Que- Which of the following unit of concentration is independent of temperature ?
a. Molarity
b. Molality
c. Mole fraction
d. all
Answer- Molality
Que- The molal boiling point constant is the ration of the elevation of boiling point to____________________?
a. Molarity
b. Molality
c. More fraction of solvent
d. Mole fraction of solute
Answer- Molality
Que- Which has the minimum freezing point ?
a. One Molal NaCI
b. One molal KCI solution
c. One molal CaCI2
d. One molal urea solution
Answer- One molal CaCI2
Que- Which of the following substance do not show continuous solubility curve ?
a. KCIO4
b. Na2SO4. 10H2O
c. K2Cr2O7
d. PbCl2
Answer- Na2SO4. 10H2O
Que- Every sample of matter with uniform properties and fixed composition is called_________________?
a. solute
b. solvent
c. solution
d. phase
Answer- phase
Que- The component of solution which is in smaller amount is called_________________?
a. solvent
b. solute
c. phase
d. ion
Answer- solute
Que- 10ml of alcohol dissolve in 90ml of water unit of concentration used is________________?
a. % w/w
b. % w/v
c. % v/v
d. % v/w
Answer- % v/v
Que- 58.5g of of NaCl per 1 dm3 of solution of NaCl in water the concentration of solution will be___________________?
a. 0.1 M
b. 1 m
c. 1 M
d. 0.1 N
Answer- 1 M
Que- 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 be non-ideal solution
c. will show deviations from Raoults law
d. both b & c
Answer- will be an ideal solution
Que- The solution which distils over with change in composition________________?
a. ideal solution
b. zeotropic solution
c. azeotropic solution
d. non-ideal solution
Answer- zeotropic solution
Que- Concentration of solute molecule when they are in equilibrium with solid substance at particular temperature is called________________?
a. saturated solution
b. solubility
c. unsaturated solution
d. super saturated solution
Answer- solubility
Que- The determination of correct molecular weight from Raoults law is applicable to_________________?
a. a volatile solute in dilute solution
b. a non-electrolyte & non volatile solute in concentrated solution
c. a non-electrolyte & non volatile solute in concentrated solute
d. non volatile solute in a dilute solution
Answer- non volatile solute in a dilute solution
Que- Beckmanns apparatus is used to measure_______________?
a. boiling point elevation
b. depression in freezing point
c. lowering of vapour pressure
d. lowering of osmotic pressure
Answer- depression in freezing point
Que- Hydration is a process in which_________________?
a. Molecules are surrounded by solvent molecules
b. Ions 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
Answer- Both ions and molecules are surrounded by water molecules
Que- ppm means________________?
a. parts of solute in 1000 parts of solvent
b. parts of solvent in 1000 parts of solute
c. parts of solute in one million parts of solution
d. parts of solvent in one million parts of solute
Answer- parts of solute in one million parts of solution
Que- The relative lowering of vapour pressure is directly proportional to molality if the solution is________________?
a. concentrated
b. dilute
c. saturated solution
d. all of the above
Answer- dilute
Que- If electricity is passed through CuSO4 solution by using Pt electrode then which of the following possible change occurs ?
a. H2 is deposited at cathode
b. Colour of the solution becomes fade
c. Cu is deposited at anode
d. All are possible
Answer- Colour of the solution becomes fade
Que- Which has maximum oxidation number ?
a. N
b. Cr
c. S
d. Mn
Answer- Mn
Que- In an electrolytic cell current flows ?
a. From cathode to anode in outer circuit
b. From anode to cathode outside the cell
c. From cathode to anode inside the cell
d. both B & C
Answer- From anode to cathode outside the cell
Que- In a galvanic cell________________?
a. Chemical energy is converted into electricity
b. Chemical energy is converted into heat
c. Electrical energy is converted into chemical energy
d. Electrical energy is converted into heat
Answer- Chemical energy is converted into electricity
Que- Molten NaCl conducts electricity due to the presence of_______________?
a. Free electrons
b. Free molecules
c. Free ions
d. Atoms of Na and Cl
Answer- Free ions
Que- Electricity in voltaic cell is produced due to_________________?
a. neutralization
b. oxidation
c. reduction
d. both B & C
Answer- both B & C
Que- In electrolytic cell electricity carries________________?
a. spontaneous reaction
b. non-wpontaneous reaction
c. neutralization
d. all of above
Answer- non-wpontaneous reaction
Que- In Galvanic cell electrons flow from anode to cathode through__________________?
