Basic Principles and Techniques-6599.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6600.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6601.png
The most stable carbocation is

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6602.png
  • 2)
    Chemistry-Organic Chemistry Some Basic Principles and Techniques-6603.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6604.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6605.png
An organic molecule necessarily shows optical activity if it
  • contains asymmetric carbon atoms
  • is non-polar
  • is non - superimposable on its mirror image
  • is superimposable on its mirror image
The most stable conformation of n-butane is
  • skew-boat
  • Eclipsed
  • Gauche
  • Staggered-antill
Which of the following compounds exhibits stereoisomerism?
  • 2-Methylbutene-1
  • 3-Methylbutyne-1
  • 3-Methylbutanoic acid
  • 2-Methylbutanoic acid
The total number of acyclic isomers including the stereoisomers (geometrical and optical) with the molecular formula C4H7Cl is
  • 12
  • 11
  • 10
  • 9
The number of stereoisomers and optical isomers possible for the compound, abdC—Cabd are respectively.
  • 3, 3
  • 3, 2
  • 2, 3
  • 2, 2
Which of the following molecules will not show optical activity?

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6608.png
  • 2)
    Chemistry-Organic Chemistry Some Basic Principles and Techniques-6609.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6610.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6611.png
Erythro isomer among the following is

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6613.png
  • 2)
    Chemistry-Organic Chemistry Some Basic Principles and Techniques-6614.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6615.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6616.png
Find the incorrect formula

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6617.png
  • 2)
    Chemistry-Organic Chemistry Some Basic Principles and Techniques-6618.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6619.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6620.png
Statement (A) : Sulphur present in organic compound can be estimated quantitatively by Carius method.
Reason (R) : Sulphur is separated easily from other atoms in the molecules and gets precipitated as light yellow solid.
  • If both A and R are true, and reason is the true explanation of the assertion.
  • If both A and R are true, but R is not the true explanation of the A.
  • If A is true but R is false.
  • If both A and R are false.
0:0:1


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