Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

ChemTech (Organic Chem) > Physical Properties of Ethers > Flashcards

Physical Properties of Ethers Flashcards

You may prefer our related Brainscape-certified flashcards:
AP® Chemistry flashcards Periodic Table flashcards Chemistry 101 flashcards Organic Chemistry 101 flashcards
1
Q
  1. Which of the following is distinguish test for ether?
    a) Lucas test
    b) FeCl3 test
    c) Molisch test
    d) Zeisel test
A

d) Zeisel test

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q
  1. Which of the following statement is not true about
    ethers?
    a) The lower ethers are highly volatile and flammable
    b) Lower ethers also act as anaesthetics
    c) Ethers are not organic solvents
    d) Simple ethers (such as diethyl ether) are tasteless
A

c) Ethers are not organic solvents

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q
  1. Why ether is more volatile than an alcohol having the
    same molecular formula?
    a) dipolar character of ethers
    b) alcohols having resonance structures
    c) inter-molecular hydrogen bonding in ethers
    d) inter-molecular hydrogen bonding in alcohols
A

d) inter-molecular hydrogen bonding in alcohols

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q
  1. Why the boiling point of ethyl alcohol is much higher
    than that of dimethyl ether though
    both have the same molecular weight?
    a) Ether is insoluble in water
    b) Methyl groups are attached to oxygen in ether
    c) Dipole moment of ethyl alcohol is less
    d) Ethyl alcohol shows hydrogen bonding
A

d) Ethyl alcohol shows hydrogen bonding

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q
  1. Which of the following has lower boiling point than
    dimethyl ether?
    a) Pentane
    b) Propane
    c) Tetrahydrofuran
    d) n-butanol
A

b) Propane

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q
  1. Which of the following product is formed, when ether is
    exposed to air?
    a) Oxide
    b) Alkanes
    c) Alkenes
    d) Peroxide of diethyl ether
A

d) Peroxide of diethyl ether

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q
  1. An organic compound A reacts with sodium metal and
    forms B. On heating with conc. H2SO4, A gives diethyl
    ether. What are A and B?
    a) C2H5OH and C2H5ONa
    b) C3H7OH and CH3ONa
    c) CH3OH and CH3ONa
    d) C4H9OH and C4H9ONa
A

d) C4H9OH and C4H9ONa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q
  1. What is the smell of the diethyl ether?
    a) Vinegar
    b) Sweet smell
    c) Rotten egg
    d) Fish like smell
A

b) Sweet smell

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q
  1. Which of the following statements about ethers is
    incorrect?
    a) Ethers are flammable
    b) Ethers form peroxides by free radical oxidation
    c) Ethers are widely used as extraction solvents
    d) An ether oxygen can only be found within an acyclic
    carbon chain
A

d) An ether oxygen can only be found within an acyclic
carbon chain

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q
  1. How many hydroxyl groups are present in diols?
    a) One
    b) Two
    c) Three
    d) Four
A

b) Two

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q
  1. Which of the following Is the correct reason for cyclic
    ether are miscible in water?
    a) Planer structure
    b) Larger size
    c) Molecular weight
    d) Hydrogen bonding
A

d) Hydrogen bonding

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q
  1. What is the general formula for dihydric alcohol?
    a) (CH2)n(OH)2 where n = 2,3…etc
    b) (CH2)n(OH)2 where n = 1,2,4… etc
    c) CnH2n+1OH where n = 1, 2 …etc
    d) (CH2)n(OH)3 where n = 3, 4, 5 …etc
A

b) (CH2)n(OH)2 where n = 1,2,4… etc

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q
  1. Which of the following is not the example of dihydric
    alcohol?
    a) Glycerin
    b) Parahydroxyphenol
    c) Resorcinol
    d) Catechol
A

a) Glycerin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q
  1. Which Biomolecules simply refers as “Staff of life” in the
    given macromolecules?
    a) Protein
    b) Lipids
    c) Carbohydrate
    d) Vitamins
A

c) Carbohydrate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q
  1. Which type of product is formed when Cold dilute
    alkaline solution of Bayer’s reagent reacts with alkene?
    a) Syn-diol
    b) Anti-diol
    c) syn- and anti-geometry will not be there in diol
    d) Trans diol
A

