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

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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:

Atom cannot be divided into simple unitstheorized by________________?

A. Bohr
B. Dalton
C. Rutherford
D. Schrodinger

The number of fundamental particles in an atom of the lightest isotope carbon are_______________?

A. 12
B. 6
C. 18
D. 20

Increase in atomic number is observed during_________________?

A. Radioactivity
B. Beta emission
C. Both A & B
D. Alpha emission

Free neutron changes into proton with the emission of__________________?

A. Electron
B. Neutrino
C. Both A & B
D. Meson

Charge of electron was measured by__________________?

A. Rutherford
B. Millikan
C. J.J Thomson
D. Perrin

Rutherford bombarded _________________ particles in discovery of nucleus?

A. Beta-rays
B. Alpha-rays
C. Gamma-rays
D. X-rays

The maximum number of orbitals present in a subshell that is represented by Azimuthal quantum number = 3 will be________________?

A. 3
B. 1
C. 5
D. 7

Pfund series are produced in the spectrum of hydrogen atom__________________?

A. when electrons jump down to 2nd- orbit
B. when electrons jump down to 4th- orbit
C. when electrons jump down to 3rd- orbit
D. when electrons jump down to 5th- orbit

Sommerfelds modification in Bohrs model is_______________?

A. Orbit is longitudinal
B. Orbit is elliptical
C. Orbit is cylindrical
D. Orbit is asymmetrical

Wavelength of electron was verified by_________________?

A. Einstein
B. Davisson and Germer
C. Moseley
D. Roentgen

Quantum number which tells the energy of electron is________________?

A. n
B. m
C. 1
D. s

_______________ can expel proteons from paraffins ?

A. Positron
B. Electron
C. Neutron
D. None of above has such capability

Centrifugal forces are balanced in atom by__________________?

A. Attractive forces
B. Electrons
C. Repulsive force
D. Neutrons

When 6d orbital is complete the entering electron goes into_________________?

A. 7s
B. 7f
C. 7p
D. 7d

Neutrons moving with an energy of 1.2 MeV are called_______________?

A. Fast neutrons
B. Moderate neutrons
C. Slow neutrons
D. All are possible

Which of the following way in used for classification of chromatography ?

A. Phase
B. Shape
C. Mechanism
D. All

Which of the following technique is used for the separation of insoluble particles from liquids ?

A. Filtration
B. Solvent extraction
C. Crystallization
D. Chromatography

Fluted filter paper is used to__________________?

A. Avoid premature crystallization
B. Filter hot solution
C. Increase the rate of filtration
D. Decrease the area

A substance having very high vapour pressure at its melting point on heating will show_______________?

A. Decomposition
B. Sublimation
C. Melting
D. Condensation

A technique of partition chromatography in which the solvent is in a pool at the bottom of container_______________?

A. Radial chromatography
B. Ascending chromatography
C. Adsorption chromatography
D. Descending chromatography

Branch of chemistry that deals with the complete qualitative and quantitative analysis of a substance is___________________?

A. Physical chemistry
B. Stoichio chemistry
C. Analytical chemistry
D. Quantum chemistry

Estimation of amounts of different components in a sample is________________?

A. Quantitative analysis
B. Stochiometery
C. Qualitative analysis
D. Physical chemistry

The solid which is left over the filter paper as a result of filtration_________________?

A. crystals
B. residue
C. Insoluble particles
D. mud

Gooch Crucibles are made up of________________?

A. fibre
B. plastic
C. porcelain
D. steel

Sintered crucible is made up of________________?

A. porcetain
B. glass
C. Plastic
D. fiber

Separation of a solid from its hot saturated solution by cooling is called__________________?

A. filtration
B. solvent extraction
C. vapourization
D. crystallization

Which of the following technique is simple and efficient to purify a substance____________________?

A. Sublimation
B. Filtration
C. Crystallization
D. Solvent extraction

95% ethanol is called_________________?

A. wood spirit
B. methylated spirit
C. rectified spirit
D. absolute alcohol

Ratio of the amount of solute in organic and aqueous solvent is________________?

A. All statements are wrong
B. Distribution co-efficient
C. Distribution in aqueous solution
D. Retardation factor

Animal charcoal adsorbs the coloured_________________?

A. impurities
B. solvents
C. crystals
D. both A & B

Crystallization does not involve_______________?

A. cooling
B. sublimation
C. heating
D. vaporization

In CCI4 I2 shows________________?

A. Blue colour
B. Purple colour
C. Red colour
D. Yellow colour

Direct conversion of solids into vapours is called ___________________?

