JEE Questions for Chemistry Organic Chemistry Some Basic Principles And Techniques Quiz 11 - MCQExams.com

The basic principle of Lassaigne test is
  • to convert elements present in compound from covalent form to ionic form
  • to convert elements present in compound from ionic form to covalent form
  • to convert elements present in compound into their complexes
  • None of the above
The prussian blue colour obtained in Lassaigne test is due to
  • Na4 [Fe(CN)6]
  • Fe4[Fe(CN)6]
  • CuSO4
  • FeSO4
In a Lassaigne test of Sluphur containing compound the violet colour is due to the

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6300.png
  • 2)
    Chemistry-Organic Chemistry Some Basic Principles and Techniques-6301.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6302.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6303.png
In Kjeldahl’s method for the estimation of nitrogen, the formula used is

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6304.png
  • 2)
    Chemistry-Organic Chemistry Some Basic Principles and Techniques-6305.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6306.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6307.png
An organic compound on analysis give the following result : C = 54.5%, O = 36.4%, H = 9.1%. The empirical formula of the compound is
  • CH3O
  • C2H4O
  • C3H4O
  • C4H8O
64 gm of organic compound contains 24 gm C, 8 gm H and the rest oxygen. What is the empirical formula of the compound ?
  • CH2O
  • CH4O
  • C2H4O
  • C2H8O2
On complete combustion, 0.246 g organic substance gave 0.198 g CO2 and 0.1014 g H2O. Find % of C and H in compound ?
  • 4.58, 21.95
  • 21.95, 4.58
  • 19, 21
  • 21, 19
Kjeldahl’s method cannot be applied to

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6308.png
  • 2)
    Chemistry-Organic Chemistry Some Basic Principles and Techniques-6309.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6310.png
  • None of these
Kjeldahl’s method, can be applied to
  • CH3CH2NH2
  • CH3CH2NO2

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6311.png
  • None of these
During estimation of nitrogen present in organic compound by Kjeldahl’s method, the ammonia evolved from 0.5 gm of the compound neutralised 10 ml of 1 M H2SO4 Calculate the %N in the compound.
  • 65
  • 28
  • 56
  • 30
In estimation of phosphorous present in organic compound, the amount of phosphorous is determined in terms of
  • Phosphoric acid
  • Ammonium molybdate
  • Ammonium phospho molybdate
  • Magnesium pyrophosphate
The fragrance of flower is due to the presence of some steam volatile organic compounds called essential oils. These are generally insoluble in water at room temperature but are miscible with water vapour. A suitable method for the extraction of these oils from the flower is,
  • Distillation
  • Crystallisation
  • Distillation under reduced pressure
  • Steam distillation
What is the formula of iron (III) hexacyanoferrate (II) ?

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6313.png
  • 2)
    Chemistry-Organic Chemistry Some Basic Principles and Techniques-6314.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6315.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6316.png
The ammonia evolved from the treatment of 0.3 gm of organic compound for estimation of nitrogen was passed in 100 ml of 0.1 m H2SO4 . The excess acid required 20 ml 0.5 M NaOH for complete neutralisation The organic compound is...
  • acetamide
  • benzamide
  • urea
  • thiourea
While detecting phosphorous in organic compound yellow colour is obtained due to the formation of
  • (NH4)2MoO4
  • (NH4)3PO4
  • (NH4)3PO4 . 12MoO3
  • MgNH4PO4
0.3557gm of the Platinum salt of monoacidic organic base yeilds 0.117gm of platinum. Find molecular weight of base
  • 95
  • 91.45
  • 98
  • 410
Which of the following reagents is used for detection of unsaturation in alkenes.
  • NaOH + CaO
  • cold dil, alkaline kMnO4
  • Cl2/hv
  • KOH / EtOH
Which of the following compounds will show metamerism?
  • CH3—CO—C2H5
  • C2H5—S—C2H5
  • CH3—O—CH3
  • CH3—O—C2H5
An organic compound having molecular mass 60 is found to contain C = 20%, H = 6.67% and N = 46.67% while rest is oxygen. On heating it gives NH3 along with a solid residue. The solid residue give violet colour with alkaline CuSO4, the compound is
  • CH3NCO
  • CH3CONH2
  • (NH2)2CO
  • CH3CH2CONH2
Statement (A): Lassaigne’s extract is boiled with dil.HNO3 before testing for halogens by AgNO3
Reason (R) : CN- and S2- present in Lassaigne extract interfere with the test of halide ions by silver nitrate.
  • 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 isfalse.
  • If both A and R are false.
Statement (A) : Essential oils are purified by steam distillation.
Reason (R) : Essential oils are volatile and are insoluble in water.
  • 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.
IUPAC name of
Chemistry-Organic Chemistry Some Basic Principles and Techniques-6319.png
  • 4–bromo–3–ethyl–1, 4–pentadiene
  • 2–bromo–3–ethyl–1, 4–pentadiene
  • 2–bromo–3–ethyl–1, 5–pentadiene
  • None of the above
IUPAC name of the following compound is
Chemistry-Organic Chemistry Some Basic Principles and Techniques-6321.png
  • 4–isopropyl–6–methyloctane
  • 3–methyl–5–(1–methyl ethyl)octane
  • 3–methyl–5–isopropyloctane
  • 6–methyl–4–(1–methylethyl) octane