a) Syn-diol

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q
  1. Majority of the monosaccharides found in the human
    body are of which type stereoisomer?
    a) L-type
    b) D-type
    c) neutral
    d) racemic mixture
A

b) D-type

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q
  1. Which compound is used with 1,2- dibromoethane for
    the formation of glycol?
    a) Na2CO3
    b) NaHCO3
    c) NaOH
    d) CH3COONa
A

a) Na2CO3

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q
  1. Which of the following statement is not true about
    preparation of alcohol?
    a) French chemist Charles-Adolphe Wurtz (1817–1884)
    first prepared ethylene glycol in 1856
    b) First synthesis of glycol was from “ethylene iodide”
    (C2H4I2) with silver acetate and then hydrolyzed the
    resultant “ethylene diacetate” with potassium hydroxide
    c) It was synthesized from ethylene dichloride in Germany
    and used as a substitute for glycerol in the explosives
    industry
    d) There is no biological process for the synthesis of glycol
A

d) There is no biological process for the synthesis of glycol

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q
  1. How can we detect the presence of resorcinol in the
    solution?
    a) Ceric ammonium nitrate test
    b) Lucas test
    c) Phthalic acid test
    d) Remini’s test
A

c) Phthalic acid test

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q
  1. Which is the simplest carbohydrate?
    a) Dihydroxy acetone
    b) Glycerldehyde
    c) Glucose
    d) Gulose
A

b) Glycerldehyde

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q
  1. In carbohydrates which are the main functional groups
    are present?
    a) Alcohol & Carboxyl groups
    b) Aldehyde & Ketone groups
    c) Hydroxyl groups & Hydrogen groups
    d) Carboxyl groups & Others
A

a) Alcohol & Carboxyl groups

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q
  1. Which of the following is true about Turanose?
    a) Reducing disaccharides of glucose and fructose
    b) Non-reducing disaccharide
    c) 7-methyl sugar
    d) a deoxy sugar
A

a) Reducing disaccharides of glucose and fructose

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q
  1. Which of the following is the examples of Epimers?
    a) Glucose & Galactose
    b) Glucose & Ribose
    c) Mannose & Glucose
    d) fructose and glucose
A

a) Glucose & Galactose

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q
  1. Which of the following is not a disaccharide?
    a) Sucrose
    b) Maltose
    c) Lactose
    d) Galactose
A

d) Galactose

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q
  1. Which of the following will not be reactive towards
    seliwanoff reagent?
    a) Maltose
    b) Inulin
    c) Fructose
    d) Sucrose
A

a) Maltose

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q
  1. Which of the following carbohydrate do not have any
    essential nutritional value?
    a) Sucrose
    b) Cellulose
    c) Dextrin
    d) Glycogen
A

c) Dextrin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q
  1. Which sugars are present in Sucrose?
    a) Fructose and glucose
    b) Glucose and glucose
    c) Glucose and galatose
    d) Fructose and galatose
A

a) Fructose and glucose

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q
  1. Which catalyst is used for reaction of ethylene glycol
    with acetic acid?
    a) Amberlyst 36
    b) Hydrogen peroxide
    c) Potassium permanganate
    d) Aluminium bromide
    View Answer
A

a) Amberlyst 36

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q
  1. Which of the following is the most convenient and
    inexpensive method of formation of glycol?
    a) Hydroxylation of alkene by Bayer’s reagent
    b) From 1,2-dibromoethane
    c) Oxidation of ethylene and using Ag as catalyst
    d) Ethylene treatment with HOCl
A

a) Hydroxylation of alkene by Bayer’s reagent

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q
  1. Criegee oxidation of glycol should be performed in
    which type of medium?
    a) Hydrous
    b) Anhydrous
    c) Acidic
    d) Basic
A

b) Anhydrous

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q
  1. What happens when glycol reacts with lead
    tetraacetate?
    a) No reaction
    b) Ketones will be formed
    c) Aldehyde will not be formed
    d) Monohydric alcohols will be formed
A

b) Ketones will be formed

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q
  1. Which of the following is not a method of preparation
    of glycol?
    a) Shell’s omega method
    b) From carbon monoxide
    c) From Dimethyl oxalate
    d) From nitrogen
A

