Chemistry Mcqs – (Science) MCQs Latest For FPSC, PPSC, NTS, KPPSC, SPSC & Other Tests

Chemistry Mcqs – (Science) MCQs Latest For FPSC, PPSC, NTS, KPPSC, SPSC & Other Tests

Chemistry Mcqs - (Science) MCQs Latest For FPSC, PPSC, NTS, KPPSC, SPSC & Other Tests
Chemistry Mcqs

Chemistry Mcqs “. Tab this page to check “Latest Chemistry MCQs” for the preparation of competitive mcqs, FPSC mcqs, PPSC mcqs, SPSC mcqs, KPPSC mcqs, AJKPSC mcqs, BPSC mcqs, NTS mcqs, PTS mcqs, OTS mcqs, Atomic Energy mcqs, Pak Army mcqs, Pak Navy mcqs, CTS mcqs, ETEA mcqs and others. The most occurred mcqs of Chemistry in past papers. Past papers of Chemistry mcqs. Past papers of Chemistry MCQs. Chemistry Mcqs are the necessary part of any competitive / job related exams. The Chemistry mcqs having specific numbers in any written test. It is therefore everyone have to learn / remember the related Chemistry mcqs. The Important series of Chemistry Mcqs are given below:

Which of the following is an example of liquid in gas solution?

A. Paints
B. Dust particles in smoke
C. Opals
D. Fog

Which of the following are the conditions of colligative properties_______________?

A. Non-volatile solute
B. Non-electrolye solute
C. Dilute solution
D. All of the above

When common salt is dissolved in water ?

A. Boiling point of water remains same
B. Boiling point of water increase
C. Boiling point of water decrease
D. None of the above

Homogeneous mixture of two or more than two compounds is called__________________?

A. solution
B. radical
C. compound
D. ion

Solution with maximum concentration of solute at given temperature is called________________?

A. unsaturated solution
B. Super saturated solution
C. saturated solution
D. dilute solution

Number of moles in 1 kg of solvent is called_________________?

A. molarity
B. normality
C. molality
D. mole fraction

In partially miscible liquids the two layers are___________________?

A. saturated solutions of each liquid
B. normal solution of each liquid
C. unsaturated solutions of each liquid
D. no layer formation takes place

The relative lowering of vapour pressure is_____________________?

A. equal to the mole fraction of solute
B. equal to the mole fraction of solvent
C. directly proportional to the mole fraction of solute
D. both B & C

Mixtures which distill over without change in composition called___________________?

A. amphoteric mixture
B. azeotropic mixture
C. zeotropic mixture
D. ideal solution

Solubility of KCIO3 gives__________________?

A. discontinuous and falling solubility curve
B. continuous and falling solubility curve
C. continuous and rising solubility curve
D. discontinuous and rising solubility curve

Boiling point elevations can be measured by__________________?

A. Linds method
B. Landsbergers method
C. Beckmanns method
D. none of the above

The compounds in which water molecules are added are called_______________?

A. double salts
B. Hydrated ions
C. hydrates
D. complexes

Solution of Na2SO4 will be_________________?

A. acidic
B. basic
C. neutral
D. cannot be presicted without data

1 molar solution of glucose in water contains weight of glucose________________?

A. 180g/dm3
B. 190g/dm3
C. 170g/dm3
D. 195g/dm3

Water of crystallization can be removed by________________?

A. evaporation
B. heating
C. drying
D. All of the above

Which one of the following salt does not hydrolyzed________________?

A. Na2SO4
B. CuSO4
C. AlCl3
D. NH4Cl

Which of the following unit of concentration is independent of temperature ?

A. Mole fraction
B. Molality
C. Molarity
D. all

The molal boiling point constant is the ration of the elevation of boiling point to____________________?

A. More fraction of solvent
B. Molality
C. Molarity
D. Mole fraction of solute

Which has the minimum freezing point ?

A. One molal KCI solution
B. One Molal NaCI
C. One molal CaCI2
D. One molal urea solution

Which of the following substance do not show continuous solubility curve ?

