Chloropicrin is used as an insecticide and has been used as tear war gas .The chloropicrin is :
CH2ClCCl3
CCl3NO2
CH2(CH3)CH2Cl
CHI3
B.
CCl3NO2
The chloropicrin is trichloro , nitro methane ,
i.e , CCl3NO2 .
A Anisole
Reagent in second step should be :
CH3Cl
KOH + C2H5OH
KOH + C2H5SH
KOH + Cl2
B.
KOH + C2H5OH
Identify the product Y in the sequence :
CH3CHO + CH3MgI X Y , is
CH3OH
CH3CH2OH
(CH3)2CHOH
(CH3)3COH
C.
(CH3)2CHOH
CH3CHO + CH3MgI (CH3)2CH-OMgI (X) (CH3)2CHOH (Y)
An ester linkage is present in :
nylon - 6
nylon - 6 , 6
dacron
rayon
C.
dacron
The ester linkage is present in dacron
(terylene or dacron)
Lecithin is an example of :
carbohydrate
hormones
vitamins
phospholipid
D.
phospholipid
Lecithin is an example of phospholipids .
Structure of lecithin is ;
Two moles of acetic acid are heated with P2O5 .The product formed is :
2 moles of ethyl alcohol
formic anhydride
acetic anhydride
2 moles of methyl cyanide
C.
acetic anhydride
Two moles of acetic acid (Ethanoic acid) are heated with P2O5 , product formed is acetic anhydride .P2O5 act as dehydrating agent .
Williamson's synthesis involves :
SN1 mechanism
nucleophilic addition
SN2 mechanism
SE mechanism
C.
SN2 mechanism
Williamson's synthesis : A reaction in which sodium or potasium alkoxide is heated with an alkyl halide to give ether by the reaction sample as well as mixed ethers can be prepared .This is an example of nucleophilic substitution and follows SN2 mechanism .
RONa + XR +
RONa + XR' + NaX
The reaction , ROH + H2CN2 in the presence of HBF4 , gives the following product :
ROCH3
RCH2OH
ROHCN2N2
RCH2CH3
A.
ROCH3
In the presence of tetrafluoroboric acid , alcohols react with diazomethane (CH2N2) to form methyl ethers in excellent yield .
+ + N2
Which of the following is common example of fibres ?
Bakelite
Buna - S
Nylon - 66
PVC
C.
Nylon - 66
Nylon - 66 also known as common fibres because it is used in the manufacturing carpets , textile fibres .