Chemistry Practice Tests 2

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Chemistry Practice Test 2

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1 / 100

Category: Chemistry Ch 11 Class 11

The rate of chemical reaction:

PMC Sample 2
Chemistry
Reaction Kinetics
Elimination Tool:

A) Increases as the reaction proceeds

B) Decrease as the reaction proceeds

C) May increase or decrease during the reaction

D) Remains constant as the reaction proceeds

2 / 100

Category: Chemistry

Stronger the oxidizing agent, higher is the:

NUMS Mock 2
Chemistry
Electrochemistry

A) Emf of cell

B) Oxidation potential

C) Reduction potential

D) Redox potential

3 / 100

Category: Chemistry Ch 5 Class 12

What is the chief ore of fluorine?

Cryolite

Fluorspar

Dolomite

Both a and b

4 / 100

Category: Chemistry Ch 15 Class 12

Which is the metal, whose elevated concentration is harmful to fish as it clogs the gills thus causing suffocation?

UHS 2012
Chemistry
Environmental Chemistry
Elimination Tool:

A) Na

B) Pb

C) Zn

D) Al

5 / 100

Category: Chemistry Ch 1 Class 11

Chemical properties of an atom depends upon number of

Electron

Neutrons

Protons

Nucleons

6 / 100

Category: Chemistry Ch 11 Class 12

The test used to distinguish among primary, secondary, and tertiary alcohols is:

NUMS 2017
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

A) 2,4 – DNPH test

B) Tollens test

C) Lucas Test

D) Fehling solution test

7 / 100

Category: Chemistry

Q.118 Which of the following will not give iodoform test?

A. Ethanol

B. 3-Pentanone

C. 2-Pentanone

D. Ethanal

8 / 100

Category: Chemistry

Which is not a meta directing group:

NUMS Mock 1
Chemistry
Fundamental Principles of Organic Chemistry

A) -NO2

B) -COOH

C) -NH2

D) -COR

9 / 100

Category: Chemistry Ch 8 Class 12

Electrophile in sulphonation of benzene is:

PMC 2020
Chemistry
Hydrocarbons
Elimination Tool:

A) HSO4-

B) H2SO4

C) SO3

D) HSO3

10 / 100

Category: Chemistry

Q.96 If increase in temperature and volume of an ideal gas is two times, then the initial pressure p charge to

A. 4P

B. 2P

C. P

D. 3P

11 / 100

Category: Chemistry Ch 3 Class 11

When gases expand, this causes:

Cooling

Heating

Remain constant

None

12 / 100

Category: Chemistry

Which of the following molecules has the largest number of shared pairs of electrons?

NUMS Mock 4
Chemistry
Chemical Bonding

A) C2H4

B) N2

C) CO2

D) NH3

13 / 100

Category: Chemistry Ch 2 Class 12

Formula of Epsom salt is:

a

b

c

d

14 / 100

Category: Chemistry

Q.100 I–I bond distance in case of gases iodine is

A. 271.5pm

B. 266.6pm

C. 4.9pm

D. 251.4ppm

15 / 100

Category: Chemistry Ch 1 Class 11

If the number of molecules of different gases are the same at S.T.P., the occupied volume will be _____.

PMC Practice 24
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

A) Greater

B) Same

C) Smaller

D) Twice

16 / 100

Category: Chemistry

Q.173 Critical temperature of ammonia is C

A. 31.14

B. 13.24

C. 132.44

D.1.11

17 / 100

Category: Chemistry Ch 10 Class 12

Ethylamine can be prepared by the action of bromine and caustic potash on:

NUMS 2017
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) Acetamide

B) Propionamide

C) Formaide

D) Methyl cyanide

18 / 100

Category: Chemistry Ch 7 Class 12

Carbonyl group is present in

Glycol

Glycerol

Dihydrid alcohol

None of these

19 / 100

Category: Chemistry Ch 15 Class 12

The unit ___ is commonly used by meteorologists

PMC Sample 3
Chemistry
Environmental Chemistry
Elimination Tool:

A) Bar

B) centibar

C) millibar

D) kilobar

20 / 100

Category: Chemistry Ch 2 Class 12

Sodium reacts with water more vigorously than lithium because it:

NTS 2010
Chemistry
s and p Block Elements
Elimination Tool:

A) Has a higher atomic weight

B) Is more electronegative

C) Is more electropositive

D) Is a metal

21 / 100

Category: Chemistry Ch 13 Class 12

Which of the following carboxylic acids is used in medicine as a local irritant?