A. K2Cr2O7
B. Na2SO4. 10H2O
C. KCIO4
D. PbCl2

Chemistry Mcqs

Every sample of matter with uniform properties and fixed composition is called_________________?

A. solvent
B. solute
C. solution
D. phase

The component of solution which is in smaller amount is called_________________?

A. phase
B. solute
C. solvent
D. ion

10ml of alcohol dissolve in 90ml of water unit of concentration used is________________?

A. % w/v
B. % w/w
C. % v/v
D. % v/w

58.5g of of NaCl per 1 dm3 of solution of NaCl in water the concentration of solution will be___________________?

A. 1 m
B. 0.1 M
C. 1 M
D. 0.1 N

If the volume of solution is equal to sum of volumes of its all components then the solution_____________?

A. will be an ideal solution
B. will show deviations from Raoults law
C. will be non-ideal solution
D. both b & c

The solution which distils over with change in composition________________?

A. azeotropic solution
B. zeotropic solution
C. ideal solution
D. non-ideal solution

Concentration of solute molecule when they are in equilibrium with solid substance at particular temperature is called________________?

A. unsaturated solution
B. solubility
C. saturated solution
D. super saturated solution

The determination of correct molecular weight from Raoults law is applicable to_________________?

A. a non-electrolyte & non volatile solute in concentrated solute
B. a non-electrolyte & non volatile solute in concentrated solution
C. a volatile solute in dilute solution
D. non volatile solute in a dilute solution

Beckmanns apparatus is used to measure_______________?

A. lowering of vapour pressure
B. depression in freezing point
C. boiling point elevation
D. lowering of osmotic pressure

Hydration is a process in which_________________?

A. Ions are surrounded by solvent molecules
B. Molecules are surrounded by solvent molecules
C. Both ions and molecules are surrounded by solvent molecules
D. Both ions and molecules are surrounded by water molecules

ppm means________________?

A. parts of solvent in 1000 parts of solute
B. parts of solute in 1000 parts of solvent
C. parts of solute in one million parts of solution
D. parts of solvent in one million parts of solute

The relative lowering of vapour pressure is directly proportional to molality if the solution is________________?

A. saturated solution
B. dilute
C. concentrated
D. all of the above

If electricity is passed through CuSO4 solution by using Pt electrode then which of the following possible change occurs ?

A. Cu is deposited at anode
B. Colour of the solution becomes fade
C. H2 is deposited at cathode
D. All are possible

Which has maximum oxidation number ?

A. Cr
B. N
C. S
D. Mn

In an electrolytic cell current flows ?

A. From cathode to anode inside the cell
B. From anode to cathode outside the cell
C. From cathode to anode in outer circuit
D. both B & C

In a galvanic cell________________?

A. Chemical energy is converted into electricity
B. Electrical energy is converted into heat
C. Electrical energy is converted into chemical energy
D. Chemical energy is converted into heat

Molten NaCl conducts electricity due to the presence of_______________?

A. Free molecules
B. Free electrons
C. Free ions
D. Atoms of Na and Cl

Electricity in voltaic cell is produced due to_________________?

A. oxidation
B. neutralization
C. reduction
D. both B & C

In electrolytic cell electricity carries________________?

A. neutralization
B. non-wpontaneous reaction
C. spontaneous reaction
D. all of above

In Galvanic cell electrons flow from anode to cathode through__________________?

A. external electric circuit
B. movement of ions
C. salt bridge
D. all of the above

For the measurement of standard electrode potential Zn is dipped in________________?

A. 1.5 M ZnSO4 solution
B. 1 M ZnSO4 solution
C. 1 M ZnO solution
D. 0.1 M ZnSO4 solution

Zn(s)/Zn+2(aq) 1M | | Cu+2(aq) 1M/Cu(s) is representation of reaction in______________?

A. Downs cell
B. Daniel cell
C. Voltaic cell
D. Nelsons cell

Voltaic cell can be recharged by______________?