d) From nitrogen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q
  1. Which of the following statement is not true about
    criegee oxidation?
    a) The oxidative cleavage of an alpha,beta-diol using lead
    tetraacetate to give the corresponding carbonyl
    compounds
    b) It is analogous but milder than the Malaprade reaction
    c) This oxidation was discovered by Rudolf Criegee and
    coworkers and first reported in 1931
    d) Rate of reaction do not depend upon stereochemistry of
    glycol
A

d) Rate of reaction do not depend upon stereochemistry of
glycol

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q
  1. What is the intermediate form in the mechanism of the
    lead acetate and glycol?
    a) Three membered cyclic ring
    b) Four membered cyclic ring
    c) Five membered cyclic ring
A

b) Four membered cyclic ring

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q
  1. What is the name of the reaction when lead
    tetraacetate is used cleave a carbon-carbon bond in a
    glycol?
    a) Criegee oxidation
    b) Swern oxidation
    c) Baeyer-Villiger Oxidation
    d) Jones oxidation
A

a) Criegee oxidation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q
  1. What is the name of the process of formation of glycerol
    via formation of allyl chloride?
    a) Epichlorohydrine
    b) Acrolein
    c) Propylene oxide
    d) Chloroform process
A

a) Epichlorohydrine

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q
  1. Glycerol can be formed through digestion of which of
    the following?
    a) galactose
    b) fats
    c) glucose
    d) sucrose
A

b) fats

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q
  1. What happens when glycol reacts with periodic acid?
    a) No reaction
    b) Ketones will be formed
    c) Aldehyde will not be formed
    d) Monohydric alcohols will be formed
A

b) Ketones will be formed

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q
  1. Ethylene glycol on treatment with phosphorus tri
    iodide yields
    a) ethyl iodide
    b) ethylene di-iodide
    c) ethylene
    d) ethane
A

b) ethylene di-iodide

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q
  1. Fatty acids and glycerol (C3H8O3) are produced after
    hydrolysis of which of the following?
    a) amino acids
    b) fats
    c) starch
    d) cellulose
A

b) fats

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q
  1. Which of the following is not the step for the isolation of
    glycerine form spent lye?
    a) Brine Solution Preparation
    b) Saponification and salting
    c) Zone distillation
    d) Glycerin Recovery from Spent Soap Lye
A

c) Zone distillation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q
  1. Why synthetic production of glycerol is not
    commercially successful?
    a) Because process is expensive
    b) Because no marketing demands
    c) Because process is hazardous
    d) Because of the large-scale production of biodiesel from
    fats
A

c) Because process is hazardous

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q
  1. What will be the product for the reaction of catalytic
    hydrogenation of glycerol?
    a) Glycerol carbonate
    b) Epichlorohydrine
    c) Propylene glycol
    d) Ethylene glycol
A

c) Propylene glycol

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q
  1. What will be product of the reaction if lead tetraacetate
    and glycerol will react?
    a) Glycerol carbonate
    b) Ethylene glycol
    c) Formic acid
    d) Formaldehyde and formic acid
A

d) Formaldehyde and formic acid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q
  1. What will be the product for when glycerol is heated
    with hydriodic acid?
    a) Glycerol carbonate
    b) Epichlorohydrine
    c) Ethylene glycol
    d) Isopropyl iodide
A

d) Isopropyl iodide

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q
  1. Primary alcohol is gently heated to produce aldehyde in
    presence of acidified solution of which of the following
    compound?
    a) hydroxide
    b) dichromate
    c) ethanol
    d) ethanal
A

b) dichromate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q
  1. What will happen when glycerol is added into acid?
    a) Esterification
    b) Alcoholysis
    c) Transesterification
    d) No reaction will occur
A

a) Esterification

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q
  1. Which Catalyst is used in Rosenmund reduction?
    a) Pd / BaSO4
    b) Zn-Hg couple
    c) LiAlH4
    d) Ni/H2
A

a) Pd / BaSO4

31
Q
  1. What will happen when glycerol is added into bromine
    water and sodium carbonate?
    a) Glycerol carbonate
    b) Dihydroxyacetone
    c) Ethylene glycol
    d) Isopropyl iodide
A

b) Dihydroxyacetone

31
Q
  1. What will happen when glycerol is added into
    dimethyloxalate?
    a) Glycerol carbonate
    b) Dihydroxyacetone
    c) Glycerol formate
    d) Glycerol oxalate
A

