Chemistry MCQs

Option A: N P K

Option B: N K C

Option C: N S P

Option D: N Ca P

Correct Answer: N P K ✔

Option A: boron

Option B: iron

Option C: copper

Option D: carbon

Correct Answer: carbon ✔

Option A: Very strong base

Option B: Very weak acid

Option C: Very strong acid

Option D: Very strong salt

Correct Answer: Very weak acid ✔

Option A: Gibbs

Option B: Einstein

Option C: Sorenson

Option D: Chadwick

Correct Answer: Sorenson ✔

Option A: reaction is at start

Option B: product conc. Is maximum

Option C: reactant conc. Is minimum

Option D: reaction is completed

Correct Answer: product conc. Is maximum ✔

Option A: Ka

Option B: Kb

Option C: Kp

Option D: K

Correct Answer: Kp ✔

Option A: high

Option B: low

Option C: according to Kc

Option D: constant

Correct Answer: high ✔

Option A: dynamic state

Option B: static state

Option C: free state

Option D: unidirectional state

Correct Answer: dynamic state ✔

Option A: 0.0002M HCI

Option B: 0.2 mole of NaCI with 0.2 mole of HNO3

Option C: 0.4 mole of CH3COOH with 0.4 mole of NaOH

Option D: 0.4 mole of NH3 with 0.2 mole of HCI

Correct Answer: 0.4 mole of NH3 with 0.2 mole of HCI ✔

Option A: KOH

Option B: NH3

Option C: PH3

Option D: BF3

Correct Answer: BF3 ✔

Option A: PCI5 = PCI3 + Cl2

Option B: N2 + 3H2 = 2NH

Option C: 2CO + O2 = CO2

Option D: N2 + O2 = 2NO

Correct Answer: N2 + O2 = 2NO ✔

Option A: 0

Option B: 1

Option C: 2

Option D: any one

Correct Answer: 2 ✔

Option A: No units

Option B: Units

Option C: Both A & B

Option D: None

Correct Answer: Both A & B ✔

Option A: weak

Option B: strong

Option C: moderately weak

Option D: unstable

Correct Answer: strong ✔

Option A: buffer solution

Option B: normal solution

Option C: standard solution

Option D: neutral solution

Correct Answer: buffer solution ✔

Option A: brine

Option B: blood

Option C: glue

Option D: solution of CuSO4

Correct Answer: blood ✔

Option A: reactants

Option B: acid

Option C: base

Option D: catalyst

Correct Answer: catalyst ✔

Option A: volume is decreased

Option B: volume increased

Option C: heat absorbed

Option D: no. of moles of specie decreased

Correct Answer: volume increased ✔

Option A: Ka

Option B: Kb

Option C: Kc

Option D: Ksp

Correct Answer: Ksp ✔

Option A: Standard solution

Option B: buffer solution

Option C: acidic buffer solution

Option D: both B & C

Correct Answer: both B & C ✔

Option A: common ion effect

Option B: solubility product

Option C: dissociation constant

Option D: dissociation constant for an acid

Correct Answer: solubility product ✔

Option A: Lowrys

Option B: Lewis

Option C: Arrhenius

Option D: None of these

Correct Answer: Lowrys ✔

Option A: pH

Option B: pOH

Option C: pKa

Option D: pKw

Correct Answer: pH ✔

Option A: more than 7

Option B: less than 7

Option C: equal to 7

Option D: no effect

Correct Answer: more than 7 ✔

Option A: V2O5

Option B: V2O5 and Pt

Option C: Fe

Option D: Pieces of Fe crystals are embedded in fused mixture of MgO Al2O3 and SiO2

Correct Answer: Fe ✔

Option A: Kc=x2/(a-x)(b-x)

Option B: Kc=x2/v(a-x)

Option C: Kc=4×2/(a-2x)2(b-x)

