States of Matter – VI

1) The IUPAC name of HO – CH2CH2-O – CH2CH2 – OH is
a)
b) Bis (2-hydroxyethyl)ether
c) 3-Oxapentane-1,5-diol
d) Diethylene glycol

2) The IUPAC name of the compound is
a) Bicyclo[2,1,0]pentane
b) 1,2-Cyclopropylcyclobutane
c) 1,2-Cyclobutylcyclopropane
d) 1, 2-Methylenecyclobutane

3) The conversion of 2, 3-dibromobutane to 2- butene with Zn and alcohol is a
a) Redox reaction
b) alpha-elimination
c) beta -elimination
d) Both alpha-elimination and redox reaction.

4) The most important constituent of dynamite is
a) T.N.T.
b) Picric acid
c) Nitrobenzene
d) Nitroglycerine.

5) How many acids and esters are possible for the compound with molecular formula, C4H8O2?
a) Two acids + Two esters
b) Two acids + Four esters
c) Four acids + Two esters
d) Three acids + Three esters

6) m-Dinitrobenzene when heated with sodium hydroxide in presence of potassium ferricyanide mainly gives
a) m-Nitrophenol
b) Resorcinol
c) 2, 4-Dinitrophenol
d) 2, 6-Dinitrophenol

7)

The active mass of 68 gms of H2 S in a two litre flask is
a) 0.50
b) 2
c) 0.75
d) 1

8) The sign and magnitude of the Joule Thomson effect in a gas depends upon the
a) Temperature
b) Pressure
c) Temperature and Pressure
d) None of these

9) The temperature at which a gas becomes cooler on expansion is called the
a) Inversion temperature
b) Critical temperature
c) Boyle temperature
d) Transitional temperature

10) When two atoms of hydrogen combine to form a molecule of hydrogen gas, the energy of the molecule is
a) Higher than that of the separate atoms
b) Equal to that of the separate atoms
c) Lower than that of the separate atoms
d) Sometimes lower and sometimes higher

Ans 1) c

Ans Desc 1)

Ethers can also be named as oxa derivative of the alkane corresponding to the total numbers of carbon atoms and the ethereal oxygen atom. Thus,

3-Cyanomethylpentane-1, 5-dinitrile

Ans 2) a

Ans Desc 2)

Ans 3) c

Ans Desc 3) In the conversion of 2, 3-dibromobutane to 2-butene, the two Br atoms are lost from the adjacent carbon atoms and hence it is a ß-elimination reaction.

Ans 4) d

Ans Desc 4)

Ans 5) b

Ans Desc 5) Two acids : CH3CH2CH2COOH and (CH3)2CHCOOH.
Four esters : HCOOCH2CH2CH3 , HCOOCH(CH3)2, CH3COOC2H5 and H3CH2COOCH3.

Ans 6) c

Ans Desc 6) m-Dinitrobenzene on treatment with NaOH in presence of pot. ferricyanide undergoes nucleophilic substitution reaction at o, p-positions with respect to NO2 group to give 2, 4-dinitrophenol.    

Ans 7) d

Ans Desc 7)

Ans 8) c

Ans Desc 8)

Ans 9) a

Ans Desc 9)

Ans 10) c

Ans Desc 10)

Related Posts
Leave a reply
What is the capital of Egypt ?