Which of the following compounds undergo E2 reactions more easily?
1. | \((CH_3)_2C.CH_2CH_3]\\ ~~~~~~~~~~~~~~|\\ ~~~~~~~~~~~~~Br\) |
2. | \(CH_3(CH_2)_2CH_2Cl\) |
3. | \(CH_3(CH_2)_2CH_2I\) |
4. | \(~~~~~~~~~~~~~~~~~~I\\ ~~~~~~~~~~~~~~~~~~|\\ (CH_3)_2-C-CH_2CH_3\) |
Which is most reactive for SN2 reactions ?
(1) CH3I
(2) C2H5I
(3) C3H7I
(4) C4H9I
Which of the following options is correct?
1. CH3-CH=CH-CH3 predominates
2. CH2=CH-CH2-CH3 predominates
3. Both are formed in equal amounts
4. The product ratio is dependent on the halogen X
Ethylidene dichloride on treatment with aqueous KOH gives:
(1) CH3CHO
(2)
(3) HCHO
(4)
Mark the appropriate reagent used to distinguish vicinal and geminal dihalides.:
1. | KOH (aq.) | 2. | KOH(alc.) |
3. | Zn dust | 4. | None of these |
A compound A of formula C3H6Cl2 on reaction with alkali can give B of formula C3H6O or C of formula C3H4. B on oxidation gave a compound of the formula C3H6O2. C with dilute H2SO4 containing Hg2+ ion gave D of formula C3H6O, which with bromine and NaOH gave the sodium salt of C2H4O2. Then A is:
1. CH3CH2CHCl2
2. CH3CCl2CH3
3. CH3CHClCH2Cl
4. CH2ClCH2CH2Cl
Ethylene on treatment with chlorine gives:-
1. Ethylene dichloride
2. Ethylene chlorohydrin
3. CH4
4. C2H6
The compound A forms B with sodium metal and again A forms C with PCl5, but B and C form diethyl ether. Thus A, B and C are:
(1) C2H5OH, C2H5ONa , C2H5Cl
(2) C2H5OH, C2H5Cl, C2H5ONa
(3) C2H5OH, C2H5Cl, C2H4Cl2
(4) C2H5OH, C2H5Cl, C2H5OC2H5
The halide which undergoes nucleophilic substitution most readily is:
(1) p-H3CC6H4Cl
(2) o-H3COC6H4Cl
(3) p-ClC6H4Cl
(4) p-O2NC6H4Cl
Which chloro derivative of benzene among the following would undergo hydrolysis most readily with aqueous NaOH to furnish the corresponding hydroxy derivative?
1.
2.
3.
4.