Que- Rutherford bombarded _________________ particles in discovery of nucleus?
a. Gamma-rays
b. Alpha-rays
c. Beta-rays
d. X-rays
Answer- Alpha-rays
Que- The maximum number of orbitals present in a subshell that is represented by Azimuthal quantum number = 3 will be________________?
a. 1
b. 3
c. 5
d. 7
Answer- 7
Que- Pfund series are produced in the spectrum of hydrogen atom__________________?
a. when electrons jump down to 2nd- orbit
b. when electrons jump down to 3rd- orbit
c. when electrons jump down to 4th- orbit
d. when electrons jump down to 5th- orbit
Answer- when electrons jump down to 5th- orbit
Que- Sommerfelds modification in Bohrs model is_______________?
a. Orbit is cylindrical
b. Orbit is elliptical
c. Orbit is longitudinal
d. Orbit is asymmetrical
Answer- Orbit is elliptical
Que- Wavelength of electron was verified by_________________?
a. Moseley
b. Davisson and Germer
c. Einstein
d. Roentgen
Answer- Davisson and Germer
Que- Quantum number which tells the energy of electron is________________?
a. n
b. 1
c. m
d. s
Answer- n
Que- _______________ can expel proteons from paraffins ?
a. Electron
b. Positron
c. Neutron
d. None of above has such capability
Answer- Neutron
Que- Centrifugal forces are balanced in atom by__________________?
a. Attractive forces
b. Repulsive force
c. Electrons
d. Neutrons
Answer- Attractive forces
Que- When 6d orbital is complete the entering electron goes into_________________?
a. 7f
b. 7s
c. 7p
d. 7d
Answer- 7p
Que- Neutrons moving with an energy of 1.2 MeV are called_______________?
a. Fast neutrons
b. Slow neutrons
c. Moderate neutrons
d. All are possible
Answer- Fast neutrons
Que- Which of the following way in used for classification of chromatography ?
a. Shape
b. Phase
c. Mechanism
d. All
Answer- All
Que- Which of the following technique is used for the separation of insoluble particles from liquids ?
a. Filtration
b. Crystallization
c. Solvent extraction
d. Chromatography
Answer- Filtration
Que- Fluted filter paper is used to__________________?
a. Filter hot solution
b. Avoid premature crystallization
c. Increase the rate of filtration
d. Decrease the area
Answer- Increase the rate of filtration
Que- A substance having very high vapour pressure at its melting point on heating will show_______________?
a. Melting
b. Sublimation
c. Decomposition
d. Condensation
Answer- Sublimation
Que- A technique of partition chromatography in which the solvent is in a pool at the bottom of container_______________?
a. Adsorption chromatography
b. Ascending chromatography
c. Radial chromatography
d. Descending chromatography
Answer- Ascending chromatography
Que- Branch of chemistry that deals with the complete qualitative and quantitative analysis of a substance is___________________?
a. Stoichio chemistry
b. Physical chemistry
c. Analytical chemistry
d. Quantum chemistry
Answer- Analytical chemistry
Que- Estimation of amounts of different components in a sample is________________?
a. Quantitative analysis
b. Qualitative analysis
c. Stochiometery
d. Physical chemistry
Answer- Quantitative analysis
Que- The solid which is left over the filter paper as a result of filtration_________________?
a. Insoluble particles
b. residue
c. crystals
d. mud
Answer- residue
Que- Gooch Crucibles are made up of________________?
a. plastic
b. fibre
c. porcelain
d. steel
Answer- porcelain
Que- Sintered crucible is made up of________________?
a. Plastic
b. glass
c. porcetain
d. fiber
Answer- glass
Que- Separation of a solid from its hot saturated solution by cooling is called__________________?
a. vapourization
b. solvent extraction
c. filtration
d. crystallization
Answer- crystallization
Que- Which of the following technique is simple and efficient to purify a substance____________________?
a. Filtration
b. Sublimation
c. Crystallization
d. Solvent extraction
Answer- Solvent extraction
Que- 95% ethanol is called_________________?
a. methylated spirit
b. wood spirit
c. rectified spirit
d. absolute alcohol
Answer- rectified spirit
Que- Ratio of the amount of solute in organic and aqueous solvent is________________?
a. Retardation factor
b. Distribution co-efficient
c. Distribution in aqueous solution
d. All statements are wrong
Answer- Distribution co-efficient
Que- Animal charcoal adsorbs the coloured_________________?
