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