Addition of Sulphuric Acid and Water

Q. Methanol and ethanol are distinguished by:

1. $\text{Treating with Schiff's reagent}$
2. $\text{Treating with Lucas reagent}$
3. $\text{Heating with iodine and alkali}$
4. $\text{Treating with}Cr{O}_3\text{in dil.}{H}_{2}S{O}_4$

Q.

What is Carbocation?

Q. The product(s) obtained on reaction of $HgS{O}_4+H_{2}S{O}_4$ with 1-butyne would be

1. 
2. $C{H}_3-C{H}_2-C{H}_2-CHO$
3. $C{H}_3-C{H}_2-C{H}_2-OH$
4. $C{H}_3-C{H}_2-C{H}_2-COOH$

Q. Addition of cold concentrated $H_{2}S{O}_4$ with alkene is an example of

1. electrophilic substitution reaction
2. nucleopilic addition reaction
3. electrophilic addition reaction
4. nucleophilic substitution reaction

Q. Which of the following compounds gives a ketone when its vapours are passed over heated copper at 573K?

1. Propan-1-ol
2. Propan-2-ol
3. 2-Methylpropan-1-ol
4. 2-Methylpropan-2-ol

Q. Explain with structure the number of geometrical and optical isomers in type [MA2B4].

Q.

When neopentyl alcohol is heated with an acid, it is slowly converted into an 85:15 mixture of alkenes A and B, respectively. What are these alkenes?

1. 

2. 

3. 

4. 

Q. SN₁ reactions are accompanied by racemization in optically active alkyl halides. Give reason.

Q. An alkyl halide by the formation of its Grignard reagent and heating with water yields propane. What is the original alkyl halide?

1. Propyl bromide
2. Ethyl iodide
3. Methyl idode
4. Ethyl bromide

Q. The only alcohol that can be prepared by the indirect hydration of alkene is

1. Ethyl alcohol
2. Propyl alcohol
3. Isobutyl alcohol
4. Methyl alcohol

Q. Gauche form is more stable than Antiform in 2 floroethanol Ethane-1, 2 diol Ethane Both 1 and 2

Q. Iodobenzene can be obtained by:

1. 
2. 
3. 
4. 

Q. Which of the following compound does not produce oxyacid of central atom on hydrolysis?give me detail explantion (a) BF3 (b) NCl3 (c) SF4 (d) PCl5

Q. The possible number of steroisomers of the product of following reaction reagent would be :
$Ph-CH=CH-CH\left(C{H}_3\right)-CHO\stackrel{N{H}_{2}OH}{\to }$

1. 2
2. 4
3. 6
4. 8

Q. 50.How many optical isomers are possible for(MABCD), where M is dsp2 hybridised?

Q.

Explain fully the physical properties of ...-

A . Haloalkanes

B. Haloarenes

Q.

What is the role of water in Chemical Reactions?

Q.

The favorable conditions for the hydration of alkenes are

1. high water concentration and low temperature

2. low water concentration and high temperature
   

3. low water concentration and low temperature
   

4. high water concentration and high temperature
   

Q. Find Kp for t following reaction
SO2 Cl2 gives SO2 +Cl2
If sulphuryl chloride decomposes to the extent of 91.2% a t 102°C and total pressure 1 atm

Q. Match the reactions in Column-I with appropriate types of steps/reactive intermediate involved in these reactions as given in Column-II

	Column-I
(A)
(B)
(C)
(D)

	Column II
(p)	Nucleophilic substitution
(q)	Electrophilic substitution
(r)	Dehydration
(s)	Nucleophilic addition
(t)	Carbanion

​​​​​​​
aq. \( NaOH \)
\( CH _{3} MgI = \)
\( \stackrel{ H _{2} SO _{4}}{\longrightarrow} \)
\( H _{2} SO _{4} \rightarrow \)

Q.

A mixture of ${\mathrm{C}}_2{\mathrm{H}}_6$, ${\mathrm{C}}_2{\mathrm{H}}_4$ and ${\mathrm{C}}_2{\mathrm{H}}_2$ is bubbled through an alkaline solution of Cuprous chloride. Which gas will come out?

Q. Equal moles of benzene and toulene r mixed .the VP of benzene and toulenein pure state r 700 and 600 mm Hg respectively.the mole fraction of benzene in vapour state is?

Q. Which of the following reaction can be employed for getting unsymmetrical alkanes in good yield?

1. Wurtz reaction
2. Corey-House synthesis
3. Both (a) and (b)
4. None of the above

Q.

Name the compound KClO_3.

Q. Which of the following is/are true regarding nucleophilic substitution reaction?

1. Reactivities in an $S_{N}2$ reaction
   
2. $S_{N}1$ reaction is favoured by polar protic solvent
3. Nucleophilicity affects the rate of $S_{N}2$ reaction
4. Reactivities in an $S_{N}1$ reaction:$R–I>R–Br>R–Cl>R–F$.

Q.
The number of stereoisomers in the given compound is:

Q. Which of the following steps is not involved in the general mechanism of an electrophillic substitution of benzene?

1. Generation of an electrophile
2. Formation of arenium ion as intermediate.
3. Addition of proton on benzene ring to give carbocation.
4. Removal of proton from $s{p}^3$ carbon atom to restore aromatic character.

Q. Is there any formula to find geometrical and optical isomerism in co ordination compounds ??

Q. In alkene when h20 is added to get alcohol, which rule should be used? 1)anti markovnikov 2)markovnikov

Q.

Which alkene is obtained on dehydration of the following alcohol in the presence of H₂SO₄ ?

1. 

2. 

3. 

4. None of the above