a. impurities
b. crystals
c. solvents
d. both A & B
Answer- impurities
Que- Crystallization does not involve_______________?
a. heating
b. sublimation
c. cooling
d. vaporization
Answer- sublimation
Que- In CCI4 I2 shows________________?
a. Red colour
b. Purple colour
c. Blue colour
d. Yellow colour
Answer- Purple colour
Que- Direct conversion of solids into vapours is called ___________________?
a. Solvent extraction
b. sublimation
c. crystallization
d. vaporization
Answer- sublimation
Que- Without suction pump filtration is __________________?
a. Fast process
b. Slow process
c. Rapid process
d. All are possible
Answer- Slow process
Que- The use of CaCl2 and PCl5 in the process of crystallization is as a____________________?
a. oxidizing agent
b. reducing agent
c. drying agent
d. colouring agent
Answer- drying agent
Que- In solvent extraction ether is used to separate products of organic synthesis from________________?
a. water
b. iodine
c. hydrochloric acid
d. gases
Answer- water
Que- In crystallization if the solvent is inflammable then direct heating is________________?
a. needed
b. avoided
c. depends on temperature
d. crystallization does not involve heating
Answer- avoided
Que- Rate of filtration can be increased by applying gentle suction______________?
a. Gooch crucible
b. Filter paper
c. Sintered crucible
d. All of the above
Answer- Filter paper
Que- Size of filter paper is selected according to the amount of__________________?
a. solution
b. amount of insoluble solute
c. amount of soluble solute
d. Amount of solvent
Answer- amount of insoluble solute
Que- The tip of funnel should touch the wall of the breaker in order to avoid____________________?
a. Inconsistent flow of filtration
b. splashing
c. premature crystallization
d. all of above
Answer- splashing
Que- The technique used to separate components of mixture in solid phase ?
a. Crystallization
b. Filtration
c. Sublimation
d. Solvent extraction
Answer- Sublimation
Que- Identification of the components of a sample is_________________?
a. Quantitative analysis
b. Qualitative analysis
c. Stoichiometry
d. Physical chemistry
Answer- Qualitative analysis
Que- Different components of a mixture have different Rf values due to________________?
a. Polar solvent used
b. Combination of solvents used
c. Their different distribution coefficients in the solvent
d. Distributive law
Answer- Their different distribution coefficients in the solvent
Que- A process controlled by Distributive law is__________________?
a. Crystallization
b. Sublimation
c. Solvent extraction
d. Filtration
Answer- Solvent extraction
Que- Safe and the most reliable method of drying crystals is through_________________?
a. Filter paper
b. Vacuum desiccators
c. Oven
d. None of these
Answer- Vacuum desiccators
Que- Silica gel and alumina are used as __________________?
a. Mobile phase
b. Stationary phase
c. Mixed phase
d. Single phase
Answer- Stationary phase
Que- The solvent or mixture of solvents used for separation of compounds is called____________________?
a. Stationary phase
b. Mobile phase
c. Dynamic phase
d. Static phase
Answer- Mobile phase
Que- Sintered glass is a porous material used for ___________________?
a. absorption
b. adsorption
c. filtration
d. sublimation
Answer- filtration
Que- Which is not related pair of term used in analytical techniques________________?
a. Filtrate residue
b. Sublimate sublimation
c. Drying desiccator
d. Separating funnel mother liquor
Answer- Sublimate sublimation
Que- The major steps involved in complete quantitative analysis are _________________?
a. 2
b. 3
c. 4
d. 5
Answer- 4
Que- Selection of filter paper depends on size of particles to be________________?
a. filtered
b. dried
c. decolorized
d. decanted
Answer- filtered
Que- Which is not a sublime material_______________?
a. Iodine
b. Benzoic acid
c. Ammonium chloride
d. Potash alum
Answer- Potash alum
Que- Shaking two immiscible liquids increases_________________?
a. Length of contact
b. Volume of contact
c. Area of contact
d. all of above
Answer- Area of contact
Que- The ionization energy__________________?
a. Generally increases from left to right in a period
b. Does not change in a period
c. Increase from top to bottom in a group
d. Does not change in a group
Answer- Generally increases from left to right in a period
Que- Which type of bond is formed by overlap of p orbitals _______________?