A. by removal of solution
B. by replacing external circuit with external source of electricity
C. by addition of fresh solution
D. by heating it

H2 gas in SHE is filled at pressure of___________________?

A. 760mm of Hg
B. 780mm of Hg
C. 750mm of Hg
D. 800mm of Hg

Chemical used in salt bridge is________________?

A. KNO3
B. KCI
C. KOH
D. KBr

List of elements based on hydrogen scale is called________________?

A. groups
B. periodic table
C. periods
D. electrochemical series

In galvanic cell Zn acts as an anode so its value of standard reduction potential in comparison to coupled electrode would be________________?

A. greater
B. sum of reduction and oxidation potentials
C. lesser
D. none

Greater value of standard reduction potential smaller will be tendency______________?

A. to form positive ions
B. gain electrons
C. to form negative ions
D. all are possible

Lead accumulators are_______________?

A. primary cell
B. secondary cell
C. voltaic cell
D. both A & C

Capacity of one lead accumulator cell is___________________?

A. 3 volts
B. 2 volts
C. 1.5 volts
D. 1 volts

The strength of solution of an element whose electrode potential is to be measured is________________?

A. 1N
B. 2M
C. 1m
D. 1M

Chemistry Mcqs

Voltaic cell is a_________________?

A. reversible cell
B. irreversible cell
C. alkaline cell
D. all of the above

Percentage of sulfuric acid in lead accumulator is__________________?

A. 25%
B. 40%
C. 30%
D. 50%

The half cells are interconnected through________________?

A. electric circuit
B. salt bridge
C. wire
D. no connection exists

Which of the following element act as inert electrode________________?

A. Ag
B. Cu
C. Pt
D. None

Stronger the oxidizing agent greater is the________________?

A. Redox potential
B. Reduction potential
C. Oxidation potential
D. emf of cell

Which of the following cell is not rechargeable ?

A. Fuel cell
B. Silver oxide cell
C. Lead storage battery
D. Ni-Cd cell

Which of the following is true in the case of Zn-Cu cell ?

A. E0red of copper electrode is less than that of zinc electrode
B. The flow of electrons takes place from copper to zinc
C. Zinc acts as an anode and copper as cathode
D. All are correct

The degree of dissociation of week electrolyte increases as________________?

A. Dilution decreases
B. Pressure increases
C. Dilution increases
D. None

In electrolytic solution conductance of electricity is due to _____________________?

A. metals
B. ions
C. free electrons
D. electrodes

Reaction at anode is called________________?

A. oxidation
B. redox
C. reduction
D. decomposition

Decrease in oxidation number is called__________________?

A. oxidation-reduction
B. reduction
C. oxidation
D. all of above represent same entity

Right half cell contains _____________ electrode?

A. Zn
B. A1
C. Cu
D. Fe

Salt bridge transfers_______________?

A. anion
B. electrons
C. current
D. ions

E0red of an element cab be calculated by comparing it with _____________________?

A. 2M solution of HCI
B. SHE
C. 1M solution of ions of respective element
D. New electrode of same element

Potential of SHE is considered as__________________?

A. zero
B. constant
C. unity
D. multiple of 1

Electrode potential of Zn is__________________?

A. reduction
B. oxidation
C. oxidation-reduction
D. depends on the nature of the coupled electrode

The element that act as anode always have ______________ position in electrochemical cell?

A. higher
B. in middle
C. lower
D. no effect of position

Greater value of standard reduction potential greater will be tendency__________________?

A. to get reduced
B. to get oxidized
C. to accept electrons
D. both B and C

Secondary cell is_____________________?

A. rechargeable
B. electrolytic cell
C. non rechargeable
D. Daniel cell

Density of H2SO4 in lead accumulator is__________________?

A. 1.25g/cm3
B. 1.20g/cm3
C. 1.3g/cm3
D. 1.15g/cm3

In alkaline battery the anode is made up of______________________?

A. AgO2
B. Zn
C. MnO2
D. cadmium

Apparent charge on atom in molecule is___________________?

