MCQs Set - VIII Compounds containing nitrogen

  Compounds containing Nitrogen
 

Compounds containing nitrogen

(1) Which one of the following reagents is required to  prepare methyl amine from acetamide:-

a.      PCl₅

b.     Sodalime

c.      NaOH + Br₂

d.     Hot. Conc H2SO4

(2) Which one of the following will give a primary amine on reduction:-

a.      CH₃CH₂NO₂

b.     C₆H₅-N=N-C₆H₅

c.      CH₃CH₂-O-N=O

d.     CH₃CH₂NC

(3) Which one of the following compounds will form isocyanides when subjected to carbylamines reaction:-

a.      N-Methylmethanamine

b.     Ethane nitrile

c.      Ethyl chloride

d.     Aniline

(4) Which one of the following will give a secondary amine on reduction:-

a.      Nitrobenzene

b.     Methyl cyanide

c.      Nitroethane

d.     Methyl isocyanide

(5) Which one of the following compounds can undergo Friedal Craft’s reaction:-

a.      Nitrobenzene

b.     Aniline

c.      Phenol

d.     Benzoic acid

(6) What is the product formed when Ethyl chloride is treated with alcoholic NaCN:-

a.      Ethane nitrile

b.     Propane nitrile

c.      Ethyl carbylamines

d.     Methyl cabylamine

(7) Alkyl cyanide on reduction yields.

a.    Primary amine

b.   Secondary amine

c.    Tertiary amine

d.   All of these

(8) The product obtained by heating ammonium sulphate and KCNO is.

a.    Ammonium cyanate

b.   Ammonia

c.    Hydrocyanic acid

d.   Urea

(9) When nitrobenzene is reduce with Zn dust and NH₄Cl we get:-

a.    Aniline

b.   Benzene

c.    Phenyl hydroxyl amine

d.   Azoxybenzene

(10) Amongst the following the most basic compound is:-

a.    Benzylamine

b.   Aniline

c.    Acetanilide

d.   P-Nitroaniline

(11) Butane nitrile may be prepared by heating.

a.    Propyl alcohol with KCN

b.   Butyl alcohol with KCN

c.    Butyl chloride with KCN

d.   Propyl chloride with KCN

(12) Which one of the following products are obtained on acidic hydrolysis of ethyl isocyanide:-

a.    CH₃CH₂NH₂ and H₂O

b.   CH₃NH2 and CH₃COOH

c.    CH₃CH₂NH₂ and HCOOH

d.   CH₃CONH₂ and H₂O

(13)   Which of the following reagents can be used to distinguish between aniline and ethyl amine:-

a.      Chloroform /alc.KOH

b.     Bromine water

c.      1% alkaline CuSO₄

d.     Ammonical AgNO₃

(14)     Which of the following tests can be used to distinguish between Ethylamine and Diethylamine:-

a.      Carbylamine test

b.     Tollen’s test

c.      Felhing’s test

d.     Biuret test

(15)     Which of the following pairs of compounds can be distinguished with Hinsberg reagent:-

a.      Aniline and ethyl amine

b.     Ethyl amine and diethyl amine

c.      Ethyl cyanide and ethyl isocyanide

d.     Nitro methane and Methane nitrile

(16)     Which of the following products in formed when aniline is subjected to acetylation:-

a.      Acetanilide

b.     Benzanilide

c.      Acetophenone

d.     Toluene

(17)     Which of the following reagents can be used to convert benzene diazonium chloride to benzene:-

a.      Cu/HCl

b.     CuCN

c.      H₃PO₂

d.     H₂SO₄

(18)     The reaction between a primary amine CHCl₃ and few drops of alcoholic KOH is known as.

a.    Cannizzaro’s reaction

b.   Wurt’z reaction

c.    Mendius reaction

d.   Carbyl amine reaction

(19)     Aniline is acetylated and the product on nitration followed by alkaline   hydrolysis gives:-

a.    o-nitroacetanilide

b.   p-nitroaniline

c.    m-nitroaniline

d.   acetanilide 

(20)     Which of the following is most basic:-

a.    Methyl amine

b.   Dimethyl amine

c.    Trimethyl amine

d.   Ammonia

MCQs Set VII - Isomerism

(1)   An isomer of ethanol is

(a)     Methanol

(b)     Acetone

(c)     Dimethyl ether

(d)     Diethyl ether

(2)   How many chain isomers can be    obtained from C₆H₁₄—

(a)     4                     

(b)     6

(c)     5                     

(d)     7

(3)   The compound C₄H₁₀O can show-

(a)     Metamerism

(b)     Functional isomerism

(c)     Position isomerism

(d)     All of the above

(4)   Compound that is not isomeric with Diethyl ether is –

(a)     2-Methoxy propane

(b)     Butanol

(c)     2-Methyl-2-propanol

(d)     Butanone

(5)   Compounds that can exhibit geometrical isomerism—

(a)     2-Butene

(b)     2-Butanol

(c)     2-Butyne

(d)     2-Methyl-1-propene

(6)   Optical isomerism is shown by-

(a)     Butanol       

(b)     Butene

(c)     Butanol        

(d)     Butene

(7)   Chiral molecules are those which are-

(a)     Superimposable mirror images

(b)     Non superimposable on their mirror image

(c)     Capable of forming isomers

(d)     Unstable molecules.

(8)   Minimum condition for a molecule to show optical isomerism is-

(a)     Presence of an asymmetric carbon atom

(b)     Dissymmetry in the molecule

(c)     Presence of plane of symmetry

(d)     Restricted rotation

(9)   Keto-enol tautomerism is observed in—

(a)     Benzaldehyde

(b)     Benzophenone

(c)     Acetophenone

(d)     Acetic acid

(10)  Which of the following can deflect plane of polarized light

(a)     2-Methylpropanoic acid

(b)     Butanoic acid

(c)     2- Methylbutanoic acid

(d)     Propanoic acid

(11)   Optical isomers, which are not mirror images of each other, are called

(a)     Enantiomers

(b)     Diastereoisomers

(c)     Epimers

(d)     Anomers

(12)    Functional isomers that exist in dynamic equilibrium are

(a)     Mesomers

(b)     Metamers

(c)     Tautomers

(d)     Conformers

(13)    The minimum number of carbon atoms an alkane should possess in order to show optical isomerism—

(a)     Six

(b)     Seven

(c)     Five

(d)     Four

(14)    Meso Tartaric acid is optically inactive due to:

(a)     Molecular asymmetry

(b)     Presence of two Chiral carbon atoms

(c)     External compensation

(d)     Internal Compensation

(15)      Isopentane can form four isomeric bromo derivatives. How many of them are optically active?

(a)     1

(b)     2

(c)     3

(d)     4

(16)      How many stereoisomers would be expected for compounds that could be written as CH₃CH(OH)CH(OH)CH(OH)CH₂OH

(a)     1

(b)     2

(c)     4

(d)     8

(17)      The number of isomers that could have the name bromopropane is

(a)     0

(b)     1

(c)     2

(d)     3

(18)     The most stable conformation for ethane is called

(a)     Anti

(b)     Gauche

(c)     Eclipsed

(d)     Staggered

(19)     Which statement about enantiomers is NOT true?

(a)     They have identical melting points

(b)     They have identical boiling points

(c)     The magnitude of their specific rotations is identical

(d)     They have identical densities

(20)      How many alkenes of molecular formula C₅H₁₀ exist that DO NOT show cis-trans isomerism?

(a)     1                     

(b)     3

(c)     2                     

(d)     more than 3