A. crystallization
B. sublimation
C. Solvent extraction
D. vaporization

Chemistry Mcqs

Without suction pump filtration is __________________?

A. Rapid process
B. Slow process
C. Fast process
D. All are possible

The use of CaCl2 and PCl5 in the process of crystallization is as a____________________?

A. reducing agent
B. oxidizing agent
C. drying agent
D. colouring agent

In solvent extraction ether is used to separate products of organic synthesis from________________?

A. water
B. hydrochloric acid
C. iodine
D. gases

In crystallization if the solvent is inflammable then direct heating is________________?

A. depends on temperature
B. avoided
C. needed
D. crystallization does not involve heating

Rate of filtration can be increased by applying gentle suction______________?

A. Sintered crucible
B. Filter paper
C. Gooch crucible
D. All of the above

Size of filter paper is selected according to the amount of__________________?

A. amount of soluble solute
B. amount of insoluble solute
C. solution
D. Amount of solvent

The tip of funnel should touch the wall of the breaker in order to avoid____________________?

A. premature crystallization
B. splashing
C. Inconsistent flow of filtration
D. all of above

The technique used to separate components of mixture in solid phase ?

A. Filtration
B. Crystallization
C. Sublimation
D. Solvent extraction

Identification of the components of a sample is_________________?

A. Stoichiometry
B. Qualitative analysis
C. Quantitative analysis
D. Physical chemistry

Different components of a mixture have different Rf values due to________________?

A. Combination of solvents used
B. Polar solvent used
C. Their different distribution coefficients in the solvent
D. Distributive law

A process controlled by Distributive law is__________________?

A. Sublimation
B. Crystallization
C. Solvent extraction
D. Filtration

Safe and the most reliable method of drying crystals is through_________________?

A. Oven
B. Vacuum desiccators
C. Filter paper
D. None of these

Silica gel and alumina are used as __________________?

A. Mixed phase
B. Stationary phase
C. Mobile phase
D. Single phase

The solvent or mixture of solvents used for separation of compounds is called____________________?

A. Dynamic phase
B. Mobile phase
C. Stationary phase
D. Static phase

Sintered glass is a porous material used for ___________________?

A. adsorption
B. absorption
C. filtration
D. sublimation

Which is not related pair of term used in analytical techniques________________?

A. Drying desiccator
B. Sublimate sublimation
C. Filtrate residue
D. Separating funnel mother liquor

The major steps involved in complete quantitative analysis are _________________?

A. 3
B. 2
C. 4
D. 5

Selection of filter paper depends on size of particles to be________________?

A. filtered
B. decolorized
C. dried
D. decanted

Which is not a sublime material_______________?

A. Benzoic acid
B. Iodine
C. Ammonium chloride
D. Potash alum

Shaking two immiscible liquids increases_________________?

A. Volume of contact
B. Length of contact
C. Area of contact
D. all of above

The solution remaining after the formation of crystals is called ___________________?

A. Residue
B. Dilute solution
C. Mother liquor
D. both A & B

The ionization energy__________________?

A. Generally increases from left to right in a period
B. Increase from top to bottom in a group
C. Does not change in a period
D. Does not change in a group

Which type of bond is formed by overlap of p orbitals _______________?

A. Sigma
B. Pi
C. Both
D. Neither

The octet rule does not always hold for which of the following elements _________________?

A. O
B. C
C. F
D. P

Chemistry Mcqs

Which of the following is the best explanation that CO2 is non polar molecule __________________?

A. Sp hybridization
B. Dipole moment is zero
C. Linear geometry
D. None

Which one is not the absolute term of the element _________________ ?

A. Electron affinity
B. Ionization energy
C. Electro negativity
D. Atomic size

In O2 each oxygen atom is hybridized_________________?

A. sp
B. sp2
C. sp3
D. All

Measurement of the degree of polarity is___________________?

A. Ionic character
B. Electron affinity
C. Ionization energy
D. Dipole moment

A specie with maximum number of unpaired electrons ?

A. H2O
B. F
C. HF
D. NH-2

Force responsible to hold atoms together in a compound is called ________________?

A. Bond
B. Interaction
C. Attractive force
D. All of above represent same entity

In a period the atomic radius ?

A. Remain same
B. Decreases
C. Increases
D. First decreases then increases

Energy required to remove electron from an atom______________?

A. Ionization potential
B. Electron affinity
C. Electronegativity
D. Activation energy

Greater shielding effect corresponds to ionization energy value___________________?

