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1) Percentage of sulfuric acid in lead accumulator is__________________? a. 40% b. 25% c. 30% d. 50%
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2) The half cells are interconnected through________________? a. wire b. salt bridge c. electric circuit d. no connection exists
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3) Which of the following element act as inert electrode________________? a. Cu b. Ag c. Pt d. None
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4) Stronger the oxidizing agent greater is the________________? a. Oxidation potential b. Reduction potential c. Redox potential d. emf of cell
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5) Which of the following cell is not rechargeable ? a. Lead storage battery b. Silver oxide cell c. Fuel cell d. Ni-Cd cell
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6) 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
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7) The degree of dissociation of week electrolyte increases as________________? a. Pressure increases b. Dilution decreases c. Dilution increases d. None
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8) In electrolytic solution conductance of electricity is due to _____________________? a. free electrons b. ions c. metals d. electrodes
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9) Reaction at anode is called________________? a. oxidation b. reduction c. redox d. decomposition
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10) Decrease in oxidation number is called__________________? a. oxidation b. reduction c. oxidation-reduction d. all of above represent same entity
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11) Right half cell contains _____________ electrode? a. A1 b. Zn c. Cu d. Fe
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12) Salt bridge transfers_______________? a. electrons b. anion c. current d. ions
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13) 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
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14) Potential of SHE is considered as__________________? a. zero b. unity c. constant d. multiple of 1
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15) Electrode potential of Zn is__________________? a. oxidation b. reduction c. oxidation-reduction d. depends on the nature of the coupled electrode
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16) The element that act as anode always have ______________ position in electrochemical cell? a. higher b. lower c. in middle d. no effect of position
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17) 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
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18) Secondary cell is_____________________? a. rechargeable b. non rechargeable c. electrolytic cell d. Daniel cell
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19) Density of H2SO4 in lead accumulator is__________________? a. 1.25g/cm3 b. 1.3g/cm3 c. 1.20g/cm3 d. 1.15g/cm3
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20) In alkaline battery the anode is made up of______________________? a. MnO2 b. Zn c. AgO2 d. cadmium
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21) Apparent charge on atom in molecule is___________________? a. valency b. coordination number c. oxidation number d. charge number
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22) In K2Cr2O7 the oxidation number of chromium is____________________? a. 7 b. 6 c. -7 d. -6
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23) The reduction potential Zn is_________________? a. 0.76 b. -0.76 c. -0.55 d. 0.55
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24) Coordination number of the transition element in [Pt Cl NO2 (NH3)4]2- is____________________? a. 2 b. 6 c. 4 d. 8
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25) The oxidation number of central metal atom in [Ni(CO)4] is_________________? a. 0 b. 2 c. 4 d. 6
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26) Group VIB of transition elements contains___________________? a. Zn Cd Hg b. Fe Ru Os c. Cr Mo W d. Mn Te Re
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27) 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
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28) The melting points and boiling points upto meddle of 3d- series ____________________? a. increases b. decreases c. remain same d. no regular trend
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29) Pure metal__________________? a. corrode slowly b. corrode rapidly c. does not corrode easily d. none of these
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30) The correct electronic configuration of Cr is____________________? a. [Ar]4s23d4 b. [Ar] 4s23d4 c. [Ar]4s03d5 d. [Ar]4s13d5
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31) The oxidation state of transition elements is usually _______________________? a. variable b. constant c. single d. infinite
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32) Non-stoichiometric compounds of transition elements are called___________________? a. hydrates b. hydrides c. binary compounds d. interstitial compounds
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33) 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
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34) Which of the following can form a chealate______________________? a. ammine b. oxalato c. carbonyl d. cyano
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35) The compound or complex ion which has a ring in its structure__________________? a. polydentate ligand b. chelate c. monodentate ligand d. hydrate
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36) 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
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37) 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%
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38) With impurities like P and S the open hearth furnace is lined with ? a. SiO2 b. Fe2O3 c. FeO d. CaO MgO
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39) Which is sold as fertilizer ___________________? a. CaSiO3 b. Na2SiO3 c. Ca3(PO4)2 d. MnSiO3
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40) 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
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41) Which of the following is typical transition metal ? a. Sc b. Y c. Cd d. Co
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42) 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
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43) 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
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44) Compounds attracted by applied strong magnetic field are called__________________? a. diamagnetic b. paramagnetic c. good conductor d. ferromagnetic
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45) 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
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46) 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
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47) The species which donate two electron pairs in a coordination compound is called__________________? a. The species which donate two electron pairs in a coordination compound is called__________________? b. mono-dentate ligand c. poly-dentate ligand d. bi-dentate ligand
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48) The central atom along with ligands is called____________________? a. complex ion b. coordination sphere c. ligand d. complex compound
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49) In complex compounds the oxidation number is written in___________________? a. English b. Greek c. Roman numeral d. Hebrew
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50) 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
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