Elimination Reactions of Alkyl Halides

Q.

Which of the following is a correct statement?

1. But-1-ene is Hoffmann Product

2. But-2-ene is saytzeff Product

3. Both (a) and (b) are correct

4. None is correct

Q.

During debromination of meso-2, 3-dibromobutane, the major compound formed is

1. N-butane

2. 1-butene

3. Cis-2-butene

4. Trans-2-butene

Q. Arrange the following in the decreasing order of their $E_2$ reaction tendencies:

1. X>Y>Z
2. X>Z>Y
3. Y>Z>X
4. Z>Y>X

Q.

Does the nucleophile attack the electrophile ?

Q. A mixture of 1-chloropropane and 2-chloropropane when treated with alcoholic KOH gives

1. 2- Propene
2. 1-Propene
3. Isopropylene
4. A mixture of 1-propene and 2-propene

Q.

State the condition required for the catalytic hydrogenation of ethyne.

Q. $C{H}_3-CHCl-CHCl-C{H}_3\underset{Acetone,△}{\overset{NaI}{\to }}2-Butene$
Which of the following is/are true option(s) about the reaction?

1. Above meso compound will give trans-2-butene
2. R, R-2, 3-dichlorobutane will give cis-2-butene
3. S, S-2, 3-dichlorobutane will give cis-2-butene
4. 2R, 3S-2, 3-dichlorobutane will give cis-2-butene

Q. Identify the rate of reaction of given compounds in $E_2$ reactions

1. $I>II>III>IV$
2. $I>III>II>IV$
3. $II>I>III>IV$
4. $II>IV>I>III$

Q.

The number of products (excluding stereoisomes) formed in the given reaction are

Q.

2-Phenyl-2-chloropropane on treatment with alc.KOH gives mainly:

1. 2-Phenylpropene

2. 3-Phenylpropene

3. 1-Phenylpropan-2-ol

4. 1-Phenylpropan-3-ol

Q. $C{H}_3-CHCl-CHCl-C{H}_3\underset{Acetone,△}{\overset{NaI}{\to }}2-Butene$
Which of the following is/are true option(s) about the reaction?

1. Above meso compound will give trans-2-butene
2. R, R-2, 3-dichlorobutane will give cis-2-butene
3. S, S-2, 3-dichlorobutane will give cis-2-butene
4. 2R, 3S-2, 3-dichlorobutane will give cis-2-butene

Q. 1-Phenyl-2-chloropropane when treated with alcoholic KOH gives.... as the major product

1. 1-Phenylpropene
2. 3-Phenylpropene
3. 1-Phenyl-2-propanol
4. Carbylamine reaction

Q.
Number of compounds which can give Haloform reaction, is:

Q. ${\mathrm{ClCH}}_2{\mathrm{CHCl}}_2\stackrel{\mathrm{alc}.\mathrm{base}}{\to }A$

'A' is:

1. $CHCl=CHCl$
2. $C{H}_2=CC{l}_2$
3. $CH\equiv CH$
4. $ClC{H}_{2}CHO$

Q. In which reactions product, formation takes place according to Hofmann's rule?
I.

II.

1. Only I
2. Both I and II
3. Only II
4. None of the above

Q. Which of the following, upon treatment with $tert-BuONa$ followed by the addition of bromine water, fails to decolourize the colour of bromine?

1. 
2. 
3. 
4. 

Q. Calculate the maximum mass (in g) of $AgBr$ precipitate that will be formed when 0.2 mol of the starting material is taken in the above reaction? (Molar mass of $AgBr$=188 g/mol)

Q. Compound A (major product) will be

1. 
2. 
3. Both $\left(a\right)$ & $\left(b\right)$ are formed in equal amounts
4. 

Q.

If the structure of alkyl halide during dehydrohalogenation reaction is such that it can undergo H-elimination from two different sites, then the more highly substituted alkene is the major product. This generalization is known as

1. Markownikoff's Rule

2. Saytzeff's Rule

3. Kharasch's effect

4. Racemization

Q.
P would be:

1. 
2. 
3. 
4. 

Q. What is the product obtained when sodium ethoxide reacts with isobutyl chloride?

1. Tert-Butyl acohol
2. Tert-Butyl ethyl ether
3. Isobutyl ethyl ether
4. Isobutylene

Q.

The major product of the following reaction when heated is:

1. 

2. 

3. Both products are nearly in equal proportions

4. None of the above

Q.

$(C{H}_3{)}_{3}CCl\stackrel{NaCN}{\to }A\stackrel{dil.H_{2}S{O}_4}{\to }B$. Compund B is

1. $(C{H}_3{)}_{3}CCOOH$

2. $(C{H}_3{)}_{3}COH$

3. $\left(C{H}_3{)}_{3}COC\right(C{H}_3{)}_3$

4. All the three

Q. Which of the following reaction will give Hofmann product as major product?

1. 
2. 
3. 
4.