A. Remain same
B. Lesser
C. Greater
D. No effect

Energy released or absorbed when electrons are added in atom is_________________?

A. Electronegativity
B. Ionization potential
C. Electron affinity
D. Activation energy

Elements of group IA IIA are _________________?

A. Neutral
B. Electropositive
C. Electronegative
D. IA is electropositive while IIA is electronegative

Mostly ionic compound are produced in between elements of_________________?

A. IB and VIIB
B. IA IIA and VIIA
C. IA and VIA
D. IA and IB

The Lewis acids are__________________?

A. Electron deficient
B. Octet is complete
C. Electron rich
D. No such acids exist

The geometry of ammonia is___________________?

A. Square planner
B. Tetrahedral
C. Trigonal bipyramidal
D. Trigonal Pyramidal

By combining n atmic orbitals no. of hybrid orbitals will be__________________?

A. 3n
B. n
C. 2n
D. impossible to predict

Geometry of simple molecule having sp3 hybrid orbital is ___________________?

A. Square planner
B. Tetrahedral
C. Triangular
D. Linear

Pi bonds are produced by overlapping of__________________?

A. Un-hybrid orbitals
B. Hybrid and un hybrid orbitals
C. Hybrid orbitals
D. atomic orbital and hybrid orbital

Molecular orbital which have higher energy than atomic orbitals is called___________________?

A. Hybrid orbital
B. Antibonding molecular orbital
C. Bonding molecular orbital
D. Super atomic orbital

Bond order for N2 molecule is __________________?

A. 1
B. 2
C. 3
D. 4

Unit of dipole moment is_________________?

A. Debye
B. Pascal
C. Poise
D. Newton

The relative attraction of the nucleus for the electrons in a chemical bond is called _________________?

A. Electron affinity
B. Ionization energy
C. Electro negativity
D. None of the above

Chemistry Mcqs

Which of the following will have highest value of electron affinity_________________?

A. Br
B. Cl
C. F
D. I

Which of the solid does not contain covalent bond________________?

A. Copper
B. Diamond
C. Ice
D. Graphite

Shielding effect across the period ________________?

A. Decreases
B. Increases
C. Constant
D. None

Which one has maximum number of unpaired electrons ?

A. 9Z
B. 7Y
C. 6X
D. 13W

Molecular orbitals are filled according to _________________?

A. Hunds rule
B. Auf bau principle
C. Paulis Exclusion principle
D. All these

Which one shows high %age of the ionic character ?

A. HCI
B. HF
C. H2O
D. HBr

Which of the following have their outer most shell complete in atomic form ?

A. Noble gases
B. Coinage metals
C. Alkali metals
D. Gun metals

Energy of atom in compound is___________________?

A. No change
B. Lesser than individual
C. Higher than individual
D. Impossible to predict

An atom loses or gains electrons to__________________?

A. Form a bond
B. Gain stability
C. Complete its outermost shell
D. all are accurate justifications

In a group ionic radius ?

A. Increases
B. No change
C. Decreases
D. Variable trend

Ionization energy in a period generally ___________________?

A. Increases
B. Decreases
C. Variable trend
D. No change

Elements having high I.P values are____________________?

A. Liquids
B. Non metals
C. Metals
D. Solids

In a period electronegativity from left to right_________________?

A. Increases
B. Remain constant
C. Decreases
D. Variable trend

Ionic bond is produced after complete transfer of ________________ ?

A. Neutrons
B. Nucleus
C. Electrons
D. Protons

Bond will beionic when E.N difference of bonded atom is ____________________?

A. Less than 1.7
B. Greater than 1.7
C. Equal to 1.7
D. No specificity exists

Which one of the following has polar covalent bond ?

A. HF
B. H2
C. CH4
D. N2

Sharing of 1 electron pair by one specie forms_________________?

A. Hydrogen bond
B. Single covalent bond
C. Double covalent bond
D. Coordinate covalent bond

Orbitals of same energy produced after mixing of orbitals of different energy are called __________________?

A. Degenerate orbitals
B. Hybrid orbitals
C. Generate orbitals
D. Zeeman orbitals

Geometry of molecule will be pyramidal if the outer post shell of the central atom has___________________?

A. 3 bond pair one lone pair
B. 1 bond pair 3 lone pair
C. 2 bond pair 2 lone pair
D. 3 lone pair 1 bond pair

According to VESPR Model the geometry of molecule having 5 bond pair in outer most shell will be __________________?

A. Square planner
B. Triangular
C. Trigonal bipyramidal
D. Octahedral

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

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