A. coordination number
B. valency
C. oxidation number
D. charge number

Chemistry Mcqs

In K2Cr2O7 the oxidation number of chromium is____________________?

A. -7
B. 6
C. 7
D. -6

The reduction potential Zn is_________________?

A. -0.55
B. -0.76
C. 0.76
D. 0.55

Coordination number of the transition element in [Pt Cl NO2 (NH3)4]2- is____________________?

A. 4
B. 6
C. 2
D. 8

The oxidation number of central metal atom in [Ni(CO)4] is_________________?

A. 2
B. 0
C. 4
D. 6

Group VIB of transition elements contains___________________?

A. Fe Ru Os
B. Zn Cd Hg
C. Cr Mo W
D. Mn Te Re

The leements in which d or f orbitals are in the process of completion are__________________?

A. inner transition elements
B. outer transition elements
C. typical transition elements
D. transition elements

The melting points and boiling points upto meddle of 3d- series ____________________?

A. increases
B. remain same
C. decreases
D. no regular trend

Pure metal__________________?

A. corrode rapidly
B. corrode slowly
C. does not corrode easily
D. none of these

The correct electronic configuration of Cr is____________________?

A. [Ar] 4s23d4
B. [Ar]4s23d4
C. [Ar]4s03d5
D. [Ar]4s13d5

The oxidation state of transition elements is usually _______________________?

A. variable
B. single
C. constant
D. infinite

Non-stoichiometric compounds of transition elements are called___________________?

A. hydrides
B. hydrates
C. binary compounds
D. interstitial compounds

The specie which donates electrons to central metal atom in coordination sphere is called____________________?

A. cation
B. anion
C. Ligand is positively charged
D. acid

Which of the following can form a chealate______________________?

A. carbonyl
B. oxalato
C. ammine
D. cyano

The compound or complex ion which has a ring in its structure__________________?

A. monodentate ligand
B. chelate
C. polydentate ligand
D. hydrate

Geometry of the complex compounds usually depends upon __________________?

A. types of hybridization in the elements of ligands
B. type of ligands
C. hybridization of central metal
D. All of above

In pig iron the concentration of C-atom is ___________________?

A. 2.0 — 4.0%
B. 2.5 — 4.5%
C. 0.12 — 0.25%
D. 0.25 — 2.5%

With impurities like P and S the open hearth furnace is lined with ?

A. Fe2O3
B. SiO2
C. FeO
D. CaO MgO

Which is sold as fertilizer ___________________?

A. Na2SiO3
B. CaSiO3
C. Ca3(PO4)2
D. MnSiO3

When an active metal like Al comes in contact with less active element like Cu then it produces__________________?

A. electrolytic cell
B. galvanic cell
C. dry cell
D. A and B

Which of the following is typical transition metal ?

A. Y
B. Sc
C. Cd
D. Co

K2 (Cu(CN)4) which one is correct___________________?

A. Potassium tetra cyano cupperate
B. Ligand is positively charged
C. Co-ordination number is 2
D. Central atom is present in avionic sphere

The location of transition elements is in between__________________?

A. chalcogens and halogens
B. s and p block elements
C. lanthanides & actinides
D. d and f block elements

Compounds attracted by applied strong magnetic field are called__________________?

A. good conductor
B. paramagnetic
C. diamagnetic
D. ferromagnetic

When light is exposed to transition element then electrons jump from lower orbitals to higher orbitals in______________________?

A. orbitals of d-subshell
B. orbitals of f-subshell
C. orbitals of p-subshell
D. both A & B

When a compound of transition element is dissolved in a solution of salt then it produces____________________?

A. double salts
B. complex ions
C. simples ions
D. strong anions

The species which donate two electron pairs in a coordination compound is called__________________?

A. mono-dentate ligand
B. ligand
C. poly-dentate ligand
D. bi-dentate ligand

The central atom along with ligands is called____________________?

A. ligand
B. coordination sphere
C. complex ion
D. complex compound

Chemistry Mcqs – (Science) MCQs Latest For FPSC, PPSC, NTS, KPPSC, SPSC & Other Tests

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