Chemistry - Organic Chemistry Based on Functional Group - I
Exam Duration: 45 Mins Total Questions : 30
Oxidation number of sulpher in S8 is
- (a)
0
- (b)
-2
- (c)
-4
- (d)
8
Correct order of the sizes of iodine species I, I- and I+ is
- (a)
I- > I > I+
- (b)
I > I- > I+
- (c)
I > I+ > I-
- (d)
I+ > I > I-
Which of the following is pseudo halide?
- (a)
CN-
- (b)
IF5
- (c)
ICI-
- (d)
I-3
Which of the following halogen is used as a strong bleaching agent and disinfectant?
- (a)
F2
- (b)
Cl2
- (c)
Br2
- (d)
I2
Main constitutions of producer gas are
- (a)
CO+H2
- (b)
CO+CO2 H4
- (c)
CO+N2
- (d)
CO+CO2
The catalyst used in the manufacture of sulphide acid by contact process is
- (a)
finley divided iron
- (b)
molebdenum
- (c)
nitrous oxide
- (d)
vanadium pentoxide
Which one of the following is not precipitated in cidic medium?
- (a)
ZnS
- (b)
CuS
- (c)
As2S3
- (d)
CdS
White phosphorus reacts with caustic soda. The products are PH3 and NaH2.PO2. In this reaction phosphorus undergoes
- (a)
oxidation
- (b)
reduction
- (c)
disproportionation
- (d)
neutralisation
Which one of the following is not obtaind from liquid air fractionation?
- (a)
Xenon
- (b)
Radon
- (c)
Krypton
- (d)
Neon
The noble gas used in filling ballons is
- (a)
Helium
- (b)
Neon
- (c)
Argon
- (d)
Krypton
The gas most difficult to be liquefied is
- (a)
Helium
- (b)
Neon
- (c)
Xenon
- (d)
Argon
Which one of the following forms an amphoteric oxide?
- (a)
Ca
- (b)
Cu
- (c)
Zn
- (d)
Fe
In which of the following strongest hydrogen bond exists?
- (a)
Water
- (b)
Ammonia
- (c)
HF
- (d)
HI
Which one of the following is not a fertilizer?
- (a)
Calcium cyanamide
- (b)
Basic calcium nitrate
- (c)
Urea
- (d)
Calcium carbide
Cl2 is an anhydride of
- (a)
HClO4
- (b)
HOCl
- (c)
HClO2
- (d)
ClO3
Purest form of silica is
- (a)
quartz
- (b)
sandstone
- (c)
flint
- (d)
None of this above
Which one of the following is not an orthosilicate?
- (a)
phenavite
- (b)
willwmite
- (c)
thortveitte
- (d)
forsterite
There is no S-S bond in
- (a)
S2O42-
- (b)
S2O52-
- (c)
S2O32-
- (d)
S2O72-
Which has the highest calorific value?
- (a)
Natural gas
- (b)
Producer gas
- (c)
Water gas
- (d)
Coal gas
The color of the blue glass is due to the prersence of
- (a)
Cr
- (b)
Co
- (c)
Ni
- (d)
Fe
Which is the correct increasing order of boiling points of the following compounds?
1-bromoethane, 1-bromopropane,1-bromobutane, bromobenzene
- (a)
<1-bromobenzene<1-bromobutane<1-bromopropane<1-bromoethane
- (b)
Bromobenzene<1-bromoethane<1-bromopropane<1-bromobutane
- (c)
1-bromopropane<1-bromobutane<1-bromoethane
- (d)
1-bromoethane<1-bromopropane<1-bromobutane
Which alkyl halide from the following pairs would you expect to react more rapidly by SN2 mechanism?
- (a)
\({ CH }_{ 3 }\underset { \overset { | }{ { CH }_{ 3 } } }{ CH } { CH }_{ 2 }{ CH }_{ 2 }Br\)
- (b)
\({ CH }_{ 3 }{ CH }_{ 2 }\underset { \overset { | }{ { CH }_{ 3 } } }{ CH } { CH }_{ 2 }Br\)
- (c)
\({ CH }_{ 3 }{ CH }_{ 2 }\overset { \underset { | }{ { CH }_{ 3 } } }{ \underset { \overset { | }{ { CH }_{ 3 } } }{ C } } { CH }_{ 2 }Br\)
- (d)
\({ CH }_{ 3 }{ CH }_{ 2 }{ CH }_{ 2 }\underset { \overset { | }{ { CH }_{ 3 } } }{ CH } Br\)
The reaction of 1-chlorobutane with alcoholic KOH gives
- (a)
but-1-ene
- (b)
but-2-ene
- (c)
but-2-ol
- (d)
butanol
The reaction of C6H5CH2Br with aqueous sodium hydroxide follows
- (a)
SN1 mechanism
- (b)
SN2 mechanism
- (c)
any of the above depending upon the temperature of reaction
- (d)
Saytzeff's rule
Consider the reaction,\({ CH }_{ 3 }Br+{ Nu }^{ - }\longrightarrow { CH }_{ 3 }-Nu+{ Br }^{ - }\) The decreasing order of the rate of the above reaction with Nu- A, B, C and D is
(A) PhO-
(B) ACO-
(C) HO-
(D) CH3O-
- (a)
D>C>A>B
- (b)
D>C>B>A
- (c)
A>B>C>D
- (d)
B>D>C>A
The product of the reaction of ethyl iodide with Zn - Cu couple/alcohol can also be prepared by the following reaction
- (a)
by the hydrolysis of the product obtained from the reaction of ethyl iodide with Mg in dry ether
- (b)
reaction of iodomethane with Na in dry ether
- (c)
by the reduction of ethyl alcohol with red P + HI
- (d)
All of the above
Ethylene chloride and ethylidene chloride are positional isomers. Which of the following statement is not applicable on both?
- (a)
Both are dihalogen derivatives
- (b)
Both form the same product with aqueous potash
- (c)
Both form the same product with alcoholic potash
- (d)
Both give Beilsteine's test
Of the five isomeric hexane, the isomer which can give two monochlorinated compounds, is
- (a)
2-methylpentane
- (b)
2,2-dimethylbutane
- (c)
2,3-dimethylbutane
- (d)
n-hexane