d) Glycerol oxalate

32
Q
  1. Catalyst SnCl2/HCl is used in which of the following
    method of synthesis of aldehyde?
    a) Stephen’s reduction
    b) Cannizzaro reaction
    c) Clemmensen’s reduction
    d) Rosenmund’s reduction
A

a) Stephen’s reduction

32
Q
  1. On heating calcium acetate and calcium formate, the
    product formed is which of the following?
    a) CH3COCH3
    b) CH3CHO
    c) HCHO+CaCO3
    d) CH3CHO+CaCO3
A

d) CH3CHO+CaCO3

33
Q
  1. In the Rosenmund’s reduction, BaSO4 taken with
    catalyst Pd acts as which of the following?
    a) Promotor
    b) Catalytic poison
    c) Cooperator
    d) Absorber
A

b) Catalytic poison

34
Q
  1. Ketones can be prepared in one step from which of the
    following process?
    a) Hydrolysis of esters
    b) Oxidation of primary alcohol
    c) Oxidation of secondary alcohol
    d) Reaction of acid halide with alcohols
A

c) Oxidation of secondary alcohol

34
Q
  1. Ketones are prepared by which of the following name
    reaction?
    a) Clemmensen’s reduction
    b) Cannizzaro reaction
    c) Rosenmund’s reduction
    d) Oppenaur’s oxidation
A

d) Oppenaur’s oxidation

34
Q
  1. Which of the following gases when passed through
    warm dilute solution of H2SO4 in presence of HgSO4 gives
    acetaldehyde?
    a) CH4
    b) C2H6
    c) C2H4
    d) C2H2
A

d) C2H2

35
Q
  1. O3 reacts with CH2=CH2 to form ozonide. On hydrolysis
    it forms which of the following?
    a) Ethylene oxide
    b) HCHO
    c) Ethylene glycol
    d) Ethyl alcohol
A

b) HCHO

35
Q
  1. Acetophenone is prepared from which reaction?
    a) Rosenmund reaction
    b) Sandmayer reaction
    c) Wurtz reaction
    d) Friedel craft reaction
A

d) Friedel craft reaction

36
Q
  1. Which one of the following compounds is prepared in
    the laboratory from benzene by a substitution reaction?
    a) Glyoxal
    b) Cyclohexane
    c) Acetophenone
    d) Hexabromo cyclohexane
A

c) Acetophenone

37
Q
  1. Which of the following compound gives a ketone with
    Grignard reagent?
    a) Formaldehyde
    b) Ethyl alcohol
    c) Methyl cyanide
    d) Methyl iodide
A

c) Methyl cyanide

38
Q
  1. Dry heating of calcium acetate gives which of the
    following?
    a) Acetaldehyde
    b) Ethane
    c) Acetic acid
    d) Acetone
A

d) Acetone

39
Q
  1. Isopropyl alcohol on oxidation gives which of the
    following?
    a) Acetone
    b) Acetaldehyde
    c) Ether
    d) Ethylene
A

a) Acetone

40
Q
  1. Propyne on hydrolysis in presence of HCl and
    HgSO4gives which of the following?
    a) Acetaldehyde
    b) Acetone
    c) Formaldehyde
    d) Acetophenone
A

b) Acetone

41
Q
  1. The oxidation of toluene to benzaldehyde by chromyl
    chloride is called as which of the following?
    a) Cannizzaro reaction
    b) Wurtz reaction
    c) Etard reaction
    d) Reimer-Tiemann reaction
A

c) Etard reaction

41
Q
  1. Benzaldehyde can be prepared by oxidation of toluene
    by which of the following reagent?
    a) Acidic KMnO4
    b) K2Cr2O7
    c) CrO2Cl2
    d) basic KMnO4
A

c) CrO2Cl2

42
Q
  1. The oxidation of benzyl chloride with lead nitrate gives
    which of the following compound?
    a) Benzaldehyde
    b) Benzyl alcohol
    c) Benzoic acid
    d) p-chlorobenzaldehyde
A

a) Benzaldehyde

43
Q
  1. Which of the following is the commercial method of
    preparation of benzaldehyde?
    a) Oxidation of toluene
    b) Oxidation of benzyl chloride
    c) Oxidation of benzyl alcohol
    d) Etard reaction
A

