The following reactions is an example of ..... reaction. C2H4Br2→C2H2
A. addition
B. dehydrobromination
C. substitution
D. dedromination
Identify 'acetaldoxime'
A. CH3 CH==N--NH2
B. CH3 CH==N--OH
C. (CH3)2C==N--OH
D. CH2 ==N--OH
Which one of the following functional groups undergoes hydrolysis with alkali to yield an acid group
A. −CN
B. −CHO
C. −COCH3
D. −Br
Which one of the following compounds forms a quaternary salt on reacting with excess methyl iodide ?
A. C2H5OCH3
B. (CH3)2CHOC2H5
C. C6H5NH2
D. C6H5NO2
Which of the following reagents can form a hydrazone with alkanone
A. NH3OHCl
B. PhNHNH2
C. NH2NHCONH2
D. HCN
The metal used for the de-bromination reaction of 1, 2 dibromoethane
A. Na
B. Zn
C. Mg
D. Li
3-hydroxybutanal is formed when (X) reacts with (Y) in dilute (Z) solution. Whatare X, Y and Z
A. CH3CHO, (CH3)2CO, NaOH
B. CH3CHO, CH3CHO, NaCI
C. (CH3)2CO, (CH3)2CO, HCl
D. CH3CHO, CH3CHO, NaOH
Which of the following, compounds is the reactant in Rosenmund's reduction
A. CH3CO2H
B. CH3CHO
C. CH3CH2Cl
D. CH3COCl
In which of the following reactions the product is an ether
A. C6H6 + CH3COCl/anhydrous AIC13
B. C2H5C1 + aq. KOH
C. C6H6 + C6H5COCl/anhydrous AICI3
D. C2H5C1 + C2H5ONa
Which of the following compounds is soluble in benzene but almost insoluble in water
A. C2H5OH
B. CH3CO2H
C. CH3CHO
D. C6H5NO2
When aniline is treated with CHCI3 and KOH, the product is :
A. Benzene diazonium chloride
B. Benzanilide
C. a Schiff's base
D. phenyl isocyanide
When ethyl alcohol reacts with bromine in the presence of alkali the compound formed
A. C2H6
B. C2HsBr
C. CH3Br
D. CHBr3
CH3COOH ----LiAlH4---> AA + CH3COOH ---H3O+ -----> B + H2OIn the above reactions 'A' and 'B' respectively are
A. CH3COOC2H5 ,C2H5OH
B. CH3CHO , C2H5OH
C. C2H5OH , CH3CHO
D. C2H5OH , CH3COOC2H5
An organic compound X on treatment with pyridinium chloro chromate in dichloromethane gives compound 'Y". Compound Y reacts with I2 and alkali to form triiodomethane. The compound 'X' is
A. C2H5OH
B. CH3CHO
C. CH3COCH3
D. CH3COOH
Which of the following reagents when heated with ethyl chloride, forms ethylene ?
A. Aqueous KOH
B. Zn/HCl
C. Alcoholic KOH
D. HI
Which of the following is added to chloroform to slow down its aerial oxidation in presence of light ?
A. Carbonyl chloride
B. Ethyl alcohol
C. Sodium hydroxide
D. Nitric acid
when acetaldehyde is heated with Fehling solution, a red precipitate is formed. Which of the following is that
A. Cu2O
B. Cu
C. CuO
D. CuSO4
Which of the following compounds when heated with CO at 150"C and 500 atm pressure in presence of BF3 forms ethyl propionate ?
A. C2H5OH
B. CH3OCH3
C. C2H5OC2H5
D. CH3OC2H5
When compound X is oxidised by acidified potassium dichromate, compound Y is formed. Compound Y on reduction with LiAlH4 gives X. X and Y respectively are :
A. C2H5OH, CH3COOH
B. CH3COCH3, CH3COOH
C. C2H5OH, CH3C0CH3
D. CH3CH0, CH3COCH3
Ethyl chloride reacts with sodium ethoxide to form a compound A. Which of the following reactions also yields A ?
A. C2H5C1, KOH (alc. ), Δ
B. 2C2H5OH, conc. H2S04, 1400 C
C. C2H5C1, Mg (dry ether)
D. C2H2 dil H2S04, HgSO4
Hydrolysis of chloroform with aqueous KOH gives finally
A. COCl2
B. CH3NC
C. HCOOK
D. CH2Cl(OH)
Chloroethane reacts with Y to form NaCl and Z. One mole of Z reacts with two moles of HI to form water and iodo ethane. Which of the following is Y
A. CH3COOH
B. CH3CHO
C. C2H5OC2H5
D. C2H5ONa
Which of the following reacts with ethanol to form chloroform
A. SOCl2
B. PCl5
C. HCl
D. CaOCl2/H2O
Absolute alcohol (100% alcohol) is prepared by distilling rectified spirit over:
A. Na
B. CaCl2
C. Mg
D. Mg(OC2H5)2
Dry distillation of calcium acetate and calcium formate forms:
A. methanol
B. ethanal
C. ethanol
D. acetone
Which of the following converts acetic acid into acetyl chloride
A. NaCl
B. HCl
C. Cl2/P
D. PCl3
Which one of the following compounds liberates CO2 from aqueous NaHCO3
A. Aluminium chloride
B. CHCl3
C. CCl4
D. CH3Cl
Hydrolysis of trichloro methane with aqueous KOH gives
A. methanol
B. chloral
C. acetylene
D. potassium formate