Electrophilic Substitution Reactions of Haloarenes

Q.

Treatment of concentrated solution of borax with calculated quantity of H2SO4 gives-

1. 

2. 

3. 

4. 

Q. 34. Which of the following alkane upon Di chlorination can give only two products? 1) CH3-CH2-CH3 2) CH4 3) C(CH3)4 4) cyclohexane

Q. 4 Cyclohexa-1, 4-diene reacts with NBS to form : ? (Is there any rearrangement?)

Q. 34. Fund the no of position isomerism in tri substituted benzene if all substituent are different.

Q. What will be the hybridisation of oxygen in aldehydes, ketones and nitrocompounds?

Q. 34. Hybridization of Cr and Mn in K2Cr2O72- and KMnO4 respectively

Q. Which of the following sequence of reactions will give 1-bromo 4-trichloro methyl benzene

1. Toluene $\underset{Fe}{\stackrel{B{r}_2}{\to }}$ o-bromotoluene $\underset{C{l}_2}{\stackrel{h\nu orheat}{\to }}$
2. Toluene $\underset{Fe}{\stackrel{B{r}_2}{\to }}$ p-bromotoluene $\underset{C{l}_2}{\stackrel{h\nu orheat}{\to }}$
3. Toluene $\underset{h\nu orheat}{\stackrel{C{l}_2}{}}$ trichloromethyl benzene $\underset{B{r}_2}{\stackrel{Fe}{\to }}$
4. None of these

Q. 4 Which of the following alkane upon by dichlorination can give only two products? A) propane B) methane C) neopentane D) cyclohexane

Q. 48.How to find hybridisation of compound? Like XeF4, H2O

Q. Which of the following shows carbyl amine reaction
A. Aniline B. Ethyl methyl amine

C. Tertiary butyl amine D. Isopropyl amine

The correct answer is

1. A, B, C, D

2. B, C

3. A, D

4. A, C, D

Q. RE-AIPMT 2015Assuming complete ionization, same moles ofwhich of the following compounds will require theleast amount of acidified KMnO, for completeoxidation?(1) FeC204(3) FesOA(2) Fe(NO22(4) FeSO3

Q. 12.what is hybridisation of Benzene

Q. shouldnt tert butyl bromide undergo sn1 instead of e1

Q. Zeolite purified water is not de-ionised. Explain giving reasons.

Q. The reaction of aqueous $KMn{O}_4\text{with}{H}_2{O}_2$ in acidic condic conditions gives :

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Q.

1 , 2 di-bromo cyclohexane on dehydro halogenation gives

[UPSEAT 2003]

1. 

2. 

3. 

4. None of these