PMC Practice 2
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Formic acid

B) Acetic acid

C) Benzoic acid

D) Amino acid

22 / 100

Category: Chemistry Ch 6 Class 11

Which theory deals with hybridization of orbitals?

VBT

MOT

VSEPR

None of these

23 / 100

Category: Chemistry Ch 15 Class 12

Which in not woody raw material

Poplar

) Hard wood

Fir

Rag

24 / 100

Category: Chemistry Ch 11 Class 11

The chemical reaction in which reactions require high amount of activation energy are generally:

NTS 2014
Chemistry
Reaction Kinetics
Elimination Tool:

A) Slow

B) First fast then slow

C) First slow then fast

D) Spontaneous

25 / 100

Category: Chemistry Ch 11 Class 12

The product formed by acid catalysed hydration of 2 – phenyl propene is:

NUMS 2018
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

A) 3 – phenyl – 2 – propanol

B) 2 – phenyl – 2 – propanol

C) 1 – phenyl – 1 – propanol

D) 1 – phenyl – 2- propanol

26 / 100

Category: Chemistry Ch 1 Class 12

Hydration energy increases with

With high charge density

Distance between nucleus and outer most electron

Size of the atom

None of these

27 / 100

Category: Chemistry Ch 1 Class 12

Transition elements have coloured compounds because:

NTS 2013
Chemistry
Periodicity in Elements
Elimination Tool:

A) Their bond energy is low

B) they easily absorb energy

C) splitting of the five degenerate d-orbitals take place

D) d-orbitals are very close to p-orbitals

28 / 100

Category: Chemistry Ch 7 Class 11

Two rocket fuels below are determined by their high performance.

N2H4(l) + O2(g) -> N2(g) + 2H2O(l) ΔH= -632 kJ

H2 (g) + ½ O2(g) -> H2O(l) ΔH = -286 kJ

If equal masses of hydrazine and hydrogen are used, which of the following has better performance?

NUMS 2019 Cancelled
Chemistry
Thermochemistry
Elimination Tool:

A) Hydrazine

B) Both have equal enthalpy of formation

C) Hydrogen gas

D) Cannot be compared

29 / 100

Category: Chemistry Ch 10 Class 11

Which of the following metals does NOT liberate hydrogen in reaction with acids?

NUMS 2019 Reconduct
Chemistry
Electrochemistry
Elimination Tool:

A) Mg

B) Pt

C) Zn

D) Ca

30 / 100

Category: Chemistry

Q.170 Which of the following is not a mixture of hydrocarbons?

A. Candle wax

B. Kerosine oil

C. Paraffin oil

D. Vegetable ghee

31 / 100

Category: Chemistry Ch 7 Class 11

Value of heat capacity of water is

4.51 J/g

4.18 J/g

4.921J/g

4.21J/g

32 / 100

Category: Chemistry Ch 5 Class 11

Which quantum number decides energy of orbitals?

Magnetic quantum number

Principal quantum number

Azimuthal quantum number

All of these

33 / 100

Category: Chemistry Ch 5 Class 11

The radii of the second orbit of the hydrogen atom calculated from Bohr’s model is:

NTS 2013
Chemistry
Atomic Structure
Elimination Tool:

A) 0.529 Å

B) 4.8 Å

C) 2.41 Å

D) 3.4 Å

34 / 100

Category: Chemistry Ch 10 Class 11

The Oxidation state of Alkali metals in any compound is?

PMC Sample 3
Chemistry
Electrochemistry
Elimination Tool:

A) 1

B) 2

C) 3

D) zero

35 / 100

Category: Chemistry

Q87 : Octet rule is followed by the central atom of _________ molecule

A. BF3

B. S02

C. SF5

D. CCl4

36 / 100

Category: Chemistry Ch 11 Class 12

Which of the following is not a physical property of ethers?

