Identify the compound C in the following sequence :
(CH3)2CHCH2C≡N→HCl, H2Ocompound A →2. H2O1. LiAlH4compound B →CH2Cl2PCCcompound C
(a) O ||(CH3)2CHCCH3
(b) O ||(CH3)2CHCH2COH
(c) O ||(CH3)2CHCH2CH
(d) O ||(CH3)2CHC CH2OH
What is compound Z?
CH3CH2CH2Br→NaCNX→heatH3O+Y→H+CH3CH2OHZ
(a) O ||CH3CH-CHCOH
(b) CH3CH2CH2CH=NOCH2CH3
(c) CH3CH2CH2CH(OCH2CH3)2
(d) O || CH3CH2COCH2CH3
Identify (A).
(a) (b) (c) (d)
→(i)H+(i)KBrO,∆ (X)→ (Y)∆
Hence the product (Y) in the above sequence of reactions, is :
The action of bromine water (excess) on salicylic acid results in the formation of:-
An organic compound having the molecular formula C8H10O on being heated with I2 and dilute NaOH gives a yellow precipitate. The expected compound is:
() C6H5CH2CH2OH
()
The Birch reduction of benzoic acid gives:-(a) (b) (c) (d)
ph-CHO + 2 →H2SO4 major product of this reaction is:
() ph3CH
() OH |Ph-C-Ph | Ph
() ph2CH2
→(2) H3O⊕(1) KMnO4, HO-, ∆
The labelled carbon goes with:
1. Ph-C14O2H 2. C14O2 3. Ph-C14H2-CO2H 4. C14H4
Which of the following acid gives positive Tollen's reagent test.
(CH2)2<CO2HCO2H
CH2<CO2HCO2H
C|O2HCO2H
HCO2H
Acetaldehyde and benzaldehyde can be differentiated by:
1. Fehling test
4. Both and (2)
2. Iodoform test
3. Tollen's reagent
PCl5 reacts with propanone, to give:
gem dichloride
vic dichloride
propanal
propane chloride
When vapours of acetic acid are passed over.....at 300°C we get acetone.
Al2O3
CuO
MoO
Cu
Formaldehyde is not used in:
adhesives
bakelite
tooth powders
explosives
Ketones can be prepared by:
Rosenmund's reduction
Stephen's reduction
both (1) and (2)
none of the above
Cyclohexanone is subjected to reduction by NaBH4. The product formed is:
cyclohexane
cyclohexanal
cyclohexadiene
Cyclohexanol
Schiff's reagent is:
magenta solution decolourised with sulphurous acid
magenta solution decolourised with chlorine
ammoinacal cobalt chloride solution
ammoinacal manganese sulphate solution
Which of the following reaction is a condensation reaction?
HCHO→Para-formaldehyde
CH3CHO→Paraldehyde
CH3COCH3→Mesityl oxide
CH2=CH2→Polyethylene
Which of the following is correct for carbonyl compounds?
Compound having molecular formula C3H6O may be:
cyclic ether
carbonyl compound
unsaturatd ether or unsaturatd alcohol
all of the above
Which of the following would undergo aldol condensation?
CCl3CHO
CH3 |CH3—C—CHO | CH3
CH3CH2CHO
HCHO
Dry distillation of barium salt of Hexane-1,2-dicarboxylic acid gives :
Paraldehyde is:
a trimer of formaldehyde
a trimer of acetaldehyde
a hexamer of formaldehyde
a hexamer of acetaldehyde
Paraldehyde is used as a:
saporific
poison
polymer
dye
A typical compound undergoes Cannizzaro's reaction and aldol condensation. It is:
(CH3)2CHCHO
C6H5CHO
CH3CHO
Formaldehyde when treated with KOH gives methanol and potassium formate. The reaction is known as:
Perkin's reaction
Claisen's reaction
Cannizzaro's reaction
Knoevenagel's reaction
In the reaction, P is:
CH3COCHO
CH3COOCH3
CH3COCH2OH
none of these
Acetaldehyde reacts with PCl5, to give:
ethyl chloride
ethylene chloride
ethylidene dichloride
trichloroacetaldehyde
The reaction is an example of:
Wolf rearrangement
Favorskii rearrangement
Steven's rearrangement
Wagner-Meerwin rearrangement
Stephen's reaction is reduction of:
alkyl cyanide with LiAlH4
alkyl cyanide with SnCl2 and HCl
alkyl isocyanide with Na and alcohol
acyl halide in the presence of Pd/BaSO4
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