Haloalkanes and Haloarenes

Question 1

An antibiotic produced by microbes that is effective for the treatment of typhoid fever is

Answer 1

Chloramphenicol

Question 2

Chloramphenicol is an antibiotic produced by microbes which contains

Answer 2

Chlorine

Question 3

The iodine containing hormone produced by human body is

Answer 3

Thyroxine

Question 4

deficiency of thyroxine causes

Answer 4

goiter

Question 5

Synthetic halogen compound used for the treatment of malaria is

Answer 5

Chloroquine

Question 6

Chloroquine is used in the treatment of

Answer 6

malaria

Question 7

Halothane is used as

Answer 7

anesthetic during surgery

Question 8

Synthetic halogen compound that is used as anesthetic during surgery is

Answer 8

Halothane

Question 9

certain fully fluorinated compounds are considered as

Answer 9

potential blood substitutes in surgery

Question 10

Gem-dihalides in common naming system are known as

Answer 10

Alkylidene halides

Question 11

Vic-dihalides in common naming systems are known as

Answer 11

Alkylene dihalides

Question 12

ATMS, How is bond length related to electronegativity

Answer 12

inversely

Question 13

ATMS, how is electronegativity related to bond enthalpy

Answer 13

directly

Question 14

ATMS, how is bond length related to bond enthalpy?

Answer 14

inversely

Question 15

Efficient reactant with alcohol that gives pure haloalkane is

Answer 15

Thionyl chloride(the reaction produces escapable gaseous products such as SO2 and HCL and hence pure haloalkane is obtained)

Question 16

The catalyst required in the reaction of primary and secondary alcohols with HCL to produce haloalkane is

Answer 16

ZnCl2

Question 17

how can tertiary alcohols be converted into haloalkanes?

Answer 17

by simply shaking the alcohol with concentrated HCL at room temperature

Question 18

Particularly Alkyl bromide is prepared by

Answer 18

constantly boiling with HBr(48%)

Question 19

Particularly alkyl iodide is prepared by

Answer 19

heating alcohols with NaI or KI with 95% orthophosphoric acid

Question 20

Phosphorus tribromide and phosphorus triiodide is prepared

Answer 20

in the reaction mixture(situ) by the reaction of red phosphorus with bromine and iodine respectively.

Question 21

Particularly alkyl chloride is prepared by

Answer 21

either passing HCL gas through the solution of alcohol or by heating a mixture of alcohol with aqueous halogen acid

Question 22

Alkyl iodide is prepared by reaction of alkyl chloride or bromides with NaI in dry acetone is known as

Answer 22

Finkelstein reaction

Question 23

Alkyl iodide can be prepared by the reaction of alkyl chloride/bromides with NaI. name the catalyst for this reaction

Answer 23

Dry Acetone

Question 24

Catalyst used in Finkelstein reaction is

Answer 24

dry acetone

Question 25

Alkyl fluorides are prepared by

Answer 25

Heating an alkyl chloride/bromide in the presence of metallic fluoride

Question 26

Preparation of alkyl fluorides is done by

Answer 26

heating alkyl chloride/bromide with metallic fluorides

Question 27

Reaction of preparing alkyl fluoride is known as

Answer 27

Swart’s reaction

Question 28

Aryl chlorides are prepared by

Answer 28

electrophilic substitution of arenes with chlorine in the presence of lewis acid catalysts like Ferrous or Ferric chloride

Question 29

Aryl bromides are prepared by

Answer 29

electrophilic substitution of arenes with bromine in the presence of lewis acid catalysts such as ferrous or ferric chloride

Question 30

Aryl iodides are prepared by

Answer 30

reaction with iodine in the presence of an oxidising agent like HNO3 HIO4 to oxidise the HI formed during iodination

Question 31

Aryl fluorides cannot be prepared because of

Answer 31

high reactivity of fluorine

Question 32

Preparing haloarenes by amines is known as

Answer 32

Sandmeyer’s reaction

Question 33

how is aryl chloride/bromide prepared?

Answer 33

amine suspended in mineral acis is treated with sodium nitrite to obtain a diazonium salt which is mixed with cuprous chloride/bromide

Question 34

What is the alternate method in which Sandmeyer’s reaction can be done?

Answer 34

Replacement of Diazonium salt does not require cuprous halide and is done simply by shaking the diazonium salt with potassium iodide(KI)

Question 35

Melting point of para-isomers is

Answer 35

highest (because of symmetry of it that fits in crystal lattice better as compared to other o-isomers and m-isomers)

Question 36

what are names mono halogen derivative of benzene?

Answer 36

their common name and IUPAC names are same

Question 37

if cyanide group links through carbon then its name is?

Answer 37

Alkyl cyanide

Question 38

linking through nitrogen atom of a cyanide group gives

Answer 38

Isocyanide

Question 39

The linkage through oxygen atom of a nitrite group results in

Answer 39

Alkyl nitrites

Question 40

The linkage through nitrogen atom of a nitrite group gives

Answer 40

Nitroalkanes

Question 41

Who proposed Sn2 mechanism?

Answer 41

Edward Davies Hughes and Sir Christopher Ingold

Question 42

Who developed the first prism that produced plane polarized light?

Answer 42

Willian Nicol

Question 43

In Sn2 reaction methyl chloride reacts with hydroxide ion to form

Answer 43

Alcohol(Methanol) and chloride ion

Question 44

In Sn1 reaction, tert-butyl bromide reacts with hydroxide ion to form

Answer 44

Alcohol(2-methyl 2-propanol) and bromide ion

Question 44

Sn2 reactions of optically active halides are accompanied by which configuration?

Answer 44

Inversion