c) Oxidation of benzyl alcohol

44
Q
  1. Which of the following is the not a method of
    preparation of benzaldehyde?
    a) Gattermann Koch synthesis
    b) Etards Reaction
    c)Stephan’s reaction
    d) Oxidation of secondary alcohol
A

d) Oxidation of secondary alcohol

44
Q
  1. Partial reduction of phenyl cyanide with stannous
    chloride and passing dry HCl gas in ether solution followed
    by hydrolysis of the aldimine stannic chloride with water
    to form benzaldehyde is called as which of the following
    method of preparation of benzaldehyde?
    a) Gattermann Koch synthesis
    b) Etards reaction
    c) Stephan’s reaction
    d) Gattermann reaction
A

c) Stephan’s reaction

45
Q
  1. What reagents will be used in the preparation of
    benzaldehyde via Gattermann Koch synthesis?
    a) Carbon dioxide and HCl
    b) Carbon monoxide and HCl
    c) Oxygen and H2SO4
    d) Carbon monoxide and H2SO4
A

b) Carbon monoxide and HCl

45
Q
  1. Formation of aromatic ketone forms from benzene by
    CH3COCl?
    a) Friedal craft alkylation
    b) Friedal craft dealkylation
    c) Friedal craft acylation
    d) Friedal craft hydroxyalkylation
A

c) Friedal craft acylation

45
Q
  1. Which of the following cannot be used in formation of
    benzaldehyde by Grignard reagent?
    a) HCN
    b) Carbon monoxide
    c) Ethyl format
    d) HNC
A

c) Ethyl format

46
Q
  1. Ozonolysis of styrene will lead leads to formation of
    benzaldehyde along which compound?
    a) O2
    b) H2O2
    c) HCHO
    d) H2O2 and HCHO
A

c) HCHO

47
Q
  1. Aromatic ketones were synthesized from aromatic
    compounds via liquid‐phase oxidation at 60 °C and 1 atm
    over vanadium‐containing which catalyst?
    a) MCM-41
    b) MCM-48
    c) ZSM-5
    d) ZK-5
A

a) MCM-41

47
Q
A
47
Q
  1. What is the laboratory method for the formation of
    benzaldehyde?
    a) Gattermann Koch synthesis
    b) Etards reaction
    c) Stephan’s reaction
    d) Oxidation of benzyl chloride
A

d) Oxidation of benzyl chloride

47
Q
  1. What will be the product for the given reaction?
    a) Propanone
    b) Acetophenone
    c) Diphenylmethanone
    d) Aliphatic and aromatic
A

d) Aliphatic and aromatic

48
Q
  1. Which of the following cannot be used as reactant in
    preparation of aromatic ketones from diazonium salt?
    a) formaldoxime
    b) Acetaldoxime
    c) propionaldoxime
    d) Terpernes
A

d) Terpernes

49
Q
  1. Aldehydes have which type of smell?
    a) Fish like smell
    b) Bitter almond smell
    c) Pungent smell
    d) Rotten egg like smell
A

c) Pungent smell

50
Q
  1. What is the name of the process in which aldehyde get
    oxidise in presence of air?
    a) Calcination
    b) Autoxidation
    c) Cannizzaro reaction
    d) Baeyer villiger oxidation
A

b) Autoxidation

51
Q
  1. Which of the following aldehyde shows oligomerization?
    a) Acetaldehyde
    b) Propanal
    c) Butanal
    d) Benzaldehyde
A

a) Acetaldehyde

51
Q
  1. What will be the product if we add water to the
    aldehyde?
    a) Alcohols
    b) Epoxides
    c) Geminal diols
    d) Peroxides
A

c) Geminal diols

52
Q
  1. In Infrared spectroscopy, at what wave number will
    band of CO bond of aldehyde will occur?
    a) 1500 cm-^1
    b) 1495 cm^-1
    c) 1965 cm^-1
    d) 1700 cm^-1
A

d) 1700 cm^-1

52
Q
  1. What is the chemical shift of formyl hydrogen in
    aldehyde?
    a) 6
    b) 7
    c) 8
    d) 9
A

d) 9

52
Q
  1. Which of the following aldehyde is present as gas?
    a) Acetaldehyde
    b) Formaldehyde
    c) Butyraldehyde
    d) Benzaldehyde
A