a. external electric circuit
b. salt bridge
c. movement of ions
d. all of the above
Answer- external electric circuit
Que- For the measurement of standard electrode potential Zn is dipped in________________?
a. 1 M ZnO solution
b. 1 M ZnSO4 solution
c. 1.5 M ZnSO4 solution
d. 0.1 M ZnSO4 solution
Answer- 1 M ZnSO4 solution
Que- Voltaic cell can be recharged by______________?
a. by addition of fresh solution
b. by replacing external circuit with external source of electricity
c. by removal of solution
d. by heating it
Answer- by replacing external circuit with external source of electricity
Que- H2 gas in SHE is filled at pressure of___________________?
a. 760mm of Hg
b. 750mm of Hg
c. 780mm of Hg
d. 800mm of Hg
Answer- 760mm of Hg
Que- Chemical used in salt bridge is________________?
a. KOH
b. KCI
c. KNO3
d. KBr
Answer- KCI
Que- List of elements based on hydrogen scale is called________________?
a. periodic table
b. groups
c. periods
d. electrochemical series
Answer- electrochemical series
Que- 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. lesser
c. sum of reduction and oxidation potentials
d. none
Answer- greater
Que- Greater value of standard reduction potential smaller will be tendency______________?
a. to form positive ions
b. to form negative ions
c. gain electrons
d. all are possible
Answer- to form positive ions
Que- Lead accumulators are_______________?
a. secondary cell
b. primary cell
c. voltaic cell
d. both A & C
Answer- both A & C
Que- Capacity of one lead accumulator cell is___________________?
a. 1.5 volts
b. 2 volts
c. 3 volts
d. 1 volts
Answer- 2 volts
Que- The strength of solution of an element whose electrode potential is to be measured is________________?
a. 2M
b. 1N
c. 1m
d. 1M
Answer- 1M
Que- Voltaic cell is a_________________?
a. irreversible cell
b. reversible cell
c. alkaline cell
d. all of the above
Answer- all of the above
Que- Percentage of sulfuric acid in lead accumulator is__________________?
a. 40%
b. 25%
c. 30%
d. 50%
Answer- 30%
Que- The half cells are interconnected through________________?
a. wire
b. salt bridge
c. electric circuit
d. no connection exists
Answer- salt bridge
Que- Which of the following element act as inert electrode________________?
a. Cu
b. Ag
c. Pt
d. None
Answer- Pt
Que- Stronger the oxidizing agent greater is the________________?
a. Oxidation potential
b. Reduction potential
c. Redox potential
d. emf of cell
Answer- Reduction potential
Que- Which of the following cell is not rechargeable ?
a. Lead storage battery
b. Silver oxide cell
c. Fuel cell
d. Ni-Cd cell
Answer- Silver oxide cell
Que- Which of the following is true in the case of Zn-Cu cell ?
a. The flow of electrons takes place from copper to zinc
b. E0red of copper electrode is less than that of zinc electrode
c. Zinc acts as an anode and copper as cathode
d. All are correct
Answer- Zinc acts as an anode and copper as cathode
Que- The degree of dissociation of week electrolyte increases as________________?
a. Pressure increases
b. Dilution decreases
c. Dilution increases
d. None
Answer- Dilution increases
Que- In electrolytic solution conductance of electricity is due to _____________________?
a. free electrons
b. ions
c. metals
d. electrodes
Answer- ions
Que- Reaction at anode is called________________?
a. oxidation
b. reduction
c. redox
d. decomposition
Answer- oxidation
Que- Decrease in oxidation number is called__________________?
a. oxidation
b. reduction
c. oxidation-reduction
d. all of above represent same entity
Answer- reduction
Que- Right half cell contains _____________ electrode?
a. A1
b. Zn
c. Cu
d. Fe
Answer- Cu
Que- Salt bridge transfers_______________?
a. electrons
b. anion
c. current
d. ions
Answer- ions
Que- E0red of an element cab be calculated by comparing it with _____________________?
a. New electrode of same element
b. SHE
c. 1M solution of ions of respective element
d. 2M solution of HCI
Answer- SHE
Que- Potential of SHE is considered as__________________?
a. zero
b. unity
c. constant
d. multiple of 1
Answer- zero
Que- Electrode potential of Zn is__________________?
a. oxidation
b. reduction
c. oxidation-reduction
d. depends on the nature of the coupled electrode
Answer- depends on the nature of the coupled electrode
Que- The element that act as anode always have ______________ position in electrochemical cell?