PreMedPK MDCAT Mock 3
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

A) They are usually volatile liquids

B) Show weak hydrogen bonding

C) They are highly flammable with low boiling points

D) It is poisonous and is used as a disinfectant in hospitals

37 / 100

Category: Chemistry Ch 2 Class 11

While calculating vapor pressure of a liquid in manometer, the column of mercury facing the vapors of a liquid is _____ due to pressure on surface of liquid in flask.

PMC Practice 1
Chemistry
Experimental Techniques in Chemistry
Elimination Tool:

A) Compressed

B) Depressed

C) Rises

D) Lowers

38 / 100

Category: Chemistry Ch 1 Class 12

Ionization energy decreases down the group, from top to bottom, due to:

UHS 2019
Chemistry
Periodicity in Elements
Elimination Tool:

A) Increase in atomic mass

B) Increase in shielding effect of the intervening electrons

C) Increase in proton number

D) Decrease in atomic size

39 / 100

Category: Chemistry Ch 4 Class 11

Vapor pressure depends on

Size of the container used to collect the gas

Current atmospheric pressure

Temperature of the liquid

d) Kind of gas that is being collected

40 / 100

Category: Chemistry Ch 8 Class 11

Le-Chatelier Principle is about

PMC Sample 3
Chemistry
Chemical Equilibrium
Elimination Tool:

A) Reaction Mixture

B) Reactants

C) Equilibrium Mixture

D) Products

41 / 100

Category: Chemistry Ch 4 Class 11

A fixed mass of an ideal gas is contained in a cylinder at constant temperature. Now, the pressure of the gas is decreased.

What happened to the molecules of gas?

PMC Practice 1
Physics
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) Their mean square speed decreases

B) Number of collision between molecules and walls of container decreased

C) The force of attraction between them increase

D) Their size decreases

42 / 100

Category: Chemistry

Q.110 When acetylene is passed through the ammonical solution of copper chloride, the precipitate formed is of ____________ colour

A. White

B. Reddish brown

C. Green

D. Yellow

43 / 100

Category: Chemistry Ch 8 Class 12

In which of the following C-C bond length is the minimum?

Alkane

Alkene

Benzene

Same length in all

44 / 100

Category: Chemistry Ch 2 Class 11

Which of the following can ba employed instead of filter papers?

Gooch Crucible

Sintered Glass Crucible

Both a and b

None of these

45 / 100

Category: Chemistry Ch 6 Class 12

What is not true about transition metals?

They can make colored complexes

They have only one valency

They can be used as a catalyst d)

They are d block elements

46 / 100

Category: Chemistry Ch 11 Class 11

A certain chemical reaction follows the
following rate law:

Rate =K [A] [B]2 The order of reaction is:

NTS 2011
Chemistry
Reaction Kinetics
Elimination Tool:

A) 1

B) 2

C) 3

D) 4

47 / 100

Category: Chemistry

Q.101 The maximum charge to mass ratio for those canal rays when ______ gas is used in discharge tube

A. He

B. H2

C. O2

D. N2

48 / 100

Category: Chemistry Ch 13 Class 12

High molecular mass organic compounds, upon hydrolysis yield amino acids are called _______.

PMC Sample 3
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Carbohydrates

B) Lipids

C) Proteins

D) DNA

49 / 100

Category: Chemistry Ch 1 Class 12

The false statement about lithium is:

NTS 2013
Chemistry
Periodicity in Elements
Elimination Tool:

A) It is softer than other alkali metals

B) It is least reactive

C) It possesses higher melting and boiling points

D) It forms chloride which is soluble in alcohol

50 / 100

Category: Chemistry Ch 14 Class 12

Which of the following is not a part of the human diet?

Glucose

Sucrose

Fructose

Cellulose

51 / 100

Category: Chemistry Ch 14 Class 12

Activator of phosphatase enzyme is _________.

