Introduction to Haloalkanes

Q.

Which of the following compounds will form the precipitate with aq. AgNO₃ solution most readily?

1. 

2. 

3. 

4. 

Q.

The reactivity of ethyl chloride is

[KCET 1986]

1. More or less equal to that of chlorobenzene

2. More or less equal to that of benzyl chloride

3. More than that of benzyl chloride

4. Less than that of chlorobenzene

Q.

Sodium carbonate can be manufactured by Solvays process but potassium carbonate cannot be prepared because:

1. ${\mathrm{K}}_2{\mathrm{CO}}_3$ is more soluble

2. ${\mathrm{K}}_2{\mathrm{CO}}_3$is less soluble

3. ${\mathrm{KHCO}}_3$ is more soluble than ${\mathrm{NaHCO}}_3$

4. ${\mathrm{KHCO}}_3$ is less soluble than ${\mathrm{NaHCO}}_3$

Q. Classify the following compounds as primary, secondary, and tertiary halides.

(A) $1$-Bromobut-$2$-ene

(B) $4$-Bromopent-$2$-ene

(C) $2$-Bromo-$2$-methylpropane

Q. The decreasing order of rate of $S_{N}2$ reaction increases by:

1. IV > III > II > I
2. II > III > I > IV
3. II > I > IV > III
4. None of these

Q.

What is difference between butane and n-butane.

Q.

What is the difference between silicon and silicon dioxide?

Q. Reaction between acetaldehyde and methylmagnesium chloride followed by hydrolysis will give:

1. Secondary alcohol
2. Tertiary alcohol
3. Primary alcohol
4. Unsymmetrical ether

Q.

Answer in one word-

Which branch of science is involved with matter, energy and measurement?

Q. Which of the following will react fastest with Lucas reagent?

1. Butan-l-ol
2. Butan-2-ol
3. 2-Methyl propane -2-ol
4. 2-Methyl propane

Q. What is Geminal dihalide?

Q. Which of the following is/are correct regarding polymerisation isomerism?

1. Polymerisation isomers differ in molecular formula and molecular weight.
2. $\left[Pt\right(N{H}_3{)}_{2}C{l}_2]$ and $\left[Pt\right(N{H}_3{)}_4\left]\right[PtC{l}_4]$
   are polymerisation isomers.
3. $\left[Pt\right(N{H}_3{)}_4\left]\right[Pt(N{H}_3{)}_{2}C{l}_3{]}_2$ and $\left[Pt\right(N{H}_3{)}_{3}Cl{]}_2\left[PtC{l}_4\right]$ are polymerisation isomers.
4. All of the above.

Q. The nucleophilicity order of halogens in polar aprotic solvent is

1. $F^{-}>C{l}^{-}>B{r}^{-}>I^{-}$
2. $F^{-}>I^{-}>B{r}^{-}>F^{-}$
3. $F^{-}<C{l}^{-}<B{r}^{-}<I^{-}$
4. $C{l}^{-}>F^{-}>B{r}^{-}>I^{-}$

Q. Which one is not an allylic halide?

1. 3-Chloro cyclohex-1-ene
2. 1- Chloro but-2-ene
3. 3-Chloro prop-1-ene
4. 1-Chloro but-1-ene

Q. Among the following, select the pair that does not form an ideal solution (1) Carbon tetrachloride and Silicon tetrachloride (2) Chlorobenzene and Bromobenzene (3) Chloroform and Carbon tetrachloride (4) Benzene and Toluene

Q. What is the complete IUPAC name of the following stereoisomer ?

1. 
   $\left(1S\right)-2-\text{Ethyl}-3,3-\text{dimethylcyclopentane}$
2. 
   $\left(1R\right)-2-\text{Ethyl}-3,3-\text{dimethylcyclopentane}$
3. 
   $\left(3S\right)-3-\text{Ethyl}-1,1-\text{dimethylcyclopentane}$
4. 
   $\left(3R\right)-3-\text{Ethyl}-1,1-\text{dimethylcyclopentane}$

Q.

Halogens combine with each other to form:

1. Noble gases

2. Interhalogen compounds

3. Polyatomic molecule

4. Organometallic compounds

Q. Is "mono , di , tri " or "bis , tris " considered IUPAC naming for coordination compounds , and can 2 vowels come together ( like "tetraaqua" ) ?

Q. Which one of the following is an allylic halide?

1. 2-Chlorobutane
2. Chloroethene
3. 3-Bromopropene
4. 2-Chloro-2-butene
5. Dichloromethane

Q. Name the Scientist who stated that matter can be converted into energy

Q.

The reactivities of methyl chloride, propyl chloride and chlorobenzene are in

the order

[KCET 1988]

1. Methyl chloride > propyl chloride > chlorobenzene

2. Propyl chloride > methyl chloride > chlorobenzene

3. Methyl chloride > chlorobenzene > propyl chloride

4. Chlorobenzene > propyl chloride > methyl chloride

Q. An alkyl halide in which halogen atom is attached to that $C$ atom which is attached to only one $C$ in molecule is called as:

1. primary alkyl halide
2. tertiary alkyl halide
3. secondary alkyl halide
4. none of these

Q.

The reactivity of ethyl chloride is

[KCET 1986]

1. More or less equal to that of benzyl chloride

2. More than that of benzyl chloride

3. More or less equal to that of chlorobenzene

4. Less than that of chlorobenzene

Q. Alkyl halides are very reactive organic compounds in which alkyl fluorides are generally not used in chemical reactions because of their:

1. nucleophillic character
2. high reactivity
3. less reactivity
4. none of these

Q.

Which of the following is not the possible structure of C₄H₉Br?

1. CH₃CH₂CH₂ CH₂Br

2. CH₃CBr(C₂H₅) CH₃

3. CH₃CH₂ CH (Br)CH₃

4. CH₃CH(CH₃) CH₂Br

Q. Compounds derived from the alkanes from the replacement of one or more than one hydrogen atoms from halogen atoms are called as:

1. alkyl halide
2. haloalkanes
3. halo arenes
4. both $A$ and $B$

Q. why benzamide is least reactive with water

Q. Chloroform is ($CHC{l}_3$):

1. primary alkyl halide
2. secondary alkyl halide
3. None of these
4. teriary alkyl halide

Q. The correct structure of tribromooctaoxide is

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1. 
2. 
3. 
4. 

Q. All halogenoalkanes contain a halogen atom - fluorine, chlorine, bromine or iodine - attached to a/an ____ group.

1. alkyl
2. aryl
3. benzyl
4. benzylic