a. higher
b. lower
c. in middle
d. no effect of position
Answer- higher
Que- Greater value of standard reduction potential greater will be tendency__________________?
a. to get oxidized
b. to get reduced
c. to accept electrons
d. both B and C
Answer- both B and C
Que- Secondary cell is_____________________?
a. rechargeable
b. non rechargeable
c. electrolytic cell
d. Daniel cell
Answer- rechargeable
Que- Density of H2SO4 in lead accumulator is__________________?
a. 1.25g/cm3
b. 1.3g/cm3
c. 1.20g/cm3
d. 1.15g/cm3
Answer- 1.25g/cm3
Que- In alkaline battery the anode is made up of______________________?
a. MnO2
b. Zn
c. AgO2
d. cadmium
Answer- Zn
Que- Apparent charge on atom in molecule is___________________?
a. valency
b. coordination number
c. oxidation number
d. charge number
Answer- oxidation number
Que- In K2Cr2O7 the oxidation number of chromium is____________________?
a. 7
b. 6
c. -7
d. -6
Answer- 6
Que- The reduction potential Zn is_________________?
a. 0.76
b. -0.76
c. -0.55
d. 0.55
Answer- -0.76
Que- Coordination number of the transition element in [Pt Cl NO2 (NH3)4]2- is____________________?
a. 2
b. 6
c. 4
d. 8
Answer- 6
Que- The oxidation number of central metal atom in [Ni(CO)4] is_________________?
a. 0
b. 2
c. 4
d. 6
Answer- 4
Que- Group VIB of transition elements contains___________________?
a. Zn Cd Hg
b. Fe Ru Os
c. Cr Mo W
d. Mn Te Re
Answer- Cr Mo W
Que- The leements in which d or f orbitals are in the process of completion are__________________?
a. outer transition elements
b. inner transition elements
c. typical transition elements
d. transition elements
Answer- transition elements
Que- The melting points and boiling points upto meddle of 3d- series ____________________?
a. increases
b. decreases
c. remain same
d. no regular trend
Answer- increases
Que- Pure metal__________________?
a. corrode slowly
b. corrode rapidly
c. does not corrode easily
d. none of these
Answer- does not corrode easily
Que- The correct electronic configuration of Cr is____________________?
a. [Ar]4s23d4
b. [Ar] 4s23d4
c. [Ar]4s03d5
d. [Ar]4s13d5
Answer- [Ar]4s13d5
Que- The oxidation state of transition elements is usually _______________________?
a. variable
b. constant
c. single
d. infinite
Answer- variable
Que- Non-stoichiometric compounds of transition elements are called___________________?
a. hydrates
b. hydrides
c. binary compounds
d. interstitial compounds
Answer- interstitial compounds
Que- The specie which donates electrons to central metal atom in coordination sphere is called____________________?
a. anion
b. cation
c. Ligand is positively charged
d. acid
Answer- Ligand is positively charged
Que- Which of the following can form a chealate______________________?
a. ammine
b. oxalato
c. carbonyl
d. cyano
Answer- oxalato
Que- The compound or complex ion which has a ring in its structure__________________?
a. polydentate ligand
b. chelate
c. monodentate ligand
d. hydrate
Answer- chelate
Que- Geometry of the complex compounds usually depends upon __________________?
a. type of ligands
b. types of hybridization in the elements of ligands
c. hybridization of central metal
d. All of above
Answer- hybridization of central metal
Que- In pig iron the concentration of C-atom is ___________________?
a. 0.12 — 0.25%
b. 2.5 — 4.5%
c. 2.0 — 4.0%
d. 0.25 — 2.5%
Answer- 2.5 — 4.5%
Que- With impurities like P and S the open hearth furnace is lined with ?
a. SiO2
b. Fe2O3
c. FeO
d. CaO MgO
Answer- CaO MgO
Que- Which is sold as fertilizer ___________________?
a. CaSiO3
b. Na2SiO3
c. Ca3(PO4)2
d. MnSiO3
Answer- Ca3(PO4)2
Que- When an active metal like Al comes in contact with less active element like Cu then it produces__________________?
a. dry cell
b. galvanic cell
c. electrolytic cell
d. A and B
Answer- galvanic cell
Que- Which of the following is typical transition metal ?
a. Sc
b. Y
c. Cd
d. Co
Answer- Co
Que- K2 (Cu(CN)4) which one is correct___________________?
a. Potassium tetra cyano cupperate
b. Co-ordination number is 2
c. Ligand is positively charged
d. Central atom is present in avionic sphere
Answer- Central atom is present in avionic sphere
Que- The location of transition elements is in between__________________?