Option D: Kc=4x2v2/(a-x)(b-3x)3

Correct Answer: Kc=4x2v2/(a-x)(b-3x)3 ✔

Option A: moles2dm+6

Option B: moles-2dm+6

Option C: moles+2dm-6

Option D: Kc may or may not have units

Correct Answer: Kc may or may not have units ✔

Option A: rate of forward reaction

Option B: rate of backward reaction

Option C: rate constant

Option D: rate co-efficient

Correct Answer: rate of forward reaction ✔

Option A: reversible

Option B: irreversible

Option C: spontaneous

Option D: non-spontaneous

Correct Answer: reversible ✔

Option A: NaCI

Option B: Na2SO4

Option C: Na2CO3

Option D: FeCl3

Correct Answer: Na2CO3 ✔

Option A: Kc is generally greaer than Kp

Option B: Kc is generally less than Kp

Option C: Kc is generally equal to Kp

Option D: Kc is equal to Kp if the total moles of reactants and products are equal

Correct Answer: Kc is equal to Kp if the total moles of reactants and products are equal ✔

Option A: Increase of pressure

Option B: Increase of volume

Option C: Addition of catalyst

Option D: Decrease of temperature

Correct Answer: Addition of catalyst ✔

Option A: 3.6 x 10-6

Option B: 3.6 x 10-5

Option C: 7.2 x 10-6

Option D: 4 x 10-4

Correct Answer: 4 x 10-4 ✔

Option A: Strong acid and strong base

Option B: Weak acid and strong base

Option C: Weak acid and strong base

Option D: Weak acid and its salt with strong base

Correct Answer: Weak acid and its salt with strong base ✔

Option A: 3

Option B: 2.7

Option C: 2

Option D: 1.5

Correct Answer: 2.7 ✔

Option A: High temperature and high pressure

Option B: Low temperature and low pressure

Option C: High temperature and low pressure

Option D: Low temperature and high pressure

Correct Answer: Low temperature and high pressure ✔

Option A: Clausius

Option B: Boltzman

Option C: Charles

Option D: Vander waal

Correct Answer: Vander waal ✔

Option A: 98.5 atm

Option B: 96.7 atm

Option C: 95.8 atm

Option D: 97.1 atm

Correct Answer: 98.5 atm ✔

Option A: Avogadros law

Option B: Grahams law of diffusion

Option C: Joule Thompson effect

Option D: Daltons law of partial pressure

Correct Answer: Joule Thompson effect ✔

Option A: Critical temperature

Option B: Standard temperature

Option C: Absolute temperature

Option D: Upper consulate temperature

Correct Answer: Critical temperature ✔

Option A: Diffusion

Option B: Effusion

Option C: Attraction with air

Option D: Low dsensity

Correct Answer: Diffusion ✔

Option A: Surface tension

Option B: Aqueous tension

Option C: Vapour pressure

Option D: Hydraulic pressure

Correct Answer: Aqueous tension ✔

Option A: 0.0821 atm dm3k-1mol-

Option B: 0.0821 atm m3k-1mol-1

Option C: 2 cal k-1 mol-1

Option D: 8.314 Nm2k-1mol-1

Correct Answer: 0.0821 atm dm3k-1mol- ✔

Option A: 1/2dm3

Option B: 1/3dm3

Option C: 1/4dm3

Option D: 2/3dm3

Correct Answer: 1/3dm3 ✔

Option A: Gas

Option B: Liquid

Option C: Solid

Option D: Plasma

Correct Answer: Solid ✔

Option A: Three

Option B: Four

Option C: Five

Option D: Two

Correct Answer: Four ✔

Option A: All molecules move with same speed

Option B: All molecules behave independently

Option C: PV / RT = n

Option D: All gases cannot be liquefied through Linds Method

Correct Answer: All molecules move with same speed ✔

Option A: Value of a

Option B: Mass

Option C: Atoms

Option D: Both B and C

Correct Answer: Both B and C ✔

Option A: It may be the first state of matter

Option B: It is not a phase transition

Option C: It is a conductor of electricity

