Which of the following orbital overlaps isinvolved in the formation of the carbon–carbonsingle bond in the molecule HCC–CH=CH2
Which of the following species (I), (II), (III),(IV) has an sp2
hybridized carbon -
CH3
3CH . CH3 CH2:(I) (II) (III) (IV)
Which of the following has a bond formed byoverlap of sp–sp3
hybrid orbital?
The maximum number of carbon atomsarranged linearly in the molecule CH3– C
C – CH = CH2 is -
The inductive effect :
Decreasing – I power of given groups is -(a) CN (b) NO2
(c) – NH2(d) F
Arrange basicity of the given compounds indecreasing order -(a) CH3– CH2– NH2(b) CH2= CH – NH2
(c) CH C – NH2
Consider following acidClCH2COOH, CH3COOH, CH3CH2COOHI II IIICorrect order of theIr pH value.
Which is the correct order of increasingbasicity ?
'M' effect is the resonance of
Which of the following contain + M but - effect -
The meta-directing power of the groups –NH2,
–OCH3, –C6H5and – NO2
follows the order
Arrange in increasing order of basicityCH3NH2, (CH3)2NH, C6H5NH2, (CH3)3N
Hyperconjugation occur due to overlaping of-
Which of the following properties cannot beexplained on the basis of hyperconjugation.
Correct order of reactivity–
The formation of cyanohydrin from a ketoneis an example of–
Involves no displacement or shifting ofelectrons–
Which of the following exhibit electromericeffect
Shifting of electron of a multiple bond underthe influence of a reagent is called
Homolytic fission of a hydrocarbon willliberate :
Heterolytic fission of carbon-chlorine bondproduces :
In CH3CH2OH, the bond that undergoesheterolytic cleavage most readily is
Which of the following statements is correct?
Which of the following statements is wrong ?
Consider the following carbanions -(a) CH3– CH2
(b) CH2= CH
(c) CH C
Correct order of stability of these carbanionsin decreasing order is -
Carbon free radicals are -
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)
Which of the following statements are correctfor nucleophile
Which among the following species is anambident nucleophile
Which of the following has the highestnucleophilicity –
Arrange the following nucleophiles in the orderof their nucleophilic strength
Correct order of leaving group tendency -
The nucleophilicities of CH3–, NH2–, OH–and
F–decrease in the order -
Which of the following is the strongestnucleophile -
Which of the following belongs to + group
Which of the following is the strongest - Igroup -
Which of the statement are correct?
Among the following compounds, the strongestacid is –
Heterolysis of propane will yield –
Carbocations may be stabilised by -
In the anion HCOO–
, the two carbon-oxygenbonds are found to be equal length. What isthe reason for it –
Which of the following resonance structuresis the major contributor to the resonancehybrid ?CH3– CH2–CH – CH3 CH3– CH2– CH = CH3
Consider the following three halides -(a) CH3– CH2– Cl
(b) CH2= CH – Cl(c) C6H5– ClArrange C–Cl bond length of thesecompounds in decreasing order -
The species CH3 CHCH3
is less stable
than -
Which of the following orbital overlaps in involved in the formation of the carbon–carbonsingle bond in the molecule HCC–CH=CH2
hybridized carbon - CH33CH . CH3 CH2:
(I) (II) (III) (IV)
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
Which of the following has a bond formed by
overlap of sp–sp3
The maximum number of carbon atoms
arranged linearly in the molecule CH3
– C C – CH = CH2 is -