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CHEMISTRY QUIZ 21 (GENERAL ORGANIC CHEMISTRY 1)

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Marks: 200

Q.   1

Which of the following orbital overlaps is
involved in the formation of the carbon–carbon
single bond in the molecule HCC–CH=CH2

Q.   2

Which of the following species (I), (II), (III),
(IV) has an sp2

hybridized carbon -

 CH3


3
CH . CH3 CH2
:
(I) (II) (III) (IV)

Q.   3

Which of the following has a bond formed by
overlap of sp–sp3

hybrid orbital?

Q.   4

The maximum number of carbon atoms
arranged linearly in the molecule CH3
– C 

C – CH = CH2 is -

Q.   5

The inductive effect :

Q.   6

Decreasing – I power of given groups is -
(a) CN (b) NO2

(c) – NH2
(d) F

Q.   7

Arrange basicity of the given compounds in
decreasing order -
(a) CH3
– CH2
– NH2
(b) CH2
= CH – NH2

(c) CH  C – NH2

Q.   8

Consider following acid
ClCH2COOH, CH3COOH, CH3CH2COOH
I II III
Correct order of theIr pH value.

Q.   9

Which is the correct order of increasing
basicity ?

Q.   10

'M' effect is the resonance of

Q.   11

Which of the following contain + M but - 
effect -

Q.   12

The meta-directing power of the groups –NH2
,

–OCH3
, –C6H5
and – NO2

follows the order

Q.   13

Arrange in increasing order of basicity
CH3NH2
, (CH3
)
2NH, C6H5NH2
, (CH3
)
3N

Q.   14

Hyperconjugation occur due to overlaping of-

Q.   15

Which of the following properties cannot be
explained on the basis of hyperconjugation.

Q.   16

Correct order of reactivity–

Q.   17

The formation of cyanohydrin from a ketone
is an example of–

Q.   18

Involves no displacement or shifting of
electrons–

Q.   19

Which of the following exhibit electromeric
effect

Q.   20

Shifting of electron of a multiple bond under
the influence of a reagent is called

Q.   21

Homolytic fission of a hydrocarbon will
liberate :

Q.   22

Heterolytic fission of carbon-chlorine bond
produces :

Q.   23

In CH3CH2OH, the bond that undergoes
heterolytic cleavage most readily is

Q.   24

Which of the following statements is correct?

Q.   25

Which of the following statements is wrong ?

Q.   26

Consider the following carbanions -
(a) CH3
– CH2

(b) CH2
= CH

(c) CH 

C

Correct order of stability of these carbanions
in decreasing order is -

Q.   27

Carbon free radicals are -

Q.   28

Reactivity of C—H bond (abstraction of H)
CH2
=CH—H, CH3—H, CH3CH2—H
(III)
(CH3
)
2CH—H (CH3
)
3C—H,
2°(IV) 3°(V)

Q.   29

Which of the following statements are correct
for nucleophile

Q.   30

Which among the following species is an
ambident nucleophile

Q.   31

Which of the following has the highest
nucleophilicity –

Q.   32

Arrange the following nucleophiles in the order
of their nucleophilic strength

Q.   33

Correct order of leaving group tendency -

Q.   34

The nucleophilicities of CH3

, NH2

, OH–
and

F

decrease in the order -

Q.   35

Which of the following is the strongest
nucleophile -

Q.   36

Which of the following belongs to +  group

Q.   37

Which of the following is the strongest - I
group -

Q.   38

Which of the statement are correct?

Q.   39

Among the following compounds, the strongest
acid is –

Q.   40

Heterolysis of propane will yield –

Q.   41

Carbocations may be stabilised by -

Q.   42

In the anion HCOO–

, the two carbon-oxygen
bonds are found to be equal length. What is
the reason for it –

Q.   43

Which of the following resonance structures
is the major contributor to the resonance
hybrid ?
CH3
– CH2


CH – CH3
 CH3
– CH2
– CH = CH3

Q.   44

Consider the following three halides -
(a) CH3
– CH2
– Cl

(b) CH2
= CH – Cl
(c) C6H5
– Cl
Arrange C–Cl bond length of these
compounds in decreasing order -

Q.   45

The species 
CH3 CHCH3

is less stable

than -

Q.   46

Which of the following orbital overlaps in involved in the formation of the carbon–carbonsingle bond in the molecule HCC–CH=CH2

Q.   47

Which of the following species (I), (II), (III),(IV) has an sp2

hybridized carbon - CH33CH . CH3 CH2:

(I) (II) (III) (IV)

Q.   48

Which of the following hydrocarbon groups

designated as I, II, III, IV and V has planar

geometry -

Phenyl Cyclohexyl Cyclopentyl Butyl Vinyl

I II III IV V

Q.   49

Which of the following has a bond formed by

overlap of sp–sp3

 

hybrid orbital?

Q.   50

The maximum number of carbon atoms

arranged linearly in the molecule CH3

– C  C – CH = CH2 is -

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