Option D: All of the above

Correct Answer: All of the above ✔

Option A: Hydrogen bonding

Option B: Vander Waals force

Option C: Forces among the polar molecules

Option D: Ionic bond

Correct Answer: Vander Waals force ✔

Option A: H2S

Option B: NO

Option C: Cl2

Option D: N2O

Correct Answer: NO ✔

Option A: Separation of gases

Option B: Expansion of gases

Option C: Compression of gases

Option D: Liquefaction of gases

Correct Answer: Liquefaction of gases ✔

Option A: Intermolecular attraction and infinite volume

Option B: Elastic collisions and finite volume

Option C: Intermolecular attractions and finite volume

Option D: Intermolecular attraction only

Correct Answer: Intermolecular attractions and finite volume ✔

Option A: Daltons law

Option B: Avogadros law

Option C: Grahams law

Option D: Charles law

Correct Answer: Grahams law ✔

Option A: 16 gmol-1

Option B: 32 gmol-1

Option C: 48 gmol-1

Option D: 64 gmol-1

Correct Answer: 32 gmol-1 ✔

Option A: Boltzman

Option B: Maxell

Option C: Clausius

Option D: Bernoulli

Correct Answer: Bernoulli ✔

Option A: 0.1526 atm

Option B: 116 mm of Hg

Option C: 116 torr

Option D: 1 atm

Correct Answer: 1 atm ✔

Option A: 22.414 m3

Option B: 44.828 dm3

Option C: 22.414 dm3

Option D: 11.212 cm3

Correct Answer: 22.414 dm3 ✔

Option A: Straight line parallel to x-axis

Option B: Straight line parallel to y-axis

Option C: Straight line

Option D: Curve

Correct Answer: Straight line ✔

Option A: Translational motion

Option B: Vibrational motion

Option C: Rotational motion

Option D: All of above motions

Correct Answer: Vibrational motion ✔

Option A: Gas

Option B: Liquid

Option C: Solid

Option D: Plasma

Correct Answer: Gas ✔

Option A: Gas

Option B: Liquid

Option C: Solid

Option D: Semi solid

Correct Answer: Gas ✔

Option A: Size of molecule

Option B: Shape of molecule

Option C: Intermolecular attractions

Option D: All of the above

Correct Answer: All of the above ✔

Option A: Unchanged

Option B: Slightly decreased

Option C: Slightly increased

Option D: Zero

Correct Answer: Zero ✔

Option A: Half

Option B: Double

Option C: Same

Option D: None

Correct Answer: Double ✔

Option A: Boyles law

Option B: Charles law

Option C: Daltons law

Option D: Grahams law

Correct Answer: Charles law ✔

Option A: Ne

Option B: N2

Option C: NH3

Option D: CO

Correct Answer: NH3 ✔

Option A: High temperature

Option B: Low temperature

Option C: High pressure

Option D: B and C

Correct Answer: B and C ✔

Option A: Absence of intermolecular forces

Option B: Collisions among the molecules of an ideal gas are perfectly elastic

Option C: The molecules occupy no space

Option D: All of the above are correct

Correct Answer: The molecules occupy no space ✔

Option A: Coordinate covalent bonds

Option B: Hydrogen bonds

Option C: Debye forces

Option D: London dispersion forces

Correct Answer: Coordinate covalent bonds ✔

Option A: CO is 1.25 times faster than CO2

Option B: CO is 3.75 times faster than CO2

Option C: CO is 1.25 times faster than CO

Option D: Both diffuse at the same rate

Correct Answer: CO is 1.25 times faster than CO2 ✔

Option A: All p-orbitals are involved

Option B: One s and 3 p-orbitals are involved

Option C: one p-orbital is involved

Option D: four p-orbitals are involved

Correct Answer: One s and 3 p-orbitals are involved ✔

Option A: Pressure

Option B: Bond length

Option C: Work

Option D: Dipole moment