Chemistry-Organic Chemistry Some Basic Principles and Techniques-6323.png
  • bicyclo (2, 1,pentane
  • 1, 2–cyclopropyl-cyclobutane
  • 1, 2–methylene cyclobutane
  • cyclopentane–(4, 3)–annulene
Which one of the following is s-butyl phenyl vinyl methane?

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6325.png
  • 2)
    Chemistry-Organic Chemistry Some Basic Principles and Techniques-6326.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6327.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6328.png

Chemistry-Organic Chemistry Some Basic Principles and Techniques-6330.png
  • 4-hydroxy- 1 -methylpentanal
  • 4-hydroxy-2-methylpent-2-en-l-al
  • 2-hydroxy-4-methylpent-3-en-5-al
  • 2-hydroxy-3-methylpent-2-en-5-al
Correct structural formula of compound 5-nitro- 3-methoxy-3-methylhexanoyl chloride is

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6332.png
  • 2)
    Chemistry-Organic Chemistry Some Basic Principles and Techniques-6333.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6334.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6335.png

Chemistry-Organic Chemistry Some Basic Principles and Techniques-6337.png
  • 2-methyl-3-bromohexanal
  • 3-bromo-2-methylbutanal
  • 2-bromo-3-bromobutanal
  • 3-bromo-2-methylpentanal
Which of the following is phenyl ethanoate?

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6339.png
  • 2)
    Chemistry-Organic Chemistry Some Basic Principles and Techniques-6340.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6341.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6342.png
Which of the following represents neo-pentyl alcohol?
  • CH3 CH(CH3)CH2 CH2 OH
  • 2)
    Chemistry-Organic Chemistry Some Basic Principles and Techniques-6344.png
  • CH3 (CH2)CH3 OH
  • CH3 CH2 CH(OH)C2H5
What is the formula of tertiary butyl alcohol?
  • CH3 — CH(CH— CH2 — OH
  • CH3 — (CH2)2 OH
  • CH3 — CH(OH) — CH2 — CH3
  • (CH3)3 . C — OH
Give the correct IUPAC name for
Chemistry-Organic Chemistry Some Basic Principles and Techniques-6347.png
  • 2–ethoxy–5–chloropentane
  • 1–chloro–4–ethoxy–4–methylbutane
  • 1–chloro–4–ethoxypentane
  • Ethyl–1–chloropentylether
In cyclopropane, cyclobutane and cyclohexane, the common group is

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6349.png
  • 2)
    Chemistry-Organic Chemistry Some Basic Principles and Techniques-6350.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6351.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6352.png