PMC Practice 3
Chemistry
Macromolecules
Elimination Tool:

A) Mn2+

B) Mg2+

C) Zn2+

D) None of these options is correct

52 / 100

Category: Chemistry Ch 3 Class 11

Statement of Graham’s Law is

The rate of diffusion is directly proportional to the square root of its density

The rate of diffusion is inversely proportional to the square of its density

The rate of diffusion is inversely proportional to its density.

The rate of diffusion is inversely proportional to the square root of its density

53 / 100

Category: Chemistry Ch 9 Class 12

The carbon number of gasoline is:

NTS 2019
Chemistry
Hydrocarbons
Elimination Tool:

A) C5 – C6

B) C6 – C7

C) C5 – C10

D) C12 – C15

54 / 100

Category: Chemistry Ch 12 Class 12

Identification tests for functional groups of organic compounds are associated with specific observations. Tollen’s reagent is an ammoniacal silver nitrate solution, which is used for the identification of a functional group X with an observation O. Identify X and O.

PreMedPK MDCAT Mock 2
Chemistry
Aldehydes and Ketones
Elimination Tool:

A) X = Aldehyde O = Silver mirror

B) X = Ketone, O = grey precipitate

C) X = Ketone, O = Silver mirror

D) X = Aldehyde O = Red precipitate

55 / 100

Category: Chemistry Ch 15 Class 12

In Paper industry, sodium sulphite is buffered with

Sodium carbonate

Sodium hydroxide

Sodium acetate

Both a and b

56 / 100

Category: Chemistry Ch 8 Class 11

If the ratio of initial concentration of the reagents is greater than the Kc then:

NTS 2011
Chemistry
Chemical Equilibrium
Elimination Tool:

A) The reaction will shift towards the reverse direction

B) More quantity of products is obtained

C) The ratio increases to the value of Kc

D) Equilibrium has been attained

57 / 100

Category: Chemistry

Q.5 The smallest part of the crystal lattice has all the properties of the entire Crystals, this is called

A. unit

B. unit cell

C. unit crystal

D. all of these

58 / 100

Category: Chemistry

Which derivative of benzene shows maximum reactivity in electrophilic substitution reactions?

NUMS Mock 1
Chemistry
Hydrocarbons

A) Benzoic acid

B) Methyl benzene

C) Benzaldehyde

D) Nitrobenzene

59 / 100

Category: Chemistry Ch 9 Class 12

Friedel craft’s reaction gives?

Benzene

Nitrobenzene

Toluene

Alkene

60 / 100

Category: Chemistry Ch 1 Class 11

How many molecules are there in 2.1 moles of CO₂:

PMC 2021 Tested
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

A) 3.49 x 10⁻²⁴

B) 2.53 x 10²⁴

C) 1.26 x 10²⁴

D) 3.79 x 10²⁴

61 / 100

Category: Chemistry Ch 13 Class 12

Which of the following is not the physical property of acetic acid?

NUMS 2017
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) It is a colorless liquid with the boiling point of 118 C

B) It is miscible with water, alcohol and ether in all proportions

C) It is used in the manufacture of pickles

D) Takes part in the metabolism of one-carbon compounds

62 / 100

Category: Chemistry Ch 2 Class 11

In a vessel, 10 g N2, 10 g H2 and 10g O2 are present. Which one will have least number of atoms?

PMC 2020
Chemistry
Stoichiometry
Elimination Tool:

A) H2

B) N2

C) O2

D) Both H2 and N2

63 / 100

Category: Chemistry Ch 1 Class 12

Boiling point of hydrides of the 4th period is larger than __________.

PMC Practice 2
Chemistry
Periodicity in Elements
Elimination Tool:

A) 5th period

B) 3rd period

C) 6th period

D) 7th period

64 / 100

Category: Chemistry Ch 15 Class 12

How many grams of micronutrients are needed by 1 acre of land?