b) Formaldehyde

53
Q
  1. Which of the following compound has more boiling
    point than aldehyde?
    a) Alcohol
    b) Alkanes
    c) Ketones
    d) Ether
A

a) Alcohol

54
Q
  1. Which of the following compound has more boiling
    point than ketones?
    a) Alcohol
    b) Alkanes
    c) Aldehyde
    d) Ether
A

a) Alcohol

54
Q
  1. Which of the following is the characteristic smell of
    benzaldehyde?
    a) Fish like smell
    b) Bitter almond like
    c) Pungent smell
    d) Rotten egg like smell
A

b) Bitter almond like

55
Q
  1. Which of the following aldehyde is most soluble in
    water?
    a) Acetaldehyde
    b) Formaldehyde
    c) Butyraldehyde
    d) Benzaldehyde
A

b) Formaldehyde

56
Q
  1. Which of the following has highest boiling point?
    a) 2-hexanone
    b) 2-pentanone
    c) butanoic acid
    d) 3-methyl-2-butanone
A

d) 3-methyl-2-butanone

56
Q
  1. Which of the ketones are used in nail paint removers?
    a) Cyclopropenone
    b) Isopropyl acetone
    c) butanone
    d) Methyl ethyl ketone
A

b) Isopropyl acetone

57
Q
  1. Which of the following is more volatile?
    a) Carboxylic acid
    b) Alcohol
    c) Ketones
    d) Aldehyde
A

c) Ketones

58
Q
  1. Why ketones are volatile in nature?
    a) Due to molecular weight
    b) Hydrogen bonding
    c) Neither hydrogen bond donor nor acceptor
    d) Weak bonding
A

c) Neither hydrogen bond donor nor acceptor

59
Q
  1. For C6H5CHO which of the following is incorrect?
    a) On oxidation it yields benzoic acid
    b) It is used in perfumery
    c) It is an aromatic aldehyde
    d) On reduction yields phenol
A

d) On reduction yields phenol

59
Q
  1. Why ketones are used as solvent?
    a) Due to molecular weight
    b) Hydrogen bonding
    c) Neither hydrogen bond donor nor acceptor
    d) Weak bonding
A

c) Neither hydrogen bond donor nor acceptor

60
Q
  1. Which of the following is the used as solvent in gums,
    resins, nitrocellulose?
    a) Cyclopropenone
    b) Isopropyl acetone
    c) butanone
    d) Methyl ethyl ketone
A

c) butanone

60
Q
  1. Which of the following is also known as model cement?
    a) Cyclopropenone
    b) butanone
    c) Isopropyl acetone
    d) Methyl ethyl ketone
A

c) Isopropyl acetone

61
Q
  1. Reduction of Aldehydes to hydrocarbon take place in
    the presence of which of the following?
    a) Zn amalgam and HCl acid
    b) Pd/BaSO4
    c) Anhydrous AlCl3
    d) Ni/Pt
A

a) Zn amalgam and HCl acid

62
Q
  1. Which of the following is a toxic ketone?
    a) butanone
    b) Acetone
    c) Methyl ethyl ether
    d) Methyl vinyl ketone
A

d) Methyl vinyl ketone

62
Q
  1. Which of the following cannot be used for the
    characterisation of ketone by spectroscopy?
    a) 1H NMR
    b) Infra-red spectrum
    c) 13^C NMR
    d) UV spectroscopy
A

a) 1H NMR

63
Q
  1. During a reaction of Tollens test, the formation of mirror
    inside the tube is due to which of the following?
    a) silver ions
    b) silver atoms
    c) silver compounds
    d) silver nitrate
A

b) silver atoms

64
Q
  1. Which of the following compound will undergo self
    aldol condensation in the presence of cold dilute alkali?
    a) C6H5CHO
    b) CH3CH2CHO
    c) CH≡C−CHO
    d) CH2=CH−CHO
A

b) CH3CH2CHO

65
Q
  1. Acetaldehyde cannot show which of the following test?
    a) Iodoform test
    b) Lucas test
    c) Benedict’s test
    d) Tollen’s test
A