Chemistry-Organic Chemistry Some Basic Principles and Techniques-6354.png
  • 5-chloro-hex-2-ene
  • 2-chloro-hex-5-ene
  • 1-chloro-l-methylpent-3-ene
  • 5-chloro-5-methylpent-2-ene
IUPAC name of
Chemistry-Organic Chemistry Some Basic Principles and Techniques-6356.png
  • 3-chlorobutanol
  • 3-chlorobutanaldehyde
  • 3-chlorobutanal
  • 2-chlorobutanol
What is the correct IUPAC name of
Chemistry-Organic Chemistry Some Basic Principles and Techniques-6358.png
  • 4-methoxy-2-nitrobenzaldehyde
  • 4-formyl-3-nitro anisole
  • 4-methoxy-6-nitrobenzaldehyde
  • 2-formyl-5-methoxy nitrobenzene
IUPAC name of the following compounds is
Chemistry-Organic Chemistry Some Basic Principles and Techniques-6360.png
  • ethyl-4-oxoheptanoate
  • methyl-4-oxoheptanoate
  • ethyl-4-oxohexanoate
  • methyl 4-oxohexanoate
IUPAC name of the compound
Chemistry-Organic Chemistry Some Basic Principles and Techniques-6362.png
  • 5-methyl-4-isopropyl-6, 6'-diethyloctane
  • 3, 3-dimethyl-3-ethyl-5-isopropyloctane
  • 3, 3-diethyl-4-methyl-5-(1, 1-dimethyl) octane
  • 3, 3-diethyl-4-methyl-5-(1'-methyl ethyl) octane

Chemistry-Organic Chemistry Some Basic Principles and Techniques-6364.png
  • 2-chloro-4-methyl-2-pentene
  • 4-chloro-2-methyl-3-pentene
  • 4-methyl-2-chloro-2-pentene
  • 2-chloro-4, 4-dimethyl-2-butene
The IUPAC name of the following compound is
Chemistry-Organic Chemistry Some Basic Principles and Techniques-6366.png
  • 2(carboxymethyl)-pentane-1, 5-dioic acid
  • 3-carboxyhexane-1, 6-dioic acid
  • butane-1, 2, 4-tricarboxylic acid
  • 4-carboxyhexane-1, 6-dioic acid
  • 1, 2-dicarboxy pentanoic acid
The systematic (IUPAC) name of the compound with the following structural formula will be
Chemistry-Organic Chemistry Some Basic Principles and Techniques-6368.png
  • 1-ethyl-2-methyl cyclohexene
  • 2-methyl-1-ethyl cyclohexene
  • 3-ethyl-2-methyl cyclohexene
  • 4-ethyl-3-methyl cyclohexene
Which of the following compounds has incorrect IUPAC nomenclature?

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6370.png
  • 2)
    Chemistry-Organic Chemistry Some Basic Principles and Techniques-6371.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6372.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6373.png
The total number of contributing structures showing hyperconjugation (involving C—H bonds) for the following carbocation is
Chemistry-Organic Chemistry Some Basic Principles and Techniques-6375.png
  • three
  • five
  • eight
  • six
Amongst the following, the total number of compounds soluble in aqueous NaOH is
Chemistry-Organic Chemistry Some Basic Principles and Techniques-6377.png
  • 1
  • 2
  • 3
  • 4

Chemistry-Organic Chemistry Some Basic Principles and Techniques-6379.png
  • A > B > C
  • B > A > C
  • B > C > A
  • C > B > A
The correct stability order for the following species as
Chemistry-Organic Chemistry Some Basic Principles and Techniques-6381.png
  • II > IV > I > III
  • I > II > III > IV
  • II > I > IV > III
  • I > III > II > IV
The electrophile EE9 attacks which benzene ring to generate the intermediate a-complex. Which of the following a-complexes is of lowest energy?

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6382.png
  • 2)
    Chemistry-Organic Chemistry Some Basic Principles and Techniques-6383.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6384.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6385.png

Chemistry-Organic Chemistry Some Basic Principles and Techniques-6386.png
  • CH3 —
  • CH3 — CH2—

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6387.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6388.png
CH3CH2Cl undergoes homolytic fission, produces

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6390.png
  • 2)
    Chemistry-Organic Chemistry Some Basic Principles and Techniques-6391.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6392.png

  • Chemistry-Organic Chemistry Some Basic Principles and Techniques-6393.png
Select R-isomers from the following
Chemistry-Organic Chemistry Some Basic Principles and Techniques-6469.png
  • I and III
  • II, IV and V
  • I, II and III
  • II and III
  • I, III and V
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