Correct Answer: Dipole moment ✔

Option A: Ferromagnetic

Option B: Paramagnetic

Option C: Diamagnetism

Option D: Both A & B

Correct Answer: Paramagnetic ✔

Option A: Triangular

Option B: Square planner

Option C: Trigonal bipyramidal

Option D: Octahedral

Correct Answer: Trigonal bipyramidal ✔

Option A: 3 bond pair one lone pair

Option B: 2 bond pair 2 lone pair

Option C: 1 bond pair 3 lone pair

Option D: 3 lone pair 1 bond pair

Correct Answer: 3 bond pair one lone pair ✔

Option A: Degenerate orbitals

Option B: Generate orbitals

Option C: Hybrid orbitals

Option D: Zeeman orbitals

Correct Answer: Degenerate orbitals ✔

Option A: Single covalent bond

Option B: Hydrogen bond

Option C: Double covalent bond

Option D: Coordinate covalent bond

Correct Answer: Coordinate covalent bond ✔

Option A: HF

Option B: CH4

Option C: H2

Option D: N2

Correct Answer: HF ✔

Option A: Equal to 1.7

Option B: Greater than 1.7

Option C: Less than 1.7

Option D: No specificity exists

Correct Answer: Greater than 1.7 ✔

Option A: Nucleus

Option B: Neutrons

Option C: Electrons

Option D: Protons

Correct Answer: Electrons ✔

Option A: Increases

Option B: Decreases

Option C: Remain constant

Option D: Variable trend

Correct Answer: Increases ✔

Option A: Metals

Option B: Non metals

Option C: Liquids

Option D: Solids

Correct Answer: Non metals ✔

Option A: Increases

Option B: Decreases

Option C: No change

Option D: Variable trend

Correct Answer: Increases ✔

Option A: Increases

Option B: Decreases

Option C: No change

Option D: Variable trend

Correct Answer: Increases ✔

Option A: Gain stability

Option B: Form a bond

Option C: Complete its outermost shell

Option D: all are accurate justifications

Correct Answer: all are accurate justifications ✔

Option A: Higher than individual

Option B: Lesser than individual

Option C: No change

Option D: Impossible to predict

Correct Answer: Lesser than individual ✔

Option A: Noble gases

Option B: Alkali metals

Option C: Coinage metals

Option D: Gun metals

Correct Answer: Noble gases ✔

Option A: H2O

Option B: HF

Option C: HCI

Option D: HBr

Correct Answer: HF ✔

Option A: Auf bau principle

Option B: Hunds rule

Option C: Paulis Exclusion principle

Option D: All these

Correct Answer: All these ✔

Option A: 6X

Option B: 7Y

Option C: 9Z

Option D: 13W

Correct Answer: 7Y ✔

Option A: Increases

Option B: Decreases

Option C: Constant

Option D: None

Correct Answer: Constant ✔

Option A: Copper

Option B: Ice

Option C: Diamond

Option D: Graphite

Correct Answer: Copper ✔

Option A: F

Option B: Cl

Option C: Br

Option D: I

Correct Answer: Cl ✔

Option A: Ionization energy

Option B: Electron affinity

Option C: Electro negativity

Option D: None of the above

Correct Answer: Electro negativity ✔

Option A: Debye

Option B: Poise

Option C: Pascal

Option D: Newton

Correct Answer: Debye ✔

Option A: 2

Option B: 1

Option C: 3

Option D: 4

Correct Answer: 3 ✔

Option A: Bonding molecular orbital

Option B: Antibonding molecular orbital

Option C: Hybrid orbital

Option D: Super atomic orbital

Correct Answer: Antibonding molecular orbital ✔

Option A: Un-hybrid orbitals

Option B: Hybrid orbitals

Option C: Hybrid and un hybrid orbitals

Option D: atomic orbital and hybrid orbital

Correct Answer: Un-hybrid orbitals ✔

Option A: Triangular

Option B: Tetrahedral

Option C: Square planner

Option D: Linear

Correct Answer: Tetrahedral ✔