b) Lucas test

65
Q
  1. Which of the following will not undergo aldol
    condensation?
    a) Acetaldehyde
    b) Propanaldehyde
    c) Benzaldehyde
    d) Trideuteroacetaldehyde
A

c) Benzaldehyde

66
Q
  1. What will be the product if aldehyde reacts with NaOH?
    a) Benzyl alcohol
    b) Benzoic alcohol
    c) Hydrobenzamide
    d) Cinnamic acid
A

a) Benzyl alcohol

67
Q
  1. Which of the following reaction is not shown by
    ketones?
    a) reaction with HCN
    b) reaction with NaHSO3
    c) reaction with 2,4-Dinitrophenyl hydrazine
    d) reaction with Fehling solution
A

d) reaction with Fehling solution

67
Q
  1. To distinguish between formaldehyde and
    acetaldehyde, we require which of the following reagent?
    a) Tollen’s reagent
    b) Fehling’s solution
    c) Schiff’s reagent
    d) Caustic soda solution
A

d) Caustic soda solution

68
Q
  1. Acetaldehyde reacts with C2H5MgCl the final product is
    which of the following?
    a) An aldehyde
    b) A ketone
    c) A primary alcohol
    d) A secondary alcohol
A

d) A secondary alcohol

68
Q
  1. If formaldehyde and KOH are heated, then we get which
    of the following compound?
    a) Acetylene
    b) Methane
    c) Methyl alcohol
    d) Ethyl formate
A

c) Methyl alcohol

69
Q
  1. Which of the following has most acidic hydrogen?
    a) 3-Hexaone
    b) 2,4- Hexanedione
    c) 2, 3-Hexanedione
    d) 2, 5-Hexanedione
A

b) 2,4- Hexanedione

70
Q
  1. Acetone reacts with HCN to form a cyanohydrin. It is an
    example of which type of reaction?
    a) electrophilic addition
    b) electrophilic substitution
    c) nucleophilic addition
    d) nucleophilic substitution
A

c) nucleophilic addition

71
Q
  1. Which of the following will fail to react with potassium
    dichromate and dilute sulphuric acid?
    a) Ethyl alcohol (ethanol)
    b) Acetaldehyde (ethanal)
    c) Secondary propyl alcohol (2-propanol)
    d) Acetone (propanone)
A

d) Acetone (propanone)

72
Q
  1. The product(s) obtained via oxymercuration
    (HgSO4+H2SO4) of 1-butyne would be what?
    a) CH3CH2COCH3
    b) CH3CH2CH2CHO
    c) CH3CH2CHO + HCHO
    d) CH3CH2COOH + HCOOH
A

a) CH3CH2COCH3

72
Q
  1. Which of the following statements regarding chemical
    properties of acetophenone are wrong?
    I. It is reduced to methyl phenyl carbinol by sodium and
    ethanol
    II. It is oxidised to benzoic acid with acidified KMnO4
    III. It does not undergo iodoform electrophilic substitution
    like nitration at meta position
    IV. It does not undergo iodoform reaction with iodine and
    alkali
    a) I and II
    b) II and IV
    c) III and IV
    d) I and III
A

c) III and IV

72
Q
  1. Which of the following reactions give benzophenone?
    a) 2C6H6 + CCl4 + AlCl3 + H2O→
    b) C6H6 + C6H5COCl + AlCl3→
    c) o−CH3C6H4COC6H5 + Heat→
    d) o−HOOC−C6H4−COC6H5 + Cu260oC→
A

b) C6H6 + C6H5COCl + AlCl3→

73
Q
  1. Benzophenone does not react with which of the
    following compound?
    a) RNH2
    b) SO3
    c) NaOH
    d) Na2CO3
A

d) Na2CO3

73
Q
  1. The conversion of acetophenone to acetanilide is best
    accomplished by using which reaction?
    a) Backmann rearrangement
    b) Curtius rearrangement
    c) Lossen rearrangement
    d) Hofmann rearrangement
A

a) Backmann rearrangement

73
Q
  1. What type of reaction takes place upon treatment of a
    ketone with HCN to form a cyanohydrin?
    a) Nucleophilic addition
    b) Nucleophilic substitution
    c) Electrophilic addition
    d) Electrophilic substitution
A

a) Nucleophilic addition

ChemTech (Organic Chem) (11 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions