問題一覧
1
Which is not a physical property of alcohols and phenols
The hydroxyl group of an alcohol is nonpolar
2
The strongest acid among the following aromatic compound is
Ortho nitrophenol
3
With which of the compounds ethanol, sodium hydroxide and acetic anhydride, salicylic acid is interacting
Sodium hydroxide, ethanol and acetic anhydride
4
Region for qualitative identification of ethylene glycol is
Freshly precipitated Cu(OH)2
5
The hydrolysis of 4-chlorobenzyl chloride with a concentrated solution of sodium hydroxide results in
p-hydroxybenzyl alcohol
6
Which of the following alcohols forms a ketone when oxidised?
2-propanol
7
The two functional groups in α-amino acids interact with each other and form in molecular salts. It is due to them…
All of the above properties
8
Which of the following amino acids is achiral?
glycine
9
Which of the following reagent CANNOT be used for preparing alkyl chlorides from alcohols
NaCl
10
Oxidation of butanone produces
I static and propionic acids, CO2 and H2O
11
Polypropylene is obtained from a substance with formula
CH2=CH2
12
Which chain of chemical reactions is not possible?
C2H5OH—>C2H5CHO—>C2H5COOH
13
The benzine ring of benzaldehyde Substitutes at m-position to the aldehydegroup, because it has
-M and -l effect
14
The equation: C2H5OH +HCOOH —><—HCOOC2H5+ H2O expresses the process
esterification
15
How many carbon atoms in the molecule of acrylonitrile are in SP hybrid state?
One
16
When methane ,CH4, burns in excess oxygen, the products would be
CO2+ H2O
17
Which of these compounds contain an asymmetric (chiral) carbon atom
2-bromobutane
18
Region for the quality identification of starch is
Alcoholic solution of iodine
19
Which of the following carbohydrates contains molecules within an aldehyde group?
Glucose
20
A natural polymer is
The rubber
21
Which of the following assets has optical isomers?
Lactic acid
22
What is the IUPAC name for the compound CH3CH2CH2CH2CHO
Pentanal
23
Benzaldehyde is involved in substitution reactions affecting the aromatic nucleus. in which place are the substitutes oriented?
m-position
24
Polymerisation is characteristic for
Ethene
25
Oxidation of which alcohol does not produce a carbonyl compound
2,3-dimethyl-1-2-butanol
26
Which of the reagents can be used to identify glycerol?
With freshly precipitated Cu(OH)2- dark blue coloration
27
The following reaction scheme is given: 1,2-dibromoethane -> X->bromoethane->Y->ethyl acetate. Determine from the list compounds X and Y
ethenw and ethanol
28
Ethanol can be oxidised step wise. What is the first stable intermediate product when ethanol is oxidised with a mild oxidation agent?
CH3CHO
29
Which of the following compounds does not react within an ammonia solution of Ag2O
3-hexanone
30
Cellulose dissolves in
Sweitzers reagent
31
The main components of the petrol are
alkanes
32
The vigourous oxidation of which isomer of hexane does not result in a mixture of acids
3-hexene
33
In which order are the compounds arranged in order of increasing reactivity?
CH3COC2H5, CH3COCH3 , CH3CHO , HCHO
34
Salicylic acid is stronger than benzoic acid because
An intramolecular hydrogen bond is formed between the two functional groups
35
The maltose is
a disaccharide consisting of glucose residues, an intermediate in the hydrolysis of starch
36
When freshly precipitated Cu(OH)2 was added at room temperature to several test tubes with aqueous solutions of unknown substances, dark blue solution was observed in one of them. Therefore, in these tube there is an organic compound in the molecule of which there is.
Two or more hydroxyl groups
37
Compound A is involved in addition reaction with HCN. After addition of hydrogen to A, 2-butanol is obtained. Which of the following compound is A
CH3CH2COCH3
38
Adding bromine to propane H2C=CH-CH3 gives
1,2-dibromopropane
39
The compound(E)-3-methylbex-3-ene and (Z)-hept-2-ene are
Constitutional (structural) isomers
40
As a result in the reaction of polycondensation is formed
Phenol formaldehyde resin
41
The reactivity of alkyl halides decreases in the following order
RI>RBr<RCl<RF
42
State the general molecular form of the homologous series of Alkanes
CnH2n+2
43
Which halogen notably does not react with methane by the chain linking mechanism
Iodine
44
The unknown substance X in the following transition is: H2C=CH2–>X—>CH3CHO—>CH3COOH
CH3CH2OH
45
Ethanol has a lower boiling point than water because
The attraction between the molecules is weaker
46
The molecular formula of glycerol is
C3H5(OH)3
47
Which of the organic compounds shown has a chemical bond formed by overlapping sp2 and so hybrid orbitals
CH2=CH=CH2
48
Which of the listed compounds is homologue of ethanal
Methanal
49
What is substance X in the transition CH2=CH2–>X —>CH3CH2ONa
CH3CH2OH
50
Glucose and fructose may be distinguished by interaction with
Cu(OH)2
51
Positional isomerism is possible with
amino acids, ketones, alkynes
52
Optical isomerism is not characteristic of
2-amino-2-methylpropanoic acid
53
The amino acids do not interact with
Salts
54
By which of the presented processes and interactions can be distinguished formic acid from ethanoic acid
cuprum dihydroxide
55
From which compound is hexan-3-one obtained as the only organic product under the conditions of the Kucherov reaction
CH3CH2C-=CCH2CH3
56
Which of the listed substances when interacting with methylamine gives a salt?