100-1000

200-500

6 to 200

20 to 300

65 / 100

Category: Chemistry Ch 14 Class 12

Monomers of Nylon 6,6 Is/are:

Caprolactam

Adipoyl chloride

Hexamethylene diarnine

Both b and c

66 / 100

Category: Chemistry

An ester is prepared by the reaction of:

NUMS Mock 4
Chemistry
Carboxylic Acids and its Derivatives

A) Two alcohols

B) Carboxylic acid and alcohol

C) Keton and alcohol

D) Aldehyde and alcohol

67 / 100

Category: Chemistry Ch 10 Class 12

All amino acids contain the functional group:

NTS 2017
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) NH2

B) CO2

C) S2-

D) Both A and B

68 / 100

Category: Chemistry Ch 3 Class 11

Liquid crystals are used for:

Making LCD

Making thermometers

Optical Imaging

All of these

69 / 100

Category: Chemistry Ch 2 Class 12

Oxygen does not react with:

NTS 2015 DUHS and JSMU
Chemistry
s and p Block Elements
Elimination Tool:

A) P

B) Na

C) S

D) Cl

70 / 100

Category: Chemistry Ch 15 Class 12

Which one of the following polymer is called as Nylon 6,6?

UHS 2016
Chemistry
Industrial Chemistry
Elimination Tool:

A) Polyester

B) Polyvinyl chloride

C) Polyamide

D) Polyvinyl acetate

71 / 100

Category: Chemistry Ch 2 Class 11

Silver oxide decomposes when heated to silver and oxygen. If 0.5 moles of lunar caustic is heated up to 450 degrees, giving out Nitrogen dioxide and oxygen leaving silver as metal, what is the mass of the residue?

NTS 2015 SMBBMC
Chemistry
Stoichiometry
Elimination Tool:

A) 108 grams

B) 54 grams

C) 216 grams

D) 27 grams

72 / 100

Category: Chemistry

Which one of the following is used as an anesthetic?

Acetone

Halothane

Methyl alcohol

Ethyl alcohol

73 / 100

Category: Chemistry Ch 9 Class 12

Benzene when reacted with chlorine in ultraviolet rays produces:

Hexacholorocyclohexane

P-dichlorobenzene

Benzotrichloride

Benzalchloride

74 / 100

Category: Chemistry

Q.97 Due to less polarizability of Fluorine, it boils at ___________C

A..-188.1

B.188.1

C.184.4

D.184.4

75 / 100

Category: Chemistry Ch 5 Class 12

Which of the following is bleaching powder’s formula?

Ca(CI0)4

Ca2(CI0)2

Ca (CI0)2

Ca (CI20)2

76 / 100

Category: Chemistry

IUPAC name of C6H5-CH2-CH2-NH2 is:

NUMS Mock 4
Chemistry
Fundamental Principles of Organic Chemistry

A) 2-phenyl ethenamine

B) 2-phenyl ethanamine

C) 2-phenyl ethylamine

D) 3-phenyl ethanamine

77 / 100

Category: Chemistry Ch 15 Class 12

Which of the following pollutant decolorize the skin?

ETEA 2019
Chemistry
Environmental Chemistry
Elimination Tool:

A) Mercury

B) Arsenic

C) Lead

D) Cadmium

78 / 100

Category: Chemistry Ch 8 Class 11

The Haber Process is used to produce ammonia commercially according to the following equilibrium: N2(g) + 3H2g = 2NH3g + energy Which of the following conditions will produce the highest yield of ammonia?

Increase temperature and increase pressure

Increase temperature and decrease pressure

Decrease temperature and increase pressure

Decrease temperature and Decrease pressure

79 / 100

Category: Chemistry Ch 10 Class 11

In Lead-Acid battery, product formed at anode during discharging is

PbSO4

Pb

SO2

SO4

80 / 100

Category: Chemistry Ch 3 Class 11

Which of the following substances has giant covalent structure?

