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Q.1: 58.5g of of NaCl per 1 dm3 of solution of NaCl in water the concentration of solution will be------------ ?
- 0.1 M
- 1 m
- 1 M
- 0.1 N
C
Q.2: The determination of correct molecular weight from Raoults law is applicable to------- ?
- a volatile solute in dilute solution
- a non-electrolyte AND non volatile solute in concentrated solution
- a non-electrolyte AND non volatile solute in concentrated solute
- non volatile solute in a dilute solution
D
Q.3: In a galvanic cell--------- ?
- Chemical energy is converted into electricity
- Chemical energy is converted into heat
- Electrical energy is converted into chemical energy
- Electrical energy is converted into heat
A
Q.4: ppm means---------- ?
- parts of solute in 1000 parts of solvent
- parts of solvent in 1000 parts of solute
- parts of solute in one million parts of solution
- parts of solvent in one million parts of solute
C
Q.5: Molten NaCl conducts electricity due to the presence of------- ?
- Free electrons
- Free molecules
- Free ions
- Atoms of Na and Cl
C
Q.6: Apparent charge on atom in molecule is------ ?
- valency
- coordination number
- oxidation number
- charge number
C
Q.7: Electricity in voltaic cell is produced due to--------- ?
- neutralization
- oxidation
- reduction
- both B AND C
D
Q.8: The correct electronic configuration of Cr is------- ?
- [Ar]4s23d4
- [Ar] 4s23d4
- [Ar]4s03d5
- [Ar]4s13d5
D
Q.9: The oxidation number of central metal atom in [Ni(CO)4] is------------ ?
- 0
- 2
- 4
- 6
C
Q.10: The oxidation state of transition elements is usually --------- ?
- variable
- constant
- single
- infinite
A
Q.11: The melting points and boiling points upto meddle of 3d- series --------- ?
- increases
- decreases
- remain same
- no regular trend
A
Q.12: Which of the following can form a chealate--------- ?
- ammine
- oxalato
- carbonyl
- cyano
B
Q.13: Voltaic cell is a----------- ?
- irreversible cell
- reversible cell
- alkaline cell
- all of the above
D
Q.14: With impurities like P and S the open hearth furnace is lined with ?
- SiO2
- Fe2O3
- FeO
- CaO MgO
D
Q.15: For the measurement of standard electrode potential Zn is dipped in---------- ?
- 1 M ZnO solution
- 1 M ZnSO4 solution
- 1.5 M ZnSO4 solution
- 0.1 M ZnSO4 solution
B
Q.16: Stronger the oxidizing agent greater is the-------- ?
- Oxidation potential
- Reduction potential
- Redox potential
- emf of cell
B
Q.17: List of elements based on hydrogen scale is called------- ?
- periodic table
- groups
- periods
- electrochemical series
D
Q.18: In galvanic cell Zn acts as an anode so its value of standard reduction potential in comparison to coupled electrode would be------- ?
- greater
- lesser
- sum of reduction and oxidation potentials
- none
A
Q.19: Which of the following is true in the case of Zn-Cu cell ?
- The flow of electrons takes place from copper to zinc
- E0red of copper electrode is less than that of zinc electrode
- Zinc acts as an anode and copper as cathode
- All are correct
C
Q.20: In alkaline battery the anode is made up of------------- ?
- MnO2
- Zn
- AgO2
- cadmium
B