Hydrogen bromide
57
Upon interaction of phenol with bromine is formed a mixture of
2-and 4-bromophenols
58
The chain radical halogenation of alkanes occurs under the action
Diffuse sunlight
59
Under hydrolitic conditions sucrose yields
Glucose and fructose
60
what is the common name for CH2=CHCH2Cl
allyl chloride
61
The interaction between which substances is an addition reaction
Methane and chlorine
62
The main component of the so-called ‘marsh gas’ or ‘swamp gas’ is
Methane
63
Characteristic reactions for Alkenes are
Addition
64
Hydrogen bones cannot form between molecules of
CH3CHO and CH3COCH3
65
Polymethyl methacrylate is obtained by polarisation of
CH2=C(CH3)COOCH3
66
A phenolic hydroxyl group can be identified with a dilute aqueous solution of
FeCl3
67
The polyvalent alcohols are identified with
Freshly precipitated copper (II) hydroxide
68
If an alkane contains 24 hydrogen atoms, how many carbon atoms does it have?
11
69
Hexane may be obtained in highest yield by Wurtz method from
1-chloropropane
70
Oxidation of ethylene (CH2=CH2) produces
1,2-ethanediol
71
Ethyl is formed by addition of hydrogen two
Ethanal
72
Which of the following substances does not react with freshly precipitated Cooper de hydroxide?
propanone
73
Which of the following equations shows the alcoholic fermentation of glucose under the action of the enzymes chymase
C6H12O6–>2C2H5OH + 2CO2
74
Which of the listed compounds interacts with bromine water?
Ethyn
75
Which of the following compounds is product of interaction between glucose and Fehling reagent
CH2OH(CHOH)4COOH
76
A carbonyl group is present in an all of these functional groups except
Ethers
77
Under what conditions can hydrogen atoms in the side chain of toluence be replaced by atoms of halogen elements?
Under illumination or at high temperature
78
By the help of which reagent 1-propanol and 1,2,3- propantriol may be distinguished
cooper (II) hydroxide
79
In which hydrocarbon conversation process do the final products contain a greater number of carbon atoms than the starting substances?
wurtz Synthesis
80
The colourless crystalline substance A is slightly soluble in water, it’s sublime when heated, and 2 mol of NaOH our needed for the neutralisation of 1 mol of A. Substance Ais.
Salicylic acid
81
In the molecules of α-amino acids, the groups -NH2 and -COOH are connected to
The first carbon atom
82
The molecular formula C6H12O6 corresponds to the compound
Glucose and fructose
83
The structural isomers of hexane differ in the position of the double bond. What is their number?
Three
84
Which of the following is not classified as a carbohydrate?
Glycine
85
Which one of the following will give 1-butane as the only Allen’s by heating with concentrated sulfuric acid
1-butanol
86
The mild oxidation of which alcohol does NOT give a carbonyl compound?
2,3-dimethyl1-3-pentanol
87
The acylation of benzene with propanol chloride according to Friedel-crafts reaction takes place in the presence of a catalyst
aluminium trichloride
88
How a solution containing benzene,naphthalene, phenol and aniline can be separated
The fennel is extracted after treatment with sodium hydroxide, the aniline is extracted after treatment with hydrochloric acid, and benzene and naphthalene through distillation
89
Phenols are more acidic than alcohols because
The phenoxide ion is stabilised by resonance
90
Which of the presented pairs are metamers
CH3OCH2CH2CH3 and CH3CH2OCH2CH3
91
Sucrose is a carbohydrate. The molecular formula of the compound is
C12H22O11
92
Carbonyl derivatives do not add one of the following substances
Bromine
93
When organic compounds combust in a plentiful supply of air, what are the products?
Carbon dioxide and water
94
Which of the following compounds contains an aldehyde group?
All listed compounds
95
From which substance can 2-propanol be obtained directly
CH3-CH=CH2
96
In which order are carboxylic acids arranged by increasing their acidic properties?
Propionic, acetic, benzoic, formic
97
In the interaction between substances A and B , ZnCl2 and CH3CH=CHCH3 are obtained. Substances A and B are.
Zn and CH3CH(Cl)CH(Cl)CH3
98
What are the reactants that form the compound CH3CH2COOCH2CH3
ethanol and propanoic acid
99
The reactions by which m-nitrophenol can be produced from benzene are
sulfonation, nitration, reaction with sodium hydroxide, alkali melting
100
The interaction of fats with an alkaline base in an aqueous medium during heating is used in the production of
Soaps