Eamcet - Chemistry - Organic Chemistry Question And Answers

The IUPAC name of an unsymmetrical ether with the molecular formula C4H10O:

A.  ethoxy propane

B.  methoxy ethane

C.  ethoxy ethane

D.  methoxy propane

View Answer  

Which one of the following is a secondary alcohol ?

A.  2-methyl-1- propanol

B.  2-methyl-2-propanol

C.  2-butanol

D.  1-butanol

View Answer  

The correct structure of 4-bromo 3-methyl-but-1-ene:

A.  Br - CH = C(CH3)2

B.  CH2 = CH - CH(CH3) - CH2Br

C.  CH2 = C(CH3)CH2CH2Br

D.  CH3 - C(CH3) = CHCH2 -Br

View Answer  

Average C-H bond energy is 416 kJ. mol-1. Which of the following is correct ?

A.  CH4(g) + 416kJ→C(g) + 4H(g)

B.  CH4(g) →C(g) + 4H(g) + 416kJ

C.  CH4(g) +1664kJ→C(g) + 4H(g)

D.  CH4(g) →C(g) + 4H(g) + 1664kJ

View Answer  

What is the molecular formula of the product formed when benzene is reacted with ethyl chloride in presence of anhydrous aluminum chloride ?

A.  C8H10

B.  C6H6

C.  C8H8

D.  C6H5Cl  

View Answer  

Assertion (A) : At 300 K,kinetic energy of 16 g of methane is equal to the kinetic energy of 32 g of oxygen. Reason (R) : At constant temperature,kinetic energy of one mole of all gases is equal. The correct answer is:

A.  Both (A) and (R) are true and (R) is the correct explanation of (A)

B.  Both (A) and (R) are true and (R) is the not correct explanation of (A)

C.  (A) is true but (R) is not true

D.  (A) is not true but (R) is true

View Answer  

The chemicals and the reaction conditions required for the preparation of ethane are

A.  C2H5I, Zn-Cu, C2H5OH

B.  CH3Cl, Na, H2O

C.  KOOC - CH = CH - COOK, electrolysis

D.  CH3CO2Na, NaOH, CaO, ∆

View Answer  

Which of the following is an endothermic reaction ?

A.  N2(g)  + 3H2(g) - 92kJ -----> 2NH3(g)

B.  N2(g)  + O2(g) + 180.8 kJ -----> 2NO(g)

C.  H2(g)  + Cl2(g)  -----> 2HCl(g) + 184.6 kJ

D.  C (graphite) + 2H2(g) -----> CH2(g) + 74.8 kJ

View Answer  

 Which of the following is a pair of functional isomers

A.  CH3COCH3, CH3CHO

B.  C2H5CO2H, CH3CO2CH3

C.  C2H5CO2H, CHCO2C2H5

D.  CH3CO2H, CH3CHO

View Answer  

The compound prepared by a substitution reaction of benzene is

A.  acetophenone

B.  glyoxal

C.  cyclohexane

D.  hexabromo cyclohexane

View Answer  

The functional groups present in 'salol' are

A.  —NH2 and —OR

B.  OH and —COR

C.  —NH2 and —COOH

D.  —OH and     —COOR

View Answer  

The decreasing order of bond dissociation  energies of   C-C , C-H and H-H i bond is

A.  H-H > C-H > C-C

B.  C-C > C-H > H-H

C.  C-H > C-C > H-H

D.  C-C > H-H > C-H

View Answer  

The   IUPAC    name    of   the    compound(CH3)2CH-CH=CH-CHOH-CH3 is

A.  5-methyl-hex-3-en-2-ol

B.  2-methyl-hex-3-en-5-o

C.  2-hydroxy-5-methy!-3-hexene

D.  5-hydroxy-2-mcthy!-3-hexene

View Answer  

Nitro benzene on reduction with zinc and NH4CI gives

A.  azobenzene

B.  aniline

C.  hydrazobenzene

D.  N-Phenyl hydroxylamine

View Answer  

Aqueous solution of an organic compound, 'A' on electrolysis liberates acetylene and CO2 at anode. 'A' is

A.  potassium acetate

B.  potassium succinate

C.  potassium citrate

D.  potassium maleate

View Answer  

Bhopal gas tragedy of 1984 was caused by

A.  carbon monoxide

B.  phosgene

C.  methyl cyanate

D.  methyl isocyanate

View Answer  

Which of the following is not correct

A.  Milk is a naturally occurring emulsion

B.  Gold sol is a lyophilic sol

C.  Physical adsorption decreases with rise in temperature

D.  Chemical adsorption is unilayered

View Answer  

Which of the following reactions can produce aniline as main product

A.  C6H5NO2 + Zn / KOH

B.  C6H5NO2 + Zn / NH4CL

C.  C6H5NO2 + LiAlH4

D.  C6H5NO2 + Zn / HCl

View Answer  

Which of the following reacts with benzene in presence of anhydrous aluminum chloride and forms acetophenone ?

A.  CH3CI

B.  CH3COOH

C.  CH3CHO

D.  CH3COCl

View Answer  

One mole of alkene X on ozonolysis gave one mole of acetaldehyde and one mole of acetone. The IUPAC name of X is

A.  2-Methyl-2-butene

B.  2-Methyl-1-butene

C.  2-butene

D.  1-butene

View Answer  

Among the following compounds which have more than one type of hybridization for carbon atom 1) CH3CH2CH2CH3 2) CH3CH= CHCH3 3) CH2= CH-CH=CH2 4) H-C=C-H

A.  2 and 3

B.  2

C.  3 and 4

D.  3

View Answer  

Which of the following reacts with ammoniacal cuprous chloride

A.  CH4

B.  C2H2

C.  C2H6

D.  C6H6

View Answer  

In aqueous solutions H2O2 oxidises H2S to

A.  Sulphur

B.  Sulphuric acid

C.  Caro's acid

D.  Marshall's acid

View Answer  

Ethylene reacted with bromine in CCl4 to form X. When X is reacted with alcoholic KOH, Y is formed. X and Y are respectively :

A.  BrCH2—CH2Br and C2H2

B.  C2H5Br and C2H4

C.  C2H5Br and C6H6

D.  C2H5Br3 and C2H4

View Answer  

Which of the following statements is NOT correct?

A.  The six carbons in benzene are sp2 hybridized

B.  Benzene has (4n+2)π electrons

C.  Benzene undergoes substitution reactions

D.  Benzene has two carbon-carbon bond lengths 1.540A and 1.340A

View Answer  

Which one of the following is used in the preparation of styrene?

A.  CH3CHO

B.  P2O5

C.  CH4

D.  C6H6

View Answer  

Alcohol manufactured from water gas is

A.  Ethanol

B.  Butanol

C.  Methanol

D.  Isobutanol

View Answer  

Aniline when heated with NaNO2 and HCl at 0.50C the product formed is:

A.  chloro aniline

B.  benzene diazonium chloride

C.  chloro benzene

D.  dichloro benzene

View Answer  

An isomer of ethanol is

A.  Methanol

B.  Diethyl ether

C.  Acetone

D.  Dimethyl ether

View Answer  

The number of π bonds in the product formed by passing acetylene through dil.H2SO4 containing mercuric sulphate is:

A.  zero

B.  one

C.  two

D.  three

View Answer