a. lanthanides & actinides
b. s and p block elements
c. chalcogens and halogens
d. d and f block elements
Answer- s and p block elements
Que- Compounds attracted by applied strong magnetic field are called__________________?
a. diamagnetic
b. paramagnetic
c. good conductor
d. ferromagnetic
Answer- paramagnetic
Que- When light is exposed to transition element then electrons jump from lower orbitals to higher orbitals in______________________?
a. orbitals of f-subshell
b. orbitals of d-subshell
c. orbitals of p-subshell
d. both A & B
Answer- both A & B
Que- When a compound of transition element is dissolved in a solution of salt then it produces____________________?
a. simples ions
b. complex ions
c. double salts
d. strong anions
Answer- complex ions
Que- The species which donate two electron pairs in a coordination compound is called__________________?
a. ligand
b. mono-dentate ligand
c. poly-dentate ligand
d. bi-dentate ligand
Answer- bi-dentate ligand
Que- The central atom along with ligands is called____________________?
a. complex ion
b. coordination sphere
c. ligand
d. complex compound
Answer- coordination sphere
Que- In complex compounds the oxidation number is written in___________________?
a. English
b. Greek
c. Roman numeral
d. Hebrew
Answer- Roman numeral
Que- When the central atom of coordination compound is sp3d2 hybridization the expected geometry will be___________________?
a. tetrahedral
b. square planar
c. trigonal bipyramidal
d. octahedral
Answer- octahedral
Que- In the production of wrought iron Mg Si and P are removed in the form of___________________?
a. oxides
b. silicates
c. slag
d. carbonates
Answer- slag
Que- Any process of chemical decay of metals due to the action of surrounding medium is called__________________?
a. activation
b. enameling
c. corrosion
d. coating
Answer- corrosion
Que- Polymers described as large molecules built up from small repeating units called________________?
a. Biopolymers
b. Dimers
c. Monomers
d. metamers
Answer- Monomers
Que- The important monomers of acryclic resins is__________________?
a. Vinyl chloride
b. Styrene
c. Methylmethacrylate
d. Hexamethylenediamine
Answer- Methylmethacrylate
Que- Industrial materials and thermal power stations are coated with______________________?
a. Polyester resins
b. Epoxy paints
c. Polyamide resins
d. Polyvinyl chloride
Answer- Epoxy paints
Que- Common example of carbohydrates are__________________?
a. Cellulose glycogen galactose
b. Glyceraldehydes glucose peptone
c. Glycerol phospho lipids collagen
d. Legumin amylopectin albumin
Answer- Cellulose glycogen galactose
Que- Hydrolysis of an oligosaccharide in the presence of acid yields________________?
a. one monosaccharide unit
b. No monosaccharide unit
c. 2-9 monosaccharide unit
d. many monosaccharide
Answer- 2-9 monosaccharide unit
Que- The process of polymerization was classified by___________________?
a. Strecker
b. Sabatier
c. Runge
d. W. H. Carothers
Answer- W. H. Carothers
Que- Protein attached to some non protein group is called____________________?
a. Derived protein
b. Sample protein
c. Proteoses
d. Conjugated protein
Answer- Conjugated protein
Que- Lipids are soluble in___________________?
a. Organic solvents
b. Organic and inorganic solvents
c. Inorganic solvents
d. Solubility has nothing to do with lipids
Answer- Organic solvents
Que- Animal and vegetable fats are___________________?
a. Glycerols
b. Fatty acids
c. Triesters formed from glycerol and fatty acids
d. Tetraesters formed from glycerol and fatty acids
Answer- Triesters formed from glycerol and fatty acids
Que- Triglycerides are easily hydrolyzed by enzymes called_________________?
a. Lyases
b. Ligases
c. Lipases
d. Hydrolases
Answer- Lipases
Que- Saponification is the hydrolysis of fat or oil with an__________________?
a. Acid
b. Alkali
c. Enzyme and alkali
d. Enzyme and acid
Answer- Alkali
Que- Enzymes from the same organism which catalyze same reaction but are chemically and physically distinct from each other are called______________?
a. Oxidoreductases
b. Hydrolases
c. Isoenzymes
d. Isomerases
Answer- Isoenzymes
Que- Enzyme proved useful in cancer treatment is_______________?
a. Lactic dehydrogenase
b. Alkaline phosphatase
c. L-asparaginase
d. Cellulase
Answer- L-asparaginase