a. Pi
b. Sigma
c. Both
d. Neither
Answer- Both
Que- The octet rule does not always hold for which of the following elements _________________?
a. C
b. O
c. F
d. P
Answer- P
Que- Which of the following is the best explanation that CO2 is non polar molecule __________________?
a. Linear geometry
b. Dipole moment is zero
c. Sp hybridization
d. None
Answer- Dipole moment is zero
Que- Which one is not the absolute term of the element _________________ ?
a. Ionization energy
b. Electron affinity
c. Electro negativity
d. Atomic size
Answer- Electro negativity
Que- In O2 each oxygen atom is hybridized_________________?
a. sp3
b. sp2
c. sp
d. All
Answer- sp2
Que- Measurement of the degree of polarity is___________________?
a. Electron affinity
b. Ionic character
c. Ionization energy
d. Dipole moment
Answer- Dipole moment
Que- A specie with maximum number of unpaired electrons ?
a. F
b. H2O
c. HF
d. NH-2
Answer- NH-2
Que- Force responsible to hold atoms together in a compound is called ________________?
a. Bond
b. Attractive force
c. Interaction
d. All of above represent same entity
Answer- Bond
Que- In a period the atomic radius ?
a. Increases
b. Decreases
c. Remain same
d. First decreases then increases
Answer- Decreases
Que- Energy required to remove electron from an atom______________?
a. Ionization potential
b. Electronegativity
c. Electron affinity
d. Activation energy
Answer- Ionization potential
Que- Greater shielding effect corresponds to ionization energy value___________________?
a. Greater
b. Lesser
c. Remain same
d. No effect
Answer- Lesser
Que- Energy released or absorbed when electrons are added in atom is_________________?
a. Ionization potential
b. Electronegativity
c. Electron affinity
d. Activation energy
Answer- Electron affinity
Que- Elements of group IA IIA are _________________?
a. Electronegative
b. Electropositive
c. Neutral
d. IA is electropositive while IIA is electronegative
Answer- Electropositive
Que- Mostly ionic compound are produced in between elements of_________________?
a. IA and VIA
b. IA IIA and VIIA
c. IB and VIIB
d. IA and IB
Answer- IA IIA and VIIA
Que- The Lewis acids are__________________?
a. Electron deficient
b. Electron rich
c. Octet is complete
d. No such acids exist
Answer- Electron deficient
Que- The geometry of ammonia is___________________?
a. Tetrahedral
b. Square planner
c. Trigonal bipyramidal
d. Trigonal Pyramidal
Answer- Trigonal Pyramidal
Que- By combining n atmic orbitals no. of hybrid orbitals will be__________________?
a. 2n
b. n
c. 3n
d. impossible to predict
Answer- n
Que- Geometry of simple molecule having sp3 hybrid orbital is ___________________?
a. Triangular
b. Tetrahedral
c. Square planner
d. Linear
Answer- Tetrahedral
Que- Pi bonds are produced by overlapping of__________________?
a. Un-hybrid orbitals
b. Hybrid orbitals
c. Hybrid and un hybrid orbitals
d. atomic orbital and hybrid orbital
Answer- Un-hybrid orbitals
Que- Molecular orbital which have higher energy than atomic orbitals is called___________________?
a. Bonding molecular orbital
b. Antibonding molecular orbital
c. Hybrid orbital
d. Super atomic orbital
Answer- Antibonding molecular orbital
Que- Bond order for N2 molecule is __________________?
a. 2
b. 1
c. 3
d. 4
Answer- 3
Que- Unit of dipole moment is_________________?
a. Debye
b. Poise
c. Pascal
d. Newton
Answer- Debye
Que- The relative attraction of the nucleus for the electrons in a chemical bond is called _________________?
a. Ionization energy
b. Electron affinity
c. Electro negativity
d. None of the above
Answer- Electro negativity
Que- Which of the following will have highest value of electron affinity_________________?
a. F
b. Cl
c. Br
d. I
Answer- Cl
Que- Which of the solid does not contain covalent bond________________?
a. Copper
b. Ice
c. Diamond
d. Graphite
Answer- Copper
Que- Shielding effect across the period ________________?
a. Increases
b. Decreases
c. Constant
d. None
Answer- Constant
Que- Which one has maximum number of unpaired electrons ?
a. 6X
b. 7Y
c. 9Z
d. 13W
Answer- 7Y
Que- Molecular orbitals are filled according to _________________?
