Haloalkanes And Haloarenes Test

Haloalkanes And Haloarenes

This is haloalkanes and haloarenes Test-01 for CBSE class 12 Chemistry.. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
The IUPAC name for tertiary butyl iodide is
  • A
    1 – Iodo, 3 – methyl propane
  • B
    4 – Iodobutane
  • C
    2 – Iodobutane
  • D
    2 – Iodo 2-methyl propane
    Correct
2
Give IUPAC names of the following compound:
Question 2 figure 1
  • A
    1 – Chloro – 2 – methylbenzene
  • B
    2 – Chlorotoluene
  • C
    O – Chlorotoluene
  • D
    B and D
    Correct
3
The position of –Br in the compound in $C{H_3}CH = = CHC\left( {Br} \right){\left( {C{H_3}} \right)_2}$can be classified as
  • A
    Allyl
    Correct
  • B
    Secondary
  • C
    Vinyl
  • D
    Aryl
4
The reaction RX + 2Na + RX _______________? R – R + 2NaX is called.
  • A
    Fittig reaction
  • B
    Wurtz – Fittig reaction
    Correct
  • C
    Williamson’s synthesis
  • D
    Sandmeyer’reaction
5
The following $(CH_3)_2CHCH_2CH_2Cl$ $(CH_3)_2CHCH(Cl)CH_3$ $(CH_3)_2C(Cl)CH_2CH_3$ $CH_3CH(CH_2Cl)CH_2CH_3$ are the possible structural isomers expected to be formed if one of the hydrogen atoms is replaced by chlorination. The original compound is
  • A
    ${\left( {C{H_3}} \right)_2}CHC{H_3}$
  • B
    $\begin{array}{*{20}{l}} {{{\left( {C{H_3}} \right)}_3}CHC{H_2}C{H_2}C{H_3}} \end{array}$
  • C
    $\begin{array}{*{20}{l}} {{{\left( {C{H_3}} \right)}_2}CHC{H_2}C{H_3}} \end{array}$
    Correct
  • D
    $\begin{array}{*{20}{l}} {C{H_3}{{\left( {C{H_2}} \right)}_2}C{H_2}C{H_3}} \end{array}$
6
Yield of the following compound is high
  • A
    $\begin{array}{*{20}{l}} {{{\left( {C{H_3}} \right)}_2}C\left( {Cl} \right)C{H_2}C{H_3}\;\;} \end{array}$
    Correct
  • B
    None of the above
  • C
    $\begin{array}{*{20}{l}} {{{\left( {C{H_3}} \right)}_2}CHC{H_2}C{H_2}Cl\;\;\;\;\;\;} \end{array}$
  • D
    $\begin{array}{*{20}{l}} {C{H_3}CH\left( {C{H_2}Cl} \right)C{H_2}C{H_3}} \end{array}$
7
For the same alkyl group, an alkyl bromide has a higher boiling point than alkyl fluoride because,
  • A
    the magnitude of van der Waal forces
  • B
    Iodide has more electrons
  • C
    all the below (B, C, D)
    Correct
  • D
    Iodide is bigger in size
8
AgCN reacts with haloalkanes to form isocyanide. Haloalkanes react with KCN to form alkyl cyanides as main product
  • A
    KCN is mainly covalent in nature
  • B
    AgCN provides cyanide ions in solution.
  • C
    KCN provides cyanide ions in solution.
    Correct
  • D
    AgCN is mainly ionic in nature
9
Bromomethane, Chloromethane, Dibromomethane. 1 – Chloropropane, Isopropyl chloride, 1 – Chlorobutaneare all
  • A
    Completely soluble in water
  • B
    Slightly soluble in organic solvents
  • C
    Completely soluble in organic solvents
    Correct
  • D
    Insoluble in organic solvents
10
In the reaction, R – X + NaoR’ → ROR’ + X ( – ve ion) The main product formed is
  • A
    Amine
  • B
    Alcohol
  • C
    Ether
    Correct
  • D
    Ester
11
$CH_3$=$CH_2$$CH_3$ + H – I → $CH_3$$CH_2$$CH_2I$ + $CH_3$$CHICH_3$ (major) This reaction is
  • A
    Sandmeyer’s reaction
  • B
    Markovnikov’s rule.
    Correct
  • C
    free radical halogenations
  • D
    Finkelstein reaction
12
Finkelstein reaction is
  • A
    Option A
  • B
    Option B
  • C
    Option C
    Correct
  • D
    Option D
13
In the following reaction, the compound used in the reaction for synthesizing ethyl fluoride is – – – – – +AgF → $H_3C$ – F + AgBr
  • A
    $H_3C$ – Br,electrophilic substitution
  • B
    $H_3C$ – Br ,Swarts reaction
    Correct
  • C
    $H_3C$ – Br,Sandmeyer’s reaction
  • D
    $H_3C$ – Br,Free radical fluorination of methane
14
Which compound in the following pair reacts faster in $S_N2$ reaction with $OH^ –$ ? $\begin{gathered} i){\text{ }}C{H_3}Br{\text{ }}or{\text{ }}C{H_3}I \hfill \\ ii){\text{ }}C{H_3}Cl{\text{ }},{\left( {C{H_3}} \right)_3}CCl \hfill \\ \end{gathered}$
  • A
    $CH_3Br$ and $CH_3I$
  • B
    $CH_3Cl$ and $CH_3Br$
  • C
    $CH_3I$ and $CH_3Cl$
    Correct
  • D
    $CH_3Br$ and ,$(CH_3)_3$ CCl
15
Question 15 figure 1
  • A
    Greater to smaller Option A
    Correct
  • B
    Greater to smaller Option B
  • C
    Greater to smaller Option C
  • D
    Greater to smaller Option D