TEST FOR AIEEE, WBJEE Chemistry

When chloroform is exposed to air and sunlight the compound obtained is:
Chloral
Acetyl chloride
Phosgene
Methyl chloride
Among the following the most reactive towards alcoholic KOH is :
CH2=CHBr
CH3COCH2CH2Br
CH3CH2Br
CH3CH2CI
3-Phenylpropene on reaction with HBr gives (as a major product):
C6H5CH2CH(Br)CH3
CH3CH=CHCH3
CH3CH2CH=CH2
C5H5CH(Br)CH=CH2
C3H6CI2 (A) by hydrolysis forms C3H6O(B), B gives iodoform test if A is:
1,1-dichloropropane
1,2-dichloropropane
1,3-dichloropropane
2,2-dichloropropane
Which addition is syn type?
Both of the above
None of the above
Which one of the following cannot undergo nucleophilic substitution under ordinary condition?
Allyl chloride
Benzyl chloride
n-Propyl chloride
Vinyl chloride
The most suitable reagent for producing dichlorocarbene from chloroform is:
Sodium acetate
Potassium-t-butoxide
Trethyl amine
Pyridine
Select incorrect statement:
Reactivity of alkyl halides towards EI or E2 reaction is 3o > 2o > 1o Alkyl Halides
EI reaction is stereospecific
Dehydrohalogenation is trans-elimination
EI and SN 1 reactions are competitive
What is the final product of the following reaction? CH3CH=CH2 + NBS   (major)
CH3CH=CHCN
CH3CH=CHNC
CH2=CHCH2CN
CH2=CHCH2NC
Addition of HBr gives same product in the presence or absence of peroxide when alkene is:
1-butene
isobutene
2,3-dimethyl-2-butene
propene
Bond dipole moments increase in the order:
C(F< C( CI> C(Br C(F< C( CI< C(I C(I< C( Br< C(F C(I< C( Br< C(CI Which of the following halogen-exchange reactions is possible?
R(I + NaCI (
R(F + KCI (
CH3F + AgBr (
RCI + NaI (
When CH4, C2H2, C2H4 and C2H6 gases are passed through the Wolf-bottle containing ammoniacal AgNO3, then which one of the following gas does not come out from the bottle?
CH4
C2H2
C2H4
C2H6
Consider following statements: I: vinyl acetate is used in plastic industry. II: vinyl cyanide and butadiene form buna-N synthetic rubber. III: In the addition of HBr or Br2 to an alkyne, second addition is usually faster than the first IV: Bromo alkene is more reactive than an alkyne Select correct statements:
I, II
II, III
I, III
III, IV
Which is the ethinylation reaction?
CH3C CCH3 + HCHO
CH3C CH + (CH3)2CO
CHH CH + CH3CH2CI
CH3C( CCH3 and CH3CH2C(CH can be distinguished by:
Ammoniacal AgNO3
Ammoniacal Cu2CI2
Both (a) and (b)
None of these
Which of the following has stereocentre?
1-pentene
2-pentene
Both of these
None of these
1-Butene is formed selectively from….on reaction with alcoholic KOH.
1-chlorobutane
2-chlorobutane
Both of these
None of these
Select correct statement(s):
The more stable the CHEMSITRY, Alkenes, the more easily it is formed
Et3N (triethylamine) can also be used for the dehydrohalogenation of alkyl halide
Less-substituted (OBJECTIVE CHEMSITRY) Alkenes in an elimination reaction is referred to as a Hofmann elimination product
All are correct statements
Select correct statement(s):
The dipole moment of cis-2-butene is the vector sum of the CH3(C and C(H bond dipoles
Sp2-carbon is more electronegative than an sp3-carbon
NBS is used for brominating CHEMSITRY, Alkeness (ORGANIC CHEMISTRY) (ORGANIC CHEMISTRY) at the allylic position
All are correct statments
Reducing agent in Birch reduction is:
NaBH4 PtCI2
Na/Liquid NH3
RhCI(Ph3P)3
N2H4
Select correct statement(s):
Rate of hydrogenation of (CH=CH2> (CH=CH(
The (C(C( bond is reduced more readily than C=C( bond ( (
Birch reaction is effective for reduction of terminal double (C=C) bond
All are correct statements
Alkane, C5H12, in which all H-atoms are equivalent is:
n-pentane
2-methylbutane
2,2-dimethylpropane
cyclopentane
Cis-trans isomerism is not possible in alkynes because of:
180o bond-engle at the carbon-carbon triple bond
Greater electrongativity of sp-hybridised carbon
Shorter bond length of carbon-carbon triple bond
Lesser stability of sp-hybridised state
Alkynes are reduced to trans-alkene by Na/NH3. Reduction is due to:
Nascent hydrogen
Molecular hydrogen
Atomic hydrogen
Solvated electrons
Only one type of carbonyl compound is obtained by hydration of the following alkynes:
CH ( CH or CH3C( CH
CH3C( CH or CH3CH2C ( CH
CH( CH or CH3C (CCH3
In all cases
Consider following methods of converting alkyne into carbonyl compounds: I: HgSO4/H2SO4 II: BH3. THF/H2O2.OH- Terminal alkyne (other than HC(CH) changes to aldhyde by:
I
II
Both (a) and (b)
None of these
In oxidative-hydroboration, intermediate is:
enol
carbene
Carboraction
carbanion
I CH2=C=CH2 II CH3C( CH III CH3C ( CH Acetone is the major product in:
I, II
I, III
II, III
I, II, III
What is the product when 1-butyne reacts with excess of HBr?
2,2-dibromobutane
2-bromobutane
1,1,2,2-tetrabromobutane
1,2-dibromobutene
Description:

This is a multiple choice test.
Click the Start Test button below to start.
A question and the possible answer choices appear. Select the choice you find to be the correct answer of the question. Clicking on a choice saves it as your answer for the question.
Use Next and Back buttons to move on to the next or previous question in the test.
There is no negative marking for wrong choices selected.
After you finish the test, click on the End Test button to submit your test and see your scorecard.
You can review your answer also.

Discussion
DIPANKAR DAS
Experienced chemistry teacher for JEE Mains & Adv.(IIT), WBJEE, NEET
User
83 Followers

Your Facebook Friends on WizIQ

More Tests By Author

NEET organic chemistry
15 Questions | 110 Attempts

JEE MAINS ORGANIC
15 Questions | 443 Attempts

Organic chemistry test for aieee
30 Questions | 547 Attempts