PMC 2020
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) Iodine crystal

B) Solid CO2

C) Silica

D) White phosphorus

81 / 100

Category: Chemistry Ch 1 Class 12

A gas that reacts with CaO and not with NaHCO3 is:

NTS 2017
Chemistry
Periodicity in Elements
Elimination Tool:

A) CO2

B)CI2

C) O2

D) N2

82 / 100

Category: Chemistry Ch 15 Class 12

The zone where moisture is removed and clay is broken down into Al203, Si02, Fe203 is

Burning zone

Cooling zone

Drying zone

Decomposition zone

83 / 100

Category: Chemistry Ch 10 Class 12

In a Beta elimination reaction, the nucleophile attacks a\an:

NUMS 2015
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) Alpha hydrogen

B) Beta hydrogen

C) Hydrogen

D) Alpha carbon

84 / 100

Category: Chemistry Ch 10 Class 12

Which of the following is true about SN2 reactions:

They follow a two-step bimolecular mechanism

they do not undergo rearrangements

Methyl and primary substrates react faster than secondary and tertiary substrates

the rate of the reactions depend on both the substrate and nucleophile concentration

85 / 100

Category: Chemistry Ch 4 Class 12

Formula of laughing gas is?

NO

NH4

N20

NO3

86 / 100

Category: Chemistry Ch 12 Class 12

Odour of formaldehyde Is:

Pungent

Aromatic

c) Pleasant

Obnoxious

87 / 100

Category: Chemistry Ch 3 Class 12

Valence electronic configuration Cu+2 is (29Cu)

NUMS 2019 Reconduct
Chemistry
d and f Block Elements
Elimination Tool:

A) 5d6

B) 3d9

C) 3d8

D) 3d7

88 / 100

Category: Chemistry Ch 5 Class 11

Which one of the following is not an isotope of hydrogen:

NUMS 2014
Chemistry
Atomic Structure
Elimination Tool:

A) Deuterium

B) Tritium

C) Ortho hydrogen

D) None of these

89 / 100

Category: Chemistry Ch 2 Class 12

Magnesium oxide is used in:

NTS 2015 DUHS and JSMU
Chemistry
s and p Block Elements
Elimination Tool:

A) as antacid

B) as reractory material

C) vulcanisation of rubber

D) all of the above

90 / 100

Category: Chemistry Ch 5 Class 11

If an electron jumps from fourth to first orbit, which of the following series will it show?

Lyman

Balmer

Pfund

None of these

91 / 100

Category: Chemistry Ch 11 Class 12

25 to 35 degree centigrade temperature is good for which of the following process?

Dow's method

Preparation of formalin

Fermentation

Methanol

92 / 100

Category: Chemistry Ch 9 Class 12

Alkenes are:

PMC Sample 3
Chemistry
Hydrocarbons
Elimination Tool:

A) Electrophiles

B) Nucleophiles

C) Both Options are correct

D) None of these options is correct

93 / 100

Category: Chemistry Ch 1 Class 12

The chemical formula of Tincal is:

NTS 2019
Chemistry
Periodicity in Elements
Elimination Tool:

C) Na2B4O7 . 10 H2O

A) Na2B2O7.10H2O

B) Na2B4O7 . H2O

D) Na2B2O5 . 10 H2O

94 / 100

Category: Chemistry Ch 15 Class 12

The biggest source of acid rain is the oxide of

UHS 2015
Chemistry
Environmental Chemistry
Elimination Tool:

A) N

B) S

C) O

D) C

95 / 100

Category: Chemistry Ch 2 Class 12

The basic character of alkali metal oxides:

Decreases down the group

Remains same

Increases down the group

None of these

96 / 100

Category: Chemistry Ch 11 Class 12

14) Ethanol and Methanol can be separated by:

Cannizzaro's reaction

Iodoform test

b) Lucas Test

Tolien's test

97 / 100

Category: Chemistry

Q.88 Most electronegative element among alkali metals

A. Li

B. Na

C. K

D. Rb

98 / 100

Category: Chemistry Ch 3 Class 12

Aluminium is in Nature

Acidic

Basic

Amphoteric

Salt

99 / 100

Category: Chemistry Ch 15 Class 12

About 80% of ammonia is used for the production of

UHS 2015
Chemistry
Environmental Chemistry
Elimination Tool:

A) Explosives

B) Fertilizers

C) Nylon

D) Polymers

100 / 100

Category: Chemistry

Q.79 Salt Bridge is used for the purpose of

A. Producing Electrons

B. Circuit Completion

C. Increasing speed electrons

D. All of these

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