a. Auf bau principle
b. Hunds rule
c. Paulis Exclusion principle
d. All these
Answer- All these
Que- Which one shows high %age of the ionic character ?
a. H2O
b. HF
c. HCI
d. HBr
Answer- HF
Que- Which of the following have their outer most shell complete in atomic form ?
a. Noble gases
b. Alkali metals
c. Coinage metals
d. Gun metals
Answer- Noble gases
Que- Energy of atom in compound is___________________?
a. Higher than individual
b. Lesser than individual
c. No change
d. Impossible to predict
Answer- Lesser than individual
Que- An atom loses or gains electrons to__________________?
a. Gain stability
b. Form a bond
c. Complete its outermost shell
d. all are accurate justifications
Answer- all are accurate justifications
Que- In a group ionic radius ?
a. Increases
b. Decreases
c. No change
d. Variable trend
Answer- Increases
Que- Ionization energy in a period generally ___________________?
a. Increases
b. Decreases
c. No change
d. Variable trend
Answer- Increases
Que- Elements having high I.P values are____________________?
a. Metals
b. Non metals
c. Liquids
d. Solids
Answer- Non metals
Que- In a period electronegativity from left to right_________________?
a. Increases
b. Decreases
c. Remain constant
d. Variable trend
Answer- Increases
Que- Ionic bond is produced after complete transfer of ________________ ?
a. Nucleus
b. Neutrons
c. Electrons
d. Protons
Answer- Electrons
Que- Bond will beionic when E.N difference of bonded atom is ____________________?
a. Equal to 1.7
b. Greater than 1.7
c. Less than 1.7
d. No specificity exists
Answer- Greater than 1.7
Que- Which one of the following has polar covalent bond ?
a. HF
b. CH4
c. H2
d. N2
Answer- HF
Que- Sharing of 1 electron pair by one specie forms_________________?
a. Single covalent bond
b. Hydrogen bond
c. Double covalent bond
d. Coordinate covalent bond
Answer- Coordinate covalent bond
Que- Orbitals of same energy produced after mixing of orbitals of different energy are called __________________?
a. Degenerate orbitals
b. Generate orbitals
c. Hybrid orbitals
d. Zeeman orbitals
Answer- Degenerate orbitals
Que- Geometry of molecule will be pyramidal if the outer post shell of the central atom has___________________?
a. 3 bond pair one lone pair
b. 2 bond pair 2 lone pair
c. 1 bond pair 3 lone pair
d. 3 lone pair 1 bond pair
Answer- 3 bond pair one lone pair
Que- According to VESPR Model the geometry of molecule having 5 bond pair in outer most shell will be __________________?
a. Triangular
b. Square planner
c. Trigonal bipyramidal
d. Octahedral
Answer- Trigonal bipyramidal
Que- Unpaired electron in a molecule gives ______________ character ?
a. Ferromagnetic
b. Paramagnetic
c. Diamagnetism
d. Both A & B
Answer- Paramagnetic
Que- Product of charge and distance is called__________________?
a. Pressure
b. Bond length
c. Work
d. Dipole moment
Answer- Dipole moment
Que- on sp3 hybridization ________________?
a. All p-orbitals are involved
b. One s and 3 p-orbitals are involved
c. one p-orbital is involved
d. four p-orbitals are involved
Answer- One s and 3 p-orbitals are involved
Que- Which state of matter has the lowest density ?
a. Gas
b. Liquid
c. Solid
d. Plasma
Answer- Gas
Que- The solid particles only posses_____________________?
a. Translational motion
b. Vibrational motion
c. Rotational motion
d. All of above motions
Answer- Vibrational motion
Que- If 1/V is plotted on X-axis and pressure on Y-axis at constant temperature what should appear ________________?
a. Straight line parallel to x-axis
b. Straight line parallel to y-axis
c. Straight line
d. Curve
Answer- Straight line
Que- One mole of an ideal gas at 546.5 K under 2 atm pressure has a volume of________________?
a. 22.414 m3
b. 44.828 dm3
c. 22.414 dm3
d. 11.212 cm3
Answer- 22.414 dm3
Que- Which one is not the partial pressure of oxygen in the lungs ?
a. 0.1526 atm
b. 116 mm of Hg
c. 116 torr
d. 1 atm
Answer- 1 atm